diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
new file mode 100644
index 0000000..ff90e78
--- /dev/null
+++ b/core/java/android/net/ConnectivityManager.java
@@ -0,0 +1,2416 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net;
+
+import static com.android.internal.util.Preconditions.checkNotNull;
+
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.net.NetworkUtils;
+import android.os.Binder;
+import android.os.Build.VERSION_CODES;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.IBinder;
+import android.os.INetworkActivityListener;
+import android.os.INetworkManagementService;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.provider.Settings;
+import android.telephony.TelephonyManager;
+import android.util.ArrayMap;
+import android.util.Log;
+
+import com.android.internal.telephony.ITelephony;
+import com.android.internal.telephony.PhoneConstants;
+import com.android.internal.util.Protocol;
+
+import java.net.InetAddress;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.HashMap;
+
+/**
+ * Class that answers queries about the state of network connectivity. It also
+ * notifies applications when network connectivity changes. Get an instance
+ * of this class by calling
+ * {@link android.content.Context#getSystemService(String) Context.getSystemService(Context.CONNECTIVITY_SERVICE)}.
+ * <p>
+ * The primary responsibilities of this class are to:
+ * <ol>
+ * <li>Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)</li>
+ * <li>Send broadcast intents when network connectivity changes</li>
+ * <li>Attempt to "fail over" to another network when connectivity to a network
+ * is lost</li>
+ * <li>Provide an API that allows applications to query the coarse-grained or fine-grained
+ * state of the available networks</li>
+ * <li>Provide an API that allows applications to request and select networks for their data
+ * traffic</li>
+ * </ol>
+ */
+public class ConnectivityManager {
+    private static final String TAG = "ConnectivityManager";
+
+    /**
+     * A change in network connectivity has occurred. A default connection has either
+     * been established or lost. The NetworkInfo for the affected network is
+     * sent as an extra; it should be consulted to see what kind of
+     * connectivity event occurred.
+     * <p/>
+     * If this is a connection that was the result of failing over from a
+     * disconnected network, then the FAILOVER_CONNECTION boolean extra is
+     * set to true.
+     * <p/>
+     * For a loss of connectivity, if the connectivity manager is attempting
+     * to connect (or has already connected) to another network, the
+     * NetworkInfo for the new network is also passed as an extra. This lets
+     * any receivers of the broadcast know that they should not necessarily
+     * tell the user that no data traffic will be possible. Instead, the
+     * receiver should expect another broadcast soon, indicating either that
+     * the failover attempt succeeded (and so there is still overall data
+     * connectivity), or that the failover attempt failed, meaning that all
+     * connectivity has been lost.
+     * <p/>
+     * For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY
+     * is set to {@code true} if there are no connected networks at all.
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";
+
+    /**
+     * Identical to {@link #CONNECTIVITY_ACTION} broadcast, but sent without any
+     * applicable {@link Settings.Global#CONNECTIVITY_CHANGE_DELAY}.
+     *
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String CONNECTIVITY_ACTION_IMMEDIATE =
+            "android.net.conn.CONNECTIVITY_CHANGE_IMMEDIATE";
+
+    /**
+     * The lookup key for a {@link NetworkInfo} object. Retrieve with
+     * {@link android.content.Intent#getParcelableExtra(String)}.
+     *
+     * @deprecated Since {@link NetworkInfo} can vary based on UID, applications
+     *             should always obtain network information through
+     *             {@link #getActiveNetworkInfo()} or
+     *             {@link #getAllNetworkInfo()}.
+     * @see #EXTRA_NETWORK_TYPE
+     */
+    @Deprecated
+    public static final String EXTRA_NETWORK_INFO = "networkInfo";
+
+    /**
+     * Network type which triggered a {@link #CONNECTIVITY_ACTION} broadcast.
+     * Can be used with {@link #getNetworkInfo(int)} to get {@link NetworkInfo}
+     * state based on the calling application.
+     *
+     * @see android.content.Intent#getIntExtra(String, int)
+     */
+    public static final String EXTRA_NETWORK_TYPE = "networkType";
+
+    /**
+     * The lookup key for a boolean that indicates whether a connect event
+     * is for a network to which the connectivity manager was failing over
+     * following a disconnect on another network.
+     * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}.
+     */
+    public static final String EXTRA_IS_FAILOVER = "isFailover";
+    /**
+     * The lookup key for a {@link NetworkInfo} object. This is supplied when
+     * there is another network that it may be possible to connect to. Retrieve with
+     * {@link android.content.Intent#getParcelableExtra(String)}.
+     */
+    public static final String EXTRA_OTHER_NETWORK_INFO = "otherNetwork";
+    /**
+     * The lookup key for a boolean that indicates whether there is a
+     * complete lack of connectivity, i.e., no network is available.
+     * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}.
+     */
+    public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity";
+    /**
+     * The lookup key for a string that indicates why an attempt to connect
+     * to a network failed. The string has no particular structure. It is
+     * intended to be used in notifications presented to users. Retrieve
+     * it with {@link android.content.Intent#getStringExtra(String)}.
+     */
+    public static final String EXTRA_REASON = "reason";
+    /**
+     * The lookup key for a string that provides optionally supplied
+     * extra information about the network state. The information
+     * may be passed up from the lower networking layers, and its
+     * meaning may be specific to a particular network type. Retrieve
+     * it with {@link android.content.Intent#getStringExtra(String)}.
+     */
+    public static final String EXTRA_EXTRA_INFO = "extraInfo";
+    /**
+     * The lookup key for an int that provides information about
+     * our connection to the internet at large.  0 indicates no connection,
+     * 100 indicates a great connection.  Retrieve it with
+     * {@link android.content.Intent#getIntExtra(String, int)}.
+     * {@hide}
+     */
+    public static final String EXTRA_INET_CONDITION = "inetCondition";
+
+    /**
+     * Broadcast action to indicate the change of data activity status
+     * (idle or active) on a network in a recent period.
+     * The network becomes active when data transmission is started, or
+     * idle if there is no data transmission for a period of time.
+     * {@hide}
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_DATA_ACTIVITY_CHANGE = "android.net.conn.DATA_ACTIVITY_CHANGE";
+    /**
+     * The lookup key for an enum that indicates the network device type on which this data activity
+     * change happens.
+     * {@hide}
+     */
+    public static final String EXTRA_DEVICE_TYPE = "deviceType";
+    /**
+     * The lookup key for a boolean that indicates the device is active or not. {@code true} means
+     * it is actively sending or receiving data and {@code false} means it is idle.
+     * {@hide}
+     */
+    public static final String EXTRA_IS_ACTIVE = "isActive";
+    /**
+     * The lookup key for a long that contains the timestamp (nanos) of the radio state change.
+     * {@hide}
+     */
+    public static final String EXTRA_REALTIME_NS = "tsNanos";
+
+    /**
+     * Broadcast Action: The setting for background data usage has changed
+     * values. Use {@link #getBackgroundDataSetting()} to get the current value.
+     * <p>
+     * If an application uses the network in the background, it should listen
+     * for this broadcast and stop using the background data if the value is
+     * {@code false}.
+     * <p>
+     *
+     * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability
+     *             of background data depends on several combined factors, and
+     *             this broadcast is no longer sent. Instead, when background
+     *             data is unavailable, {@link #getActiveNetworkInfo()} will now
+     *             appear disconnected. During first boot after a platform
+     *             upgrade, this broadcast will be sent once if
+     *             {@link #getBackgroundDataSetting()} was {@code false} before
+     *             the upgrade.
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    @Deprecated
+    public static final String ACTION_BACKGROUND_DATA_SETTING_CHANGED =
+            "android.net.conn.BACKGROUND_DATA_SETTING_CHANGED";
+
+    /**
+     * Broadcast Action: The network connection may not be good
+     * uses {@code ConnectivityManager.EXTRA_INET_CONDITION} and
+     * {@code ConnectivityManager.EXTRA_NETWORK_INFO} to specify
+     * the network and it's condition.
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String INET_CONDITION_ACTION =
+            "android.net.conn.INET_CONDITION_ACTION";
+
+    /**
+     * Broadcast Action: A tetherable connection has come or gone.
+     * Uses {@code ConnectivityManager.EXTRA_AVAILABLE_TETHER},
+     * {@code ConnectivityManager.EXTRA_ACTIVE_TETHER} and
+     * {@code ConnectivityManager.EXTRA_ERRORED_TETHER} to indicate
+     * the current state of tethering.  Each include a list of
+     * interface names in that state (may be empty).
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_TETHER_STATE_CHANGED =
+            "android.net.conn.TETHER_STATE_CHANGED";
+
+    /**
+     * @hide
+     * gives a String[] listing all the interfaces configured for
+     * tethering and currently available for tethering.
+     */
+    public static final String EXTRA_AVAILABLE_TETHER = "availableArray";
+
+    /**
+     * @hide
+     * gives a String[] listing all the interfaces currently tethered
+     * (ie, has dhcp support and packets potentially forwarded/NATed)
+     */
+    public static final String EXTRA_ACTIVE_TETHER = "activeArray";
+
+    /**
+     * @hide
+     * gives a String[] listing all the interfaces we tried to tether and
+     * failed.  Use {@link #getLastTetherError} to find the error code
+     * for any interfaces listed here.
+     */
+    public static final String EXTRA_ERRORED_TETHER = "erroredArray";
+
+    /**
+     * Broadcast Action: The captive portal tracker has finished its test.
+     * Sent only while running Setup Wizard, in lieu of showing a user
+     * notification.
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_CAPTIVE_PORTAL_TEST_COMPLETED =
+            "android.net.conn.CAPTIVE_PORTAL_TEST_COMPLETED";
+    /**
+     * The lookup key for a boolean that indicates whether a captive portal was detected.
+     * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}.
+     * @hide
+     */
+    public static final String EXTRA_IS_CAPTIVE_PORTAL = "captivePortal";
+
+    /**
+     * The absence of a connection type.
+     * @hide
+     */
+    public static final int TYPE_NONE        = -1;
+
+    /**
+     * The Mobile data connection.  When active, all data traffic
+     * will use this network type's interface by default
+     * (it has a default route)
+     */
+    public static final int TYPE_MOBILE      = 0;
+    /**
+     * The WIFI data connection.  When active, all data traffic
+     * will use this network type's interface by default
+     * (it has a default route).
+     */
+    public static final int TYPE_WIFI        = 1;
+    /**
+     * An MMS-specific Mobile data connection.  This network type may use the
+     * same network interface as {@link #TYPE_MOBILE} or it may use a different
+     * one.  This is used by applications needing to talk to the carrier's
+     * Multimedia Messaging Service servers.
+     */
+    public static final int TYPE_MOBILE_MMS  = 2;
+    /**
+     * A SUPL-specific Mobile data connection.  This network type may use the
+     * same network interface as {@link #TYPE_MOBILE} or it may use a different
+     * one.  This is used by applications needing to talk to the carrier's
+     * Secure User Plane Location servers for help locating the device.
+     */
+    public static final int TYPE_MOBILE_SUPL = 3;
+    /**
+     * A DUN-specific Mobile data connection.  This network type may use the
+     * same network interface as {@link #TYPE_MOBILE} or it may use a different
+     * one.  This is sometimes by the system when setting up an upstream connection
+     * for tethering so that the carrier is aware of DUN traffic.
+     */
+    public static final int TYPE_MOBILE_DUN  = 4;
+    /**
+     * A High Priority Mobile data connection.  This network type uses the
+     * same network interface as {@link #TYPE_MOBILE} but the routing setup
+     * is different.  Only requesting processes will have access to the
+     * Mobile DNS servers and only IP's explicitly requested via {@link #requestRouteToHost}
+     * will route over this interface if no default route exists.
+     */
+    public static final int TYPE_MOBILE_HIPRI = 5;
+    /**
+     * The WiMAX data connection.  When active, all data traffic
+     * will use this network type's interface by default
+     * (it has a default route).
+     */
+    public static final int TYPE_WIMAX       = 6;
+
+    /**
+     * The Bluetooth data connection.  When active, all data traffic
+     * will use this network type's interface by default
+     * (it has a default route).
+     */
+    public static final int TYPE_BLUETOOTH   = 7;
+
+    /**
+     * Dummy data connection.  This should not be used on shipping devices.
+     */
+    public static final int TYPE_DUMMY       = 8;
+
+    /**
+     * The Ethernet data connection.  When active, all data traffic
+     * will use this network type's interface by default
+     * (it has a default route).
+     */
+    public static final int TYPE_ETHERNET    = 9;
+
+    /**
+     * Over the air Administration.
+     * {@hide}
+     */
+    public static final int TYPE_MOBILE_FOTA = 10;
+
+    /**
+     * IP Multimedia Subsystem.
+     * {@hide}
+     */
+    public static final int TYPE_MOBILE_IMS  = 11;
+
+    /**
+     * Carrier Branded Services.
+     * {@hide}
+     */
+    public static final int TYPE_MOBILE_CBS  = 12;
+
+    /**
+     * A Wi-Fi p2p connection. Only requesting processes will have access to
+     * the peers connected.
+     * {@hide}
+     */
+    public static final int TYPE_WIFI_P2P    = 13;
+
+    /**
+     * The network to use for initially attaching to the network
+     * {@hide}
+     */
+    public static final int TYPE_MOBILE_IA = 14;
+
+    /**
+     * The network that uses proxy to achieve connectivity.
+     * {@hide}
+     */
+    public static final int TYPE_PROXY = 16;
+
+    /** {@hide} */
+    public static final int MAX_RADIO_TYPE   = TYPE_PROXY;
+
+    /** {@hide} */
+    public static final int MAX_NETWORK_TYPE = TYPE_PROXY;
+
+    /**
+     * If you want to set the default network preference,you can directly
+     * change the networkAttributes array in framework's config.xml.
+     *
+     * @deprecated Since we support so many more networks now, the single
+     *             network default network preference can't really express
+     *             the hierarchy.  Instead, the default is defined by the
+     *             networkAttributes in config.xml.  You can determine
+     *             the current value by calling {@link #getNetworkPreference()}
+     *             from an App.
+     */
+    @Deprecated
+    public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI;
+
+    /**
+     * Default value for {@link Settings.Global#CONNECTIVITY_CHANGE_DELAY} in
+     * milliseconds.  This was introduced because IPv6 routes seem to take a
+     * moment to settle - trying network activity before the routes are adjusted
+     * can lead to packets using the wrong interface or having the wrong IP address.
+     * This delay is a bit crude, but in the future hopefully we will have kernel
+     * notifications letting us know when it's safe to use the new network.
+     *
+     * @hide
+     */
+    public static final int CONNECTIVITY_CHANGE_DELAY_DEFAULT = 3000;
+
+    /**
+     * @hide
+     */
+    public final static int INVALID_NET_ID = 0;
+
+    /**
+     * @hide
+     */
+    public final static int REQUEST_ID_UNSET = 0;
+
+    private final IConnectivityManager mService;
+
+    private final String mPackageName;
+
+    private INetworkManagementService mNMService;
+
+    /**
+     * Tests if a given integer represents a valid network type.
+     * @param networkType the type to be tested
+     * @return a boolean.  {@code true} if the type is valid, else {@code false}
+     */
+    public static boolean isNetworkTypeValid(int networkType) {
+        return networkType >= 0 && networkType <= MAX_NETWORK_TYPE;
+    }
+
+    /**
+     * Returns a non-localized string representing a given network type.
+     * ONLY used for debugging output.
+     * @param type the type needing naming
+     * @return a String for the given type, or a string version of the type ("87")
+     * if no name is known.
+     * {@hide}
+     */
+    public static String getNetworkTypeName(int type) {
+        switch (type) {
+            case TYPE_MOBILE:
+                return "MOBILE";
+            case TYPE_WIFI:
+                return "WIFI";
+            case TYPE_MOBILE_MMS:
+                return "MOBILE_MMS";
+            case TYPE_MOBILE_SUPL:
+                return "MOBILE_SUPL";
+            case TYPE_MOBILE_DUN:
+                return "MOBILE_DUN";
+            case TYPE_MOBILE_HIPRI:
+                return "MOBILE_HIPRI";
+            case TYPE_WIMAX:
+                return "WIMAX";
+            case TYPE_BLUETOOTH:
+                return "BLUETOOTH";
+            case TYPE_DUMMY:
+                return "DUMMY";
+            case TYPE_ETHERNET:
+                return "ETHERNET";
+            case TYPE_MOBILE_FOTA:
+                return "MOBILE_FOTA";
+            case TYPE_MOBILE_IMS:
+                return "MOBILE_IMS";
+            case TYPE_MOBILE_CBS:
+                return "MOBILE_CBS";
+            case TYPE_WIFI_P2P:
+                return "WIFI_P2P";
+            case TYPE_MOBILE_IA:
+                return "MOBILE_IA";
+            case TYPE_PROXY:
+                return "PROXY";
+            default:
+                return Integer.toString(type);
+        }
+    }
+
+    /**
+     * Checks if a given type uses the cellular data connection.
+     * This should be replaced in the future by a network property.
+     * @param networkType the type to check
+     * @return a boolean - {@code true} if uses cellular network, else {@code false}
+     * {@hide}
+     */
+    public static boolean isNetworkTypeMobile(int networkType) {
+        switch (networkType) {
+            case TYPE_MOBILE:
+            case TYPE_MOBILE_MMS:
+            case TYPE_MOBILE_SUPL:
+            case TYPE_MOBILE_DUN:
+            case TYPE_MOBILE_HIPRI:
+            case TYPE_MOBILE_FOTA:
+            case TYPE_MOBILE_IMS:
+            case TYPE_MOBILE_CBS:
+            case TYPE_MOBILE_IA:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Checks if the given network type is backed by a Wi-Fi radio.
+     *
+     * @hide
+     */
+    public static boolean isNetworkTypeWifi(int networkType) {
+        switch (networkType) {
+            case TYPE_WIFI:
+            case TYPE_WIFI_P2P:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Checks if the given network type should be exempt from VPN routing rules
+     *
+     * @hide
+     */
+    public static boolean isNetworkTypeExempt(int networkType) {
+        switch (networkType) {
+            case TYPE_MOBILE_MMS:
+            case TYPE_MOBILE_SUPL:
+            case TYPE_MOBILE_HIPRI:
+            case TYPE_MOBILE_IA:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Specifies the preferred network type.  When the device has more
+     * than one type available the preferred network type will be used.
+     *
+     * @param preference the network type to prefer over all others.  It is
+     *         unspecified what happens to the old preferred network in the
+     *         overall ordering.
+     * @deprecated Functionality has been removed as it no longer makes sense,
+     *             with many more than two networks - we'd need an array to express
+     *             preference.  Instead we use dynamic network properties of
+     *             the networks to describe their precedence.
+     */
+    public void setNetworkPreference(int preference) {
+    }
+
+    /**
+     * Retrieves the current preferred network type.
+     *
+     * @return an integer representing the preferred network type
+     *
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * @deprecated Functionality has been removed as it no longer makes sense,
+     *             with many more than two networks - we'd need an array to express
+     *             preference.  Instead we use dynamic network properties of
+     *             the networks to describe their precedence.
+     */
+    public int getNetworkPreference() {
+        return TYPE_NONE;
+    }
+
+    /**
+     * Returns details about the currently active default data network. When
+     * connected, this network is the default route for outgoing connections.
+     * You should always check {@link NetworkInfo#isConnected()} before initiating
+     * network traffic. This may return {@code null} when there is no default
+     * network.
+     *
+     * @return a {@link NetworkInfo} object for the current default network
+     *        or {@code null} if no network default network is currently active
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     */
+    public NetworkInfo getActiveNetworkInfo() {
+        try {
+            return mService.getActiveNetworkInfo();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns details about the currently active default data network
+     * for a given uid.  This is for internal use only to avoid spying
+     * other apps.
+     *
+     * @return a {@link NetworkInfo} object for the current default network
+     *        for the given uid or {@code null} if no default network is
+     *        available for the specified uid.
+     *
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}
+     * {@hide}
+     */
+    public NetworkInfo getActiveNetworkInfoForUid(int uid) {
+        try {
+            return mService.getActiveNetworkInfoForUid(uid);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns connection status information about a particular
+     * network type.
+     *
+     * @param networkType integer specifying which networkType in
+     *        which you're interested.
+     * @return a {@link NetworkInfo} object for the requested
+     *        network type or {@code null} if the type is not
+     *        supported by the device.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     */
+    public NetworkInfo getNetworkInfo(int networkType) {
+        try {
+            return mService.getNetworkInfo(networkType);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns connection status information about all network
+     * types supported by the device.
+     *
+     * @return an array of {@link NetworkInfo} objects.  Check each
+     * {@link NetworkInfo#getType} for which type each applies.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     */
+    public NetworkInfo[] getAllNetworkInfo() {
+        try {
+            return mService.getAllNetworkInfo();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns details about the Provisioning or currently active default data network. When
+     * connected, this network is the default route for outgoing connections.
+     * You should always check {@link NetworkInfo#isConnected()} before initiating
+     * network traffic. This may return {@code null} when there is no default
+     * network.
+     *
+     * @return a {@link NetworkInfo} object for the current default network
+     *        or {@code null} if no network default network is currently active
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     *
+     * {@hide}
+     */
+    public NetworkInfo getProvisioningOrActiveNetworkInfo() {
+        try {
+            return mService.getProvisioningOrActiveNetworkInfo();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns the IP information for the current default network.
+     *
+     * @return a {@link LinkProperties} object describing the IP info
+     *        for the current default network, or {@code null} if there
+     *        is no current default network.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public LinkProperties getActiveLinkProperties() {
+        try {
+            return mService.getActiveLinkProperties();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns the IP information for a given network type.
+     *
+     * @param networkType the network type of interest.
+     * @return a {@link LinkProperties} object describing the IP info
+     *        for the given networkType, or {@code null} if there is
+     *        no current default network.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public LinkProperties getLinkProperties(int networkType) {
+        try {
+            return mService.getLinkPropertiesForType(networkType);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Get the {@link LinkProperties} for the given {@link Network}.  This
+     * will return {@code null} if the network is unknown.
+     *
+     * @param network The {@link Network} object identifying the network in question.
+     * @return The {@link LinkProperties} for the network, or {@code null}.
+     **/
+    public LinkProperties getLinkProperties(Network network) {
+        try {
+            return mService.getLinkProperties(network);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Get the {@link NetworkCapabilities} for the given {@link Network}.  This
+     * will return {@code null} if the network is unknown.
+     *
+     * @param network The {@link Network} object identifying the network in question.
+     * @return The {@link NetworkCapabilities} for the network, or {@code null}.
+     */
+    public NetworkCapabilities getNetworkCapabilities(Network network) {
+        try {
+            return mService.getNetworkCapabilities(network);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Tells each network type to set its radio power state as directed.
+     *
+     * @param turnOn a boolean, {@code true} to turn the radios on,
+     *        {@code false} to turn them off.
+     * @return a boolean, {@code true} indicating success.  All network types
+     *        will be tried, even if some fail.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * {@hide}
+     */
+// TODO - check for any callers and remove
+//    public boolean setRadios(boolean turnOn) {
+//        try {
+//            return mService.setRadios(turnOn);
+//        } catch (RemoteException e) {
+//            return false;
+//        }
+//    }
+
+    /**
+     * Tells a given networkType to set its radio power state as directed.
+     *
+     * @param networkType the int networkType of interest.
+     * @param turnOn a boolean, {@code true} to turn the radio on,
+     *        {@code} false to turn it off.
+     * @return a boolean, {@code true} indicating success.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * {@hide}
+     */
+// TODO - check for any callers and remove
+//    public boolean setRadio(int networkType, boolean turnOn) {
+//        try {
+//            return mService.setRadio(networkType, turnOn);
+//        } catch (RemoteException e) {
+//            return false;
+//        }
+//    }
+
+    /**
+     * Tells the underlying networking system that the caller wants to
+     * begin using the named feature. The interpretation of {@code feature}
+     * is completely up to each networking implementation.
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * @param networkType specifies which network the request pertains to
+     * @param feature the name of the feature to be used
+     * @return an integer value representing the outcome of the request.
+     * The interpretation of this value is specific to each networking
+     * implementation+feature combination, except that the value {@code -1}
+     * always indicates failure.
+     *
+     * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api.
+     */
+    public int startUsingNetworkFeature(int networkType, String feature) {
+        NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
+        if (netCap == null) {
+            Log.d(TAG, "Can't satisfy startUsingNetworkFeature for " + networkType + ", " +
+                    feature);
+            return PhoneConstants.APN_REQUEST_FAILED;
+        }
+
+        NetworkRequest request = null;
+        synchronized (sLegacyRequests) {
+            LegacyRequest l = sLegacyRequests.get(netCap);
+            if (l != null) {
+                Log.d(TAG, "renewing startUsingNetworkFeature request " + l.networkRequest);
+                renewRequestLocked(l);
+                if (l.currentNetwork != null) {
+                    return PhoneConstants.APN_ALREADY_ACTIVE;
+                } else {
+                    return PhoneConstants.APN_REQUEST_STARTED;
+                }
+            }
+
+            request = requestNetworkForFeatureLocked(netCap);
+        }
+        if (request != null) {
+            Log.d(TAG, "starting startUsingNeworkFeature for request " + request);
+            return PhoneConstants.APN_REQUEST_STARTED;
+        } else {
+            Log.d(TAG, " request Failed");
+            return PhoneConstants.APN_REQUEST_FAILED;
+        }
+    }
+
+    /**
+     * Tells the underlying networking system that the caller is finished
+     * using the named feature. The interpretation of {@code feature}
+     * is completely up to each networking implementation.
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * @param networkType specifies which network the request pertains to
+     * @param feature the name of the feature that is no longer needed
+     * @return an integer value representing the outcome of the request.
+     * The interpretation of this value is specific to each networking
+     * implementation+feature combination, except that the value {@code -1}
+     * always indicates failure.
+     *
+     * @deprecated Deprecated in favor of the cleaner {@link #requestNetwork} api.
+     */
+    public int stopUsingNetworkFeature(int networkType, String feature) {
+        NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature);
+        if (netCap == null) {
+            Log.d(TAG, "Can't satisfy stopUsingNetworkFeature for " + networkType + ", " +
+                    feature);
+            return -1;
+        }
+
+        NetworkRequest request = removeRequestForFeature(netCap);
+        if (request != null) {
+            Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature);
+            releaseNetworkRequest(request);
+        }
+        return 1;
+    }
+
+    /**
+     * Removes the NET_CAPABILITY_NOT_RESTRICTED capability from the given
+     * NetworkCapabilities object if all the capabilities it provides are
+     * typically provided by restricted networks.
+     *
+     * TODO: consider:
+     * - Moving to NetworkCapabilities
+     * - Renaming it to guessRestrictedCapability and make it set the
+     *   restricted capability bit in addition to clearing it.
+     * @hide
+     */
+    public static void maybeMarkCapabilitiesRestricted(NetworkCapabilities nc) {
+        for (int capability : nc.getCapabilities()) {
+            switch (capability) {
+                case NetworkCapabilities.NET_CAPABILITY_CBS:
+                case NetworkCapabilities.NET_CAPABILITY_DUN:
+                case NetworkCapabilities.NET_CAPABILITY_EIMS:
+                case NetworkCapabilities.NET_CAPABILITY_FOTA:
+                case NetworkCapabilities.NET_CAPABILITY_IA:
+                case NetworkCapabilities.NET_CAPABILITY_IMS:
+                case NetworkCapabilities.NET_CAPABILITY_RCS:
+                case NetworkCapabilities.NET_CAPABILITY_XCAP:
+                case NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED: //there by default
+                    continue;
+                default:
+                    // At least one capability usually provided by unrestricted
+                    // networks. Conclude that this network is unrestricted.
+                    return;
+            }
+        }
+        // All the capabilities are typically provided by restricted networks.
+        // Conclude that this network is restricted.
+        nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
+    }
+
+    private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) {
+        if (networkType == TYPE_MOBILE) {
+            int cap = -1;
+            if ("enableMMS".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_MMS;
+            } else if ("enableSUPL".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_SUPL;
+            } else if ("enableDUN".equals(feature) || "enableDUNAlways".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_DUN;
+            } else if ("enableHIPRI".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_INTERNET;
+            } else if ("enableFOTA".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_FOTA;
+            } else if ("enableIMS".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_IMS;
+            } else if ("enableCBS".equals(feature)) {
+                cap = NetworkCapabilities.NET_CAPABILITY_CBS;
+            } else {
+                return null;
+            }
+            NetworkCapabilities netCap = new NetworkCapabilities();
+            netCap.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR).addCapability(cap);
+            maybeMarkCapabilitiesRestricted(netCap);
+            return netCap;
+        } else if (networkType == TYPE_WIFI) {
+            if ("p2p".equals(feature)) {
+                NetworkCapabilities netCap = new NetworkCapabilities();
+                netCap.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
+                netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P);
+                maybeMarkCapabilitiesRestricted(netCap);
+                return netCap;
+            }
+        }
+        return null;
+    }
+
+    private int legacyTypeForNetworkCapabilities(NetworkCapabilities netCap) {
+        if (netCap == null) return TYPE_NONE;
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) {
+            return TYPE_MOBILE_CBS;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) {
+            return TYPE_MOBILE_IMS;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) {
+            return TYPE_MOBILE_FOTA;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) {
+            return TYPE_MOBILE_DUN;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) {
+            return TYPE_MOBILE_SUPL;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) {
+            return TYPE_MOBILE_MMS;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) {
+            return TYPE_MOBILE_HIPRI;
+        }
+        if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P)) {
+            return TYPE_WIFI_P2P;
+        }
+        return TYPE_NONE;
+    }
+
+    private static class LegacyRequest {
+        NetworkCapabilities networkCapabilities;
+        NetworkRequest networkRequest;
+        int expireSequenceNumber;
+        Network currentNetwork;
+        int delay = -1;
+        NetworkCallbackListener networkCallbackListener = new NetworkCallbackListener() {
+            @Override
+            public void onAvailable(NetworkRequest request, Network network) {
+                currentNetwork = network;
+                Log.d(TAG, "startUsingNetworkFeature got Network:" + network);
+                setProcessDefaultNetworkForHostResolution(network);
+            }
+            @Override
+            public void onLost(NetworkRequest request, Network network) {
+                if (network.equals(currentNetwork)) {
+                    currentNetwork = null;
+                    setProcessDefaultNetworkForHostResolution(null);
+                }
+                Log.d(TAG, "startUsingNetworkFeature lost Network:" + network);
+            }
+        };
+    }
+
+    private HashMap<NetworkCapabilities, LegacyRequest> sLegacyRequests =
+            new HashMap<NetworkCapabilities, LegacyRequest>();
+
+    private NetworkRequest findRequestForFeature(NetworkCapabilities netCap) {
+        synchronized (sLegacyRequests) {
+            LegacyRequest l = sLegacyRequests.get(netCap);
+            if (l != null) return l.networkRequest;
+        }
+        return null;
+    }
+
+    private void renewRequestLocked(LegacyRequest l) {
+        l.expireSequenceNumber++;
+        Log.d(TAG, "renewing request to seqNum " + l.expireSequenceNumber);
+        sendExpireMsgForFeature(l.networkCapabilities, l.expireSequenceNumber, l.delay);
+    }
+
+    private void expireRequest(NetworkCapabilities netCap, int sequenceNum) {
+        int ourSeqNum = -1;
+        synchronized (sLegacyRequests) {
+            LegacyRequest l = sLegacyRequests.get(netCap);
+            if (l == null) return;
+            ourSeqNum = l.expireSequenceNumber;
+            if (l.expireSequenceNumber == sequenceNum) {
+                releaseNetworkRequest(l.networkRequest);
+                sLegacyRequests.remove(netCap);
+            }
+        }
+        Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum);
+    }
+
+    private NetworkRequest requestNetworkForFeatureLocked(NetworkCapabilities netCap) {
+        int delay = -1;
+        int type = legacyTypeForNetworkCapabilities(netCap);
+        try {
+            delay = mService.getRestoreDefaultNetworkDelay(type);
+        } catch (RemoteException e) {}
+        LegacyRequest l = new LegacyRequest();
+        l.networkCapabilities = netCap;
+        l.delay = delay;
+        l.expireSequenceNumber = 0;
+        l.networkRequest = sendRequestForNetwork(netCap, l.networkCallbackListener, 0,
+                REQUEST, type);
+        if (l.networkRequest == null) return null;
+        sLegacyRequests.put(netCap, l);
+        sendExpireMsgForFeature(netCap, l.expireSequenceNumber, delay);
+        return l.networkRequest;
+    }
+
+    private void sendExpireMsgForFeature(NetworkCapabilities netCap, int seqNum, int delay) {
+        if (delay >= 0) {
+            Log.d(TAG, "sending expire msg with seqNum " + seqNum + " and delay " + delay);
+            Message msg = sCallbackHandler.obtainMessage(EXPIRE_LEGACY_REQUEST, seqNum, 0, netCap);
+            sCallbackHandler.sendMessageDelayed(msg, delay);
+        }
+    }
+
+    private NetworkRequest removeRequestForFeature(NetworkCapabilities netCap) {
+        synchronized (sLegacyRequests) {
+            LegacyRequest l = sLegacyRequests.remove(netCap);
+            if (l == null) return null;
+            return l.networkRequest;
+        }
+    }
+
+    /**
+     * Ensure that a network route exists to deliver traffic to the specified
+     * host via the specified network interface. An attempt to add a route that
+     * already exists is ignored, but treated as successful.
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * @param networkType the type of the network over which traffic to the specified
+     * host is to be routed
+     * @param hostAddress the IP address of the host to which the route is desired
+     * @return {@code true} on success, {@code false} on failure
+     *
+     * @deprecated Deprecated in favor of the {@link #requestNetwork},
+     *             {@link #setProcessDefaultNetwork} and {@link Network#getSocketFactory} api.
+     */
+    public boolean requestRouteToHost(int networkType, int hostAddress) {
+        InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress);
+
+        if (inetAddress == null) {
+            return false;
+        }
+
+        return requestRouteToHostAddress(networkType, inetAddress);
+    }
+
+    /**
+     * Ensure that a network route exists to deliver traffic to the specified
+     * host via the specified network interface. An attempt to add a route that
+     * already exists is ignored, but treated as successful.
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * @param networkType the type of the network over which traffic to the specified
+     * host is to be routed
+     * @param hostAddress the IP address of the host to which the route is desired
+     * @return {@code true} on success, {@code false} on failure
+     * @hide
+     * @deprecated Deprecated in favor of the {@link #requestNetwork} and
+     *             {@link #setProcessDefaultNetwork} api.
+     */
+    public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) {
+        byte[] address = hostAddress.getAddress();
+        try {
+            return mService.requestRouteToHostAddress(networkType, address, mPackageName);
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Returns the value of the setting for background data usage. If false,
+     * applications should not use the network if the application is not in the
+     * foreground. Developers should respect this setting, and check the value
+     * of this before performing any background data operations.
+     * <p>
+     * All applications that have background services that use the network
+     * should listen to {@link #ACTION_BACKGROUND_DATA_SETTING_CHANGED}.
+     * <p>
+     * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability of
+     * background data depends on several combined factors, and this method will
+     * always return {@code true}. Instead, when background data is unavailable,
+     * {@link #getActiveNetworkInfo()} will now appear disconnected.
+     *
+     * @return Whether background data usage is allowed.
+     */
+    @Deprecated
+    public boolean getBackgroundDataSetting() {
+        // assume that background data is allowed; final authority is
+        // NetworkInfo which may be blocked.
+        return true;
+    }
+
+    /**
+     * Sets the value of the setting for background data usage.
+     *
+     * @param allowBackgroundData Whether an application should use data while
+     *            it is in the background.
+     *
+     * @attr ref android.Manifest.permission#CHANGE_BACKGROUND_DATA_SETTING
+     * @see #getBackgroundDataSetting()
+     * @hide
+     */
+    @Deprecated
+    public void setBackgroundDataSetting(boolean allowBackgroundData) {
+        // ignored
+    }
+
+    /**
+     * Return quota status for the current active network, or {@code null} if no
+     * network is active. Quota status can change rapidly, so these values
+     * shouldn't be cached.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     *
+     * @hide
+     */
+    public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
+        try {
+            return mService.getActiveNetworkQuotaInfo();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * @hide
+     * @deprecated Talk to TelephonyManager directly
+     */
+    public boolean getMobileDataEnabled() {
+        IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE);
+        if (b != null) {
+            try {
+                ITelephony it = ITelephony.Stub.asInterface(b);
+                return it.getDataEnabled();
+            } catch (RemoteException e) { }
+        }
+        return false;
+    }
+
+    /**
+     * Callback for use with {@link ConnectivityManager#registerNetworkActiveListener} to
+     * find out when the current network has gone in to a high power state.
+     */
+    public interface OnNetworkActiveListener {
+        /**
+         * Called on the main thread of the process to report that the current data network
+         * has become active, and it is now a good time to perform any pending network
+         * operations.  Note that this listener only tells you when the network becomes
+         * active; if at any other time you want to know whether it is active (and thus okay
+         * to initiate network traffic), you can retrieve its instantaneous state with
+         * {@link ConnectivityManager#isNetworkActive}.
+         */
+        public void onNetworkActive();
+    }
+
+    private INetworkManagementService getNetworkManagementService() {
+        synchronized (this) {
+            if (mNMService != null) {
+                return mNMService;
+            }
+            IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+            mNMService = INetworkManagementService.Stub.asInterface(b);
+            return mNMService;
+        }
+    }
+
+    private final ArrayMap<OnNetworkActiveListener, INetworkActivityListener>
+            mNetworkActivityListeners
+                    = new ArrayMap<OnNetworkActiveListener, INetworkActivityListener>();
+
+    /**
+     * Start listening to reports when the data network is active, meaning it is
+     * a good time to perform network traffic.  Use {@link #isNetworkActive()}
+     * to determine the current state of the network after registering the listener.
+     *
+     * @param l The listener to be told when the network is active.
+     */
+    public void registerNetworkActiveListener(final OnNetworkActiveListener l) {
+        INetworkActivityListener rl = new INetworkActivityListener.Stub() {
+            @Override
+            public void onNetworkActive() throws RemoteException {
+                l.onNetworkActive();
+            }
+        };
+
+        try {
+            getNetworkManagementService().registerNetworkActivityListener(rl);
+            mNetworkActivityListeners.put(l, rl);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Remove network active listener previously registered with
+     * {@link #registerNetworkActiveListener}.
+     *
+     * @param l Previously registered listener.
+     */
+    public void unregisterNetworkActiveListener(OnNetworkActiveListener l) {
+        INetworkActivityListener rl = mNetworkActivityListeners.get(l);
+        if (rl == null) {
+            throw new IllegalArgumentException("Listener not registered: " + l);
+        }
+        try {
+            getNetworkManagementService().unregisterNetworkActivityListener(rl);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Return whether the data network is currently active.  An active network means that
+     * it is currently in a high power state for performing data transmission.  On some
+     * types of networks, it may be expensive to move and stay in such a state, so it is
+     * more power efficient to batch network traffic together when the radio is already in
+     * this state.  This method tells you whether right now is currently a good time to
+     * initiate network traffic, as the network is already active.
+     */
+    public boolean isNetworkActive() {
+        try {
+            return getNetworkManagementService().isNetworkActive();
+        } catch (RemoteException e) {
+        }
+        return false;
+    }
+
+    /**
+     * {@hide}
+     */
+    public ConnectivityManager(IConnectivityManager service, String packageName) {
+        mService = checkNotNull(service, "missing IConnectivityManager");
+        mPackageName = checkNotNull(packageName, "missing package name");
+    }
+
+    /** {@hide} */
+    public static ConnectivityManager from(Context context) {
+        return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+    }
+
+    /**
+     * Get the set of tetherable, available interfaces.  This list is limited by
+     * device configuration and current interface existence.
+     *
+     * @return an array of 0 or more Strings of tetherable interface names.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetherableIfaces() {
+        try {
+            return mService.getTetherableIfaces();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Get the set of tethered interfaces.
+     *
+     * @return an array of 0 or more String of currently tethered interface names.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetheredIfaces() {
+        try {
+            return mService.getTetheredIfaces();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Get the set of interface names which attempted to tether but
+     * failed.  Re-attempting to tether may cause them to reset to the Tethered
+     * state.  Alternatively, causing the interface to be destroyed and recreated
+     * may cause them to reset to the available state.
+     * {@link ConnectivityManager#getLastTetherError} can be used to get more
+     * information on the cause of the errors.
+     *
+     * @return an array of 0 or more String indicating the interface names
+     *        which failed to tether.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetheringErroredIfaces() {
+        try {
+            return mService.getTetheringErroredIfaces();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Attempt to tether the named interface.  This will setup a dhcp server
+     * on the interface, forward and NAT IP packets and forward DNS requests
+     * to the best active upstream network interface.  Note that if no upstream
+     * IP network interface is available, dhcp will still run and traffic will be
+     * allowed between the tethered devices and this device, though upstream net
+     * access will of course fail until an upstream network interface becomes
+     * active.
+     *
+     * @param iface the interface name to tether.
+     * @return error a {@code TETHER_ERROR} value indicating success or failure type
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * {@hide}
+     */
+    public int tether(String iface) {
+        try {
+            return mService.tether(iface);
+        } catch (RemoteException e) {
+            return TETHER_ERROR_SERVICE_UNAVAIL;
+        }
+    }
+
+    /**
+     * Stop tethering the named interface.
+     *
+     * @param iface the interface name to untether.
+     * @return error a {@code TETHER_ERROR} value indicating success or failure type
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * {@hide}
+     */
+    public int untether(String iface) {
+        try {
+            return mService.untether(iface);
+        } catch (RemoteException e) {
+            return TETHER_ERROR_SERVICE_UNAVAIL;
+        }
+    }
+
+    /**
+     * Check if the device allows for tethering.  It may be disabled via
+     * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or
+     * due to device configuration.
+     *
+     * @return a boolean - {@code true} indicating Tethering is supported.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public boolean isTetheringSupported() {
+        try {
+            return mService.isTetheringSupported();
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Get the list of regular expressions that define any tetherable
+     * USB network interfaces.  If USB tethering is not supported by the
+     * device, this list should be empty.
+     *
+     * @return an array of 0 or more regular expression Strings defining
+     *        what interfaces are considered tetherable usb interfaces.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetherableUsbRegexs() {
+        try {
+            return mService.getTetherableUsbRegexs();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Get the list of regular expressions that define any tetherable
+     * Wifi network interfaces.  If Wifi tethering is not supported by the
+     * device, this list should be empty.
+     *
+     * @return an array of 0 or more regular expression Strings defining
+     *        what interfaces are considered tetherable wifi interfaces.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetherableWifiRegexs() {
+        try {
+            return mService.getTetherableWifiRegexs();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Get the list of regular expressions that define any tetherable
+     * Bluetooth network interfaces.  If Bluetooth tethering is not supported by the
+     * device, this list should be empty.
+     *
+     * @return an array of 0 or more regular expression Strings defining
+     *        what interfaces are considered tetherable bluetooth interfaces.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public String[] getTetherableBluetoothRegexs() {
+        try {
+            return mService.getTetherableBluetoothRegexs();
+        } catch (RemoteException e) {
+            return new String[0];
+        }
+    }
+
+    /**
+     * Attempt to both alter the mode of USB and Tethering of USB.  A
+     * utility method to deal with some of the complexity of USB - will
+     * attempt to switch to Rndis and subsequently tether the resulting
+     * interface on {@code true} or turn off tethering and switch off
+     * Rndis on {@code false}.
+     *
+     * @param enable a boolean - {@code true} to enable tethering
+     * @return error a {@code TETHER_ERROR} value indicating success or failure type
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CHANGE_NETWORK_STATE}.
+     * {@hide}
+     */
+    public int setUsbTethering(boolean enable) {
+        try {
+            return mService.setUsbTethering(enable);
+        } catch (RemoteException e) {
+            return TETHER_ERROR_SERVICE_UNAVAIL;
+        }
+    }
+
+    /** {@hide} */
+    public static final int TETHER_ERROR_NO_ERROR           = 0;
+    /** {@hide} */
+    public static final int TETHER_ERROR_UNKNOWN_IFACE      = 1;
+    /** {@hide} */
+    public static final int TETHER_ERROR_SERVICE_UNAVAIL    = 2;
+    /** {@hide} */
+    public static final int TETHER_ERROR_UNSUPPORTED        = 3;
+    /** {@hide} */
+    public static final int TETHER_ERROR_UNAVAIL_IFACE      = 4;
+    /** {@hide} */
+    public static final int TETHER_ERROR_MASTER_ERROR       = 5;
+    /** {@hide} */
+    public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6;
+    /** {@hide} */
+    public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7;
+    /** {@hide} */
+    public static final int TETHER_ERROR_ENABLE_NAT_ERROR     = 8;
+    /** {@hide} */
+    public static final int TETHER_ERROR_DISABLE_NAT_ERROR    = 9;
+    /** {@hide} */
+    public static final int TETHER_ERROR_IFACE_CFG_ERROR      = 10;
+
+    /**
+     * Get a more detailed error code after a Tethering or Untethering
+     * request asynchronously failed.
+     *
+     * @param iface The name of the interface of interest
+     * @return error The error code of the last error tethering or untethering the named
+     *               interface
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     */
+    public int getLastTetherError(String iface) {
+        try {
+            return mService.getLastTetherError(iface);
+        } catch (RemoteException e) {
+            return TETHER_ERROR_SERVICE_UNAVAIL;
+        }
+    }
+
+    /**
+     * Try to ensure the device stays awake until we connect with the next network.
+     * Actually just holds a wakelock for a number of seconds while we try to connect
+     * to any default networks.  This will expire if the timeout passes or if we connect
+     * to a default after this is called.  For internal use only.
+     *
+     * @param forWhom the name of the network going down for logging purposes
+     * @return {@code true} on success, {@code false} on failure
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
+     * {@hide}
+     */
+    public boolean requestNetworkTransitionWakelock(String forWhom) {
+        try {
+            mService.requestNetworkTransitionWakelock(forWhom);
+            return true;
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Report network connectivity status.  This is currently used only
+     * to alter status bar UI.
+     *
+     * @param networkType The type of network you want to report on
+     * @param percentage The quality of the connection 0 is bad, 100 is good
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#STATUS_BAR}.
+     * {@hide}
+     */
+    public void reportInetCondition(int networkType, int percentage) {
+        try {
+            mService.reportInetCondition(networkType, percentage);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Report a problem network to the framework.  This provides a hint to the system
+     * that there might be connectivity problems on this network and may cause 
+     * the framework to re-evaluate network connectivity and/or switch to another
+     * network.
+     *
+     * @param network The {@link Network} the application was attempting to use
+     *                or {@code null} to indicate the current default network.
+     */
+    public void reportBadNetwork(Network network) {
+        try {
+            mService.reportBadNetwork(network);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Set a network-independent global http proxy.  This is not normally what you want
+     * for typical HTTP proxies - they are general network dependent.  However if you're
+     * doing something unusual like general internal filtering this may be useful.  On
+     * a private network where the proxy is not accessible, you may break HTTP using this.
+     *
+     * @param p The a {@link ProxyInfo} object defining the new global
+     *        HTTP proxy.  A {@code null} value will clear the global HTTP proxy.
+     *
+     * <p>This method requires the call to hold the permission
+     * android.Manifest.permission#CONNECTIVITY_INTERNAL.
+     * @hide
+     */
+    public void setGlobalProxy(ProxyInfo p) {
+        try {
+            mService.setGlobalProxy(p);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Retrieve any network-independent global HTTP proxy.
+     *
+     * @return {@link ProxyInfo} for the current global HTTP proxy or {@code null}
+     *        if no global HTTP proxy is set.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * @hide
+     */
+    public ProxyInfo getGlobalProxy() {
+        try {
+            return mService.getGlobalProxy();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Get the HTTP proxy settings for the current default network.  Note that
+     * if a global proxy is set, it will override any per-network setting.
+     *
+     * @return the {@link ProxyInfo} for the current HTTP proxy, or {@code null} if no
+     *        HTTP proxy is active.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * {@hide}
+     * @deprecated Deprecated in favor of {@link #getLinkProperties}
+     */
+    public ProxyInfo getProxy() {
+        try {
+            return mService.getProxy();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Sets a secondary requirement bit for the given networkType.
+     * This requirement bit is generally under the control of the carrier
+     * or its agents and is not directly controlled by the user.
+     *
+     * @param networkType The network who's dependence has changed
+     * @param met Boolean - true if network use is OK, false if not
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
+     * {@hide}
+     */
+    public void setDataDependency(int networkType, boolean met) {
+        try {
+            mService.setDataDependency(networkType, met);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Returns true if the hardware supports the given network type
+     * else it returns false.  This doesn't indicate we have coverage
+     * or are authorized onto a network, just whether or not the
+     * hardware supports it.  For example a GSM phone without a SIM
+     * should still return {@code true} for mobile data, but a wifi only
+     * tablet would return {@code false}.
+     *
+     * @param networkType The network type we'd like to check
+     * @return {@code true} if supported, else {@code false}
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     * @hide
+     */
+    public boolean isNetworkSupported(int networkType) {
+        try {
+            return mService.isNetworkSupported(networkType);
+        } catch (RemoteException e) {}
+        return false;
+    }
+
+    /**
+     * Returns if the currently active data network is metered. A network is
+     * classified as metered when the user is sensitive to heavy data usage on
+     * that connection due to monetary costs, data limitations or
+     * battery/performance issues. You should check this before doing large
+     * data transfers, and warn the user or delay the operation until another
+     * network is available.
+     *
+     * @return {@code true} if large transfers should be avoided, otherwise
+     *        {@code false}.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE}.
+     */
+    public boolean isActiveNetworkMetered() {
+        try {
+            return mService.isActiveNetworkMetered();
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * If the LockdownVpn mechanism is enabled, updates the vpn
+     * with a reload of its profile.
+     *
+     * @return a boolean with {@code} indicating success
+     *
+     * <p>This method can only be called by the system UID
+     * {@hide}
+     */
+    public boolean updateLockdownVpn() {
+        try {
+            return mService.updateLockdownVpn();
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Signal that the captive portal check on the indicated network
+     * is complete and whether its a captive portal or not.
+     *
+     * @param info the {@link NetworkInfo} object for the networkType
+     *        in question.
+     * @param isCaptivePortal true/false.
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
+     * {@hide}
+     */
+    public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) {
+        try {
+            mService.captivePortalCheckCompleted(info, isCaptivePortal);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Supply the backend messenger for a network tracker
+     *
+     * @param networkType NetworkType to set
+     * @param messenger {@link Messenger}
+     * {@hide}
+     */
+    public void supplyMessenger(int networkType, Messenger messenger) {
+        try {
+            mService.supplyMessenger(networkType, messenger);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Check mobile provisioning.
+     *
+     * @param suggestedTimeOutMs, timeout in milliseconds
+     *
+     * @return time out that will be used, maybe less that suggestedTimeOutMs
+     * -1 if an error.
+     *
+     * {@hide}
+     */
+    public int checkMobileProvisioning(int suggestedTimeOutMs) {
+        int timeOutMs = -1;
+        try {
+            timeOutMs = mService.checkMobileProvisioning(suggestedTimeOutMs);
+        } catch (RemoteException e) {
+        }
+        return timeOutMs;
+    }
+
+    /**
+     * Get the mobile provisioning url.
+     * {@hide}
+     */
+    public String getMobileProvisioningUrl() {
+        try {
+            return mService.getMobileProvisioningUrl();
+        } catch (RemoteException e) {
+        }
+        return null;
+    }
+
+    /**
+     * Get the mobile redirected provisioning url.
+     * {@hide}
+     */
+    public String getMobileRedirectedProvisioningUrl() {
+        try {
+            return mService.getMobileRedirectedProvisioningUrl();
+        } catch (RemoteException e) {
+        }
+        return null;
+    }
+
+    /**
+     * get the information about a specific network link
+     * @hide
+     */
+    public LinkQualityInfo getLinkQualityInfo(int networkType) {
+        try {
+            LinkQualityInfo li = mService.getLinkQualityInfo(networkType);
+            return li;
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * get the information of currently active network link
+     * @hide
+     */
+    public LinkQualityInfo getActiveLinkQualityInfo() {
+        try {
+            LinkQualityInfo li = mService.getActiveLinkQualityInfo();
+            return li;
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * get the information of all network links
+     * @hide
+     */
+    public LinkQualityInfo[] getAllLinkQualityInfo() {
+        try {
+            LinkQualityInfo[] li = mService.getAllLinkQualityInfo();
+            return li;
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Set sign in error notification to visible or in visible
+     *
+     * @param visible
+     * @param networkType
+     *
+     * {@hide}
+     */
+    public void setProvisioningNotificationVisible(boolean visible, int networkType,
+            String extraInfo, String url) {
+        try {
+            mService.setProvisioningNotificationVisible(visible, networkType, extraInfo, url);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /**
+     * Set the value for enabling/disabling airplane mode
+     *
+     * @param enable whether to enable airplane mode or not
+     *
+     * <p>This method requires the call to hold the permission
+     * {@link android.Manifest.permission#CONNECTIVITY_INTERNAL}.
+     * @hide
+     */
+    public void setAirplaneMode(boolean enable) {
+        try {
+            mService.setAirplaneMode(enable);
+        } catch (RemoteException e) {
+        }
+    }
+
+    /** {@hide} */
+    public void registerNetworkFactory(Messenger messenger, String name) {
+        try {
+            mService.registerNetworkFactory(messenger, name);
+        } catch (RemoteException e) { }
+    }
+
+    /** {@hide} */
+    public void unregisterNetworkFactory(Messenger messenger) {
+        try {
+            mService.unregisterNetworkFactory(messenger);
+        } catch (RemoteException e) { }
+    }
+
+    /** {@hide} */
+    public void registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp,
+            NetworkCapabilities nc, int score) {
+        try {
+            mService.registerNetworkAgent(messenger, ni, lp, nc, score);
+        } catch (RemoteException e) { }
+    }
+
+    /**
+     * Base class for NetworkRequest callbacks.  Used for notifications about network
+     * changes.  Should be extended by applications wanting notifications.
+     */
+    public static class NetworkCallbackListener {
+        /** @hide */
+        public static final int PRECHECK     = 1;
+        /** @hide */
+        public static final int AVAILABLE    = 2;
+        /** @hide */
+        public static final int LOSING       = 3;
+        /** @hide */
+        public static final int LOST         = 4;
+        /** @hide */
+        public static final int UNAVAIL      = 5;
+        /** @hide */
+        public static final int CAP_CHANGED  = 6;
+        /** @hide */
+        public static final int PROP_CHANGED = 7;
+        /** @hide */
+        public static final int CANCELED     = 8;
+
+        /**
+         * @hide
+         * Called whenever the framework connects to a network that it may use to
+         * satisfy this request
+         */
+        public void onPreCheck(NetworkRequest networkRequest, Network network) {}
+
+        /**
+         * Called when the framework connects and has declared new network ready for use.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         * @param network The {@link Network} of the satisfying network.
+         */
+        public void onAvailable(NetworkRequest networkRequest, Network network) {}
+
+        /**
+         * Called when the network is about to be disconnected.  Often paired with an
+         * {@link NetworkCallbackListener#onAvailable} call with the new replacement network
+         * for graceful handover.  This may not be called if we have a hard loss
+         * (loss without warning).  This may be followed by either a
+         * {@link NetworkCallbackListener#onLost} call or a
+         * {@link NetworkCallbackListener#onAvailable} call for this network depending
+         * on whether we lose or regain it.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         * @param network The {@link Network} of the failing network.
+         * @param maxSecToLive The time in seconds the framework will attempt to keep the
+         *                     network connected.  Note that the network may suffers a
+         *                     hard loss at any time.
+         */
+        public void onLosing(NetworkRequest networkRequest, Network network, int maxSecToLive) {}
+
+        /**
+         * Called when the framework has a hard loss of the network or when the
+         * graceful failure ends.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         * @param network The {@link Network} lost.
+         */
+        public void onLost(NetworkRequest networkRequest, Network network) {}
+
+        /**
+         * Called if no network is found in the given timeout time.  If no timeout is given,
+         * this will not be called.
+         * @hide
+         */
+        public void onUnavailable(NetworkRequest networkRequest) {}
+
+        /**
+         * Called when the network the framework connected to for this request
+         * changes capabilities but still satisfies the stated need.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         * @param network The {@link Network} whose capabilities have changed.
+         * @param networkCapabilities The new {@link NetworkCapabilities} for this network.
+         */
+        public void onNetworkCapabilitiesChanged(NetworkRequest networkRequest, Network network,
+                NetworkCapabilities networkCapabilities) {}
+
+        /**
+         * Called when the network the framework connected to for this request
+         * changes {@link LinkProperties}.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         * @param network The {@link Network} whose link properties have changed.
+         * @param linkProperties The new {@link LinkProperties} for this network.
+         */
+        public void onLinkPropertiesChanged(NetworkRequest networkRequest, Network network,
+                LinkProperties linkProperties) {}
+
+        /**
+         * Called when a {@link #releaseNetworkRequest} call concludes and the registered
+         * callbacks will no longer be used.
+         *
+         * @param networkRequest The {@link NetworkRequest} used to initiate the request.
+         */
+        public void onReleased(NetworkRequest networkRequest) {}
+    }
+
+    private static final int BASE = Protocol.BASE_CONNECTIVITY_MANAGER;
+    /** @hide obj = pair(NetworkRequest, Network) */
+    public static final int CALLBACK_PRECHECK           = BASE + 1;
+    /** @hide obj = pair(NetworkRequest, Network) */
+    public static final int CALLBACK_AVAILABLE          = BASE + 2;
+    /** @hide obj = pair(NetworkRequest, Network), arg1 = ttl */
+    public static final int CALLBACK_LOSING             = BASE + 3;
+    /** @hide obj = pair(NetworkRequest, Network) */
+    public static final int CALLBACK_LOST               = BASE + 4;
+    /** @hide obj = NetworkRequest */
+    public static final int CALLBACK_UNAVAIL            = BASE + 5;
+    /** @hide obj = pair(NetworkRequest, Network) */
+    public static final int CALLBACK_CAP_CHANGED        = BASE + 6;
+    /** @hide obj = pair(NetworkRequest, Network) */
+    public static final int CALLBACK_IP_CHANGED         = BASE + 7;
+    /** @hide obj = NetworkRequest */
+    public static final int CALLBACK_RELEASED           = BASE + 8;
+    /** @hide */
+    public static final int CALLBACK_EXIT               = BASE + 9;
+    /** @hide obj = NetworkCapabilities, arg1 = seq number */
+    private static final int EXPIRE_LEGACY_REQUEST      = BASE + 10;
+
+    private class CallbackHandler extends Handler {
+        private final HashMap<NetworkRequest, NetworkCallbackListener>mCallbackMap;
+        private final AtomicInteger mRefCount;
+        private static final String TAG = "ConnectivityManager.CallbackHandler";
+        private final ConnectivityManager mCm;
+
+        CallbackHandler(Looper looper, HashMap<NetworkRequest, NetworkCallbackListener>callbackMap,
+                AtomicInteger refCount, ConnectivityManager cm) {
+            super(looper);
+            mCallbackMap = callbackMap;
+            mRefCount = refCount;
+            mCm = cm;
+        }
+
+        @Override
+        public void handleMessage(Message message) {
+            Log.d(TAG, "CM callback handler got msg " + message.what);
+            switch (message.what) {
+                case CALLBACK_PRECHECK: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        callbacks.onPreCheck(request, getNetwork(message));
+                    } else {
+                        Log.e(TAG, "callback not found for PRECHECK message");
+                    }
+                    break;
+                }
+                case CALLBACK_AVAILABLE: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        callbacks.onAvailable(request, getNetwork(message));
+                    } else {
+                        Log.e(TAG, "callback not found for AVAILABLE message");
+                    }
+                    break;
+                }
+                case CALLBACK_LOSING: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        callbacks.onLosing(request, getNetwork(message), message.arg1);
+                    } else {
+                        Log.e(TAG, "callback not found for LOSING message");
+                    }
+                    break;
+                }
+                case CALLBACK_LOST: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        callbacks.onLost(request, getNetwork(message));
+                    } else {
+                        Log.e(TAG, "callback not found for LOST message");
+                    }
+                    break;
+                }
+                case CALLBACK_UNAVAIL: {
+                    NetworkRequest req = (NetworkRequest)message.obj;
+                    NetworkCallbackListener callbacks = null;
+                    synchronized(mCallbackMap) {
+                        callbacks = mCallbackMap.get(req);
+                    }
+                    if (callbacks != null) {
+                        callbacks.onUnavailable(req);
+                    } else {
+                        Log.e(TAG, "callback not found for UNAVAIL message");
+                    }
+                    break;
+                }
+                case CALLBACK_CAP_CHANGED: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        Network network = getNetwork(message);
+                        NetworkCapabilities cap = mCm.getNetworkCapabilities(network);
+
+                        callbacks.onNetworkCapabilitiesChanged(request, network, cap);
+                    } else {
+                        Log.e(TAG, "callback not found for CHANGED message");
+                    }
+                    break;
+                }
+                case CALLBACK_IP_CHANGED: {
+                    NetworkRequest request = getNetworkRequest(message);
+                    NetworkCallbackListener callbacks = getCallbacks(request);
+                    if (callbacks != null) {
+                        Network network = getNetwork(message);
+                        LinkProperties lp = mCm.getLinkProperties(network);
+
+                        callbacks.onLinkPropertiesChanged(request, network, lp);
+                    } else {
+                        Log.e(TAG, "callback not found for CHANGED message");
+                    }
+                    break;
+                }
+                case CALLBACK_RELEASED: {
+                    NetworkRequest req = (NetworkRequest)message.obj;
+                    NetworkCallbackListener callbacks = null;
+                    synchronized(mCallbackMap) {
+                        callbacks = mCallbackMap.remove(req);
+                    }
+                    if (callbacks != null) {
+                        callbacks.onReleased(req);
+                    } else {
+                        Log.e(TAG, "callback not found for CANCELED message");
+                    }
+                    synchronized(mRefCount) {
+                        if (mRefCount.decrementAndGet() == 0) {
+                            getLooper().quit();
+                        }
+                    }
+                    break;
+                }
+                case CALLBACK_EXIT: {
+                    Log.d(TAG, "Listener quiting");
+                    getLooper().quit();
+                    break;
+                }
+                case EXPIRE_LEGACY_REQUEST: {
+                    expireRequest((NetworkCapabilities)message.obj, message.arg1);
+                    break;
+                }
+            }
+        }
+
+        private NetworkRequest getNetworkRequest(Message msg) {
+            return (NetworkRequest)(msg.obj);
+        }
+        private NetworkCallbackListener getCallbacks(NetworkRequest req) {
+            synchronized(mCallbackMap) {
+                return mCallbackMap.get(req);
+            }
+        }
+        private Network getNetwork(Message msg) {
+            return new Network(msg.arg2);
+        }
+        private NetworkCallbackListener removeCallbacks(Message msg) {
+            NetworkRequest req = (NetworkRequest)msg.obj;
+            synchronized(mCallbackMap) {
+                return mCallbackMap.remove(req);
+            }
+        }
+    }
+
+    private void addCallbackListener() {
+        synchronized(sCallbackRefCount) {
+            if (sCallbackRefCount.incrementAndGet() == 1) {
+                // TODO - switch this over to a ManagerThread or expire it when done
+                HandlerThread callbackThread = new HandlerThread("ConnectivityManager");
+                callbackThread.start();
+                sCallbackHandler = new CallbackHandler(callbackThread.getLooper(),
+                        sNetworkCallbackListener, sCallbackRefCount, this);
+            }
+        }
+    }
+
+    private void removeCallbackListener() {
+        synchronized(sCallbackRefCount) {
+            if (sCallbackRefCount.decrementAndGet() == 0) {
+                sCallbackHandler.obtainMessage(CALLBACK_EXIT).sendToTarget();
+                sCallbackHandler = null;
+            }
+        }
+    }
+
+    static final HashMap<NetworkRequest, NetworkCallbackListener> sNetworkCallbackListener =
+            new HashMap<NetworkRequest, NetworkCallbackListener>();
+    static final AtomicInteger sCallbackRefCount = new AtomicInteger(0);
+    static CallbackHandler sCallbackHandler = null;
+
+    private final static int LISTEN  = 1;
+    private final static int REQUEST = 2;
+
+    private NetworkRequest sendRequestForNetwork(NetworkCapabilities need,
+            NetworkCallbackListener networkCallbackListener, int timeoutSec, int action,
+            int legacyType) {
+        NetworkRequest networkRequest = null;
+        if (networkCallbackListener == null) {
+            throw new IllegalArgumentException("null NetworkCallbackListener");
+        }
+        if (need == null) throw new IllegalArgumentException("null NetworkCapabilities");
+        try {
+            addCallbackListener();
+            if (action == LISTEN) {
+                networkRequest = mService.listenForNetwork(need, new Messenger(sCallbackHandler),
+                        new Binder());
+            } else {
+                networkRequest = mService.requestNetwork(need, new Messenger(sCallbackHandler),
+                        timeoutSec, new Binder(), legacyType);
+            }
+            if (networkRequest != null) {
+                synchronized(sNetworkCallbackListener) {
+                    sNetworkCallbackListener.put(networkRequest, networkCallbackListener);
+                }
+            }
+        } catch (RemoteException e) {}
+        if (networkRequest == null) removeCallbackListener();
+        return networkRequest;
+    }
+
+    /**
+     * Request a network to satisfy a set of {@link NetworkCapabilities}.
+     *
+     * This {@link NetworkRequest} will live until released via
+     * {@link #releaseNetworkRequest} or the calling application exits.
+     * Status of the request can be followed by listening to the various
+     * callbacks described in {@link NetworkCallbackListener}.  The {@link Network}
+     * can be used to direct traffic to the network.
+     *
+     * @param need {@link NetworkCapabilities} required by this request.
+     * @param networkCallbackListener The {@link NetworkCallbackListener} to be utilized for this
+     *                         request.  Note the callbacks can be shared by multiple
+     *                         requests and the NetworkRequest token utilized to
+     *                         determine to which request the callback relates.
+     * @return A {@link NetworkRequest} object identifying the request.
+     */
+    public NetworkRequest requestNetwork(NetworkCapabilities need,
+            NetworkCallbackListener networkCallbackListener) {
+        return sendRequestForNetwork(need, networkCallbackListener, 0, REQUEST, TYPE_NONE);
+    }
+
+    /**
+     * Request a network to satisfy a set of {@link NetworkCapabilities}, limited
+     * by a timeout.
+     *
+     * This function behaves identically to the non-timedout version, but if a suitable
+     * network is not found within the given time (in Seconds) the
+     * {@link NetworkCallbackListener#unavailable} callback is called.  The request must
+     * still be released normally by calling {@link releaseNetworkRequest}.
+     * @param need {@link NetworkCapabilities} required by this request.
+     * @param networkCallbackListener The callbacks to be utilized for this request.  Note
+     *                         the callbacks can be shared by multiple requests and
+     *                         the NetworkRequest token utilized to determine to which
+     *                         request the callback relates.
+     * @param timeoutSec The time in seconds to attempt looking for a suitable network
+     *                   before {@link NetworkCallbackListener#unavailable} is called.
+     * @return A {@link NetworkRequest} object identifying the request.
+     * @hide
+     */
+    public NetworkRequest requestNetwork(NetworkCapabilities need,
+            NetworkCallbackListener networkCallbackListener, int timeoutSec) {
+        return sendRequestForNetwork(need, networkCallbackListener, timeoutSec, REQUEST,
+                TYPE_NONE);
+    }
+
+    /**
+     * The maximum number of seconds the framework will look for a suitable network
+     * during a timeout-equiped call to {@link requestNetwork}.
+     * {@hide}
+     */
+    public final static int MAX_NETWORK_REQUEST_TIMEOUT_SEC = 100 * 60;
+
+    /**
+     * The lookup key for a {@link Network} object included with the intent after
+     * succesfully finding a network for the applications request.  Retrieve it with
+     * {@link android.content.Intent#getParcelableExtra(String)}.
+     */
+    public static final String EXTRA_NETWORK_REQUEST_NETWORK = "networkRequestNetwork";
+
+    /**
+     * The lookup key for a {@link NetworkCapabilities} object included with the intent after
+     * succesfully finding a network for the applications request.  Retrieve it with
+     * {@link android.content.Intent#getParcelableExtra(String)}.
+     */
+    public static final String EXTRA_NETWORK_REQUEST_NETWORK_CAPABILITIES =
+            "networkRequestNetworkCapabilities";
+
+
+    /**
+     * Request a network to satisfy a set of {@link NetworkCapabilities}.
+     *
+     * This function behavies identically to the callback-equiped version, but instead
+     * of {@link NetworkCallbackListener} a {@link PendingIntent} is used.  This means
+     * the request may outlive the calling application and get called back when a suitable
+     * network is found.
+     * <p>
+     * The operation is an Intent broadcast that goes to a broadcast receiver that
+     * you registered with {@link Context#registerReceiver} or through the
+     * &lt;receiver&gt; tag in an AndroidManifest.xml file
+     * <p>
+     * The operation Intent is delivered with two extras, a {@link Network} typed
+     * extra called {@link #EXTRA_NETWORK_REQUEST_NETWORK} and a {@link NetworkCapabilities}
+     * typed extra called {@link #EXTRA_NETWORK_REQUEST_NETWORK_CAPABILITIES} containing
+     * the original requests parameters.  It is important to create a new,
+     * {@link NetworkCallbackListener} based request before completing the processing of the
+     * Intent to reserve the network or it will be released shortly after the Intent
+     * is processed.
+     * <p>
+     * If there is already an request for this Intent registered (with the equality of
+     * two Intents defined by {@link Intent#filterEquals}), then it will be removed and
+     * replaced by this one, effectively releasing the previous {@link NetworkRequest}.
+     * <p>
+     * The request may be released normally by calling {@link #releaseNetworkRequest}.
+     *
+     * @param need {@link NetworkCapabilities} required by this request.
+     * @param operation Action to perform when the network is available (corresponds
+     *                  to the {@link NetworkCallbackListener#onAvailable} call.  Typically
+     *                  comes from {@link PendingIntent#getBroadcast}.
+     * @return A {@link NetworkRequest} object identifying the request.
+     */
+    public NetworkRequest requestNetwork(NetworkCapabilities need, PendingIntent operation) {
+        try {
+            return mService.pendingRequestForNetwork(need, operation);
+        } catch (RemoteException e) {}
+        return null;
+    }
+
+    /**
+     * Registers to receive notifications about all networks which satisfy the given
+     * {@link NetworkCapabilities}.  The callbacks will continue to be called until
+     * either the application exits or the request is released using
+     * {@link #releaseNetworkRequest}.
+     *
+     * @param need {@link NetworkCapabilities} required by this request.
+     * @param networkCallbackListener The {@link NetworkCallbackListener} to be called as suitable
+     *                         networks change state.
+     * @return A {@link NetworkRequest} object identifying the request.
+     */
+    public NetworkRequest listenForNetwork(NetworkCapabilities need,
+            NetworkCallbackListener networkCallbackListener) {
+        return sendRequestForNetwork(need, networkCallbackListener, 0, LISTEN, TYPE_NONE);
+    }
+
+    /**
+     * Releases a {@link NetworkRequest} generated either through a {@link #requestNetwork}
+     * or a {@link #listenForNetwork} call.  The {@link NetworkCallbackListener} given in the
+     * earlier call may continue receiving calls until the
+     * {@link NetworkCallbackListener#onReleased} function is called, signifying the end
+     * of the request.
+     *
+     * @param networkRequest The {@link NetworkRequest} generated by an earlier call to
+     *                       {@link #requestNetwork} or {@link #listenForNetwork}.
+     */
+    public void releaseNetworkRequest(NetworkRequest networkRequest) {
+        if (networkRequest == null) throw new IllegalArgumentException("null NetworkRequest");
+        try {
+            mService.releaseNetworkRequest(networkRequest);
+        } catch (RemoteException e) {}
+    }
+
+    /**
+     * Binds the current process to {@code network}.  All Sockets created in the future
+     * (and not explicitly bound via a bound SocketFactory from
+     * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to
+     * {@code network}.  All host name resolutions will be limited to {@code network} as well.
+     * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to
+     * work and all host name resolutions will fail.  This is by design so an application doesn't
+     * accidentally use Sockets it thinks are still bound to a particular {@link Network}.
+     * To clear binding pass {@code null} for {@code network}.  Using individually bound
+     * Sockets created by Network.getSocketFactory().createSocket() and
+     * performing network-specific host name resolutions via
+     * {@link Network#getAllByName Network.getAllByName} is preferred to calling
+     * {@code setProcessDefaultNetwork}.
+     *
+     * @param network The {@link Network} to bind the current process to, or {@code null} to clear
+     *                the current binding.
+     * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid.
+     */
+    public static boolean setProcessDefaultNetwork(Network network) {
+        if (network == null) {
+            NetworkUtils.unbindProcessToNetwork();
+        } else {
+            NetworkUtils.bindProcessToNetwork(network.netId);
+        }
+        // TODO fix return value
+        return true;
+    }
+
+    /**
+     * Returns the {@link Network} currently bound to this process via
+     * {@link #setProcessDefaultNetwork}, or {@code null} if no {@link Network} is explicitly bound.
+     *
+     * @return {@code Network} to which this process is bound, or {@code null}.
+     */
+    public static Network getProcessDefaultNetwork() {
+        int netId = NetworkUtils.getNetworkBoundToProcess();
+        if (netId == 0) return null;
+        return new Network(netId);
+    }
+
+    /**
+     * Binds host resolutions performed by this process to {@code network}.
+     * {@link #setProcessDefaultNetwork} takes precedence over this setting.
+     *
+     * @param network The {@link Network} to bind host resolutions from the current process to, or
+     *                {@code null} to clear the current binding.
+     * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid.
+     * @hide
+     * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}.
+     */
+    public static boolean setProcessDefaultNetworkForHostResolution(Network network) {
+        if (network == null) {
+            NetworkUtils.unbindProcessToNetworkForHostResolution();
+        } else {
+            NetworkUtils.bindProcessToNetworkForHostResolution(network.netId);
+        }
+        // TODO hook up the return value.
+        return true;
+    }
+}
diff --git a/core/java/android/net/DhcpInfo.java b/core/java/android/net/DhcpInfo.java
new file mode 100644
index 0000000..788d7d9
--- /dev/null
+++ b/core/java/android/net/DhcpInfo.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcelable;
+import android.os.Parcel;
+
+/**
+ * A simple object for retrieving the results of a DHCP request.
+ */
+public class DhcpInfo implements Parcelable {
+    public int ipAddress;
+    public int gateway;
+    public int netmask;
+    public int dns1;
+    public int dns2;
+    public int serverAddress;
+
+    public int leaseDuration;
+
+    public DhcpInfo() {
+        super();
+    }
+
+    /** copy constructor {@hide} */
+    public DhcpInfo(DhcpInfo source) {
+        if (source != null) {
+            ipAddress = source.ipAddress;
+            gateway = source.gateway;
+            netmask = source.netmask;
+            dns1 = source.dns1;
+            dns2 = source.dns2;
+            serverAddress = source.serverAddress;
+            leaseDuration = source.leaseDuration;
+        }
+    }
+
+    public String toString() {
+        StringBuffer str = new StringBuffer();
+
+        str.append("ipaddr "); putAddress(str, ipAddress);
+        str.append(" gateway "); putAddress(str, gateway);
+        str.append(" netmask "); putAddress(str, netmask);
+        str.append(" dns1 "); putAddress(str, dns1);
+        str.append(" dns2 "); putAddress(str, dns2);
+        str.append(" DHCP server "); putAddress(str, serverAddress);
+        str.append(" lease ").append(leaseDuration).append(" seconds");
+
+        return str.toString();
+    }
+
+    private static void putAddress(StringBuffer buf, int addr) {
+        buf.append(NetworkUtils.intToInetAddress(addr).getHostAddress());
+    }
+
+    /** Implement the Parcelable interface {@hide} */
+    public int describeContents() {
+        return 0;
+    }
+
+    /** Implement the Parcelable interface {@hide} */
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(ipAddress);
+        dest.writeInt(gateway);
+        dest.writeInt(netmask);
+        dest.writeInt(dns1);
+        dest.writeInt(dns2);
+        dest.writeInt(serverAddress);
+        dest.writeInt(leaseDuration);
+    }
+
+    /** Implement the Parcelable interface {@hide} */
+    public static final Creator<DhcpInfo> CREATOR =
+        new Creator<DhcpInfo>() {
+            public DhcpInfo createFromParcel(Parcel in) {
+                DhcpInfo info = new DhcpInfo();
+                info.ipAddress = in.readInt();
+                info.gateway = in.readInt();
+                info.netmask = in.readInt();
+                info.dns1 = in.readInt();
+                info.dns2 = in.readInt();
+                info.serverAddress = in.readInt();
+                info.leaseDuration = in.readInt();
+                return info;
+            }
+
+            public DhcpInfo[] newArray(int size) {
+                return new DhcpInfo[size];
+            }
+        };
+}
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
new file mode 100644
index 0000000..5f1ff3e
--- /dev/null
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -0,0 +1,175 @@
+/**
+ * Copyright (c) 2008, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.app.PendingIntent;
+import android.net.LinkQualityInfo;
+import android.net.LinkProperties;
+import android.net.Network;
+import android.net.NetworkCapabilities;
+import android.net.NetworkInfo;
+import android.net.NetworkQuotaInfo;
+import android.net.NetworkRequest;
+import android.net.NetworkState;
+import android.net.ProxyInfo;
+import android.os.IBinder;
+import android.os.Messenger;
+import android.os.ParcelFileDescriptor;
+import android.os.ResultReceiver;
+
+import com.android.internal.net.LegacyVpnInfo;
+import com.android.internal.net.VpnConfig;
+import com.android.internal.net.VpnProfile;
+
+/**
+ * Interface that answers queries about, and allows changing, the
+ * state of network connectivity.
+ */
+/** {@hide} */
+interface IConnectivityManager
+{
+    // Keep this in sync with framework/native/services/connectivitymanager/ConnectivityManager.h
+    void markSocketAsUser(in ParcelFileDescriptor socket, int uid);
+
+    NetworkInfo getActiveNetworkInfo();
+    NetworkInfo getActiveNetworkInfoForUid(int uid);
+    NetworkInfo getNetworkInfo(int networkType);
+    NetworkInfo[] getAllNetworkInfo();
+
+    NetworkInfo getProvisioningOrActiveNetworkInfo();
+
+    boolean isNetworkSupported(int networkType);
+
+    LinkProperties getActiveLinkProperties();
+    LinkProperties getLinkPropertiesForType(int networkType);
+    LinkProperties getLinkProperties(in Network network);
+
+    NetworkCapabilities getNetworkCapabilities(in Network network);
+
+    NetworkState[] getAllNetworkState();
+
+    NetworkQuotaInfo getActiveNetworkQuotaInfo();
+    boolean isActiveNetworkMetered();
+
+    int startUsingNetworkFeature(int networkType, in String feature,
+            in IBinder binder);
+
+    int stopUsingNetworkFeature(int networkType, in String feature);
+
+    boolean requestRouteToHost(int networkType, int hostAddress, String packageName);
+
+    boolean requestRouteToHostAddress(int networkType, in byte[] hostAddress, String packageName);
+
+    /** Policy control over specific {@link NetworkStateTracker}. */
+    void setPolicyDataEnable(int networkType, boolean enabled);
+
+    int tether(String iface);
+
+    int untether(String iface);
+
+    int getLastTetherError(String iface);
+
+    boolean isTetheringSupported();
+
+    String[] getTetherableIfaces();
+
+    String[] getTetheredIfaces();
+
+    String[] getTetheringErroredIfaces();
+
+    String[] getTetherableUsbRegexs();
+
+    String[] getTetherableWifiRegexs();
+
+    String[] getTetherableBluetoothRegexs();
+
+    int setUsbTethering(boolean enable);
+
+    void requestNetworkTransitionWakelock(in String forWhom);
+
+    void reportInetCondition(int networkType, int percentage);
+
+    void reportBadNetwork(in Network network);
+
+    ProxyInfo getGlobalProxy();
+
+    void setGlobalProxy(in ProxyInfo p);
+
+    ProxyInfo getProxy();
+
+    void setDataDependency(int networkType, boolean met);
+
+    boolean protectVpn(in ParcelFileDescriptor socket);
+
+    boolean prepareVpn(String oldPackage, String newPackage);
+
+    ParcelFileDescriptor establishVpn(in VpnConfig config);
+
+    VpnConfig getVpnConfig();
+
+    void startLegacyVpn(in VpnProfile profile);
+
+    LegacyVpnInfo getLegacyVpnInfo();
+
+    boolean updateLockdownVpn();
+
+    void captivePortalCheckCompleted(in NetworkInfo info, boolean isCaptivePortal);
+
+    void supplyMessenger(int networkType, in Messenger messenger);
+
+    int findConnectionTypeForIface(in String iface);
+
+    int checkMobileProvisioning(int suggestedTimeOutMs);
+
+    String getMobileProvisioningUrl();
+
+    String getMobileRedirectedProvisioningUrl();
+
+    LinkQualityInfo getLinkQualityInfo(int networkType);
+
+    LinkQualityInfo getActiveLinkQualityInfo();
+
+    LinkQualityInfo[] getAllLinkQualityInfo();
+
+    void setProvisioningNotificationVisible(boolean visible, int networkType, in String extraInfo,
+            in String url);
+
+    void setAirplaneMode(boolean enable);
+
+    void registerNetworkFactory(in Messenger messenger, in String name);
+
+    void unregisterNetworkFactory(in Messenger messenger);
+
+    void registerNetworkAgent(in Messenger messenger, in NetworkInfo ni, in LinkProperties lp,
+            in NetworkCapabilities nc, int score);
+
+    NetworkRequest requestNetwork(in NetworkCapabilities networkCapabilities,
+            in Messenger messenger, int timeoutSec, in IBinder binder, int legacy);
+
+    NetworkRequest pendingRequestForNetwork(in NetworkCapabilities networkCapabilities,
+            in PendingIntent operation);
+
+    NetworkRequest listenForNetwork(in NetworkCapabilities networkCapabilities,
+            in Messenger messenger, in IBinder binder);
+
+    void pendingListenForNetwork(in NetworkCapabilities networkCapabilities,
+            in PendingIntent operation);
+
+    void releaseNetworkRequest(in NetworkRequest networkRequest);
+
+    int getRestoreDefaultNetworkDelay(int networkType);
+}
diff --git a/core/java/android/net/IpConfiguration.java b/core/java/android/net/IpConfiguration.java
new file mode 100644
index 0000000..4730bab
--- /dev/null
+++ b/core/java/android/net/IpConfiguration.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.net.LinkProperties;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Objects;
+
+/**
+ * A class representing a configured network.
+ * @hide
+ */
+public class IpConfiguration implements Parcelable {
+    private static final String TAG = "IpConfiguration";
+
+    public enum IpAssignment {
+        /* Use statically configured IP settings. Configuration can be accessed
+         * with linkProperties */
+        STATIC,
+        /* Use dynamically configured IP settigns */
+        DHCP,
+        /* no IP details are assigned, this is used to indicate
+         * that any existing IP settings should be retained */
+        UNASSIGNED
+    }
+
+    public IpAssignment ipAssignment;
+
+    public enum ProxySettings {
+        /* No proxy is to be used. Any existing proxy settings
+         * should be cleared. */
+        NONE,
+        /* Use statically configured proxy. Configuration can be accessed
+         * with linkProperties */
+        STATIC,
+        /* no proxy details are assigned, this is used to indicate
+         * that any existing proxy settings should be retained */
+        UNASSIGNED,
+        /* Use a Pac based proxy.
+         */
+        PAC
+    }
+
+    public ProxySettings proxySettings;
+
+    public LinkProperties linkProperties;
+
+    public IpConfiguration(IpConfiguration source) {
+        if (source != null) {
+            ipAssignment = source.ipAssignment;
+            proxySettings = source.proxySettings;
+            linkProperties = new LinkProperties(source.linkProperties);
+        } else {
+            ipAssignment = IpAssignment.UNASSIGNED;
+            proxySettings = ProxySettings.UNASSIGNED;
+            linkProperties = new LinkProperties();
+        }
+    }
+
+    public IpConfiguration() {
+         this(null);
+    }
+
+    public IpConfiguration(IpAssignment ipAssignment,
+                           ProxySettings proxySettings,
+                           LinkProperties linkProperties) {
+        this.ipAssignment = ipAssignment;
+        this.proxySettings = proxySettings;
+        this.linkProperties = new LinkProperties(linkProperties);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sbuf = new StringBuilder();
+        sbuf.append("IP assignment: " + ipAssignment.toString());
+        sbuf.append("\n");
+        sbuf.append("Proxy settings: " + proxySettings.toString());
+        sbuf.append("\n");
+        sbuf.append(linkProperties.toString());
+        sbuf.append("\n");
+
+        return sbuf.toString();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) {
+            return true;
+        }
+
+        if (!(o instanceof IpConfiguration)) {
+            return false;
+        }
+
+        IpConfiguration other = (IpConfiguration) o;
+        return this.ipAssignment == other.ipAssignment &&
+                this.proxySettings == other.proxySettings &&
+                Objects.equals(this.linkProperties, other.linkProperties);
+    }
+
+    @Override
+    public int hashCode() {
+        return 13 + (linkProperties != null ? linkProperties.hashCode() : 0) +
+               17 * ipAssignment.ordinal() +
+               47 * proxySettings.ordinal();
+    }
+
+    /** Implement the Parcelable interface */
+    public int describeContents() {
+        return 0;
+    }
+
+    /** Implement the Parcelable interface  */
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(ipAssignment.name());
+        dest.writeString(proxySettings.name());
+        dest.writeParcelable(linkProperties, flags);
+    }
+
+    /** Implement the Parcelable interface */
+    public static final Creator<IpConfiguration> CREATOR =
+        new Creator<IpConfiguration>() {
+            public IpConfiguration createFromParcel(Parcel in) {
+                IpConfiguration config = new IpConfiguration();
+                config.ipAssignment = IpAssignment.valueOf(in.readString());
+                config.proxySettings = ProxySettings.valueOf(in.readString());
+                config.linkProperties = in.readParcelable(null);
+                return config;
+            }
+
+            public IpConfiguration[] newArray(int size) {
+                return new IpConfiguration[size];
+            }
+        };
+}
diff --git a/core/java/android/net/IpPrefix.java b/core/java/android/net/IpPrefix.java
new file mode 100644
index 0000000..dfe0384
--- /dev/null
+++ b/core/java/android/net/IpPrefix.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+
+/**
+ * This class represents an IP prefix, i.e., a contiguous block of IP addresses aligned on a
+ * power of two boundary (also known as an "IP subnet"). A prefix is specified by two pieces of
+ * information:
+ *
+ * <ul>
+ * <li>A starting IP address (IPv4 or IPv6). This is the first IP address of the prefix.
+ * <li>A prefix length. This specifies the length of the prefix by specifing the number of bits
+ *     in the IP address, starting from the most significant bit in network byte order, that
+ *     are constant for all addresses in the prefix.
+ * </ul>
+ *
+ * For example, the prefix <code>192.0.2.0/24</code> covers the 256 IPv4 addresses from
+ * <code>192.0.2.0</code> to <code>192.0.2.255</code>, inclusive, and the prefix
+ * <code>2001:db8:1:2</code>  covers the 2^64 IPv6 addresses from <code>2001:db8:1:2::</code> to
+ * <code>2001:db8:1:2:ffff:ffff:ffff:ffff</code>, inclusive.
+ *
+ * Objects of this class are immutable.
+ */
+public class IpPrefix implements Parcelable {
+    private final byte[] address;  // network byte order
+    private final int prefixLength;
+
+    /**
+     * Constructs a new {@code IpPrefix} from a byte array containing an IPv4 or IPv6 address in
+     * network byte order and a prefix length.
+     *
+     * @param address the IP address. Must be non-null and exactly 4 or 16 bytes long.
+     * @param prefixLength the prefix length. Must be &gt;= 0 and &lt;= (32 or 128) (IPv4 or IPv6).
+     *
+     * @hide
+     */
+    public IpPrefix(byte[] address, int prefixLength) {
+        if (address.length != 4 && address.length != 16) {
+            throw new IllegalArgumentException(
+                    "IpPrefix has " + address.length + " bytes which is neither 4 nor 16");
+        }
+        if (prefixLength < 0 || prefixLength > (address.length * 8)) {
+            throw new IllegalArgumentException("IpPrefix with " + address.length +
+                    " bytes has invalid prefix length " + prefixLength);
+        }
+        this.address = address.clone();
+        this.prefixLength = prefixLength;
+        // TODO: Validate that the non-prefix bits are zero
+    }
+
+    /**
+     * @hide
+     */
+    public IpPrefix(InetAddress address, int prefixLength) {
+        this(address.getAddress(), prefixLength);
+    }
+
+    /**
+     * Compares this {@code IpPrefix} object against the specified object in {@code obj}. Two
+     * objects are equal if they have the same startAddress and prefixLength.
+     *
+     * @param obj the object to be tested for equality.
+     * @return {@code true} if both objects are equal, {@code false} otherwise.
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof IpPrefix)) {
+            return false;
+        }
+        IpPrefix that = (IpPrefix) obj;
+        return Arrays.equals(this.address, that.address) && this.prefixLength == that.prefixLength;
+    }
+
+    /**
+     * Gets the hashcode of the represented IP prefix.
+     *
+     * @return the appropriate hashcode value.
+     */
+    @Override
+    public int hashCode() {
+        return Arrays.hashCode(address) + 11 * prefixLength;
+    }
+
+    /**
+     * Returns a copy of the first IP address in the prefix. Modifying the returned object does not
+     * change this object's contents.
+     *
+     * @return the address in the form of a byte array.
+     */
+    public InetAddress getAddress() {
+        try {
+            return InetAddress.getByAddress(address);
+        } catch (UnknownHostException e) {
+            // Cannot happen. InetAddress.getByAddress can only throw an exception if the byte
+            // array is the wrong length, but we check that in the constructor.
+            return null;
+        }
+    }
+
+    /**
+     * Returns a copy of the IP address bytes in network order (the highest order byte is the zeroth
+     * element). Modifying the returned array does not change this object's contents.
+     *
+     * @return the address in the form of a byte array.
+     */
+    public byte[] getRawAddress() {
+        return address.clone();
+    }
+
+    /**
+     * Returns the prefix length of this {@code IpAddress}.
+     *
+     * @return the prefix length.
+     */
+    public int getPrefixLength() {
+        return prefixLength;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeByteArray(address);
+        dest.writeInt(prefixLength);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public static final Creator<IpPrefix> CREATOR =
+            new Creator<IpPrefix>() {
+                public IpPrefix createFromParcel(Parcel in) {
+                    byte[] address = in.createByteArray();
+                    int prefixLength = in.readInt();
+                    return new IpPrefix(address, prefixLength);
+                }
+
+                public IpPrefix[] newArray(int size) {
+                    return new IpPrefix[size];
+                }
+            };
+}
diff --git a/core/java/android/net/LinkAddress.java b/core/java/android/net/LinkAddress.java
new file mode 100644
index 0000000..5246078
--- /dev/null
+++ b/core/java/android/net/LinkAddress.java
@@ -0,0 +1,332 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.UnknownHostException;
+
+import static android.system.OsConstants.IFA_F_DADFAILED;
+import static android.system.OsConstants.IFA_F_DEPRECATED;
+import static android.system.OsConstants.IFA_F_TENTATIVE;
+import static android.system.OsConstants.RT_SCOPE_HOST;
+import static android.system.OsConstants.RT_SCOPE_LINK;
+import static android.system.OsConstants.RT_SCOPE_SITE;
+import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
+
+/**
+ * Identifies an IP address on a network link.
+ *
+ * A {@code LinkAddress} consists of:
+ * <ul>
+ * <li>An IP address and prefix length (e.g., {@code 2001:db8::1/64} or {@code 192.0.2.1/24}).
+ * The address must be unicast, as multicast addresses cannot be assigned to interfaces.
+ * <li>Address flags: A bitmask of {@code OsConstants.IFA_F_*} values representing properties
+ * of the address (e.g., {@code android.system.OsConstants.IFA_F_OPTIMISTIC}).
+ * <li>Address scope: One of the {@code OsConstants.IFA_F_*} values; defines the scope in which
+ * the address is unique (e.g.,
+ * {@code android.system.OsConstants.RT_SCOPE_LINK} or
+ * {@code android.system.OsConstants.RT_SCOPE_UNIVERSE}).
+ * </ul>
+ */
+public class LinkAddress implements Parcelable {
+    /**
+     * IPv4 or IPv6 address.
+     */
+    private InetAddress address;
+
+    /**
+     * Prefix length.
+     */
+    private int prefixLength;
+
+    /**
+     * Address flags. A bitmask of IFA_F_* values.
+     */
+    private int flags;
+
+    /**
+     * Address scope. One of the RT_SCOPE_* constants.
+     */
+    private int scope;
+
+    /**
+     * Utility function to determines the scope of a unicast address. Per RFC 4291 section 2.5 and
+     * RFC 6724 section 3.2.
+     * @hide
+     */
+    static int scopeForUnicastAddress(InetAddress addr) {
+        if (addr.isAnyLocalAddress()) {
+            return RT_SCOPE_HOST;
+        }
+
+        if (addr.isLoopbackAddress() || addr.isLinkLocalAddress()) {
+            return RT_SCOPE_LINK;
+        }
+
+        // isSiteLocalAddress() returns true for private IPv4 addresses, but RFC 6724 section 3.2
+        // says that they are assigned global scope.
+        if (!(addr instanceof Inet4Address) && addr.isSiteLocalAddress()) {
+            return RT_SCOPE_SITE;
+        }
+
+        return RT_SCOPE_UNIVERSE;
+    }
+
+    /**
+     * Utility function for the constructors.
+     */
+    private void init(InetAddress address, int prefixLength, int flags, int scope) {
+        if (address == null ||
+                address.isMulticastAddress() ||
+                prefixLength < 0 ||
+                ((address instanceof Inet4Address) && prefixLength > 32) ||
+                (prefixLength > 128)) {
+            throw new IllegalArgumentException("Bad LinkAddress params " + address +
+                    "/" + prefixLength);
+        }
+        this.address = address;
+        this.prefixLength = prefixLength;
+        this.flags = flags;
+        this.scope = scope;
+    }
+
+    /**
+     * Constructs a new {@code LinkAddress} from an {@code InetAddress} and prefix length, with
+     * the specified flags and scope. Flags and scope are not checked for validity.
+     * @param address The IP address.
+     * @param prefixLength The prefix length.
+     * @param flags A bitmask of {@code IFA_F_*} values representing properties of the address.
+     * @param scope An integer defining the scope in which the address is unique (e.g.,
+     *              {@link OsConstants#RT_SCOPE_LINK} or {@link OsConstants#RT_SCOPE_SITE}).
+     * @hide
+     */
+    public LinkAddress(InetAddress address, int prefixLength, int flags, int scope) {
+        init(address, prefixLength, flags, scope);
+    }
+
+    /**
+     * Constructs a new {@code LinkAddress} from an {@code InetAddress} and a prefix length.
+     * The flags are set to zero and the scope is determined from the address.
+     * @param address The IP address.
+     * @param prefixLength The prefix length.
+     * @hide
+     */
+    public LinkAddress(InetAddress address, int prefixLength) {
+        this(address, prefixLength, 0, 0);
+        this.scope = scopeForUnicastAddress(address);
+    }
+
+    /**
+     * Constructs a new {@code LinkAddress} from an {@code InterfaceAddress}.
+     * The flags are set to zero and the scope is determined from the address.
+     * @param interfaceAddress The interface address.
+     * @hide
+     */
+    public LinkAddress(InterfaceAddress interfaceAddress) {
+        this(interfaceAddress.getAddress(),
+             interfaceAddress.getNetworkPrefixLength());
+    }
+
+    /**
+     * Constructs a new {@code LinkAddress} from a string such as "192.0.2.5/24" or
+     * "2001:db8::1/64". The flags are set to zero and the scope is determined from the address.
+     * @param string The string to parse.
+     * @hide
+     */
+    public LinkAddress(String address) {
+        this(address, 0, 0);
+        this.scope = scopeForUnicastAddress(this.address);
+    }
+
+    /**
+     * Constructs a new {@code LinkAddress} from a string such as "192.0.2.5/24" or
+     * "2001:db8::1/64", with the specified flags and scope.
+     * @param string The string to parse.
+     * @param flags The address flags.
+     * @param scope The address scope.
+     * @hide
+     */
+    public LinkAddress(String address, int flags, int scope) {
+        InetAddress inetAddress = null;
+        int prefixLength = -1;
+        try {
+            String [] pieces = address.split("/", 2);
+            prefixLength = Integer.parseInt(pieces[1]);
+            inetAddress = InetAddress.parseNumericAddress(pieces[0]);
+        } catch (NullPointerException e) {            // Null string.
+        } catch (ArrayIndexOutOfBoundsException e) {  // No prefix length.
+        } catch (NumberFormatException e) {           // Non-numeric prefix.
+        } catch (IllegalArgumentException e) {        // Invalid IP address.
+        }
+
+        if (inetAddress == null || prefixLength == -1) {
+            throw new IllegalArgumentException("Bad LinkAddress params " + address);
+        }
+
+        init(inetAddress, prefixLength, flags, scope);
+    }
+
+    /**
+     * Returns a string representation of this address, such as "192.0.2.1/24" or "2001:db8::1/64".
+     * The string representation does not contain the flags and scope, just the address and prefix
+     * length.
+     */
+    @Override
+    public String toString() {
+        return address.getHostAddress() + "/" + prefixLength;
+    }
+
+    /**
+     * Compares this {@code LinkAddress} instance against {@code obj}. Two addresses are equal if
+     * their address, prefix length, flags and scope are equal. Thus, for example, two addresses
+     * that have the same address and prefix length are not equal if one of them is deprecated and
+     * the other is not.
+     *
+     * @param obj the object to be tested for equality.
+     * @return {@code true} if both objects are equal, {@code false} otherwise.
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof LinkAddress)) {
+            return false;
+        }
+        LinkAddress linkAddress = (LinkAddress) obj;
+        return this.address.equals(linkAddress.address) &&
+            this.prefixLength == linkAddress.prefixLength &&
+            this.flags == linkAddress.flags &&
+            this.scope == linkAddress.scope;
+    }
+
+    /**
+     * Returns a hashcode for this address.
+     */
+    @Override
+    public int hashCode() {
+        return address.hashCode() + 11 * prefixLength + 19 * flags + 43 * scope;
+    }
+
+    /**
+     * Determines whether this {@code LinkAddress} and the provided {@code LinkAddress}
+     * represent the same address. Two {@code LinkAddresses} represent the same address
+     * if they have the same IP address and prefix length, even if their properties are
+     * different.
+     *
+     * @param other the {@code LinkAddress} to compare to.
+     * @return {@code true} if both objects have the same address and prefix length, {@code false}
+     * otherwise.
+     * @hide
+     */
+    public boolean isSameAddressAs(LinkAddress other) {
+        return address.equals(other.address) && prefixLength == other.prefixLength;
+    }
+
+    /**
+     * Returns the {@link InetAddress} of this {@code LinkAddress}.
+     */
+    public InetAddress getAddress() {
+        return address;
+    }
+
+    /**
+     * Returns the prefix length of this {@code LinkAddress}.
+     */
+    public int getPrefixLength() {
+        return prefixLength;
+    }
+
+    /**
+     * Returns the prefix length of this {@code LinkAddress}.
+     * TODO: Delete all callers and remove in favour of getPrefixLength().
+     * @hide
+     */
+    public int getNetworkPrefixLength() {
+        return getPrefixLength();
+    }
+
+    /**
+     * Returns the flags of this {@code LinkAddress}.
+     */
+    public int getFlags() {
+        return flags;
+    }
+
+    /**
+     * Returns the scope of this {@code LinkAddress}.
+     */
+    public int getScope() {
+        return scope;
+    }
+
+    /**
+     * Returns true if this {@code LinkAddress} is global scope and preferred.
+     * @hide
+     */
+    public boolean isGlobalPreferred() {
+        return (scope == RT_SCOPE_UNIVERSE &&
+                (flags & (IFA_F_DADFAILED | IFA_F_DEPRECATED | IFA_F_TENTATIVE)) == 0L);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeByteArray(address.getAddress());
+        dest.writeInt(prefixLength);
+        dest.writeInt(this.flags);
+        dest.writeInt(scope);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public static final Creator<LinkAddress> CREATOR =
+        new Creator<LinkAddress>() {
+            public LinkAddress createFromParcel(Parcel in) {
+                InetAddress address = null;
+                try {
+                    address = InetAddress.getByAddress(in.createByteArray());
+                } catch (UnknownHostException e) {
+                    // Nothing we can do here. When we call the constructor, we'll throw an
+                    // IllegalArgumentException, because a LinkAddress can't have a null
+                    // InetAddress.
+                }
+                int prefixLength = in.readInt();
+                int flags = in.readInt();
+                int scope = in.readInt();
+                return new LinkAddress(address, prefixLength, flags, scope);
+            }
+
+            public LinkAddress[] newArray(int size) {
+                return new LinkAddress[size];
+            }
+        };
+}
diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
new file mode 100644
index 0000000..bb05936
--- /dev/null
+++ b/core/java/android/net/LinkProperties.java
@@ -0,0 +1,880 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.net.ProxyInfo;
+import android.os.Parcelable;
+import android.os.Parcel;
+import android.text.TextUtils;
+
+import java.net.InetAddress;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Hashtable;
+import java.util.List;
+
+/**
+ * Describes the properties of a network link.
+ *
+ * A link represents a connection to a network.
+ * It may have multiple addresses and multiple gateways,
+ * multiple dns servers but only one http proxy and one
+ * network interface.
+ *
+ * Note that this is just a holder of data.  Modifying it
+ * does not affect live networks.
+ *
+ */
+public class LinkProperties implements Parcelable {
+    // The interface described by the network link.
+    private String mIfaceName;
+    private ArrayList<LinkAddress> mLinkAddresses = new ArrayList<LinkAddress>();
+    private ArrayList<InetAddress> mDnses = new ArrayList<InetAddress>();
+    private String mDomains;
+    private ArrayList<RouteInfo> mRoutes = new ArrayList<RouteInfo>();
+    private ProxyInfo mHttpProxy;
+    private int mMtu;
+
+    // Stores the properties of links that are "stacked" above this link.
+    // Indexed by interface name to allow modification and to prevent duplicates being added.
+    private Hashtable<String, LinkProperties> mStackedLinks =
+        new Hashtable<String, LinkProperties>();
+
+    /**
+     * @hide
+     */
+    public static class CompareResult<T> {
+        public List<T> removed = new ArrayList<T>();
+        public List<T> added = new ArrayList<T>();
+
+        @Override
+        public String toString() {
+            String retVal = "removed=[";
+            for (T addr : removed) retVal += addr.toString() + ",";
+            retVal += "] added=[";
+            for (T addr : added) retVal += addr.toString() + ",";
+            retVal += "]";
+            return retVal;
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public LinkProperties() {
+    }
+
+    /**
+     * @hide
+     */
+    public LinkProperties(LinkProperties source) {
+        if (source != null) {
+            mIfaceName = source.getInterfaceName();
+            for (LinkAddress l : source.getLinkAddresses()) mLinkAddresses.add(l);
+            for (InetAddress i : source.getDnsServers()) mDnses.add(i);
+            mDomains = source.getDomains();
+            for (RouteInfo r : source.getRoutes()) mRoutes.add(r);
+            mHttpProxy = (source.getHttpProxy() == null)  ?
+                    null : new ProxyInfo(source.getHttpProxy());
+            for (LinkProperties l: source.mStackedLinks.values()) {
+                addStackedLink(l);
+            }
+            setMtu(source.getMtu());
+        }
+    }
+
+    /**
+     * Sets the interface name for this link.  All {@link RouteInfo} already set for this
+     * will have their interface changed to match this new value.
+     *
+     * @param iface The name of the network interface used for this link.
+     * @hide
+     */
+    public void setInterfaceName(String iface) {
+        mIfaceName = iface;
+        ArrayList<RouteInfo> newRoutes = new ArrayList<RouteInfo>(mRoutes.size());
+        for (RouteInfo route : mRoutes) {
+            newRoutes.add(routeWithInterface(route));
+        }
+        mRoutes = newRoutes;
+    }
+
+    /**
+     * Gets the interface name for this link.  May be {@code null} if not set.
+     *
+     * @return The interface name set for this link or {@code null}.
+     */
+    public String getInterfaceName() {
+        return mIfaceName;
+    }
+
+    /**
+     * @hide
+     */
+    public List<String> getAllInterfaceNames() {
+        List<String> interfaceNames = new ArrayList<String>(mStackedLinks.size() + 1);
+        if (mIfaceName != null) interfaceNames.add(new String(mIfaceName));
+        for (LinkProperties stacked: mStackedLinks.values()) {
+            interfaceNames.addAll(stacked.getAllInterfaceNames());
+        }
+        return interfaceNames;
+    }
+
+    /**
+     * Returns all the addresses on this link.  We often think of a link having a single address,
+     * however, particularly with Ipv6 several addresses are typical.  Note that the
+     * {@code LinkProperties} actually contains {@link LinkAddress} objects which also include
+     * prefix lengths for each address.  This is a simplified utility alternative to
+     * {@link LinkProperties#getLinkAddresses}.
+     *
+     * @return An umodifiable {@link List} of {@link InetAddress} for this link.
+     * @hide
+     */
+    public List<InetAddress> getAddresses() {
+        List<InetAddress> addresses = new ArrayList<InetAddress>();
+        for (LinkAddress linkAddress : mLinkAddresses) {
+            addresses.add(linkAddress.getAddress());
+        }
+        return Collections.unmodifiableList(addresses);
+    }
+
+    /**
+     * Returns all the addresses on this link and all the links stacked above it.
+     * @hide
+     */
+    public List<InetAddress> getAllAddresses() {
+        List<InetAddress> addresses = new ArrayList<InetAddress>();
+        for (LinkAddress linkAddress : mLinkAddresses) {
+            addresses.add(linkAddress.getAddress());
+        }
+        for (LinkProperties stacked: mStackedLinks.values()) {
+            addresses.addAll(stacked.getAllAddresses());
+        }
+        return addresses;
+    }
+
+    private int findLinkAddressIndex(LinkAddress address) {
+        for (int i = 0; i < mLinkAddresses.size(); i++) {
+            if (mLinkAddresses.get(i).isSameAddressAs(address)) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    /**
+     * Adds a {@link LinkAddress} to this {@code LinkProperties} if a {@link LinkAddress} of the
+     * same address/prefix does not already exist.  If it does exist it is replaced.
+     * @param address The {@code LinkAddress} to add.
+     * @return true if {@code address} was added or updated, false otherwise.
+     * @hide
+     */
+    public boolean addLinkAddress(LinkAddress address) {
+        if (address == null) {
+            return false;
+        }
+        int i = findLinkAddressIndex(address);
+        if (i < 0) {
+            // Address was not present. Add it.
+            mLinkAddresses.add(address);
+            return true;
+        } else if (mLinkAddresses.get(i).equals(address)) {
+            // Address was present and has same properties. Do nothing.
+            return false;
+        } else {
+            // Address was present and has different properties. Update it.
+            mLinkAddresses.set(i, address);
+            return true;
+        }
+    }
+
+    /**
+     * Removes a {@link LinkAddress} from this {@code LinkProperties}.  Specifically, matches
+     * and {@link LinkAddress} with the same address and prefix.
+     *
+     * @param toRemove A {@link LinkAddress} specifying the address to remove.
+     * @return true if the address was removed, false if it did not exist.
+     * @hide
+     */
+    public boolean removeLinkAddress(LinkAddress toRemove) {
+        int i = findLinkAddressIndex(toRemove);
+        if (i >= 0) {
+            mLinkAddresses.remove(i);
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Returns all the {@link LinkAddress} on this link.  Typically a link will have
+     * one IPv4 address and one or more IPv6 addresses.
+     *
+     * @return An unmodifiable {@link List} of {@link LinkAddress} for this link.
+     */
+    public List<LinkAddress> getLinkAddresses() {
+        return Collections.unmodifiableList(mLinkAddresses);
+    }
+
+    /**
+     * Returns all the addresses on this link and all the links stacked above it.
+     * @hide
+     */
+    public List<LinkAddress> getAllLinkAddresses() {
+        List<LinkAddress> addresses = new ArrayList<LinkAddress>();
+        addresses.addAll(mLinkAddresses);
+        for (LinkProperties stacked: mStackedLinks.values()) {
+            addresses.addAll(stacked.getAllLinkAddresses());
+        }
+        return addresses;
+    }
+
+    /**
+     * Replaces the {@link LinkAddress} in this {@code LinkProperties} with
+     * the given {@link Collection} of {@link LinkAddress}.
+     *
+     * @param addresses The {@link Collection} of {@link LinkAddress} to set in this
+     *                  object.
+     * @hide
+     */
+    public void setLinkAddresses(Collection<LinkAddress> addresses) {
+        mLinkAddresses.clear();
+        for (LinkAddress address: addresses) {
+            addLinkAddress(address);
+        }
+    }
+
+    /**
+     * Adds the given {@link InetAddress} to the list of DNS servers.
+     *
+     * @param dnsServer The {@link InetAddress} to add to the list of DNS servers.
+     * @hide
+     */
+    public void addDnsServer(InetAddress dnsServer) {
+        if (dnsServer != null) mDnses.add(dnsServer);
+    }
+
+    /**
+     * Returns all the {@link InetAddress} for DNS servers on this link.
+     *
+     * @return An umodifiable {@link List} of {@link InetAddress} for DNS servers on
+     *         this link.
+     */
+    public List<InetAddress> getDnsServers() {
+        return Collections.unmodifiableList(mDnses);
+    }
+
+    /**
+     * Sets the DNS domain search path used on this link.
+     *
+     * @param domains A {@link String} listing in priority order the comma separated
+     *                domains to search when resolving host names on this link.
+     * @hide
+     */
+    public void setDomains(String domains) {
+        mDomains = domains;
+    }
+
+    /**
+     * Get the DNS domains search path set for this link.
+     *
+     * @return A {@link String} containing the comma separated domains to search when resolving
+     *         host names on this link.
+     */
+    public String getDomains() {
+        return mDomains;
+    }
+
+    /**
+     * Sets the Maximum Transmission Unit size to use on this link.  This should not be used
+     * unless the system default (1500) is incorrect.  Values less than 68 or greater than
+     * 10000 will be ignored.
+     *
+     * @param mtu The MTU to use for this link.
+     * @hide
+     */
+    public void setMtu(int mtu) {
+        mMtu = mtu;
+    }
+
+    /**
+     * Gets any non-default MTU size set for this link.  Note that if the default is being used
+     * this will return 0.
+     *
+     * @return The mtu value set for this link.
+     * @hide
+     */
+    public int getMtu() {
+        return mMtu;
+    }
+
+    private RouteInfo routeWithInterface(RouteInfo route) {
+        return new RouteInfo(
+            route.getDestination(),
+            route.getGateway(),
+            mIfaceName);
+    }
+
+    /**
+     * Adds a {@link RouteInfo} to this {@code LinkProperties}.  If the {@link RouteInfo}
+     * had an interface name set and that differs from the interface set for this
+     * {@code LinkProperties} an {@link IllegalArgumentException} will be thrown.  The
+     * proper course is to add either un-named or properly named {@link RouteInfo}.
+     *
+     * @param route A {@link RouteInfo} to add to this object.
+     * @hide
+     */
+    public void addRoute(RouteInfo route) {
+        if (route != null) {
+            String routeIface = route.getInterface();
+            if (routeIface != null && !routeIface.equals(mIfaceName)) {
+                throw new IllegalArgumentException(
+                   "Route added with non-matching interface: " + routeIface +
+                   " vs. " + mIfaceName);
+            }
+            mRoutes.add(routeWithInterface(route));
+        }
+    }
+
+    /**
+     * Returns all the {@link RouteInfo} set on this link.
+     *
+     * @return An unmodifiable {@link List} of {@link RouteInfo} for this link.
+     */
+    public List<RouteInfo> getRoutes() {
+        return Collections.unmodifiableList(mRoutes);
+    }
+
+    /**
+     * Returns all the routes on this link and all the links stacked above it.
+     * @hide
+     */
+    public List<RouteInfo> getAllRoutes() {
+        List<RouteInfo> routes = new ArrayList();
+        routes.addAll(mRoutes);
+        for (LinkProperties stacked: mStackedLinks.values()) {
+            routes.addAll(stacked.getAllRoutes());
+        }
+        return routes;
+    }
+
+    /**
+     * Sets the recommended {@link ProxyInfo} to use on this link, or {@code null} for none.
+     * Note that Http Proxies are only a hint - the system recommends their use, but it does
+     * not enforce it and applications may ignore them.
+     *
+     * @param proxy A {@link ProxyInfo} defining the Http Proxy to use on this link.
+     * @hide
+     */
+    public void setHttpProxy(ProxyInfo proxy) {
+        mHttpProxy = proxy;
+    }
+
+    /**
+     * Gets the recommended {@link ProxyInfo} (or {@code null}) set on this link.
+     *
+     * @return The {@link ProxyInfo} set on this link
+     */
+    public ProxyInfo getHttpProxy() {
+        return mHttpProxy;
+    }
+
+    /**
+     * Adds a stacked link.
+     *
+     * If there is already a stacked link with the same interfacename as link,
+     * that link is replaced with link. Otherwise, link is added to the list
+     * of stacked links. If link is null, nothing changes.
+     *
+     * @param link The link to add.
+     * @return true if the link was stacked, false otherwise.
+     * @hide
+     */
+    public boolean addStackedLink(LinkProperties link) {
+        if (link != null && link.getInterfaceName() != null) {
+            mStackedLinks.put(link.getInterfaceName(), link);
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Removes a stacked link.
+     *
+     * If there a stacked link with the same interfacename as link, it is
+     * removed. Otherwise, nothing changes.
+     *
+     * @param link The link to remove.
+     * @return true if the link was removed, false otherwise.
+     * @hide
+     */
+    public boolean removeStackedLink(LinkProperties link) {
+        if (link != null && link.getInterfaceName() != null) {
+            LinkProperties removed = mStackedLinks.remove(link.getInterfaceName());
+            return removed != null;
+        }
+        return false;
+    }
+
+    /**
+     * Returns all the links stacked on top of this link.
+     * @hide
+     */
+    public List<LinkProperties> getStackedLinks() {
+        List<LinkProperties> stacked = new ArrayList<LinkProperties>();
+        for (LinkProperties link : mStackedLinks.values()) {
+          stacked.add(new LinkProperties(link));
+        }
+        return Collections.unmodifiableList(stacked);
+    }
+
+    /**
+     * Clears this object to its initial state.
+     * @hide
+     */
+    public void clear() {
+        mIfaceName = null;
+        mLinkAddresses.clear();
+        mDnses.clear();
+        mDomains = null;
+        mRoutes.clear();
+        mHttpProxy = null;
+        mStackedLinks.clear();
+        mMtu = 0;
+    }
+
+    /**
+     * Implement the Parcelable interface
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public String toString() {
+        String ifaceName = (mIfaceName == null ? "" : "InterfaceName: " + mIfaceName + " ");
+
+        String linkAddresses = "LinkAddresses: [";
+        for (LinkAddress addr : mLinkAddresses) linkAddresses += addr.toString() + ",";
+        linkAddresses += "] ";
+
+        String dns = "DnsAddresses: [";
+        for (InetAddress addr : mDnses) dns += addr.getHostAddress() + ",";
+        dns += "] ";
+
+        String domainName = "Domains: " + mDomains;
+
+        String mtu = " MTU: " + mMtu;
+
+        String routes = " Routes: [";
+        for (RouteInfo route : mRoutes) routes += route.toString() + ",";
+        routes += "] ";
+        String proxy = (mHttpProxy == null ? "" : " HttpProxy: " + mHttpProxy.toString() + " ");
+
+        String stacked = "";
+        if (mStackedLinks.values().size() > 0) {
+            stacked += " Stacked: [";
+            for (LinkProperties link: mStackedLinks.values()) {
+                stacked += " [" + link.toString() + " ],";
+            }
+            stacked += "] ";
+        }
+        return "{" + ifaceName + linkAddresses + routes + dns + domainName + mtu
+            + proxy + stacked + "}";
+    }
+
+    /**
+     * Returns true if this link has an IPv4 address.
+     *
+     * @return {@code true} if there is an IPv4 address, {@code false} otherwise.
+     * @hide
+     */
+    public boolean hasIPv4Address() {
+        for (LinkAddress address : mLinkAddresses) {
+          if (address.getAddress() instanceof Inet4Address) {
+            return true;
+          }
+        }
+        return false;
+    }
+
+    /**
+     * Returns true if this link has an IPv6 address.
+     *
+     * @return {@code true} if there is an IPv6 address, {@code false} otherwise.
+     * @hide
+     */
+    public boolean hasIPv6Address() {
+        for (LinkAddress address : mLinkAddresses) {
+          if (address.getAddress() instanceof Inet6Address) {
+            return true;
+          }
+        }
+        return false;
+    }
+
+    /**
+     * Compares this {@code LinkProperties} interface name against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalInterfaceName(LinkProperties target) {
+        return TextUtils.equals(getInterfaceName(), target.getInterfaceName());
+    }
+
+    /**
+     * Compares this {@code LinkProperties} interface addresses against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalAddresses(LinkProperties target) {
+        Collection<InetAddress> targetAddresses = target.getAddresses();
+        Collection<InetAddress> sourceAddresses = getAddresses();
+        return (sourceAddresses.size() == targetAddresses.size()) ?
+                    sourceAddresses.containsAll(targetAddresses) : false;
+    }
+
+    /**
+     * Compares this {@code LinkProperties} DNS addresses against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalDnses(LinkProperties target) {
+        Collection<InetAddress> targetDnses = target.getDnsServers();
+        String targetDomains = target.getDomains();
+        if (mDomains == null) {
+            if (targetDomains != null) return false;
+        } else {
+            if (mDomains.equals(targetDomains) == false) return false;
+        }
+        return (mDnses.size() == targetDnses.size()) ?
+                    mDnses.containsAll(targetDnses) : false;
+    }
+
+    /**
+     * Compares this {@code LinkProperties} Routes against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalRoutes(LinkProperties target) {
+        Collection<RouteInfo> targetRoutes = target.getRoutes();
+        return (mRoutes.size() == targetRoutes.size()) ?
+                    mRoutes.containsAll(targetRoutes) : false;
+    }
+
+    /**
+     * Compares this {@code LinkProperties} HttpProxy against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalHttpProxy(LinkProperties target) {
+        return getHttpProxy() == null ? target.getHttpProxy() == null :
+                    getHttpProxy().equals(target.getHttpProxy());
+    }
+
+    /**
+     * Compares this {@code LinkProperties} stacked links against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalStackedLinks(LinkProperties target) {
+        if (!mStackedLinks.keySet().equals(target.mStackedLinks.keySet())) {
+            return false;
+        }
+        for (LinkProperties stacked : mStackedLinks.values()) {
+            // Hashtable values can never be null.
+            String iface = stacked.getInterfaceName();
+            if (!stacked.equals(target.mStackedLinks.get(iface))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Compares this {@code LinkProperties} MTU against the target
+     *
+     * @param target LinkProperties to compare.
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @hide
+     */
+    public boolean isIdenticalMtu(LinkProperties target) {
+        return getMtu() == target.getMtu();
+    }
+
+    @Override
+    /**
+     * Compares this {@code LinkProperties} instance against the target
+     * LinkProperties in {@code obj}. Two LinkPropertieses are equal if
+     * all their fields are equal in values.
+     *
+     * For collection fields, such as mDnses, containsAll() is used to check
+     * if two collections contains the same elements, independent of order.
+     * There are two thoughts regarding containsAll()
+     * 1. Duplicated elements. eg, (A, B, B) and (A, A, B) are equal.
+     * 2. Worst case performance is O(n^2).
+     *
+     * @param obj the object to be tested for equality.
+     * @return {@code true} if both objects are equal, {@code false} otherwise.
+     */
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+
+        if (!(obj instanceof LinkProperties)) return false;
+
+        LinkProperties target = (LinkProperties) obj;
+        /**
+         * This method does not check that stacked interfaces are equal, because
+         * stacked interfaces are not so much a property of the link as a
+         * description of connections between links.
+         */
+        return isIdenticalInterfaceName(target) &&
+                isIdenticalAddresses(target) &&
+                isIdenticalDnses(target) &&
+                isIdenticalRoutes(target) &&
+                isIdenticalHttpProxy(target) &&
+                isIdenticalStackedLinks(target) &&
+                isIdenticalMtu(target);
+    }
+
+    /**
+     * Compares the addresses in this LinkProperties with another
+     * LinkProperties, examining only addresses on the base link.
+     *
+     * @param target a LinkProperties with the new list of addresses
+     * @return the differences between the addresses.
+     * @hide
+     */
+    public CompareResult<LinkAddress> compareAddresses(LinkProperties target) {
+        /*
+         * Duplicate the LinkAddresses into removed, we will be removing
+         * address which are common between mLinkAddresses and target
+         * leaving the addresses that are different. And address which
+         * are in target but not in mLinkAddresses are placed in the
+         * addedAddresses.
+         */
+        CompareResult<LinkAddress> result = new CompareResult<LinkAddress>();
+        result.removed = new ArrayList<LinkAddress>(mLinkAddresses);
+        result.added.clear();
+        if (target != null) {
+            for (LinkAddress newAddress : target.getLinkAddresses()) {
+                if (! result.removed.remove(newAddress)) {
+                    result.added.add(newAddress);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Compares the DNS addresses in this LinkProperties with another
+     * LinkProperties, examining only DNS addresses on the base link.
+     *
+     * @param target a LinkProperties with the new list of dns addresses
+     * @return the differences between the DNS addresses.
+     * @hide
+     */
+    public CompareResult<InetAddress> compareDnses(LinkProperties target) {
+        /*
+         * Duplicate the InetAddresses into removed, we will be removing
+         * dns address which are common between mDnses and target
+         * leaving the addresses that are different. And dns address which
+         * are in target but not in mDnses are placed in the
+         * addedAddresses.
+         */
+        CompareResult<InetAddress> result = new CompareResult<InetAddress>();
+
+        result.removed = new ArrayList<InetAddress>(mDnses);
+        result.added.clear();
+        if (target != null) {
+            for (InetAddress newAddress : target.getDnsServers()) {
+                if (! result.removed.remove(newAddress)) {
+                    result.added.add(newAddress);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Compares all routes in this LinkProperties with another LinkProperties,
+     * examining both the the base link and all stacked links.
+     *
+     * @param target a LinkProperties with the new list of routes
+     * @return the differences between the routes.
+     * @hide
+     */
+    public CompareResult<RouteInfo> compareAllRoutes(LinkProperties target) {
+        /*
+         * Duplicate the RouteInfos into removed, we will be removing
+         * routes which are common between mRoutes and target
+         * leaving the routes that are different. And route address which
+         * are in target but not in mRoutes are placed in added.
+         */
+        CompareResult<RouteInfo> result = new CompareResult<RouteInfo>();
+
+        result.removed = getAllRoutes();
+        result.added.clear();
+        if (target != null) {
+            for (RouteInfo r : target.getAllRoutes()) {
+                if (! result.removed.remove(r)) {
+                    result.added.add(r);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Compares all interface names in this LinkProperties with another
+     * LinkProperties, examining both the the base link and all stacked links.
+     *
+     * @param target a LinkProperties with the new list of interface names
+     * @return the differences between the interface names.
+     * @hide
+     */
+    public CompareResult<String> compareAllInterfaceNames(LinkProperties target) {
+        /*
+         * Duplicate the interface names into removed, we will be removing
+         * interface names which are common between this and target
+         * leaving the interface names that are different. And interface names which
+         * are in target but not in this are placed in added.
+         */
+        CompareResult<String> result = new CompareResult<String>();
+
+        result.removed = getAllInterfaceNames();
+        result.added.clear();
+        if (target != null) {
+            for (String r : target.getAllInterfaceNames()) {
+                if (! result.removed.remove(r)) {
+                    result.added.add(r);
+                }
+            }
+        }
+        return result;
+    }
+
+
+    @Override
+    /**
+     * generate hashcode based on significant fields
+     * Equal objects must produce the same hash code, while unequal objects
+     * may have the same hash codes.
+     */
+    public int hashCode() {
+        return ((null == mIfaceName) ? 0 : mIfaceName.hashCode()
+                + mLinkAddresses.size() * 31
+                + mDnses.size() * 37
+                + ((null == mDomains) ? 0 : mDomains.hashCode())
+                + mRoutes.size() * 41
+                + ((null == mHttpProxy) ? 0 : mHttpProxy.hashCode())
+                + mStackedLinks.hashCode() * 47)
+                + mMtu * 51;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(getInterfaceName());
+        dest.writeInt(mLinkAddresses.size());
+        for(LinkAddress linkAddress : mLinkAddresses) {
+            dest.writeParcelable(linkAddress, flags);
+        }
+
+        dest.writeInt(mDnses.size());
+        for(InetAddress d : mDnses) {
+            dest.writeByteArray(d.getAddress());
+        }
+        dest.writeString(mDomains);
+        dest.writeInt(mMtu);
+        dest.writeInt(mRoutes.size());
+        for(RouteInfo route : mRoutes) {
+            dest.writeParcelable(route, flags);
+        }
+
+        if (mHttpProxy != null) {
+            dest.writeByte((byte)1);
+            dest.writeParcelable(mHttpProxy, flags);
+        } else {
+            dest.writeByte((byte)0);
+        }
+        ArrayList<LinkProperties> stackedLinks = new ArrayList(mStackedLinks.values());
+        dest.writeList(stackedLinks);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     */
+    public static final Creator<LinkProperties> CREATOR =
+        new Creator<LinkProperties>() {
+            public LinkProperties createFromParcel(Parcel in) {
+                LinkProperties netProp = new LinkProperties();
+
+                String iface = in.readString();
+                if (iface != null) {
+                    netProp.setInterfaceName(iface);
+                }
+                int addressCount = in.readInt();
+                for (int i=0; i<addressCount; i++) {
+                    netProp.addLinkAddress((LinkAddress)in.readParcelable(null));
+                }
+                addressCount = in.readInt();
+                for (int i=0; i<addressCount; i++) {
+                    try {
+                        netProp.addDnsServer(InetAddress.getByAddress(in.createByteArray()));
+                    } catch (UnknownHostException e) { }
+                }
+                netProp.setDomains(in.readString());
+                netProp.setMtu(in.readInt());
+                addressCount = in.readInt();
+                for (int i=0; i<addressCount; i++) {
+                    netProp.addRoute((RouteInfo)in.readParcelable(null));
+                }
+                if (in.readByte() == 1) {
+                    netProp.setHttpProxy((ProxyInfo)in.readParcelable(null));
+                }
+                ArrayList<LinkProperties> stackedLinks = new ArrayList<LinkProperties>();
+                in.readList(stackedLinks, LinkProperties.class.getClassLoader());
+                for (LinkProperties stackedLink: stackedLinks) {
+                    netProp.addStackedLink(stackedLink);
+                }
+                return netProp;
+            }
+
+            public LinkProperties[] newArray(int size) {
+                return new LinkProperties[size];
+            }
+        };
+}
diff --git a/core/java/android/net/Network.java b/core/java/android/net/Network.java
new file mode 100644
index 0000000..d933f26
--- /dev/null
+++ b/core/java/android/net/Network.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.net.NetworkUtils;
+import android.os.Parcelable;
+import android.os.Parcel;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import javax.net.SocketFactory;
+
+/**
+ * Identifies a {@code Network}.  This is supplied to applications via
+ * {@link ConnectivityManager.NetworkCallbackListener} in response to
+ * {@link ConnectivityManager#requestNetwork} or {@link ConnectivityManager#listenForNetwork}.
+ * It is used to direct traffic to the given {@code Network}, either on a {@link Socket} basis
+ * through a targeted {@link SocketFactory} or process-wide via
+ * {@link ConnectivityManager#setProcessDefaultNetwork}.
+ */
+public class Network implements Parcelable {
+
+    /**
+     * @hide
+     */
+    public final int netId;
+
+    private NetworkBoundSocketFactory mNetworkBoundSocketFactory = null;
+
+    /**
+     * @hide
+     */
+    public Network(int netId) {
+        this.netId = netId;
+    }
+
+    /**
+     * @hide
+     */
+    public Network(Network that) {
+        this.netId = that.netId;
+    }
+
+    /**
+     * Operates the same as {@code InetAddress.getAllByName} except that host
+     * resolution is done on this network.
+     *
+     * @param host the hostname or literal IP string to be resolved.
+     * @return the array of addresses associated with the specified host.
+     * @throws UnknownHostException if the address lookup fails.
+     */
+    public InetAddress[] getAllByName(String host) throws UnknownHostException {
+        return InetAddress.getAllByNameOnNet(host, netId);
+    }
+
+    /**
+     * Operates the same as {@code InetAddress.getByName} except that host
+     * resolution is done on this network.
+     *
+     * @param host
+     *            the hostName to be resolved to an address or {@code null}.
+     * @return the {@code InetAddress} instance representing the host.
+     * @throws UnknownHostException
+     *             if the address lookup fails.
+     */
+    public InetAddress getByName(String host) throws UnknownHostException {
+        return InetAddress.getByNameOnNet(host, netId);
+    }
+
+    /**
+     * A {@code SocketFactory} that produces {@code Socket}'s bound to this network.
+     */
+    private class NetworkBoundSocketFactory extends SocketFactory {
+        private final int mNetId;
+
+        public NetworkBoundSocketFactory(int netId) {
+            super();
+            mNetId = netId;
+        }
+
+        private void connectToHost(Socket socket, String host, int port) throws IOException {
+            // Lookup addresses only on this Network.
+            InetAddress[] hostAddresses = getAllByName(host);
+            // Try all but last address ignoring exceptions.
+            for (int i = 0; i < hostAddresses.length - 1; i++) {
+                try {
+                    socket.connect(new InetSocketAddress(hostAddresses[i], port));
+                    return;
+                } catch (IOException e) {
+                }
+            }
+            // Try last address.  Do throw exceptions.
+            socket.connect(new InetSocketAddress(hostAddresses[hostAddresses.length - 1], port));
+        }
+
+        @Override
+        public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException {
+            Socket socket = createSocket();
+            socket.bind(new InetSocketAddress(localHost, localPort));
+            connectToHost(socket, host, port);
+            return socket;
+        }
+
+        @Override
+        public Socket createSocket(InetAddress address, int port, InetAddress localAddress,
+                int localPort) throws IOException {
+            Socket socket = createSocket();
+            socket.bind(new InetSocketAddress(localAddress, localPort));
+            socket.connect(new InetSocketAddress(address, port));
+            return socket;
+        }
+
+        @Override
+        public Socket createSocket(InetAddress host, int port) throws IOException {
+            Socket socket = createSocket();
+            socket.connect(new InetSocketAddress(host, port));
+            return socket;
+        }
+
+        @Override
+        public Socket createSocket(String host, int port) throws IOException {
+            Socket socket = createSocket();
+            connectToHost(socket, host, port);
+            return socket;
+        }
+
+        @Override
+        public Socket createSocket() throws IOException {
+            Socket socket = new Socket();
+            // Query a property of the underlying socket to ensure the underlying
+            // socket exists so a file descriptor is available to bind to a network.
+            socket.getReuseAddress();
+            NetworkUtils.bindSocketToNetwork(socket.getFileDescriptor$().getInt$(), mNetId);
+            return socket;
+        }
+    }
+
+    /**
+     * Returns a {@link SocketFactory} bound to this network.  Any {@link Socket} created by
+     * this factory will have its traffic sent over this {@code Network}.  Note that if this
+     * {@code Network} ever disconnects, this factory and any {@link Socket} it produced in the
+     * past or future will cease to work.
+     *
+     * @return a {@link SocketFactory} which produces {@link Socket} instances bound to this
+     *         {@code Network}.
+     */
+    public SocketFactory getSocketFactory() {
+        if (mNetworkBoundSocketFactory == null) {
+            mNetworkBoundSocketFactory = new NetworkBoundSocketFactory(netId);
+        }
+        return mNetworkBoundSocketFactory;
+    }
+
+    // implement the Parcelable interface
+    public int describeContents() {
+        return 0;
+    }
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(netId);
+    }
+
+    public static final Creator<Network> CREATOR =
+        new Creator<Network>() {
+            public Network createFromParcel(Parcel in) {
+                int netId = in.readInt();
+
+                return new Network(netId);
+            }
+
+            public Network[] newArray(int size) {
+                return new Network[size];
+            }
+    };
+
+    public boolean equals(Object obj) {
+        if (obj instanceof Network == false) return false;
+        Network other = (Network)obj;
+        return this.netId == other.netId;
+    }
+
+    public int hashCode() {
+        return netId * 11;
+    }
+}
diff --git a/core/java/android/net/NetworkAgent.java b/core/java/android/net/NetworkAgent.java
new file mode 100644
index 0000000..3d0874b
--- /dev/null
+++ b/core/java/android/net/NetworkAgent.java
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Log;
+
+import com.android.internal.util.AsyncChannel;
+import com.android.internal.util.Protocol;
+
+import java.util.ArrayList;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/**
+ * A Utility class for handling for communicating between bearer-specific
+ * code and ConnectivityService.
+ *
+ * A bearer may have more than one NetworkAgent if it can simultaneously
+ * support separate networks (IMS / Internet / MMS Apns on cellular, or
+ * perhaps connections with different SSID or P2P for Wi-Fi).
+ *
+ * @hide
+ */
+public abstract class NetworkAgent extends Handler {
+    private volatile AsyncChannel mAsyncChannel;
+    private final String LOG_TAG;
+    private static final boolean DBG = true;
+    private static final boolean VDBG = true;
+    private final Context mContext;
+    private final ArrayList<Message>mPreConnectedQueue = new ArrayList<Message>();
+
+    private static final int BASE = Protocol.BASE_NETWORK_AGENT;
+
+    /**
+     * Sent by ConnectivityService to the NetworkAgent to inform it of
+     * suspected connectivity problems on its network.  The NetworkAgent
+     * should take steps to verify and correct connectivity.
+     */
+    public static final int CMD_SUSPECT_BAD = BASE;
+
+    /**
+     * Sent by the NetworkAgent (note the EVENT vs CMD prefix) to
+     * ConnectivityService to pass the current NetworkInfo (connection state).
+     * Sent when the NetworkInfo changes, mainly due to change of state.
+     * obj = NetworkInfo
+     */
+    public static final int EVENT_NETWORK_INFO_CHANGED = BASE + 1;
+
+    /**
+     * Sent by the NetworkAgent to ConnectivityService to pass the current
+     * NetworkCapabilties.
+     * obj = NetworkCapabilities
+     */
+    public static final int EVENT_NETWORK_CAPABILITIES_CHANGED = BASE + 2;
+
+    /**
+     * Sent by the NetworkAgent to ConnectivityService to pass the current
+     * NetworkProperties.
+     * obj = NetworkProperties
+     */
+    public static final int EVENT_NETWORK_PROPERTIES_CHANGED = BASE + 3;
+
+    /* centralize place where base network score, and network score scaling, will be
+     * stored, so as we can consistently compare apple and oranges, or wifi, ethernet and LTE
+     */
+    public static final int WIFI_BASE_SCORE = 60;
+
+    /**
+     * Sent by the NetworkAgent to ConnectivityService to pass the current
+     * network score.
+     * obj = network score Integer
+     */
+    public static final int EVENT_NETWORK_SCORE_CHANGED = BASE + 4;
+
+    public NetworkAgent(Looper looper, Context context, String logTag, NetworkInfo ni,
+            NetworkCapabilities nc, LinkProperties lp, int score) {
+        super(looper);
+        LOG_TAG = logTag;
+        mContext = context;
+        if (ni == null || nc == null || lp == null) {
+            throw new IllegalArgumentException();
+        }
+
+        if (DBG) log("Registering NetworkAgent");
+        ConnectivityManager cm = (ConnectivityManager)mContext.getSystemService(
+                Context.CONNECTIVITY_SERVICE);
+        cm.registerNetworkAgent(new Messenger(this), new NetworkInfo(ni),
+                new LinkProperties(lp), new NetworkCapabilities(nc), score);
+    }
+
+    @Override
+    public void handleMessage(Message msg) {
+        switch (msg.what) {
+            case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: {
+                if (mAsyncChannel != null) {
+                    log("Received new connection while already connected!");
+                } else {
+                    if (DBG) log("NetworkAgent fully connected");
+                    AsyncChannel ac = new AsyncChannel();
+                    ac.connected(null, this, msg.replyTo);
+                    ac.replyToMessage(msg, AsyncChannel.CMD_CHANNEL_FULLY_CONNECTED,
+                            AsyncChannel.STATUS_SUCCESSFUL);
+                    synchronized (mPreConnectedQueue) {
+                        mAsyncChannel = ac;
+                        for (Message m : mPreConnectedQueue) {
+                            ac.sendMessage(m);
+                        }
+                        mPreConnectedQueue.clear();
+                    }
+                }
+                break;
+            }
+            case AsyncChannel.CMD_CHANNEL_DISCONNECT: {
+                if (DBG) log("CMD_CHANNEL_DISCONNECT");
+                if (mAsyncChannel != null) mAsyncChannel.disconnect();
+                break;
+            }
+            case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
+                if (DBG) log("NetworkAgent channel lost");
+                // let the client know CS is done with us.
+                unwanted();
+                synchronized (mPreConnectedQueue) {
+                    mAsyncChannel = null;
+                }
+                break;
+            }
+            case CMD_SUSPECT_BAD: {
+                log("Unhandled Message " + msg);
+                break;
+            }
+        }
+    }
+
+    private void queueOrSendMessage(int what, Object obj) {
+        synchronized (mPreConnectedQueue) {
+            if (mAsyncChannel != null) {
+                mAsyncChannel.sendMessage(what, obj);
+            } else {
+                Message msg = Message.obtain();
+                msg.what = what;
+                msg.obj = obj;
+                mPreConnectedQueue.add(msg);
+            }
+        }
+    }
+
+    /**
+     * Called by the bearer code when it has new LinkProperties data.
+     */
+    public void sendLinkProperties(LinkProperties linkProperties) {
+        queueOrSendMessage(EVENT_NETWORK_PROPERTIES_CHANGED, new LinkProperties(linkProperties));
+    }
+
+    /**
+     * Called by the bearer code when it has new NetworkInfo data.
+     */
+    public void sendNetworkInfo(NetworkInfo networkInfo) {
+        queueOrSendMessage(EVENT_NETWORK_INFO_CHANGED, new NetworkInfo(networkInfo));
+    }
+
+    /**
+     * Called by the bearer code when it has new NetworkCapabilities data.
+     */
+    public void sendNetworkCapabilities(NetworkCapabilities networkCapabilities) {
+        queueOrSendMessage(EVENT_NETWORK_CAPABILITIES_CHANGED,
+                new NetworkCapabilities(networkCapabilities));
+    }
+
+    /**
+     * Called by the bearer code when it has a new score for this network.
+     */
+    public void sendNetworkScore(int score) {
+        queueOrSendMessage(EVENT_NETWORK_SCORE_CHANGED, new Integer(score));
+    }
+
+    /**
+     * Called when ConnectivityService has indicated they no longer want this network.
+     * The parent factory should (previously) have received indication of the change
+     * as well, either canceling NetworkRequests or altering their score such that this
+     * network won't be immediately requested again.
+     */
+    abstract protected void unwanted();
+
+    protected void log(String s) {
+        Log.d(LOG_TAG, "NetworkAgent: " + s);
+    }
+}
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
new file mode 100644
index 0000000..fe96287
--- /dev/null
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -0,0 +1,526 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Log;
+
+import java.lang.IllegalArgumentException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
+/**
+ * This class represents the capabilities of a network.  This is used both to specify
+ * needs to {@link ConnectivityManager} and when inspecting a network.
+ *
+ * Note that this replaces the old {@link ConnectivityManager#TYPE_MOBILE} method
+ * of network selection.  Rather than indicate a need for Wi-Fi because an application
+ * needs high bandwidth and risk obselence when a new, fast network appears (like LTE),
+ * the application should specify it needs high bandwidth.  Similarly if an application
+ * needs an unmetered network for a bulk transfer it can specify that rather than assuming
+ * all cellular based connections are metered and all Wi-Fi based connections are not.
+ */
+public final class NetworkCapabilities implements Parcelable {
+    private static final String TAG = "NetworkCapabilities";
+    private static final boolean DBG = false;
+
+    /**
+     * @hide
+     */
+    public NetworkCapabilities() {
+    }
+
+    public NetworkCapabilities(NetworkCapabilities nc) {
+        if (nc != null) {
+            mNetworkCapabilities = nc.mNetworkCapabilities;
+            mTransportTypes = nc.mTransportTypes;
+            mLinkUpBandwidthKbps = nc.mLinkUpBandwidthKbps;
+            mLinkDownBandwidthKbps = nc.mLinkDownBandwidthKbps;
+        }
+    }
+
+    /**
+     * Represents the network's capabilities.  If any are specified they will be satisfied
+     * by any Network that matches all of them.
+     */
+    private long mNetworkCapabilities = (1 << NET_CAPABILITY_NOT_RESTRICTED);
+
+    /**
+     * Indicates this is a network that has the ability to reach the
+     * carrier's MMSC for sending and receiving MMS messages.
+     */
+    public static final int NET_CAPABILITY_MMS            = 0;
+
+    /**
+     * Indicates this is a network that has the ability to reach the carrier's
+     * SUPL server, used to retrieve GPS information.
+     */
+    public static final int NET_CAPABILITY_SUPL           = 1;
+
+    /**
+     * Indicates this is a network that has the ability to reach the carrier's
+     * DUN or tethering gateway.
+     */
+    public static final int NET_CAPABILITY_DUN            = 2;
+
+    /**
+     * Indicates this is a network that has the ability to reach the carrier's
+     * FOTA portal, used for over the air updates.
+     */
+    public static final int NET_CAPABILITY_FOTA           = 3;
+
+    /**
+     * Indicates this is a network that has the ability to reach the carrier's
+     * IMS servers, used for network registration and signaling.
+     */
+    public static final int NET_CAPABILITY_IMS            = 4;
+
+    /**
+     * Indicates this is a network that has the ability to reach the carrier's
+     * CBS servers, used for carrier specific services.
+     */
+    public static final int NET_CAPABILITY_CBS            = 5;
+
+    /**
+     * Indicates this is a network that has the ability to reach a Wi-Fi direct
+     * peer.
+     */
+    public static final int NET_CAPABILITY_WIFI_P2P       = 6;
+
+    /**
+     * Indicates this is a network that has the ability to reach a carrier's
+     * Initial Attach servers.
+     */
+    public static final int NET_CAPABILITY_IA             = 7;
+
+    /**
+     * Indicates this is a network that has the ability to reach a carrier's
+     * RCS servers, used for Rich Communication Services.
+     */
+    public static final int NET_CAPABILITY_RCS            = 8;
+
+    /**
+     * Indicates this is a network that has the ability to reach a carrier's
+     * XCAP servers, used for configuration and control.
+     */
+    public static final int NET_CAPABILITY_XCAP           = 9;
+
+    /**
+     * Indicates this is a network that has the ability to reach a carrier's
+     * Emergency IMS servers, used for network signaling during emergency calls.
+     */
+    public static final int NET_CAPABILITY_EIMS           = 10;
+
+    /**
+     * Indicates that this network is unmetered.
+     */
+    public static final int NET_CAPABILITY_NOT_METERED    = 11;
+
+    /**
+     * Indicates that this network should be able to reach the internet.
+     */
+    public static final int NET_CAPABILITY_INTERNET       = 12;
+
+    /**
+     * Indicates that this network is available for general use.  If this is not set
+     * applications should not attempt to communicate on this network.  Note that this
+     * is simply informative and not enforcement - enforcement is handled via other means.
+     * Set by default.
+     */
+    public static final int NET_CAPABILITY_NOT_RESTRICTED = 13;
+
+    private static final int MIN_NET_CAPABILITY = NET_CAPABILITY_MMS;
+    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_NOT_RESTRICTED;
+
+    /**
+     * Adds the given capability to this {@code NetworkCapability} instance.
+     * Multiple capabilities may be applied sequentially.  Note that when searching
+     * for a network to satisfy a request, all capabilities requested must be satisfied.
+     *
+     * @param capability the {@code NetworkCapabilities.NET_CAPABILITY_*} to be added.
+     * @return This NetworkCapability to facilitate chaining.
+     * @hide
+     */
+    public NetworkCapabilities addCapability(int capability) {
+        if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
+            throw new IllegalArgumentException("NetworkCapability out of range");
+        }
+        mNetworkCapabilities |= 1 << capability;
+        return this;
+    }
+
+    /**
+     * Removes (if found) the given capability from this {@code NetworkCapability} instance.
+     *
+     * @param capability the {@code NetworkCapabilities.NET_CAPABILTIY_*} to be removed.
+     * @return This NetworkCapability to facilitate chaining.
+     * @hide
+     */
+    public NetworkCapabilities removeCapability(int capability) {
+        if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
+            throw new IllegalArgumentException("NetworkCapability out of range");
+        }
+        mNetworkCapabilities &= ~(1 << capability);
+        return this;
+    }
+
+    /**
+     * Gets all the capabilities set on this {@code NetworkCapability} instance.
+     *
+     * @return an array of {@code NetworkCapabilities.NET_CAPABILITY_*} values
+     *         for this instance.
+     * @hide
+     */
+    public int[] getCapabilities() {
+        return enumerateBits(mNetworkCapabilities);
+    }
+
+    /**
+     * Tests for the presence of a capabilitity on this instance.
+     *
+     * @param capability the {@code NetworkCapabilities.NET_CAPABILITY_*} to be tested for.
+     * @return {@code true} if set on this instance.
+     */
+    public boolean hasCapability(int capability) {
+        if (capability < MIN_NET_CAPABILITY || capability > MAX_NET_CAPABILITY) {
+            return false;
+        }
+        return ((mNetworkCapabilities & (1 << capability)) != 0);
+    }
+
+    private int[] enumerateBits(long val) {
+        int size = Long.bitCount(val);
+        int[] result = new int[size];
+        int index = 0;
+        int resource = 0;
+        while (val > 0) {
+            if ((val & 1) == 1) result[index++] = resource;
+            val = val >> 1;
+            resource++;
+        }
+        return result;
+    }
+
+    private void combineNetCapabilities(NetworkCapabilities nc) {
+        this.mNetworkCapabilities |= nc.mNetworkCapabilities;
+    }
+
+    private boolean satisfiedByNetCapabilities(NetworkCapabilities nc) {
+        return ((nc.mNetworkCapabilities & this.mNetworkCapabilities) == this.mNetworkCapabilities);
+    }
+
+    private boolean equalsNetCapabilities(NetworkCapabilities nc) {
+        return (nc.mNetworkCapabilities == this.mNetworkCapabilities);
+    }
+
+    /**
+     * Representing the transport type.  Apps should generally not care about transport.  A
+     * request for a fast internet connection could be satisfied by a number of different
+     * transports.  If any are specified here it will be satisfied a Network that matches
+     * any of them.  If a caller doesn't care about the transport it should not specify any.
+     */
+    private long mTransportTypes;
+
+    /**
+     * Indicates this network uses a Cellular transport.
+     */
+    public static final int TRANSPORT_CELLULAR = 0;
+
+    /**
+     * Indicates this network uses a Wi-Fi transport.
+     */
+    public static final int TRANSPORT_WIFI = 1;
+
+    /**
+     * Indicates this network uses a Bluetooth transport.
+     */
+    public static final int TRANSPORT_BLUETOOTH = 2;
+
+    /**
+     * Indicates this network uses an Ethernet transport.
+     */
+    public static final int TRANSPORT_ETHERNET = 3;
+
+    private static final int MIN_TRANSPORT = TRANSPORT_CELLULAR;
+    private static final int MAX_TRANSPORT = TRANSPORT_ETHERNET;
+
+    /**
+     * Adds the given transport type to this {@code NetworkCapability} instance.
+     * Multiple transports may be applied sequentially.  Note that when searching
+     * for a network to satisfy a request, any listed in the request will satisfy the request.
+     * For example {@code TRANSPORT_WIFI} and {@code TRANSPORT_ETHERNET} added to a
+     * {@code NetworkCapabilities} would cause either a Wi-Fi network or an Ethernet network
+     * to be selected.  This is logically different than
+     * {@code NetworkCapabilities.NET_CAPABILITY_*} listed above.
+     *
+     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be added.
+     * @return This NetworkCapability to facilitate chaining.
+     * @hide
+     */
+    public NetworkCapabilities addTransportType(int transportType) {
+        if (transportType < MIN_TRANSPORT || transportType > MAX_TRANSPORT) {
+            throw new IllegalArgumentException("TransportType out of range");
+        }
+        mTransportTypes |= 1 << transportType;
+        return this;
+    }
+
+    /**
+     * Removes (if found) the given transport from this {@code NetworkCapability} instance.
+     *
+     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be removed.
+     * @return This NetworkCapability to facilitate chaining.
+     * @hide
+     */
+    public NetworkCapabilities removeTransportType(int transportType) {
+        if (transportType < MIN_TRANSPORT || transportType > MAX_TRANSPORT) {
+            throw new IllegalArgumentException("TransportType out of range");
+        }
+        mTransportTypes &= ~(1 << transportType);
+        return this;
+    }
+
+    /**
+     * Gets all the transports set on this {@code NetworkCapability} instance.
+     *
+     * @return an array of {@code NetworkCapabilities.TRANSPORT_*} values
+     *         for this instance.
+     * @hide
+     */
+    public int[] getTransportTypes() {
+        return enumerateBits(mTransportTypes);
+    }
+
+    /**
+     * Tests for the presence of a transport on this instance.
+     *
+     * @param transportType the {@code NetworkCapabilities.TRANSPORT_*} to be tested for.
+     * @return {@code true} if set on this instance.
+     */
+    public boolean hasTransport(int transportType) {
+        if (transportType < MIN_TRANSPORT || transportType > MAX_TRANSPORT) {
+            return false;
+        }
+        return ((mTransportTypes & (1 << transportType)) != 0);
+    }
+
+    private void combineTransportTypes(NetworkCapabilities nc) {
+        this.mTransportTypes |= nc.mTransportTypes;
+    }
+    private boolean satisfiedByTransportTypes(NetworkCapabilities nc) {
+        return ((this.mTransportTypes == 0) ||
+                ((this.mTransportTypes & nc.mTransportTypes) != 0));
+    }
+    private boolean equalsTransportTypes(NetworkCapabilities nc) {
+        return (nc.mTransportTypes == this.mTransportTypes);
+    }
+
+    /**
+     * Passive link bandwidth.  This is a rough guide of the expected peak bandwidth
+     * for the first hop on the given transport.  It is not measured, but may take into account
+     * link parameters (Radio technology, allocated channels, etc).
+     */
+    private int mLinkUpBandwidthKbps;
+    private int mLinkDownBandwidthKbps;
+
+    /**
+     * Sets the upstream bandwidth for this network in Kbps.  This always only refers to
+     * the estimated first hop transport bandwidth.
+     * <p>
+     * Note that when used to request a network, this specifies the minimum acceptable.
+     * When received as the state of an existing network this specifies the typical
+     * first hop bandwidth expected.  This is never measured, but rather is inferred
+     * from technology type and other link parameters.  It could be used to differentiate
+     * between very slow 1xRTT cellular links and other faster networks or even between
+     * 802.11b vs 802.11AC wifi technologies.  It should not be used to differentiate between
+     * fast backhauls and slow backhauls.
+     *
+     * @param upKbps the estimated first hop upstream (device to network) bandwidth.
+     * @hide
+     */
+    public void setLinkUpstreamBandwidthKbps(int upKbps) {
+        mLinkUpBandwidthKbps = upKbps;
+    }
+
+    /**
+     * Retrieves the upstream bandwidth for this network in Kbps.  This always only refers to
+     * the estimated first hop transport bandwidth.
+     *
+     * @return The estimated first hop upstream (device to network) bandwidth.
+     */
+    public int getLinkUpstreamBandwidthKbps() {
+        return mLinkUpBandwidthKbps;
+    }
+
+    /**
+     * Sets the downstream bandwidth for this network in Kbps.  This always only refers to
+     * the estimated first hop transport bandwidth.
+     * <p>
+     * Note that when used to request a network, this specifies the minimum acceptable.
+     * When received as the state of an existing network this specifies the typical
+     * first hop bandwidth expected.  This is never measured, but rather is inferred
+     * from technology type and other link parameters.  It could be used to differentiate
+     * between very slow 1xRTT cellular links and other faster networks or even between
+     * 802.11b vs 802.11AC wifi technologies.  It should not be used to differentiate between
+     * fast backhauls and slow backhauls.
+     *
+     * @param downKbps the estimated first hop downstream (network to device) bandwidth.
+     * @hide
+     */
+    public void setLinkDownstreamBandwidthKbps(int downKbps) {
+        mLinkDownBandwidthKbps = downKbps;
+    }
+
+    /**
+     * Retrieves the downstream bandwidth for this network in Kbps.  This always only refers to
+     * the estimated first hop transport bandwidth.
+     *
+     * @return The estimated first hop downstream (network to device) bandwidth.
+     */
+    public int getLinkDownstreamBandwidthKbps() {
+        return mLinkDownBandwidthKbps;
+    }
+
+    private void combineLinkBandwidths(NetworkCapabilities nc) {
+        this.mLinkUpBandwidthKbps =
+                Math.max(this.mLinkUpBandwidthKbps, nc.mLinkUpBandwidthKbps);
+        this.mLinkDownBandwidthKbps =
+                Math.max(this.mLinkDownBandwidthKbps, nc.mLinkDownBandwidthKbps);
+    }
+    private boolean satisfiedByLinkBandwidths(NetworkCapabilities nc) {
+        return !(this.mLinkUpBandwidthKbps > nc.mLinkUpBandwidthKbps ||
+                this.mLinkDownBandwidthKbps > nc.mLinkDownBandwidthKbps);
+    }
+    private boolean equalsLinkBandwidths(NetworkCapabilities nc) {
+        return (this.mLinkUpBandwidthKbps == nc.mLinkUpBandwidthKbps &&
+                this.mLinkDownBandwidthKbps == nc.mLinkDownBandwidthKbps);
+    }
+
+    /**
+     * Combine a set of Capabilities to this one.  Useful for coming up with the complete set
+     * {@hide}
+     */
+    public void combineCapabilities(NetworkCapabilities nc) {
+        combineNetCapabilities(nc);
+        combineTransportTypes(nc);
+        combineLinkBandwidths(nc);
+    }
+
+    /**
+     * Check if our requirements are satisfied by the given Capabilities.
+     * {@hide}
+     */
+    public boolean satisfiedByNetworkCapabilities(NetworkCapabilities nc) {
+        return (nc != null &&
+                satisfiedByNetCapabilities(nc) &&
+                satisfiedByTransportTypes(nc) &&
+                satisfiedByLinkBandwidths(nc));
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null || (obj instanceof NetworkCapabilities == false)) return false;
+        NetworkCapabilities that = (NetworkCapabilities)obj;
+        return (equalsNetCapabilities(that) &&
+                equalsTransportTypes(that) &&
+                equalsLinkBandwidths(that));
+    }
+
+    @Override
+    public int hashCode() {
+        return ((int)(mNetworkCapabilities & 0xFFFFFFFF) +
+                ((int)(mNetworkCapabilities >> 32) * 3) +
+                ((int)(mTransportTypes & 0xFFFFFFFF) * 5) +
+                ((int)(mTransportTypes >> 32) * 7) +
+                (mLinkUpBandwidthKbps * 11) +
+                (mLinkDownBandwidthKbps * 13));
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeLong(mNetworkCapabilities);
+        dest.writeLong(mTransportTypes);
+        dest.writeInt(mLinkUpBandwidthKbps);
+        dest.writeInt(mLinkDownBandwidthKbps);
+    }
+    public static final Creator<NetworkCapabilities> CREATOR =
+        new Creator<NetworkCapabilities>() {
+            public NetworkCapabilities createFromParcel(Parcel in) {
+                NetworkCapabilities netCap = new NetworkCapabilities();
+
+                netCap.mNetworkCapabilities = in.readLong();
+                netCap.mTransportTypes = in.readLong();
+                netCap.mLinkUpBandwidthKbps = in.readInt();
+                netCap.mLinkDownBandwidthKbps = in.readInt();
+                return netCap;
+            }
+            public NetworkCapabilities[] newArray(int size) {
+                return new NetworkCapabilities[size];
+            }
+        };
+
+    public String toString() {
+        int[] types = getTransportTypes();
+        String transports = (types.length > 0 ? " Transports: " : "");
+        for (int i = 0; i < types.length;) {
+            switch (types[i]) {
+                case TRANSPORT_CELLULAR:    transports += "CELLULAR"; break;
+                case TRANSPORT_WIFI:        transports += "WIFI"; break;
+                case TRANSPORT_BLUETOOTH:   transports += "BLUETOOTH"; break;
+                case TRANSPORT_ETHERNET:    transports += "ETHERNET"; break;
+            }
+            if (++i < types.length) transports += "|";
+        }
+
+        types = getCapabilities();
+        String capabilities = (types.length > 0 ? " Capabilities: " : "");
+        for (int i = 0; i < types.length; ) {
+            switch (types[i]) {
+                case NET_CAPABILITY_MMS:            capabilities += "MMS"; break;
+                case NET_CAPABILITY_SUPL:           capabilities += "SUPL"; break;
+                case NET_CAPABILITY_DUN:            capabilities += "DUN"; break;
+                case NET_CAPABILITY_FOTA:           capabilities += "FOTA"; break;
+                case NET_CAPABILITY_IMS:            capabilities += "IMS"; break;
+                case NET_CAPABILITY_CBS:            capabilities += "CBS"; break;
+                case NET_CAPABILITY_WIFI_P2P:       capabilities += "WIFI_P2P"; break;
+                case NET_CAPABILITY_IA:             capabilities += "IA"; break;
+                case NET_CAPABILITY_RCS:            capabilities += "RCS"; break;
+                case NET_CAPABILITY_XCAP:           capabilities += "XCAP"; break;
+                case NET_CAPABILITY_EIMS:           capabilities += "EIMS"; break;
+                case NET_CAPABILITY_NOT_METERED:    capabilities += "NOT_METERED"; break;
+                case NET_CAPABILITY_INTERNET:       capabilities += "INTERNET"; break;
+                case NET_CAPABILITY_NOT_RESTRICTED: capabilities += "NOT_RESTRICTED"; break;
+            }
+            if (++i < types.length) capabilities += "&";
+        }
+
+        String upBand = ((mLinkUpBandwidthKbps > 0) ? " LinkUpBandwidth>=" +
+                mLinkUpBandwidthKbps + "Kbps" : "");
+        String dnBand = ((mLinkDownBandwidthKbps > 0) ? " LinkDnBandwidth>=" +
+                mLinkDownBandwidthKbps + "Kbps" : "");
+
+        return "[" + transports + capabilities + upBand + dnBand + "]";
+    }
+}
diff --git a/core/java/android/net/NetworkConfig.java b/core/java/android/net/NetworkConfig.java
new file mode 100644
index 0000000..32a2cda
--- /dev/null
+++ b/core/java/android/net/NetworkConfig.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import java.util.Locale;
+
+/**
+ * Describes the buildtime configuration of a network.
+ * Holds settings read from resources.
+ * @hide
+ */
+public class NetworkConfig {
+    /**
+     * Human readable string
+     */
+    public String name;
+
+    /**
+     * Type from ConnectivityManager
+     */
+    public int type;
+
+    /**
+     * the radio number from radio attributes config
+     */
+    public int radio;
+
+    /**
+     * higher number == higher priority when turning off connections
+     */
+    public int priority;
+
+    /**
+     * indicates the boot time dependencyMet setting
+     */
+    public boolean dependencyMet;
+
+    /**
+     * indicates the default restoral timer in seconds
+     * if the network is used as a special network feature
+     * -1 indicates no restoration of default
+     */
+    public int restoreTime;
+
+    /**
+     * input string from config.xml resource.  Uses the form:
+     * [Connection name],[ConnectivityManager connection type],
+     * [associated radio-type],[priority],[dependencyMet]
+     */
+    public NetworkConfig(String init) {
+        String fragments[] = init.split(",");
+        name = fragments[0].trim().toLowerCase(Locale.ROOT);
+        type = Integer.parseInt(fragments[1]);
+        radio = Integer.parseInt(fragments[2]);
+        priority = Integer.parseInt(fragments[3]);
+        restoreTime = Integer.parseInt(fragments[4]);
+        dependencyMet = Boolean.parseBoolean(fragments[5]);
+    }
+
+    /**
+     * Indicates if this network is supposed to be default-routable
+     */
+    public boolean isDefault() {
+        return (type == radio);
+    }
+}
diff --git a/core/java/android/net/NetworkInfo.java b/core/java/android/net/NetworkInfo.java
new file mode 100644
index 0000000..d279412
--- /dev/null
+++ b/core/java/android/net/NetworkInfo.java
@@ -0,0 +1,506 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcelable;
+import android.os.Parcel;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.util.EnumMap;
+
+/**
+ * Describes the status of a network interface.
+ * <p>Use {@link ConnectivityManager#getActiveNetworkInfo()} to get an instance that represents
+ * the current network connection.
+ */
+public class NetworkInfo implements Parcelable {
+
+    /**
+     * Coarse-grained network state. This is probably what most applications should
+     * use, rather than {@link android.net.NetworkInfo.DetailedState DetailedState}.
+     * The mapping between the two is as follows:
+     * <br/><br/>
+     * <table>
+     * <tr><td><b>Detailed state</b></td><td><b>Coarse-grained state</b></td></tr>
+     * <tr><td><code>IDLE</code></td><td><code>DISCONNECTED</code></td></tr>
+     * <tr><td><code>SCANNING</code></td><td><code>CONNECTING</code></td></tr>
+     * <tr><td><code>CONNECTING</code></td><td><code>CONNECTING</code></td></tr>
+     * <tr><td><code>AUTHENTICATING</code></td><td><code>CONNECTING</code></td></tr>
+     * <tr><td><code>CONNECTED</code></td><td><code>CONNECTED</code></td></tr>
+     * <tr><td><code>DISCONNECTING</code></td><td><code>DISCONNECTING</code></td></tr>
+     * <tr><td><code>DISCONNECTED</code></td><td><code>DISCONNECTED</code></td></tr>
+     * <tr><td><code>UNAVAILABLE</code></td><td><code>DISCONNECTED</code></td></tr>
+     * <tr><td><code>FAILED</code></td><td><code>DISCONNECTED</code></td></tr>
+     * </table>
+     */
+    public enum State {
+        CONNECTING, CONNECTED, SUSPENDED, DISCONNECTING, DISCONNECTED, UNKNOWN
+    }
+
+    /**
+     * The fine-grained state of a network connection. This level of detail
+     * is probably of interest to few applications. Most should use
+     * {@link android.net.NetworkInfo.State State} instead.
+     */
+    public enum DetailedState {
+        /** Ready to start data connection setup. */
+        IDLE,
+        /** Searching for an available access point. */
+        SCANNING,
+        /** Currently setting up data connection. */
+        CONNECTING,
+        /** Network link established, performing authentication. */
+        AUTHENTICATING,
+        /** Awaiting response from DHCP server in order to assign IP address information. */
+        OBTAINING_IPADDR,
+        /** IP traffic should be available. */
+        CONNECTED,
+        /** IP traffic is suspended */
+        SUSPENDED,
+        /** Currently tearing down data connection. */
+        DISCONNECTING,
+        /** IP traffic not available. */
+        DISCONNECTED,
+        /** Attempt to connect failed. */
+        FAILED,
+        /** Access to this network is blocked. */
+        BLOCKED,
+        /** Link has poor connectivity. */
+        VERIFYING_POOR_LINK,
+        /** Checking if network is a captive portal */
+        CAPTIVE_PORTAL_CHECK
+    }
+
+    /**
+     * This is the map described in the Javadoc comment above. The positions
+     * of the elements of the array must correspond to the ordinal values
+     * of <code>DetailedState</code>.
+     */
+    private static final EnumMap<DetailedState, State> stateMap =
+        new EnumMap<DetailedState, State>(DetailedState.class);
+
+    static {
+        stateMap.put(DetailedState.IDLE, State.DISCONNECTED);
+        stateMap.put(DetailedState.SCANNING, State.DISCONNECTED);
+        stateMap.put(DetailedState.CONNECTING, State.CONNECTING);
+        stateMap.put(DetailedState.AUTHENTICATING, State.CONNECTING);
+        stateMap.put(DetailedState.OBTAINING_IPADDR, State.CONNECTING);
+        stateMap.put(DetailedState.VERIFYING_POOR_LINK, State.CONNECTING);
+        stateMap.put(DetailedState.CAPTIVE_PORTAL_CHECK, State.CONNECTING);
+        stateMap.put(DetailedState.CONNECTED, State.CONNECTED);
+        stateMap.put(DetailedState.SUSPENDED, State.SUSPENDED);
+        stateMap.put(DetailedState.DISCONNECTING, State.DISCONNECTING);
+        stateMap.put(DetailedState.DISCONNECTED, State.DISCONNECTED);
+        stateMap.put(DetailedState.FAILED, State.DISCONNECTED);
+        stateMap.put(DetailedState.BLOCKED, State.DISCONNECTED);
+    }
+
+    private int mNetworkType;
+    private int mSubtype;
+    private String mTypeName;
+    private String mSubtypeName;
+    private State mState;
+    private DetailedState mDetailedState;
+    private String mReason;
+    private String mExtraInfo;
+    private boolean mIsFailover;
+    private boolean mIsRoaming;
+    private boolean mIsConnectedToProvisioningNetwork;
+
+    /**
+     * Indicates whether network connectivity is possible:
+     */
+    private boolean mIsAvailable;
+
+    /**
+     * @param type network type
+     * @deprecated
+     * @hide because this constructor was only meant for internal use (and
+     * has now been superseded by the package-private constructor below).
+     */
+    public NetworkInfo(int type) {}
+
+    /**
+     * @hide
+     */
+    public NetworkInfo(int type, int subtype, String typeName, String subtypeName) {
+        if (!ConnectivityManager.isNetworkTypeValid(type)) {
+            throw new IllegalArgumentException("Invalid network type: " + type);
+        }
+        mNetworkType = type;
+        mSubtype = subtype;
+        mTypeName = typeName;
+        mSubtypeName = subtypeName;
+        setDetailedState(DetailedState.IDLE, null, null);
+        mState = State.UNKNOWN;
+        mIsAvailable = false; // until we're told otherwise, assume unavailable
+        mIsRoaming = false;
+        mIsConnectedToProvisioningNetwork = false;
+    }
+
+    /** {@hide} */
+    public NetworkInfo(NetworkInfo source) {
+        if (source != null) {
+            synchronized (source) {
+                mNetworkType = source.mNetworkType;
+                mSubtype = source.mSubtype;
+                mTypeName = source.mTypeName;
+                mSubtypeName = source.mSubtypeName;
+                mState = source.mState;
+                mDetailedState = source.mDetailedState;
+                mReason = source.mReason;
+                mExtraInfo = source.mExtraInfo;
+                mIsFailover = source.mIsFailover;
+                mIsRoaming = source.mIsRoaming;
+                mIsAvailable = source.mIsAvailable;
+                mIsConnectedToProvisioningNetwork = source.mIsConnectedToProvisioningNetwork;
+            }
+        }
+    }
+
+    /**
+     * Reports the type of network to which the
+     * info in this {@code NetworkInfo} pertains.
+     * @return one of {@link ConnectivityManager#TYPE_MOBILE}, {@link
+     * ConnectivityManager#TYPE_WIFI}, {@link ConnectivityManager#TYPE_WIMAX}, {@link
+     * ConnectivityManager#TYPE_ETHERNET},  {@link ConnectivityManager#TYPE_BLUETOOTH}, or other
+     * types defined by {@link ConnectivityManager}
+     */
+    public int getType() {
+        synchronized (this) {
+            return mNetworkType;
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public void setType(int type) {
+        synchronized (this) {
+            mNetworkType = type;
+        }
+    }
+
+    /**
+     * Return a network-type-specific integer describing the subtype
+     * of the network.
+     * @return the network subtype
+     */
+    public int getSubtype() {
+        synchronized (this) {
+            return mSubtype;
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public void setSubtype(int subtype, String subtypeName) {
+        synchronized (this) {
+            mSubtype = subtype;
+            mSubtypeName = subtypeName;
+        }
+    }
+
+    /**
+     * Return a human-readable name describe the type of the network,
+     * for example "WIFI" or "MOBILE".
+     * @return the name of the network type
+     */
+    public String getTypeName() {
+        synchronized (this) {
+            return mTypeName;
+        }
+    }
+
+    /**
+     * Return a human-readable name describing the subtype of the network.
+     * @return the name of the network subtype
+     */
+    public String getSubtypeName() {
+        synchronized (this) {
+            return mSubtypeName;
+        }
+    }
+
+    /**
+     * Indicates whether network connectivity exists or is in the process
+     * of being established. This is good for applications that need to
+     * do anything related to the network other than read or write data.
+     * For the latter, call {@link #isConnected()} instead, which guarantees
+     * that the network is fully usable.
+     * @return {@code true} if network connectivity exists or is in the process
+     * of being established, {@code false} otherwise.
+     */
+    public boolean isConnectedOrConnecting() {
+        synchronized (this) {
+            return mState == State.CONNECTED || mState == State.CONNECTING;
+        }
+    }
+
+    /**
+     * Indicates whether network connectivity exists and it is possible to establish
+     * connections and pass data.
+     * <p>Always call this before attempting to perform data transactions.
+     * @return {@code true} if network connectivity exists, {@code false} otherwise.
+     */
+    public boolean isConnected() {
+        synchronized (this) {
+            return mState == State.CONNECTED;
+        }
+    }
+
+    /**
+     * Indicates whether network connectivity is possible. A network is unavailable
+     * when a persistent or semi-persistent condition prevents the possibility
+     * of connecting to that network. Examples include
+     * <ul>
+     * <li>The device is out of the coverage area for any network of this type.</li>
+     * <li>The device is on a network other than the home network (i.e., roaming), and
+     * data roaming has been disabled.</li>
+     * <li>The device's radio is turned off, e.g., because airplane mode is enabled.</li>
+     * </ul>
+     * @return {@code true} if the network is available, {@code false} otherwise
+     */
+    public boolean isAvailable() {
+        synchronized (this) {
+            return mIsAvailable;
+        }
+    }
+
+    /**
+     * Sets if the network is available, ie, if the connectivity is possible.
+     * @param isAvailable the new availability value.
+     *
+     * @hide
+     */
+    public void setIsAvailable(boolean isAvailable) {
+        synchronized (this) {
+            mIsAvailable = isAvailable;
+        }
+    }
+
+    /**
+     * Indicates whether the current attempt to connect to the network
+     * resulted from the ConnectivityManager trying to fail over to this
+     * network following a disconnect from another network.
+     * @return {@code true} if this is a failover attempt, {@code false}
+     * otherwise.
+     */
+    public boolean isFailover() {
+        synchronized (this) {
+            return mIsFailover;
+        }
+    }
+
+    /**
+     * Set the failover boolean.
+     * @param isFailover {@code true} to mark the current connection attempt
+     * as a failover.
+     * @hide
+     */
+    public void setFailover(boolean isFailover) {
+        synchronized (this) {
+            mIsFailover = isFailover;
+        }
+    }
+
+    /**
+     * Indicates whether the device is currently roaming on this network.
+     * When {@code true}, it suggests that use of data on this network
+     * may incur extra costs.
+     * @return {@code true} if roaming is in effect, {@code false} otherwise.
+     */
+    public boolean isRoaming() {
+        synchronized (this) {
+            return mIsRoaming;
+        }
+    }
+
+    /** {@hide} */
+    @VisibleForTesting
+    public void setRoaming(boolean isRoaming) {
+        synchronized (this) {
+            mIsRoaming = isRoaming;
+        }
+    }
+
+    /** {@hide} */
+    @VisibleForTesting
+    public boolean isConnectedToProvisioningNetwork() {
+        synchronized (this) {
+            return mIsConnectedToProvisioningNetwork;
+        }
+    }
+
+    /** {@hide} */
+    @VisibleForTesting
+    public void setIsConnectedToProvisioningNetwork(boolean val) {
+        synchronized (this) {
+            mIsConnectedToProvisioningNetwork = val;
+        }
+    }
+
+    /**
+     * Reports the current coarse-grained state of the network.
+     * @return the coarse-grained state
+     */
+    public State getState() {
+        synchronized (this) {
+            return mState;
+        }
+    }
+
+    /**
+     * Reports the current fine-grained state of the network.
+     * @return the fine-grained state
+     */
+    public DetailedState getDetailedState() {
+        synchronized (this) {
+            return mDetailedState;
+        }
+    }
+
+    /**
+     * Sets the fine-grained state of the network.
+     * @param detailedState the {@link DetailedState}.
+     * @param reason a {@code String} indicating the reason for the state change,
+     * if one was supplied. May be {@code null}.
+     * @param extraInfo an optional {@code String} providing addditional network state
+     * information passed up from the lower networking layers.
+     * @hide
+     */
+    public void setDetailedState(DetailedState detailedState, String reason, String extraInfo) {
+        synchronized (this) {
+            this.mDetailedState = detailedState;
+            this.mState = stateMap.get(detailedState);
+            this.mReason = reason;
+            this.mExtraInfo = extraInfo;
+        }
+    }
+
+    /**
+     * Set the extraInfo field.
+     * @param extraInfo an optional {@code String} providing addditional network state
+     * information passed up from the lower networking layers.
+     * @hide
+     */
+    public void setExtraInfo(String extraInfo) {
+        synchronized (this) {
+            this.mExtraInfo = extraInfo;
+        }
+    }
+
+    /**
+     * Report the reason an attempt to establish connectivity failed,
+     * if one is available.
+     * @return the reason for failure, or null if not available
+     */
+    public String getReason() {
+        synchronized (this) {
+            return mReason;
+        }
+    }
+
+    /**
+     * Report the extra information about the network state, if any was
+     * provided by the lower networking layers.,
+     * if one is available.
+     * @return the extra information, or null if not available
+     */
+    public String getExtraInfo() {
+        synchronized (this) {
+            return mExtraInfo;
+        }
+    }
+
+    @Override
+    public String toString() {
+        synchronized (this) {
+            StringBuilder builder = new StringBuilder("[");
+            builder.append("type: ").append(getTypeName()).append("[").append(getSubtypeName()).
+            append("], state: ").append(mState).append("/").append(mDetailedState).
+            append(", reason: ").append(mReason == null ? "(unspecified)" : mReason).
+            append(", extra: ").append(mExtraInfo == null ? "(none)" : mExtraInfo).
+            append(", roaming: ").append(mIsRoaming).
+            append(", failover: ").append(mIsFailover).
+            append(", isAvailable: ").append(mIsAvailable).
+            append(", isConnectedToProvisioningNetwork: ").
+            append(mIsConnectedToProvisioningNetwork).
+            append("]");
+            return builder.toString();
+        }
+    }
+
+    /**
+     * Implement the Parcelable interface
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        synchronized (this) {
+            dest.writeInt(mNetworkType);
+            dest.writeInt(mSubtype);
+            dest.writeString(mTypeName);
+            dest.writeString(mSubtypeName);
+            dest.writeString(mState.name());
+            dest.writeString(mDetailedState.name());
+            dest.writeInt(mIsFailover ? 1 : 0);
+            dest.writeInt(mIsAvailable ? 1 : 0);
+            dest.writeInt(mIsRoaming ? 1 : 0);
+            dest.writeInt(mIsConnectedToProvisioningNetwork ? 1 : 0);
+            dest.writeString(mReason);
+            dest.writeString(mExtraInfo);
+        }
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public static final Creator<NetworkInfo> CREATOR =
+        new Creator<NetworkInfo>() {
+            public NetworkInfo createFromParcel(Parcel in) {
+                int netType = in.readInt();
+                int subtype = in.readInt();
+                String typeName = in.readString();
+                String subtypeName = in.readString();
+                NetworkInfo netInfo = new NetworkInfo(netType, subtype, typeName, subtypeName);
+                netInfo.mState = State.valueOf(in.readString());
+                netInfo.mDetailedState = DetailedState.valueOf(in.readString());
+                netInfo.mIsFailover = in.readInt() != 0;
+                netInfo.mIsAvailable = in.readInt() != 0;
+                netInfo.mIsRoaming = in.readInt() != 0;
+                netInfo.mIsConnectedToProvisioningNetwork = in.readInt() != 0;
+                netInfo.mReason = in.readString();
+                netInfo.mExtraInfo = in.readString();
+                return netInfo;
+            }
+
+            public NetworkInfo[] newArray(int size) {
+                return new NetworkInfo[size];
+            }
+        };
+}
diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
new file mode 100644
index 0000000..7911c72
--- /dev/null
+++ b/core/java/android/net/NetworkRequest.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * Defines a request for a network, made through {@link NetworkRequest.Builder} and used
+ * to request a network via {@link ConnectivityManager#requestNetwork} or listen for changes
+ * via {@link ConnectivityManager#listenForNetwork}.
+ */
+public class NetworkRequest implements Parcelable {
+    /**
+     * The {@link NetworkCapabilities} that define this request.
+     * @hide
+     */
+    public final NetworkCapabilities networkCapabilities;
+
+    /**
+     * Identifies the request.  NetworkRequests should only be constructed by
+     * the Framework and given out to applications as tokens to be used to identify
+     * the request.
+     * @hide
+     */
+    public final int requestId;
+
+    /**
+     * Set for legacy requests and the default.  Set to TYPE_NONE for none.
+     * Causes CONNECTIVITY_ACTION broadcasts to be sent.
+     * @hide
+     */
+    public final int legacyType;
+
+    /**
+     * @hide
+     */
+    public NetworkRequest(NetworkCapabilities nc, int legacyType, int rId) {
+        requestId = rId;
+        networkCapabilities = nc;
+        this.legacyType = legacyType;
+    }
+
+    /**
+     * @hide
+     */
+    public NetworkRequest(NetworkRequest that) {
+        networkCapabilities = new NetworkCapabilities(that.networkCapabilities);
+        requestId = that.requestId;
+        this.legacyType = that.legacyType;
+    }
+
+    /**
+     * Builder used to create {@link NetworkRequest} objects.  Specify the Network features
+     * needed in terms of {@link NetworkCapabilities} features
+     */
+    public static class Builder {
+        private final NetworkCapabilities mNetworkCapabilities = new NetworkCapabilities();
+
+        /**
+         * Default constructor for Builder.
+         */
+        public Builder() {}
+
+        /**
+         * Build {@link NetworkRequest} give the current set of capabilities.
+         */
+        public NetworkRequest build() {
+            return new NetworkRequest(mNetworkCapabilities, ConnectivityManager.TYPE_NONE,
+                    ConnectivityManager.REQUEST_ID_UNSET);
+        }
+
+        /**
+         * Add the given capability requirement to this builder.  These represent
+         * the requested network's required capabilities.  Note that when searching
+         * for a network to satisfy a request, all capabilities requested must be
+         * satisfied.  See {@link NetworkCapabilities} for {@code NET_CAPABILITIY_*}
+         * definitions.
+         *
+         * @param capability The {@code NetworkCapabilities.NET_CAPABILITY_*} to add.
+         * @return The builder to facilitate chaining
+         *         {@code builder.addCapability(...).addCapability();}.
+         */
+        public Builder addCapability(int capability) {
+            mNetworkCapabilities.addCapability(capability);
+            return this;
+        }
+
+        /**
+         * Removes (if found) the given capability from this builder instance.
+         *
+         * @param capability The {@code NetworkCapabilities.NET_CAPABILITY_*} to remove.
+         * @return The builder to facilitate chaining.
+         */
+        public Builder removeCapability(int capability) {
+            mNetworkCapabilities.removeCapability(capability);
+            return this;
+        }
+
+        /**
+         * Adds the given transport requirement to this builder.  These represent
+         * the set of allowed transports for the request.  Only networks using one
+         * of these transports will satisfy the request.  If no particular transports
+         * are required, none should be specified here.  See {@link NetworkCapabilities}
+         * for {@code TRANSPORT_*} definitions.
+         *
+         * @param transportType The {@code NetworkCapabilities.TRANSPORT_*} to add.
+         * @return The builder to facilitate chaining.
+         */
+        public Builder addTransportType(int transportType) {
+            mNetworkCapabilities.addTransportType(transportType);
+            return this;
+        }
+
+        /**
+         * Removes (if found) the given transport from this builder instance.
+         *
+         * @param transportType The {@code NetworkCapabilities.TRANSPORT_*} to remove.
+         * @return The builder to facilitate chaining.
+         */
+        public Builder removeTransportType(int transportType) {
+            mNetworkCapabilities.removeTransportType(transportType);
+            return this;
+        }
+
+        /**
+         * @hide
+         */
+        public Builder setLinkUpstreamBandwidthKbps(int upKbps) {
+            mNetworkCapabilities.setLinkUpstreamBandwidthKbps(upKbps);
+            return this;
+        }
+        /**
+         * @hide
+         */
+        public Builder setLinkDownstreamBandwidthKbps(int downKbps) {
+            mNetworkCapabilities.setLinkDownstreamBandwidthKbps(downKbps);
+            return this;
+        }
+    }
+
+    // implement the Parcelable interface
+    public int describeContents() {
+        return 0;
+    }
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeParcelable(networkCapabilities, flags);
+        dest.writeInt(legacyType);
+        dest.writeInt(requestId);
+    }
+    public static final Creator<NetworkRequest> CREATOR =
+        new Creator<NetworkRequest>() {
+            public NetworkRequest createFromParcel(Parcel in) {
+                NetworkCapabilities nc = (NetworkCapabilities)in.readParcelable(null);
+                int legacyType = in.readInt();
+                int requestId = in.readInt();
+                NetworkRequest result = new NetworkRequest(nc, legacyType, requestId);
+                return result;
+            }
+            public NetworkRequest[] newArray(int size) {
+                return new NetworkRequest[size];
+            }
+        };
+
+    public String toString() {
+        return "NetworkRequest [ id=" + requestId + ", legacyType=" + legacyType +
+                ", " + networkCapabilities.toString() + " ]";
+    }
+
+    public boolean equals(Object obj) {
+        if (obj instanceof NetworkRequest == false) return false;
+        NetworkRequest that = (NetworkRequest)obj;
+        return (that.legacyType == this.legacyType &&
+                that.requestId == this.requestId &&
+                ((that.networkCapabilities == null && this.networkCapabilities == null) ||
+                 (that.networkCapabilities != null &&
+                  that.networkCapabilities.equals(this.networkCapabilities))));
+    }
+
+    public int hashCode() {
+        return requestId + (legacyType * 1013) +
+                (networkCapabilities.hashCode() * 1051);
+    }
+}
diff --git a/core/java/android/net/NetworkState.java b/core/java/android/net/NetworkState.java
new file mode 100644
index 0000000..2e0e9e4
--- /dev/null
+++ b/core/java/android/net/NetworkState.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Snapshot of network state.
+ *
+ * @hide
+ */
+public class NetworkState implements Parcelable {
+
+    public final NetworkInfo networkInfo;
+    public final LinkProperties linkProperties;
+    public final NetworkCapabilities networkCapabilities;
+    /** Currently only used by testing. */
+    public final String subscriberId;
+    public final String networkId;
+
+    public NetworkState(NetworkInfo networkInfo, LinkProperties linkProperties,
+            NetworkCapabilities networkCapabilities) {
+        this(networkInfo, linkProperties, networkCapabilities, null, null);
+    }
+
+    public NetworkState(NetworkInfo networkInfo, LinkProperties linkProperties,
+            NetworkCapabilities networkCapabilities, String subscriberId, String networkId) {
+        this.networkInfo = networkInfo;
+        this.linkProperties = linkProperties;
+        this.networkCapabilities = networkCapabilities;
+        this.subscriberId = subscriberId;
+        this.networkId = networkId;
+    }
+
+    public NetworkState(Parcel in) {
+        networkInfo = in.readParcelable(null);
+        linkProperties = in.readParcelable(null);
+        networkCapabilities = in.readParcelable(null);
+        subscriberId = in.readString();
+        networkId = in.readString();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel out, int flags) {
+        out.writeParcelable(networkInfo, flags);
+        out.writeParcelable(linkProperties, flags);
+        out.writeParcelable(networkCapabilities, flags);
+        out.writeString(subscriberId);
+        out.writeString(networkId);
+    }
+
+    public static final Creator<NetworkState> CREATOR = new Creator<NetworkState>() {
+        @Override
+        public NetworkState createFromParcel(Parcel in) {
+            return new NetworkState(in);
+        }
+
+        @Override
+        public NetworkState[] newArray(int size) {
+            return new NetworkState[size];
+        }
+    };
+
+}
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
new file mode 100644
index 0000000..b02f88e
--- /dev/null
+++ b/core/java/android/net/NetworkUtils.java
@@ -0,0 +1,328 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import java.net.InetAddress;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.UnknownHostException;
+import java.util.Collection;
+import java.util.Locale;
+
+import android.util.Log;
+
+/**
+ * Native methods for managing network interfaces.
+ *
+ * {@hide}
+ */
+public class NetworkUtils {
+
+    private static final String TAG = "NetworkUtils";
+
+    /** Bring the named network interface up. */
+    public native static int enableInterface(String interfaceName);
+
+    /** Bring the named network interface down. */
+    public native static int disableInterface(String interfaceName);
+
+    /** Setting bit 0 indicates reseting of IPv4 addresses required */
+    public static final int RESET_IPV4_ADDRESSES = 0x01;
+
+    /** Setting bit 1 indicates reseting of IPv4 addresses required */
+    public static final int RESET_IPV6_ADDRESSES = 0x02;
+
+    /** Reset all addresses */
+    public static final int RESET_ALL_ADDRESSES = RESET_IPV4_ADDRESSES | RESET_IPV6_ADDRESSES;
+
+    /**
+     * Reset IPv6 or IPv4 sockets that are connected via the named interface.
+     *
+     * @param interfaceName is the interface to reset
+     * @param mask {@see #RESET_IPV4_ADDRESSES} and {@see #RESET_IPV6_ADDRESSES}
+     */
+    public native static int resetConnections(String interfaceName, int mask);
+
+    /**
+     * Start the DHCP client daemon, in order to have it request addresses
+     * for the named interface, and then configure the interface with those
+     * addresses. This call blocks until it obtains a result (either success
+     * or failure) from the daemon.
+     * @param interfaceName the name of the interface to configure
+     * @param dhcpResults if the request succeeds, this object is filled in with
+     * the IP address information.
+     * @return {@code true} for success, {@code false} for failure
+     */
+    public native static boolean runDhcp(String interfaceName, DhcpResults dhcpResults);
+
+    /**
+     * Initiate renewal on the Dhcp client daemon. This call blocks until it obtains
+     * a result (either success or failure) from the daemon.
+     * @param interfaceName the name of the interface to configure
+     * @param dhcpResults if the request succeeds, this object is filled in with
+     * the IP address information.
+     * @return {@code true} for success, {@code false} for failure
+     */
+    public native static boolean runDhcpRenew(String interfaceName, DhcpResults dhcpResults);
+
+    /**
+     * Shut down the DHCP client daemon.
+     * @param interfaceName the name of the interface for which the daemon
+     * should be stopped
+     * @return {@code true} for success, {@code false} for failure
+     */
+    public native static boolean stopDhcp(String interfaceName);
+
+    /**
+     * Release the current DHCP lease.
+     * @param interfaceName the name of the interface for which the lease should
+     * be released
+     * @return {@code true} for success, {@code false} for failure
+     */
+    public native static boolean releaseDhcpLease(String interfaceName);
+
+    /**
+     * Return the last DHCP-related error message that was recorded.
+     * <p/>NOTE: This string is not localized, but currently it is only
+     * used in logging.
+     * @return the most recent error message, if any
+     */
+    public native static String getDhcpError();
+
+    /**
+     * Set the SO_MARK of {@code socketfd} to {@code mark}
+     */
+    public native static void markSocket(int socketfd, int mark);
+
+    /**
+     * Binds the current process to the network designated by {@code netId}.  All sockets created
+     * in the future (and not explicitly bound via a bound {@link SocketFactory} (see
+     * {@link Network#getSocketFactory}) will be bound to this network.  Note that if this
+     * {@code Network} ever disconnects all sockets created in this way will cease to work.  This
+     * is by design so an application doesn't accidentally use sockets it thinks are still bound to
+     * a particular {@code Network}.
+     */
+    public native static void bindProcessToNetwork(int netId);
+
+    /**
+     * Clear any process specific {@code Network} binding.  This reverts a call to
+     * {@link #bindProcessToNetwork}.
+     */
+    public native static void unbindProcessToNetwork();
+
+    /**
+     * Return the netId last passed to {@link #bindProcessToNetwork}, or NETID_UNSET if
+     * {@link #unbindProcessToNetwork} has been called since {@link #bindProcessToNetwork}.
+     */
+    public native static int getNetworkBoundToProcess();
+
+    /**
+     * Binds host resolutions performed by this process to the network designated by {@code netId}.
+     * {@link #bindProcessToNetwork} takes precedence over this setting.
+     *
+     * @deprecated This is strictly for legacy usage to support startUsingNetworkFeature().
+     */
+    public native static void bindProcessToNetworkForHostResolution(int netId);
+
+    /**
+     * Clears any process specific {@link Network} binding for host resolution.  This does
+     * not clear bindings enacted via {@link #bindProcessToNetwork}.
+     *
+     * @deprecated This is strictly for legacy usage to support startUsingNetworkFeature().
+     */
+    public native static void unbindProcessToNetworkForHostResolution();
+
+    /**
+     * Explicitly binds {@code socketfd} to the network designated by {@code netId}.  This
+     * overrides any binding via {@link #bindProcessToNetwork}.
+     */
+    public native static void bindSocketToNetwork(int socketfd, int netId);
+
+    /**
+     * Convert a IPv4 address from an integer to an InetAddress.
+     * @param hostAddress an int corresponding to the IPv4 address in network byte order
+     */
+    public static InetAddress intToInetAddress(int hostAddress) {
+        byte[] addressBytes = { (byte)(0xff & hostAddress),
+                                (byte)(0xff & (hostAddress >> 8)),
+                                (byte)(0xff & (hostAddress >> 16)),
+                                (byte)(0xff & (hostAddress >> 24)) };
+
+        try {
+           return InetAddress.getByAddress(addressBytes);
+        } catch (UnknownHostException e) {
+           throw new AssertionError();
+        }
+    }
+
+    /**
+     * Convert a IPv4 address from an InetAddress to an integer
+     * @param inetAddr is an InetAddress corresponding to the IPv4 address
+     * @return the IP address as an integer in network byte order
+     */
+    public static int inetAddressToInt(Inet4Address inetAddr)
+            throws IllegalArgumentException {
+        byte [] addr = inetAddr.getAddress();
+        return ((addr[3] & 0xff) << 24) | ((addr[2] & 0xff) << 16) |
+                ((addr[1] & 0xff) << 8) | (addr[0] & 0xff);
+    }
+
+    /**
+     * Convert a network prefix length to an IPv4 netmask integer
+     * @param prefixLength
+     * @return the IPv4 netmask as an integer in network byte order
+     */
+    public static int prefixLengthToNetmaskInt(int prefixLength)
+            throws IllegalArgumentException {
+        if (prefixLength < 0 || prefixLength > 32) {
+            throw new IllegalArgumentException("Invalid prefix length (0 <= prefix <= 32)");
+        }
+        int value = 0xffffffff << (32 - prefixLength);
+        return Integer.reverseBytes(value);
+    }
+
+    /**
+     * Convert a IPv4 netmask integer to a prefix length
+     * @param netmask as an integer in network byte order
+     * @return the network prefix length
+     */
+    public static int netmaskIntToPrefixLength(int netmask) {
+        return Integer.bitCount(netmask);
+    }
+
+    /**
+     * Create an InetAddress from a string where the string must be a standard
+     * representation of a V4 or V6 address.  Avoids doing a DNS lookup on failure
+     * but it will throw an IllegalArgumentException in that case.
+     * @param addrString
+     * @return the InetAddress
+     * @hide
+     */
+    public static InetAddress numericToInetAddress(String addrString)
+            throws IllegalArgumentException {
+        return InetAddress.parseNumericAddress(addrString);
+    }
+
+    /**
+     * Get InetAddress masked with prefixLength.  Will never return null.
+     * @param IP address which will be masked with specified prefixLength
+     * @param prefixLength the prefixLength used to mask the IP
+     */
+    public static InetAddress getNetworkPart(InetAddress address, int prefixLength) {
+        if (address == null) {
+            throw new RuntimeException("getNetworkPart doesn't accept null address");
+        }
+
+        byte[] array = address.getAddress();
+
+        if (prefixLength < 0 || prefixLength > array.length * 8) {
+            throw new RuntimeException("getNetworkPart - bad prefixLength");
+        }
+
+        int offset = prefixLength / 8;
+        int reminder = prefixLength % 8;
+        byte mask = (byte)(0xFF << (8 - reminder));
+
+        if (offset < array.length) array[offset] = (byte)(array[offset] & mask);
+
+        offset++;
+
+        for (; offset < array.length; offset++) {
+            array[offset] = 0;
+        }
+
+        InetAddress netPart = null;
+        try {
+            netPart = InetAddress.getByAddress(array);
+        } catch (UnknownHostException e) {
+            throw new RuntimeException("getNetworkPart error - " + e.toString());
+        }
+        return netPart;
+    }
+
+    /**
+     * Check if IP address type is consistent between two InetAddress.
+     * @return true if both are the same type.  False otherwise.
+     */
+    public static boolean addressTypeMatches(InetAddress left, InetAddress right) {
+        return (((left instanceof Inet4Address) && (right instanceof Inet4Address)) ||
+                ((left instanceof Inet6Address) && (right instanceof Inet6Address)));
+    }
+
+    /**
+     * Convert a 32 char hex string into a Inet6Address.
+     * throws a runtime exception if the string isn't 32 chars, isn't hex or can't be
+     * made into an Inet6Address
+     * @param addrHexString a 32 character hex string representing an IPv6 addr
+     * @return addr an InetAddress representation for the string
+     */
+    public static InetAddress hexToInet6Address(String addrHexString)
+            throws IllegalArgumentException {
+        try {
+            return numericToInetAddress(String.format(Locale.US, "%s:%s:%s:%s:%s:%s:%s:%s",
+                    addrHexString.substring(0,4),   addrHexString.substring(4,8),
+                    addrHexString.substring(8,12),  addrHexString.substring(12,16),
+                    addrHexString.substring(16,20), addrHexString.substring(20,24),
+                    addrHexString.substring(24,28), addrHexString.substring(28,32)));
+        } catch (Exception e) {
+            Log.e("NetworkUtils", "error in hexToInet6Address(" + addrHexString + "): " + e);
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    /**
+     * Create a string array of host addresses from a collection of InetAddresses
+     * @param addrs a Collection of InetAddresses
+     * @return an array of Strings containing their host addresses
+     */
+    public static String[] makeStrings(Collection<InetAddress> addrs) {
+        String[] result = new String[addrs.size()];
+        int i = 0;
+        for (InetAddress addr : addrs) {
+            result[i++] = addr.getHostAddress();
+        }
+        return result;
+    }
+
+    /**
+     * Trim leading zeros from IPv4 address strings
+     * Our base libraries will interpret that as octel..
+     * Must leave non v4 addresses and host names alone.
+     * For example, 192.168.000.010 -> 192.168.0.10
+     * TODO - fix base libraries and remove this function
+     * @param addr a string representing an ip addr
+     * @return a string propertly trimmed
+     */
+    public static String trimV4AddrZeros(String addr) {
+        if (addr == null) return null;
+        String[] octets = addr.split("\\.");
+        if (octets.length != 4) return addr;
+        StringBuilder builder = new StringBuilder(16);
+        String result = null;
+        for (int i = 0; i < 4; i++) {
+            try {
+                if (octets[i].length() > 3) return addr;
+                builder.append(Integer.parseInt(octets[i]));
+            } catch (NumberFormatException e) {
+                return addr;
+            }
+            if (i < 3) builder.append('.');
+        }
+        result = builder.toString();
+        return result;
+    }
+}
diff --git a/core/java/android/net/ProxyInfo.java b/core/java/android/net/ProxyInfo.java
new file mode 100644
index 0000000..7ea6bae
--- /dev/null
+++ b/core/java/android/net/ProxyInfo.java
@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.text.TextUtils;
+
+import org.apache.http.client.HttpClient;
+
+import java.net.InetSocketAddress;
+import java.net.URLConnection;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * Describes a proxy configuration.
+ *
+ * Proxy configurations are already integrated within the Apache HTTP stack.
+ * So {@link URLConnection} and {@link HttpClient} will use them automatically.
+ *
+ * Other HTTP stacks will need to obtain the proxy info from
+ * {@link Proxy#PROXY_CHANGE_ACTION} broadcast as the extra {@link Proxy#EXTRA_PROXY_INFO}.
+ */
+public class ProxyInfo implements Parcelable {
+
+    private String mHost;
+    private int mPort;
+    private String mExclusionList;
+    private String[] mParsedExclusionList;
+
+    private Uri mPacFileUrl;
+    /**
+     *@hide
+     */
+    public static final String LOCAL_EXCL_LIST = "";
+    /**
+     *@hide
+     */
+    public static final int LOCAL_PORT = -1;
+    /**
+     *@hide
+     */
+    public static final String LOCAL_HOST = "localhost";
+
+    /**
+     * Constructs a {@link ProxyInfo} object that points at a Direct proxy
+     * on the specified host and port.
+     */
+    public static ProxyInfo buildDirectProxy(String host, int port) {
+        return new ProxyInfo(host, port, null);
+    }
+
+    /**
+     * Constructs a {@link ProxyInfo} object that points at a Direct proxy
+     * on the specified host and port.
+     *
+     * The proxy will not be used to access any host in exclusion list, exclList.
+     *
+     * @param exclList Hosts to exclude using the proxy on connections for.  These
+     *                 hosts can use wildcards such as *.example.com.
+     */
+    public static ProxyInfo buildDirectProxy(String host, int port, List<String> exclList) {
+        String[] array = exclList.toArray(new String[exclList.size()]);
+        return new ProxyInfo(host, port, TextUtils.join(",", array), array);
+    }
+
+    /**
+     * Construct a {@link ProxyInfo} that will download and run the PAC script
+     * at the specified URL.
+     */
+    public static ProxyInfo buildPacProxy(Uri pacUri) {
+        return new ProxyInfo(pacUri);
+    }
+
+    /**
+     * Create a ProxyProperties that points at a HTTP Proxy.
+     * @hide
+     */
+    public ProxyInfo(String host, int port, String exclList) {
+        mHost = host;
+        mPort = port;
+        setExclusionList(exclList);
+        mPacFileUrl = Uri.EMPTY;
+    }
+
+    /**
+     * Create a ProxyProperties that points at a PAC URL.
+     * @hide
+     */
+    public ProxyInfo(Uri pacFileUrl) {
+        mHost = LOCAL_HOST;
+        mPort = LOCAL_PORT;
+        setExclusionList(LOCAL_EXCL_LIST);
+        if (pacFileUrl == null) {
+            throw new NullPointerException();
+        }
+        mPacFileUrl = pacFileUrl;
+    }
+
+    /**
+     * Create a ProxyProperties that points at a PAC URL.
+     * @hide
+     */
+    public ProxyInfo(String pacFileUrl) {
+        mHost = LOCAL_HOST;
+        mPort = LOCAL_PORT;
+        setExclusionList(LOCAL_EXCL_LIST);
+        mPacFileUrl = Uri.parse(pacFileUrl);
+    }
+
+    /**
+     * Only used in PacManager after Local Proxy is bound.
+     * @hide
+     */
+    public ProxyInfo(Uri pacFileUrl, int localProxyPort) {
+        mHost = LOCAL_HOST;
+        mPort = localProxyPort;
+        setExclusionList(LOCAL_EXCL_LIST);
+        if (pacFileUrl == null) {
+            throw new NullPointerException();
+        }
+        mPacFileUrl = pacFileUrl;
+    }
+
+    private ProxyInfo(String host, int port, String exclList, String[] parsedExclList) {
+        mHost = host;
+        mPort = port;
+        mExclusionList = exclList;
+        mParsedExclusionList = parsedExclList;
+        mPacFileUrl = Uri.EMPTY;
+    }
+
+    // copy constructor instead of clone
+    /**
+     * @hide
+     */
+    public ProxyInfo(ProxyInfo source) {
+        if (source != null) {
+            mHost = source.getHost();
+            mPort = source.getPort();
+            mPacFileUrl = source.mPacFileUrl;
+            mExclusionList = source.getExclusionListAsString();
+            mParsedExclusionList = source.mParsedExclusionList;
+        } else {
+            mPacFileUrl = Uri.EMPTY;
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public InetSocketAddress getSocketAddress() {
+        InetSocketAddress inetSocketAddress = null;
+        try {
+            inetSocketAddress = new InetSocketAddress(mHost, mPort);
+        } catch (IllegalArgumentException e) { }
+        return inetSocketAddress;
+    }
+
+    /**
+     * Returns the URL of the current PAC script or null if there is
+     * no PAC script.
+     */
+    public Uri getPacFileUrl() {
+        return mPacFileUrl;
+    }
+
+    /**
+     * When configured to use a Direct Proxy this returns the host
+     * of the proxy.
+     */
+    public String getHost() {
+        return mHost;
+    }
+
+    /**
+     * When configured to use a Direct Proxy this returns the port
+     * of the proxy
+     */
+    public int getPort() {
+        return mPort;
+    }
+
+    /**
+     * When configured to use a Direct Proxy this returns the list
+     * of hosts for which the proxy is ignored.
+     */
+    public String[] getExclusionList() {
+        return mParsedExclusionList;
+    }
+
+    /**
+     * comma separated
+     * @hide
+     */
+    public String getExclusionListAsString() {
+        return mExclusionList;
+    }
+
+    // comma separated
+    private void setExclusionList(String exclusionList) {
+        mExclusionList = exclusionList;
+        if (mExclusionList == null) {
+            mParsedExclusionList = new String[0];
+        } else {
+            mParsedExclusionList = exclusionList.toLowerCase(Locale.ROOT).split(",");
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public boolean isValid() {
+        if (!Uri.EMPTY.equals(mPacFileUrl)) return true;
+        return Proxy.PROXY_VALID == Proxy.validate(mHost == null ? "" : mHost,
+                                                mPort == 0 ? "" : Integer.toString(mPort),
+                                                mExclusionList == null ? "" : mExclusionList);
+    }
+
+    /**
+     * @hide
+     */
+    public java.net.Proxy makeProxy() {
+        java.net.Proxy proxy = java.net.Proxy.NO_PROXY;
+        if (mHost != null) {
+            try {
+                InetSocketAddress inetSocketAddress = new InetSocketAddress(mHost, mPort);
+                proxy = new java.net.Proxy(java.net.Proxy.Type.HTTP, inetSocketAddress);
+            } catch (IllegalArgumentException e) {
+            }
+        }
+        return proxy;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
+            sb.append("PAC Script: ");
+            sb.append(mPacFileUrl);
+        } else if (mHost != null) {
+            sb.append("[");
+            sb.append(mHost);
+            sb.append("] ");
+            sb.append(Integer.toString(mPort));
+            if (mExclusionList != null) {
+                    sb.append(" xl=").append(mExclusionList);
+            }
+        } else {
+            sb.append("[ProxyProperties.mHost == null]");
+        }
+        return sb.toString();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof ProxyInfo)) return false;
+        ProxyInfo p = (ProxyInfo)o;
+        // If PAC URL is present in either then they must be equal.
+        // Other parameters will only be for fall back.
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
+            return mPacFileUrl.equals(p.getPacFileUrl()) && mPort == p.mPort;
+        }
+        if (!Uri.EMPTY.equals(p.mPacFileUrl)) {
+            return false;
+        }
+        if (mExclusionList != null && !mExclusionList.equals(p.getExclusionListAsString())) {
+            return false;
+        }
+        if (mHost != null && p.getHost() != null && mHost.equals(p.getHost()) == false) {
+            return false;
+        }
+        if (mHost != null && p.mHost == null) return false;
+        if (mHost == null && p.mHost != null) return false;
+        if (mPort != p.mPort) return false;
+        return true;
+    }
+
+    /**
+     * Implement the Parcelable interface
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    /*
+     * generate hashcode based on significant fields
+     */
+    public int hashCode() {
+        return ((null == mHost) ? 0 : mHost.hashCode())
+        + ((null == mExclusionList) ? 0 : mExclusionList.hashCode())
+        + mPort;
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
+            dest.writeByte((byte)1);
+            mPacFileUrl.writeToParcel(dest, 0);
+            dest.writeInt(mPort);
+            return;
+        } else {
+            dest.writeByte((byte)0);
+        }
+        if (mHost != null) {
+            dest.writeByte((byte)1);
+            dest.writeString(mHost);
+            dest.writeInt(mPort);
+        } else {
+            dest.writeByte((byte)0);
+        }
+        dest.writeString(mExclusionList);
+        dest.writeStringArray(mParsedExclusionList);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public static final Creator<ProxyInfo> CREATOR =
+        new Creator<ProxyInfo>() {
+            public ProxyInfo createFromParcel(Parcel in) {
+                String host = null;
+                int port = 0;
+                if (in.readByte() != 0) {
+                    Uri url = Uri.CREATOR.createFromParcel(in);
+                    int localPort = in.readInt();
+                    return new ProxyInfo(url, localPort);
+                }
+                if (in.readByte() != 0) {
+                    host = in.readString();
+                    port = in.readInt();
+                }
+                String exclList = in.readString();
+                String[] parsedExclList = in.readStringArray();
+                ProxyInfo proxyProperties =
+                        new ProxyInfo(host, port, exclList, parsedExclList);
+                return proxyProperties;
+            }
+
+            public ProxyInfo[] newArray(int size) {
+                return new ProxyInfo[size];
+            }
+        };
+}
diff --git a/core/java/android/net/RouteInfo.java b/core/java/android/net/RouteInfo.java
new file mode 100644
index 0000000..8b42bcd
--- /dev/null
+++ b/core/java/android/net/RouteInfo.java
@@ -0,0 +1,453 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.net.UnknownHostException;
+import java.net.InetAddress;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+
+import java.util.Collection;
+import java.util.Objects;
+
+/**
+ * Represents a network route.
+ * <p>
+ * This is used both to describe static network configuration and live network
+ * configuration information.
+ *
+ * A route contains three pieces of information:
+ * <ul>
+ * <li>a destination {@link IpPrefix} specifying the network destinations covered by this route.
+ *     If this is {@code null} it indicates a default route of the address family (IPv4 or IPv6)
+ *     implied by the gateway IP address.
+ * <li>a gateway {@link InetAddress} indicating the next hop to use.  If this is {@code null} it
+ *     indicates a directly-connected route.
+ * <li>an interface (which may be unspecified).
+ * </ul>
+ * Either the destination or the gateway may be {@code null}, but not both.  If the
+ * destination and gateway are both specified, they must be of the same address family
+ * (IPv4 or IPv6).
+ */
+public class RouteInfo implements Parcelable {
+    /**
+     * The IP destination address for this route.
+     * TODO: Make this an IpPrefix.
+     */
+    private final LinkAddress mDestination;
+
+    /**
+     * The gateway address for this route.
+     */
+    private final InetAddress mGateway;
+
+    /**
+     * The interface for this route.
+     */
+    private final String mInterface;
+
+    private final boolean mIsDefault;
+    private final boolean mIsHost;
+    private final boolean mHasGateway;
+
+    /**
+     * Constructs a RouteInfo object.
+     *
+     * If destination is null, then gateway must be specified and the
+     * constructed route is either the IPv4 default route <code>0.0.0.0</code>
+     * if the gateway is an instance of {@link Inet4Address}, or the IPv6 default
+     * route <code>::/0</code> if gateway is an instance of
+     * {@link Inet6Address}.
+     * <p>
+     * destination and gateway may not both be null.
+     *
+     * @param destination the destination prefix
+     * @param gateway the IP address to route packets through
+     * @param iface the interface name to send packets on
+     *
+     * TODO: Convert to use IpPrefix.
+     *
+     * @hide
+     */
+    public RouteInfo(IpPrefix destination, InetAddress gateway, String iface) {
+        this(destination == null ? null :
+                new LinkAddress(destination.getAddress(), destination.getPrefixLength()),
+                gateway, iface);
+    }
+
+    /**
+     * @hide
+     */
+    public RouteInfo(LinkAddress destination, InetAddress gateway, String iface) {
+        if (destination == null) {
+            if (gateway != null) {
+                if (gateway instanceof Inet4Address) {
+                    destination = new LinkAddress(Inet4Address.ANY, 0);
+                } else {
+                    destination = new LinkAddress(Inet6Address.ANY, 0);
+                }
+            } else {
+                // no destination, no gateway. invalid.
+                throw new IllegalArgumentException("Invalid arguments passed in: " + gateway + "," +
+                                                   destination);
+            }
+        }
+        if (gateway == null) {
+            if (destination.getAddress() instanceof Inet4Address) {
+                gateway = Inet4Address.ANY;
+            } else {
+                gateway = Inet6Address.ANY;
+            }
+        }
+        mHasGateway = (!gateway.isAnyLocalAddress());
+
+        mDestination = new LinkAddress(NetworkUtils.getNetworkPart(destination.getAddress(),
+                destination.getPrefixLength()), destination.getPrefixLength());
+        if ((destination.getAddress() instanceof Inet4Address &&
+                 (gateway instanceof Inet4Address == false)) ||
+                (destination.getAddress() instanceof Inet6Address &&
+                 (gateway instanceof Inet6Address == false))) {
+            throw new IllegalArgumentException("address family mismatch in RouteInfo constructor");
+        }
+        mGateway = gateway;
+        mInterface = iface;
+        mIsDefault = isDefault();
+        mIsHost = isHost();
+    }
+
+    /**
+     * Constructs a {@code RouteInfo} object.
+     *
+     * If destination is null, then gateway must be specified and the
+     * constructed route is either the IPv4 default route <code>0.0.0.0</code>
+     * if the gateway is an instance of {@link Inet4Address}, or the IPv6 default
+     * route <code>::/0</code> if gateway is an instance of {@link Inet6Address}.
+     * <p>
+     * Destination and gateway may not both be null.
+     *
+     * @param destination the destination address and prefix in an {@link IpPrefix}
+     * @param gateway the {@link InetAddress} to route packets through
+     *
+     * @hide
+     */
+    public RouteInfo(IpPrefix destination, InetAddress gateway) {
+        this(destination, gateway, null);
+    }
+
+    /**
+     * @hide
+     */
+    public RouteInfo(LinkAddress destination, InetAddress gateway) {
+        this(destination, gateway, null);
+    }
+
+    /**
+     * Constructs a default {@code RouteInfo} object.
+     *
+     * @param gateway the {@link InetAddress} to route packets through
+     *
+     * @hide
+     */
+    public RouteInfo(InetAddress gateway) {
+        this((LinkAddress) null, gateway, null);
+    }
+
+    /**
+     * Constructs a {@code RouteInfo} object representing a direct connected subnet.
+     *
+     * @param destination the {@link IpPrefix} describing the address and prefix
+     *                    length of the subnet.
+     *
+     * @hide
+     */
+    public RouteInfo(IpPrefix destination) {
+        this(destination, null, null);
+    }
+
+    /**
+     * @hide
+     */
+    public RouteInfo(LinkAddress destination) {
+        this(destination, null, null);
+    }
+
+    /**
+     * @hide
+     */
+    public static RouteInfo makeHostRoute(InetAddress host, String iface) {
+        return makeHostRoute(host, null, iface);
+    }
+
+    /**
+     * @hide
+     */
+    public static RouteInfo makeHostRoute(InetAddress host, InetAddress gateway, String iface) {
+        if (host == null) return null;
+
+        if (host instanceof Inet4Address) {
+            return new RouteInfo(new LinkAddress(host, 32), gateway, iface);
+        } else {
+            return new RouteInfo(new LinkAddress(host, 128), gateway, iface);
+        }
+    }
+
+    private boolean isHost() {
+        return (mDestination.getAddress() instanceof Inet4Address &&
+                mDestination.getPrefixLength() == 32) ||
+               (mDestination.getAddress() instanceof Inet6Address &&
+                mDestination.getPrefixLength() == 128);
+    }
+
+    private boolean isDefault() {
+        boolean val = false;
+        if (mGateway != null) {
+            if (mGateway instanceof Inet4Address) {
+                val = (mDestination == null || mDestination.getPrefixLength() == 0);
+            } else {
+                val = (mDestination == null || mDestination.getPrefixLength() == 0);
+            }
+        }
+        return val;
+    }
+
+    /**
+     * Retrieves the destination address and prefix length in the form of an {@link IpPrefix}.
+     *
+     * @return {@link IpPrefix} specifying the destination.  This is never {@code null}.
+     */
+    public IpPrefix getDestination() {
+        return new IpPrefix(mDestination.getAddress(), mDestination.getPrefixLength());
+    }
+
+    /**
+     * TODO: Convert callers to use IpPrefix and then remove.
+     * @hide
+     */
+    public LinkAddress getDestinationLinkAddress() {
+        return mDestination;
+    }
+
+    /**
+     * Retrieves the gateway or next hop {@link InetAddress} for this route.
+     *
+     * @return {@link InetAddress} specifying the gateway or next hop.  This may be
+     &                             {@code null} for a directly-connected route."
+     */
+    public InetAddress getGateway() {
+        return mGateway;
+    }
+
+    /**
+     * Retrieves the interface used for this route if specified, else {@code null}.
+     *
+     * @return The name of the interface used for this route.
+     */
+    public String getInterface() {
+        return mInterface;
+    }
+
+    /**
+     * Indicates if this route is a default route (ie, has no destination specified).
+     *
+     * @return {@code true} if the destination has a prefix length of 0.
+     */
+    public boolean isDefaultRoute() {
+        return mIsDefault;
+    }
+
+    /**
+     * Indicates if this route is a host route (ie, matches only a single host address).
+     *
+     * @return {@code true} if the destination has a prefix length of 32 or 128 for IPv4 or IPv6,
+     * respectively.
+     * @hide
+     */
+    public boolean isHostRoute() {
+        return mIsHost;
+    }
+
+    /**
+     * Indicates if this route has a next hop ({@code true}) or is directly-connected
+     * ({@code false}).
+     *
+     * @return {@code true} if a gateway is specified
+     * @hide
+     */
+    public boolean hasGateway() {
+        return mHasGateway;
+    }
+
+    /**
+     * Determines whether the destination and prefix of this route includes the specified
+     * address.
+     *
+     * @param destination A {@link InetAddress} to test to see if it would match this route.
+     * @return {@code true} if the destination and prefix length cover the given address.
+     */
+    public boolean matches(InetAddress destination) {
+        if (destination == null) return false;
+
+        // match the route destination and destination with prefix length
+        InetAddress dstNet = NetworkUtils.getNetworkPart(destination,
+                mDestination.getPrefixLength());
+
+        return mDestination.getAddress().equals(dstNet);
+    }
+
+    /**
+     * Find the route from a Collection of routes that best matches a given address.
+     * May return null if no routes are applicable.
+     * @param routes a Collection of RouteInfos to chose from
+     * @param dest the InetAddress your trying to get to
+     * @return the RouteInfo from the Collection that best fits the given address
+     *
+     * @hide
+     */
+    public static RouteInfo selectBestRoute(Collection<RouteInfo> routes, InetAddress dest) {
+        if ((routes == null) || (dest == null)) return null;
+
+        RouteInfo bestRoute = null;
+        // pick a longest prefix match under same address type
+        for (RouteInfo route : routes) {
+            if (NetworkUtils.addressTypeMatches(route.mDestination.getAddress(), dest)) {
+                if ((bestRoute != null) &&
+                        (bestRoute.mDestination.getPrefixLength() >=
+                        route.mDestination.getPrefixLength())) {
+                    continue;
+                }
+                if (route.matches(dest)) bestRoute = route;
+            }
+        }
+        return bestRoute;
+    }
+
+    /**
+     * Returns a human-readable description of this object.
+     */
+    public String toString() {
+        String val = "";
+        if (mDestination != null) val = mDestination.toString();
+        val += " ->";
+        if (mGateway != null) val += " " + mGateway.getHostAddress();
+        if (mInterface != null) val += " " + mInterface;
+        return val;
+    }
+
+    /**
+     * Compares this RouteInfo object against the specified object and indicates if they are equal.
+     * @return {@code true} if the objects are equal, {@code false} otherwise.
+     */
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+
+        if (!(obj instanceof RouteInfo)) return false;
+
+        RouteInfo target = (RouteInfo) obj;
+
+        return Objects.equals(mDestination, target.getDestinationLinkAddress()) &&
+                Objects.equals(mGateway, target.getGateway()) &&
+                Objects.equals(mInterface, target.getInterface());
+    }
+
+    /**
+     *  Returns a hashcode for this <code>RouteInfo</code> object.
+     */
+    public int hashCode() {
+        return (mDestination == null ? 0 : mDestination.hashCode() * 41)
+                + (mGateway == null ? 0 :mGateway.hashCode() * 47)
+                + (mInterface == null ? 0 :mInterface.hashCode() * 67)
+                + (mIsDefault ? 3 : 7);
+    }
+
+    /**
+     * Implement the Parcelable interface
+     * @hide
+     */
+    public int describeContents() {
+        return 0;
+    }
+
+    /**
+     * Implement the Parcelable interface
+     * @hide
+     */
+    public void writeToParcel(Parcel dest, int flags) {
+        if (mDestination == null) {
+            dest.writeByte((byte) 0);
+        } else {
+            dest.writeByte((byte) 1);
+            dest.writeByteArray(mDestination.getAddress().getAddress());
+            dest.writeInt(mDestination.getPrefixLength());
+        }
+
+        if (mGateway == null) {
+            dest.writeByte((byte) 0);
+        } else {
+            dest.writeByte((byte) 1);
+            dest.writeByteArray(mGateway.getAddress());
+        }
+
+        dest.writeString(mInterface);
+    }
+
+    /**
+     * Implement the Parcelable interface.
+     * @hide
+     */
+    public static final Creator<RouteInfo> CREATOR =
+        new Creator<RouteInfo>() {
+        public RouteInfo createFromParcel(Parcel in) {
+            InetAddress destAddr = null;
+            int prefix = 0;
+            InetAddress gateway = null;
+
+            if (in.readByte() == 1) {
+                byte[] addr = in.createByteArray();
+                prefix = in.readInt();
+
+                try {
+                    destAddr = InetAddress.getByAddress(addr);
+                } catch (UnknownHostException e) {}
+            }
+
+            if (in.readByte() == 1) {
+                byte[] addr = in.createByteArray();
+
+                try {
+                    gateway = InetAddress.getByAddress(addr);
+                } catch (UnknownHostException e) {}
+            }
+
+            String iface = in.readString();
+
+            LinkAddress dest = null;
+
+            if (destAddr != null) {
+                dest = new LinkAddress(destAddr, prefix);
+            }
+
+            return new RouteInfo(dest, gateway, iface);
+        }
+
+        public RouteInfo[] newArray(int size) {
+            return new RouteInfo[size];
+        }
+    };
+}
diff --git a/core/jni/android_net_NetUtils.cpp b/core/jni/android_net_NetUtils.cpp
new file mode 100644
index 0000000..bc5e1b3
--- /dev/null
+++ b/core/jni/android_net_NetUtils.cpp
@@ -0,0 +1,337 @@
+/*
+ * Copyright 2008, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "NetUtils"
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include "NetdClient.h"
+#include "resolv_netid.h"
+#include <utils/misc.h>
+#include <android_runtime/AndroidRuntime.h>
+#include <utils/Log.h>
+#include <arpa/inet.h>
+#include <cutils/properties.h>
+
+extern "C" {
+int ifc_enable(const char *ifname);
+int ifc_disable(const char *ifname);
+int ifc_reset_connections(const char *ifname, int reset_mask);
+
+int dhcp_do_request(const char * const ifname,
+                    const char *ipaddr,
+                    const char *gateway,
+                    uint32_t *prefixLength,
+                    const char *dns[],
+                    const char *server,
+                    uint32_t *lease,
+                    const char *vendorInfo,
+                    const char *domains,
+                    const char *mtu);
+
+int dhcp_do_request_renew(const char * const ifname,
+                    const char *ipaddr,
+                    const char *gateway,
+                    uint32_t *prefixLength,
+                    const char *dns[],
+                    const char *server,
+                    uint32_t *lease,
+                    const char *vendorInfo,
+                    const char *domains,
+                    const char *mtu);
+
+int dhcp_stop(const char *ifname);
+int dhcp_release_lease(const char *ifname);
+char *dhcp_get_errmsg();
+}
+
+#define NETUTILS_PKG_NAME "android/net/NetworkUtils"
+
+namespace android {
+
+/*
+ * The following remembers the jfieldID's of the fields
+ * of the DhcpInfo Java object, so that we don't have
+ * to look them up every time.
+ */
+static struct fieldIds {
+    jmethodID clear;
+    jmethodID setInterfaceName;
+    jmethodID addLinkAddress;
+    jmethodID addGateway;
+    jmethodID addDns;
+    jmethodID setDomains;
+    jmethodID setServerAddress;
+    jmethodID setLeaseDuration;
+    jmethodID setVendorInfo;
+} dhcpResultsFieldIds;
+
+static jint android_net_utils_enableInterface(JNIEnv* env, jobject clazz, jstring ifname)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    result = ::ifc_enable(nameStr);
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    return (jint)result;
+}
+
+static jint android_net_utils_disableInterface(JNIEnv* env, jobject clazz, jstring ifname)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    result = ::ifc_disable(nameStr);
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    return (jint)result;
+}
+
+static jint android_net_utils_resetConnections(JNIEnv* env, jobject clazz,
+      jstring ifname, jint mask)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+
+    ALOGD("android_net_utils_resetConnections in env=%p clazz=%p iface=%s mask=0x%x\n",
+          env, clazz, nameStr, mask);
+
+    result = ::ifc_reset_connections(nameStr, mask);
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    return (jint)result;
+}
+
+static jboolean android_net_utils_runDhcpCommon(JNIEnv* env, jobject clazz, jstring ifname,
+        jobject dhcpResults, bool renew)
+{
+    int result;
+    char  ipaddr[PROPERTY_VALUE_MAX];
+    uint32_t prefixLength;
+    char gateway[PROPERTY_VALUE_MAX];
+    char    dns1[PROPERTY_VALUE_MAX];
+    char    dns2[PROPERTY_VALUE_MAX];
+    char    dns3[PROPERTY_VALUE_MAX];
+    char    dns4[PROPERTY_VALUE_MAX];
+    const char *dns[5] = {dns1, dns2, dns3, dns4, NULL};
+    char  server[PROPERTY_VALUE_MAX];
+    uint32_t lease;
+    char vendorInfo[PROPERTY_VALUE_MAX];
+    char domains[PROPERTY_VALUE_MAX];
+    char mtu[PROPERTY_VALUE_MAX];
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    if (nameStr == NULL) return (jboolean)false;
+
+    if (renew) {
+        result = ::dhcp_do_request_renew(nameStr, ipaddr, gateway, &prefixLength,
+                dns, server, &lease, vendorInfo, domains, mtu);
+    } else {
+        result = ::dhcp_do_request(nameStr, ipaddr, gateway, &prefixLength,
+                dns, server, &lease, vendorInfo, domains, mtu);
+    }
+    if (result != 0) {
+        ALOGD("dhcp_do_request failed : %s (%s)", nameStr, renew ? "renew" : "new");
+    }
+
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    if (result == 0) {
+        env->CallVoidMethod(dhcpResults, dhcpResultsFieldIds.clear);
+
+        // set mIfaceName
+        // dhcpResults->setInterfaceName(ifname)
+        env->CallVoidMethod(dhcpResults, dhcpResultsFieldIds.setInterfaceName, ifname);
+
+        // set the linkAddress
+        // dhcpResults->addLinkAddress(inetAddress, prefixLength)
+        result = env->CallBooleanMethod(dhcpResults, dhcpResultsFieldIds.addLinkAddress,
+                env->NewStringUTF(ipaddr), prefixLength);
+    }
+
+    if (result == 0) {
+        // set the gateway
+        // dhcpResults->addGateway(gateway)
+        result = env->CallBooleanMethod(dhcpResults,
+                dhcpResultsFieldIds.addGateway, env->NewStringUTF(gateway));
+    }
+
+    if (result == 0) {
+        // dhcpResults->addDns(new InetAddress(dns1))
+        result = env->CallBooleanMethod(dhcpResults,
+                dhcpResultsFieldIds.addDns, env->NewStringUTF(dns1));
+    }
+
+    if (result == 0) {
+        env->CallVoidMethod(dhcpResults, dhcpResultsFieldIds.setDomains,
+                env->NewStringUTF(domains));
+
+        result = env->CallBooleanMethod(dhcpResults,
+                dhcpResultsFieldIds.addDns, env->NewStringUTF(dns2));
+
+        if (result == 0) {
+            result = env->CallBooleanMethod(dhcpResults,
+                    dhcpResultsFieldIds.addDns, env->NewStringUTF(dns3));
+            if (result == 0) {
+                result = env->CallBooleanMethod(dhcpResults,
+                        dhcpResultsFieldIds.addDns, env->NewStringUTF(dns4));
+            }
+        }
+    }
+
+    if (result == 0) {
+        // dhcpResults->setServerAddress(new InetAddress(server))
+        result = env->CallBooleanMethod(dhcpResults, dhcpResultsFieldIds.setServerAddress,
+                env->NewStringUTF(server));
+    }
+
+    if (result == 0) {
+        // dhcpResults->setLeaseDuration(lease)
+        env->CallVoidMethod(dhcpResults,
+                dhcpResultsFieldIds.setLeaseDuration, lease);
+
+        // dhcpResults->setVendorInfo(vendorInfo)
+        env->CallVoidMethod(dhcpResults, dhcpResultsFieldIds.setVendorInfo,
+                env->NewStringUTF(vendorInfo));
+    }
+    return (jboolean)(result == 0);
+}
+
+
+static jboolean android_net_utils_runDhcp(JNIEnv* env, jobject clazz, jstring ifname, jobject info)
+{
+    return android_net_utils_runDhcpCommon(env, clazz, ifname, info, false);
+}
+
+static jboolean android_net_utils_runDhcpRenew(JNIEnv* env, jobject clazz, jstring ifname, jobject info)
+{
+    return android_net_utils_runDhcpCommon(env, clazz, ifname, info, true);
+}
+
+
+static jboolean android_net_utils_stopDhcp(JNIEnv* env, jobject clazz, jstring ifname)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    result = ::dhcp_stop(nameStr);
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    return (jboolean)(result == 0);
+}
+
+static jboolean android_net_utils_releaseDhcpLease(JNIEnv* env, jobject clazz, jstring ifname)
+{
+    int result;
+
+    const char *nameStr = env->GetStringUTFChars(ifname, NULL);
+    result = ::dhcp_release_lease(nameStr);
+    env->ReleaseStringUTFChars(ifname, nameStr);
+    return (jboolean)(result == 0);
+}
+
+static jstring android_net_utils_getDhcpError(JNIEnv* env, jobject clazz)
+{
+    return env->NewStringUTF(::dhcp_get_errmsg());
+}
+
+static void android_net_utils_markSocket(JNIEnv *env, jobject thiz, jint socket, jint mark)
+{
+    if (setsockopt(socket, SOL_SOCKET, SO_MARK, &mark, sizeof(mark)) < 0) {
+        jniThrowException(env, "java/lang/IllegalStateException", "Error marking socket");
+    }
+}
+
+static void android_net_utils_bindProcessToNetwork(JNIEnv *env, jobject thiz, jint netId)
+{
+    setNetworkForProcess(netId);
+}
+
+static void android_net_utils_unbindProcessToNetwork(JNIEnv *env, jobject thiz)
+{
+    setNetworkForProcess(NETID_UNSET);
+}
+
+static jint android_net_utils_getNetworkBoundToProcess(JNIEnv *env, jobject thiz)
+{
+    return getNetworkForProcess();
+}
+
+static void android_net_utils_bindProcessToNetworkForHostResolution(JNIEnv *env, jobject thiz, jint netId)
+{
+    setNetworkForResolv(netId);
+}
+
+static void android_net_utils_unbindProcessToNetworkForHostResolution(JNIEnv *env, jobject thiz)
+{
+    setNetworkForResolv(NETID_UNSET);
+}
+
+static void android_net_utils_bindSocketToNetwork(JNIEnv *env, jobject thiz, jint socket, jint netId)
+{
+    setNetworkForSocket(netId, socket);
+}
+
+// ----------------------------------------------------------------------------
+
+/*
+ * JNI registration.
+ */
+static JNINativeMethod gNetworkUtilMethods[] = {
+    /* name, signature, funcPtr */
+
+    { "enableInterface", "(Ljava/lang/String;)I",  (void *)android_net_utils_enableInterface },
+    { "disableInterface", "(Ljava/lang/String;)I",  (void *)android_net_utils_disableInterface },
+    { "resetConnections", "(Ljava/lang/String;I)I",  (void *)android_net_utils_resetConnections },
+    { "runDhcp", "(Ljava/lang/String;Landroid/net/DhcpResults;)Z",  (void *)android_net_utils_runDhcp },
+    { "runDhcpRenew", "(Ljava/lang/String;Landroid/net/DhcpResults;)Z",  (void *)android_net_utils_runDhcpRenew },
+    { "stopDhcp", "(Ljava/lang/String;)Z",  (void *)android_net_utils_stopDhcp },
+    { "releaseDhcpLease", "(Ljava/lang/String;)Z",  (void *)android_net_utils_releaseDhcpLease },
+    { "getDhcpError", "()Ljava/lang/String;", (void*) android_net_utils_getDhcpError },
+    { "markSocket", "(II)V", (void*) android_net_utils_markSocket },
+    { "bindProcessToNetwork", "(I)V", (void*) android_net_utils_bindProcessToNetwork },
+    { "getNetworkBoundToProcess", "()I", (void*) android_net_utils_getNetworkBoundToProcess },
+    { "unbindProcessToNetwork", "()V", (void*) android_net_utils_unbindProcessToNetwork },
+    { "bindProcessToNetworkForHostResolution", "(I)V", (void*) android_net_utils_bindProcessToNetworkForHostResolution },
+    { "unbindProcessToNetworkForHostResolution", "()V", (void*) android_net_utils_unbindProcessToNetworkForHostResolution },
+    { "bindSocketToNetwork", "(II)V", (void*) android_net_utils_bindSocketToNetwork },
+};
+
+int register_android_net_NetworkUtils(JNIEnv* env)
+{
+    jclass dhcpResultsClass = env->FindClass("android/net/DhcpResults");
+    LOG_FATAL_IF(dhcpResultsClass == NULL, "Unable to find class android/net/DhcpResults");
+    dhcpResultsFieldIds.clear =
+            env->GetMethodID(dhcpResultsClass, "clear", "()V");
+    dhcpResultsFieldIds.setInterfaceName =
+            env->GetMethodID(dhcpResultsClass, "setInterfaceName", "(Ljava/lang/String;)V");
+    dhcpResultsFieldIds.addLinkAddress =
+            env->GetMethodID(dhcpResultsClass, "addLinkAddress", "(Ljava/lang/String;I)Z");
+    dhcpResultsFieldIds.addGateway =
+            env->GetMethodID(dhcpResultsClass, "addGateway", "(Ljava/lang/String;)Z");
+    dhcpResultsFieldIds.addDns =
+            env->GetMethodID(dhcpResultsClass, "addDns", "(Ljava/lang/String;)Z");
+    dhcpResultsFieldIds.setDomains =
+            env->GetMethodID(dhcpResultsClass, "setDomains", "(Ljava/lang/String;)V");
+    dhcpResultsFieldIds.setServerAddress =
+            env->GetMethodID(dhcpResultsClass, "setServerAddress", "(Ljava/lang/String;)Z");
+    dhcpResultsFieldIds.setLeaseDuration =
+            env->GetMethodID(dhcpResultsClass, "setLeaseDuration", "(I)V");
+    dhcpResultsFieldIds.setVendorInfo =
+            env->GetMethodID(dhcpResultsClass, "setVendorInfo", "(Ljava/lang/String;)V");
+
+    return AndroidRuntime::registerNativeMethods(env,
+            NETUTILS_PKG_NAME, gNetworkUtilMethods, NELEM(gNetworkUtilMethods));
+}
+
+}; // namespace android
diff --git a/core/tests/coretests/res/raw/xt_qtaguid_iface_fmt_typical b/core/tests/coretests/res/raw/xt_qtaguid_iface_fmt_typical
new file mode 100644
index 0000000..656d5bb
--- /dev/null
+++ b/core/tests/coretests/res/raw/xt_qtaguid_iface_fmt_typical
@@ -0,0 +1,4 @@
+ifname total_skb_rx_bytes total_skb_rx_packets total_skb_tx_bytes total_skb_tx_packets
+rmnet2 4968 35 3081 39
+rmnet1 11153922 8051 190226 2468
+rmnet0 6824 16 5692 10
diff --git a/core/tests/coretests/res/raw/xt_qtaguid_iface_typical b/core/tests/coretests/res/raw/xt_qtaguid_iface_typical
new file mode 100644
index 0000000..610723a
--- /dev/null
+++ b/core/tests/coretests/res/raw/xt_qtaguid_iface_typical
@@ -0,0 +1,6 @@
+rmnet3 1 0 0 0 0 20822 501 1149991 815
+rmnet2 1 0 0 0 0 1594 15 1313 15
+rmnet1 1 0 0 0 0 207398 458 166918 565
+rmnet0 1 0 0 0 0 2112 24 700 10
+test1 1 1 2 3 4 5 6 7 8
+test2 0 1 2 3 4 5 6 7 8
diff --git a/core/tests/coretests/res/raw/xt_qtaguid_typical b/core/tests/coretests/res/raw/xt_qtaguid_typical
new file mode 100644
index 0000000..c1b0d25
--- /dev/null
+++ b/core/tests/coretests/res/raw/xt_qtaguid_typical
@@ -0,0 +1,71 @@
+idx iface acct_tag_hex uid_tag_int cnt_set rx_bytes rx_packets tx_bytes tx_packets rx_tcp_bytes rx_tcp_packets rx_udp_bytes rx_udp_packets rx_other_bytes rx_other_packets tx_tcp_bytes tx_tcp_packets tx_udp_bytes tx_udp_packets tx_other_bytes tx_other_packets
+2 wlan0 0x0 0 0 18621 96 2898 44 312 6 15897 58 2412 32 312 6 1010 16 1576 22
+3 wlan0 0x0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+4 wlan0 0x0 1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+5 wlan0 0x0 1000 1 1949 13 1078 14 0 0 1600 10 349 3 0 0 600 10 478 4
+6 wlan0 0x0 10005 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+7 wlan0 0x0 10005 1 32081 38 5315 50 32081 38 0 0 0 0 5315 50 0 0 0 0
+8 wlan0 0x0 10011 0 35777 53 5718 57 0 0 0 0 35777 53 0 0 0 0 5718 57
+9 wlan0 0x0 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+10 wlan0 0x0 10014 0 0 0 1098 13 0 0 0 0 0 0 0 0 0 0 1098 13
+11 wlan0 0x0 10014 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+12 wlan0 0x0 10021 0 562386 573 49228 549 0 0 0 0 562386 573 0 0 0 0 49228 549
+13 wlan0 0x0 10021 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+14 wlan0 0x0 10031 0 3425 5 586 6 0 0 0 0 3425 5 0 0 0 0 586 6
+15 wlan0 0x0 10031 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+16 wlan0 0x7fffff0100000000 10021 0 562386 573 49228 549 0 0 0 0 562386 573 0 0 0 0 49228 549
+17 wlan0 0x7fffff0100000000 10021 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+18 wlan0 0x7fffff0100000000 10031 0 3425 5 586 6 0 0 0 0 3425 5 0 0 0 0 586 6
+19 wlan0 0x7fffff0100000000 10031 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+20 rmnet2 0x0 0 0 547 5 118 2 40 1 243 1 264 3 0 0 62 1 56 1
+21 rmnet2 0x0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+22 rmnet2 0x0 10001 0 1125899906842624 5 984 11 632 5 0 0 0 0 984 11 0 0 0 0
+23 rmnet2 0x0 10001 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+24 rmnet1 0x0 0 0 26736 174 7098 130 7210 97 18382 64 1144 13 2932 64 4054 64 112 2
+25 rmnet1 0x0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+26 rmnet1 0x0 1000 0 75774 77 18038 78 75335 72 439 5 0 0 17668 73 370 5 0 0
+27 rmnet1 0x0 1000 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+28 rmnet1 0x0 10007 0 269945 578 111632 586 269945 578 0 0 0 0 111632 586 0 0 0 0
+29 rmnet1 0x0 10007 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+30 rmnet1 0x0 10011 0 1741256 6918 769778 7019 1741256 6918 0 0 0 0 769778 7019 0 0 0 0
+31 rmnet1 0x0 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+32 rmnet1 0x0 10014 0 0 0 786 12 0 0 0 0 0 0 786 12 0 0 0 0
+33 rmnet1 0x0 10014 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+34 rmnet1 0x0 10021 0 433533 1454 393420 1604 433533 1454 0 0 0 0 393420 1604 0 0 0 0
+35 rmnet1 0x0 10021 1 21215 33 10278 33 21215 33 0 0 0 0 10278 33 0 0 0 0
+36 rmnet1 0x0 10036 0 6310 25 3284 29 6310 25 0 0 0 0 3284 29 0 0 0 0
+37 rmnet1 0x0 10036 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+38 rmnet1 0x0 10047 0 34264 47 3936 34 34264 47 0 0 0 0 3936 34 0 0 0 0
+39 rmnet1 0x0 10047 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+40 rmnet1 0x4e7700000000 10011 0 9187 27 4248 33 9187 27 0 0 0 0 4248 33 0 0 0 0
+41 rmnet1 0x4e7700000000 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+42 rmnet1 0x1000000000000000 10007 0 2109 4 791 4 2109 4 0 0 0 0 791 4 0 0 0 0
+43 rmnet1 0x1000000000000000 10007 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+44 rmnet1 0x1000000400000000 10007 0 9811 22 6286 22 9811 22 0 0 0 0 6286 22 0 0 0 0
+45 rmnet1 0x1000000400000000 10007 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+46 rmnet1 0x1010000000000000 10021 0 164833 426 135392 527 164833 426 0 0 0 0 135392 527 0 0 0 0
+47 rmnet1 0x1010000000000000 10021 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+48 rmnet1 0x1144000400000000 10011 0 10112 18 3334 17 10112 18 0 0 0 0 3334 17 0 0 0 0
+49 rmnet1 0x1144000400000000 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+50 rmnet1 0x1244000400000000 10011 0 1300 3 848 2 1300 3 0 0 0 0 848 2 0 0 0 0
+51 rmnet1 0x1244000400000000 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+52 rmnet1 0x3000000000000000 10007 0 10389 14 1521 12 10389 14 0 0 0 0 1521 12 0 0 0 0
+53 rmnet1 0x3000000000000000 10007 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+54 rmnet1 0x3000000400000000 10007 0 238070 380 93938 404 238070 380 0 0 0 0 93938 404 0 0 0 0
+55 rmnet1 0x3000000400000000 10007 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+56 rmnet1 0x3010000000000000 10021 0 219110 578 227423 676 219110 578 0 0 0 0 227423 676 0 0 0 0
+57 rmnet1 0x3010000000000000 10021 1 742 3 1265 3 742 3 0 0 0 0 1265 3 0 0 0 0
+58 rmnet1 0x3020000000000000 10021 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+59 rmnet1 0x3020000000000000 10021 1 20473 30 9013 30 20473 30 0 0 0 0 9013 30 0 0 0 0
+60 rmnet1 0x3144000400000000 10011 0 43963 92 34414 116 43963 92 0 0 0 0 34414 116 0 0 0 0
+61 rmnet1 0x3144000400000000 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+62 rmnet1 0x3244000400000000 10011 0 3486 8 1520 9 3486 8 0 0 0 0 1520 9 0 0 0 0
+63 rmnet1 0x3244000400000000 10011 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+64 rmnet1 0x7fffff0100000000 10021 0 29102 56 8865 60 29102 56 0 0 0 0 8865 60 0 0 0 0
+65 rmnet1 0x7fffff0100000000 10021 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+66 rmnet1 0x7fffff0300000000 1000 0 995 13 14145 14 995 13 0 0 0 0 14145 14 0 0 0 0
+67 rmnet1 0x7fffff0300000000 1000 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+68 rmnet0 0x0 0 0 4312 49 1288 23 0 0 0 0 4312 49 0 0 0 0 1288 23
+69 rmnet0 0x0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+70 rmnet0 0x0 10080 0 22266 30 20976 30 0 0 0 0 22266 30 0 0 0 0 20976 30
+71 rmnet0 0x0 10080 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/core/tests/coretests/src/android/net/LinkAddressTest.java b/core/tests/coretests/src/android/net/LinkAddressTest.java
new file mode 100644
index 0000000..814ecdd
--- /dev/null
+++ b/core/tests/coretests/src/android/net/LinkAddressTest.java
@@ -0,0 +1,331 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+import android.net.LinkAddress;
+import android.os.Parcel;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import static android.system.OsConstants.IFA_F_DEPRECATED;
+import static android.system.OsConstants.IFA_F_PERMANENT;
+import static android.system.OsConstants.IFA_F_TENTATIVE;
+import static android.system.OsConstants.RT_SCOPE_HOST;
+import static android.system.OsConstants.RT_SCOPE_LINK;
+import static android.system.OsConstants.RT_SCOPE_SITE;
+import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
+
+/**
+ * Tests for {@link LinkAddress}.
+ */
+public class LinkAddressTest extends AndroidTestCase {
+
+    private static final String V4 = "192.0.2.1";
+    private static final String V6 = "2001:db8::1";
+    private static final InetAddress V4_ADDRESS = NetworkUtils.numericToInetAddress(V4);
+    private static final InetAddress V6_ADDRESS = NetworkUtils.numericToInetAddress(V6);
+
+    public void testConstructors() throws SocketException {
+        LinkAddress address;
+
+        // Valid addresses work as expected.
+        address = new LinkAddress(V4_ADDRESS, 25);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(25, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+
+        address = new LinkAddress(V6_ADDRESS, 127);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(127, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+
+        // Nonsensical flags/scopes or combinations thereof are acceptable.
+        address = new LinkAddress(V6 + "/64", IFA_F_DEPRECATED | IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(IFA_F_DEPRECATED | IFA_F_PERMANENT, address.getFlags());
+        assertEquals(RT_SCOPE_LINK, address.getScope());
+
+        address = new LinkAddress(V4 + "/23", 123, 456);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(23, address.getPrefixLength());
+        assertEquals(123, address.getFlags());
+        assertEquals(456, address.getScope());
+
+        // InterfaceAddress doesn't have a constructor. Fetch some from an interface.
+        List<InterfaceAddress> addrs = NetworkInterface.getByName("lo").getInterfaceAddresses();
+
+        // We expect to find 127.0.0.1/8 and ::1/128, in any order.
+        LinkAddress ipv4Loopback, ipv6Loopback;
+        assertEquals(2, addrs.size());
+        if (addrs.get(0).getAddress() instanceof Inet4Address) {
+            ipv4Loopback = new LinkAddress(addrs.get(0));
+            ipv6Loopback = new LinkAddress(addrs.get(1));
+        } else {
+            ipv4Loopback = new LinkAddress(addrs.get(1));
+            ipv6Loopback = new LinkAddress(addrs.get(0));
+        }
+
+        assertEquals(NetworkUtils.numericToInetAddress("127.0.0.1"), ipv4Loopback.getAddress());
+        assertEquals(8, ipv4Loopback.getPrefixLength());
+
+        assertEquals(NetworkUtils.numericToInetAddress("::1"), ipv6Loopback.getAddress());
+        assertEquals(128, ipv6Loopback.getPrefixLength());
+
+        // Null addresses are rejected.
+        try {
+            address = new LinkAddress(null, 24);
+            fail("Null InetAddress should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((String) null, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("Null string should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((InterfaceAddress) null);
+            fail("Null string should cause NullPointerException");
+        } catch(NullPointerException expected) {}
+
+        // Invalid prefix lengths are rejected.
+        try {
+            address = new LinkAddress(V4_ADDRESS, -1);
+            fail("Negative IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, -1);
+            fail("Negative IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4_ADDRESS, 33);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4 + "/33", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, 129, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6 + "/129", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        // Multicast addresses are rejected.
+        try {
+            address = new LinkAddress("224.0.0.2/32");
+            fail("IPv4 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress("ff02::1/128");
+            fail("IPv6 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+    }
+
+    public void testAddressScopes() {
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("::/128").getScope());
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("0.0.0.0/32").getScope());
+
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("::1/128").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("127.0.0.5/8").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("fe80::ace:d00d/64").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("169.254.5.12/16").getScope());
+
+        assertEquals(RT_SCOPE_SITE, new LinkAddress("fec0::dead/64").getScope());
+
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("10.1.2.3/21").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("192.0.2.1/25").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("2001:db8::/64").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("5000::/127").getScope());
+    }
+
+    private void assertIsSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertTrue(l1 + " unexpectedly does not have same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertTrue(l2 + " unexpectedly does not have same address as " + l1,
+                l2.isSameAddressAs(l1));
+    }
+
+    private void assertIsNotSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertFalse(l1 + " unexpectedly has same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertFalse(l2 + " unexpectedly has same address as " + l1,
+                l1.isSameAddressAs(l2));
+    }
+
+    private void assertLinkAddressesEqual(LinkAddress l1, LinkAddress l2) {
+        assertTrue(l1 + " unexpectedly not equal to " + l2, l1.equals(l2));
+        assertTrue(l2 + " unexpectedly not equal to " + l1, l2.equals(l1));
+        assertEquals(l1.hashCode(), l2.hashCode());
+    }
+
+    private void assertLinkAddressesNotEqual(LinkAddress l1, LinkAddress l2) {
+        assertFalse(l1 + " unexpectedly equal to " + l2, l1.equals(l2));
+        assertFalse(l2 + " unexpectedly equal to " + l1, l2.equals(l1));
+    }
+
+    public void testEqualsAndSameAddressAs() {
+        LinkAddress l1, l2, l3;
+
+        l1 = new LinkAddress("2001:db8::1/64");
+        l2 = new LinkAddress("2001:db8::1/64");
+        assertLinkAddressesEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::1/65");
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::2/64");
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        l1 = new LinkAddress("192.0.2.1/24");
+        l2 = new LinkAddress("192.0.2.1/24");
+        assertLinkAddressesEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.1/23");
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.2/24");
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        // Check equals() and isSameAddressAs() on identical addresses with different flags.
+        l1 = new LinkAddress(V6_ADDRESS, 64);
+        l2 = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_UNIVERSE);
+        assertLinkAddressesEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_UNIVERSE);
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Check equals() and isSameAddressAs() on identical addresses with different scope.
+        l1 = new LinkAddress(V4_ADDRESS, 24);
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_UNIVERSE);
+        assertLinkAddressesEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_HOST);
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Addresses with the same start or end bytes aren't equal between families.
+        l1 = new LinkAddress("32.1.13.184/24");
+        l2 = new LinkAddress("2001:db8::1/24");
+        l3 = new LinkAddress("::2001:db8/24");
+
+        byte[] ipv4Bytes = l1.getAddress().getAddress();
+        byte[] l2FirstIPv6Bytes = Arrays.copyOf(l2.getAddress().getAddress(), 4);
+        byte[] l3LastIPv6Bytes = Arrays.copyOfRange(l3.getAddress().getAddress(), 12, 16);
+        assertTrue(Arrays.equals(ipv4Bytes, l2FirstIPv6Bytes));
+        assertTrue(Arrays.equals(ipv4Bytes, l3LastIPv6Bytes));
+
+        assertLinkAddressesNotEqual(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        assertLinkAddressesNotEqual(l1, l3);
+        assertIsNotSameAddressAs(l1, l3);
+
+        // Because we use InetAddress, an IPv4 address is equal to its IPv4-mapped address.
+        // TODO: Investigate fixing this.
+        String addressString = V4 + "/24";
+        l1 = new LinkAddress(addressString);
+        l2 = new LinkAddress("::ffff:" + addressString);
+        assertLinkAddressesEqual(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+    }
+
+    public void testHashCode() {
+        LinkAddress l;
+
+        l = new LinkAddress(V4_ADDRESS, 23);
+        assertEquals(-982787, l.hashCode());
+
+        l = new LinkAddress(V4_ADDRESS, 23, 0, RT_SCOPE_HOST);
+        assertEquals(-971865, l.hashCode());
+
+        l = new LinkAddress(V4_ADDRESS, 27);
+        assertEquals(-982743, l.hashCode());
+
+        l = new LinkAddress(V6_ADDRESS, 64);
+        assertEquals(1076522926, l.hashCode());
+
+        l = new LinkAddress(V6_ADDRESS, 128);
+        assertEquals(1076523630, l.hashCode());
+
+        l = new LinkAddress(V6_ADDRESS, 128, IFA_F_TENTATIVE, RT_SCOPE_UNIVERSE);
+        assertEquals(1076524846, l.hashCode());
+    }
+
+    private LinkAddress passThroughParcel(LinkAddress l) {
+        Parcel p = Parcel.obtain();
+        LinkAddress l2 = null;
+        try {
+            l.writeToParcel(p, 0);
+            p.setDataPosition(0);
+            l2 = LinkAddress.CREATOR.createFromParcel(p);
+        } finally {
+            p.recycle();
+        }
+        assertNotNull(l2);
+        return l2;
+    }
+
+    private void assertParcelingIsLossless(LinkAddress l) {
+      LinkAddress l2 = passThroughParcel(l);
+      assertEquals(l, l2);
+    }
+
+    public void testParceling() {
+        LinkAddress l;
+
+        l = new LinkAddress(V6_ADDRESS, 64, 123, 456);
+        assertParcelingIsLossless(l);
+
+        l = new LinkAddress(V4 + "/28", IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertParcelingIsLossless(l);
+    }
+}
diff --git a/core/tests/coretests/src/android/net/LinkPropertiesTest.java b/core/tests/coretests/src/android/net/LinkPropertiesTest.java
new file mode 100644
index 0000000..e649baa
--- /dev/null
+++ b/core/tests/coretests/src/android/net/LinkPropertiesTest.java
@@ -0,0 +1,440 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import android.net.LinkProperties;
+import android.net.RouteInfo;
+import android.system.OsConstants;
+import android.test.suitebuilder.annotation.SmallTest;
+import junit.framework.TestCase;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+
+public class LinkPropertiesTest extends TestCase {
+    private static InetAddress ADDRV4 = NetworkUtils.numericToInetAddress("75.208.6.1");
+    private static InetAddress ADDRV6 = NetworkUtils.numericToInetAddress(
+            "2001:0db8:85a3:0000:0000:8a2e:0370:7334");
+    private static InetAddress DNS1 = NetworkUtils.numericToInetAddress("75.208.7.1");
+    private static InetAddress DNS2 = NetworkUtils.numericToInetAddress("69.78.7.1");
+    private static InetAddress GATEWAY1 = NetworkUtils.numericToInetAddress("75.208.8.1");
+    private static InetAddress GATEWAY2 = NetworkUtils.numericToInetAddress("69.78.8.1");
+    private static String NAME = "qmi0";
+    private static int MTU = 1500;
+
+    private static LinkAddress LINKADDRV4 = new LinkAddress(ADDRV4, 32);
+    private static LinkAddress LINKADDRV6 = new LinkAddress(ADDRV6, 128);
+
+    public void assertLinkPropertiesEqual(LinkProperties source, LinkProperties target) {
+        // Check implementation of equals(), element by element.
+        assertTrue(source.isIdenticalInterfaceName(target));
+        assertTrue(target.isIdenticalInterfaceName(source));
+
+        assertTrue(source.isIdenticalAddresses(target));
+        assertTrue(target.isIdenticalAddresses(source));
+
+        assertTrue(source.isIdenticalDnses(target));
+        assertTrue(target.isIdenticalDnses(source));
+
+        assertTrue(source.isIdenticalRoutes(target));
+        assertTrue(target.isIdenticalRoutes(source));
+
+        assertTrue(source.isIdenticalHttpProxy(target));
+        assertTrue(target.isIdenticalHttpProxy(source));
+
+        assertTrue(source.isIdenticalStackedLinks(target));
+        assertTrue(target.isIdenticalStackedLinks(source));
+
+        assertTrue(source.isIdenticalMtu(target));
+        assertTrue(target.isIdenticalMtu(source));
+
+        // Check result of equals().
+        assertTrue(source.equals(target));
+        assertTrue(target.equals(source));
+
+        // Check hashCode.
+        assertEquals(source.hashCode(), target.hashCode());
+    }
+
+    @SmallTest
+    public void testEqualsNull() {
+        LinkProperties source = new LinkProperties();
+        LinkProperties target = new LinkProperties();
+
+        assertFalse(source == target);
+        assertLinkPropertiesEqual(source, target);
+    }
+
+    @SmallTest
+    public void testEqualsSameOrder() {
+        try {
+            LinkProperties source = new LinkProperties();
+            source.setInterfaceName(NAME);
+            // set 2 link addresses
+            source.addLinkAddress(LINKADDRV4);
+            source.addLinkAddress(LINKADDRV6);
+            // set 2 dnses
+            source.addDnsServer(DNS1);
+            source.addDnsServer(DNS2);
+            // set 2 gateways
+            source.addRoute(new RouteInfo(GATEWAY1));
+            source.addRoute(new RouteInfo(GATEWAY2));
+            source.setMtu(MTU);
+
+            LinkProperties target = new LinkProperties();
+
+            // All fields are same
+            target.setInterfaceName(NAME);
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            target.addDnsServer(DNS1);
+            target.addDnsServer(DNS2);
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.setMtu(MTU);
+
+            assertLinkPropertiesEqual(source, target);
+
+            target.clear();
+            // change Interface Name
+            target.setInterfaceName("qmi1");
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            target.addDnsServer(DNS1);
+            target.addDnsServer(DNS2);
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.setMtu(MTU);
+            assertFalse(source.equals(target));
+
+            target.clear();
+            target.setInterfaceName(NAME);
+            // change link addresses
+            target.addLinkAddress(new LinkAddress(
+                    NetworkUtils.numericToInetAddress("75.208.6.2"), 32));
+            target.addLinkAddress(LINKADDRV6);
+            target.addDnsServer(DNS1);
+            target.addDnsServer(DNS2);
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.setMtu(MTU);
+            assertFalse(source.equals(target));
+
+            target.clear();
+            target.setInterfaceName(NAME);
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            // change dnses
+            target.addDnsServer(NetworkUtils.numericToInetAddress("75.208.7.2"));
+            target.addDnsServer(DNS2);
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.setMtu(MTU);
+            assertFalse(source.equals(target));
+
+            target.clear();
+            target.setInterfaceName(NAME);
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            target.addDnsServer(DNS1);
+            target.addDnsServer(DNS2);
+            // change gateway
+            target.addRoute(new RouteInfo(NetworkUtils.numericToInetAddress("75.208.8.2")));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.setMtu(MTU);
+            assertFalse(source.equals(target));
+
+            target.clear();
+            target.setInterfaceName(NAME);
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            target.addDnsServer(DNS1);
+            target.addDnsServer(DNS2);
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.addRoute(new RouteInfo(GATEWAY2));
+            // change mtu
+            target.setMtu(1440);
+            assertFalse(source.equals(target));
+
+        } catch (Exception e) {
+            throw new RuntimeException(e.toString());
+            //fail();
+        }
+    }
+
+    @SmallTest
+    public void testEqualsDifferentOrder() {
+        try {
+            LinkProperties source = new LinkProperties();
+            source.setInterfaceName(NAME);
+            // set 2 link addresses
+            source.addLinkAddress(LINKADDRV4);
+            source.addLinkAddress(LINKADDRV6);
+            // set 2 dnses
+            source.addDnsServer(DNS1);
+            source.addDnsServer(DNS2);
+            // set 2 gateways
+            source.addRoute(new RouteInfo(GATEWAY1));
+            source.addRoute(new RouteInfo(GATEWAY2));
+            source.setMtu(MTU);
+
+            LinkProperties target = new LinkProperties();
+            // Exchange order
+            target.setInterfaceName(NAME);
+            target.addLinkAddress(LINKADDRV6);
+            target.addLinkAddress(LINKADDRV4);
+            target.addDnsServer(DNS2);
+            target.addDnsServer(DNS1);
+            target.addRoute(new RouteInfo(GATEWAY2));
+            target.addRoute(new RouteInfo(GATEWAY1));
+            target.setMtu(MTU);
+
+            assertLinkPropertiesEqual(source, target);
+        } catch (Exception e) {
+            fail();
+        }
+    }
+
+    @SmallTest
+    public void testEqualsDuplicated() {
+        try {
+            LinkProperties source = new LinkProperties();
+            // set 3 link addresses, eg, [A, A, B]
+            source.addLinkAddress(LINKADDRV4);
+            source.addLinkAddress(LINKADDRV4);
+            source.addLinkAddress(LINKADDRV6);
+
+            LinkProperties target = new LinkProperties();
+            // set 3 link addresses, eg, [A, B, B]
+            target.addLinkAddress(LINKADDRV4);
+            target.addLinkAddress(LINKADDRV6);
+            target.addLinkAddress(LINKADDRV6);
+
+            assertLinkPropertiesEqual(source, target);
+        } catch (Exception e) {
+            fail();
+        }
+    }
+
+    private void assertAllRoutesHaveInterface(String iface, LinkProperties lp) {
+        for (RouteInfo r : lp.getRoutes()) {
+            assertEquals(iface, r.getInterface());
+        }
+    }
+
+    @SmallTest
+    public void testRouteInterfaces() {
+        LinkAddress prefix = new LinkAddress(
+            NetworkUtils.numericToInetAddress("2001:db8::"), 32);
+        InetAddress address = ADDRV6;
+
+        // Add a route with no interface to a LinkProperties with no interface. No errors.
+        LinkProperties lp = new LinkProperties();
+        RouteInfo r = new RouteInfo(prefix, address, null);
+        lp.addRoute(r);
+        assertEquals(1, lp.getRoutes().size());
+        assertAllRoutesHaveInterface(null, lp);
+
+        // Add a route with an interface. Except an exception.
+        r = new RouteInfo(prefix, address, "wlan0");
+        try {
+          lp.addRoute(r);
+          fail("Adding wlan0 route to LP with no interface, expect exception");
+        } catch (IllegalArgumentException expected) {}
+
+        // Change the interface name. All the routes should change their interface name too.
+        lp.setInterfaceName("rmnet0");
+        assertAllRoutesHaveInterface("rmnet0", lp);
+
+        // Now add a route with the wrong interface. This causes an exception too.
+        try {
+          lp.addRoute(r);
+          fail("Adding wlan0 route to rmnet0 LP, expect exception");
+        } catch (IllegalArgumentException expected) {}
+
+        // If the interface name matches, the route is added.
+        lp.setInterfaceName("wlan0");
+        lp.addRoute(r);
+        assertEquals(2, lp.getRoutes().size());
+        assertAllRoutesHaveInterface("wlan0", lp);
+
+        // Routes with null interfaces are converted to wlan0.
+        r = RouteInfo.makeHostRoute(ADDRV6, null);
+        lp.addRoute(r);
+        assertEquals(3, lp.getRoutes().size());
+        assertAllRoutesHaveInterface("wlan0", lp);
+
+        // Check comparisons work.
+        LinkProperties lp2 = new LinkProperties(lp);
+        assertAllRoutesHaveInterface("wlan0", lp);
+        assertEquals(0, lp.compareAllRoutes(lp2).added.size());
+        assertEquals(0, lp.compareAllRoutes(lp2).removed.size());
+
+        lp2.setInterfaceName("p2p0");
+        assertAllRoutesHaveInterface("p2p0", lp2);
+        assertEquals(3, lp.compareAllRoutes(lp2).added.size());
+        assertEquals(3, lp.compareAllRoutes(lp2).removed.size());
+    }
+
+    @SmallTest
+    public void testStackedInterfaces() {
+        LinkProperties rmnet0 = new LinkProperties();
+        rmnet0.setInterfaceName("rmnet0");
+        rmnet0.addLinkAddress(LINKADDRV6);
+
+        LinkProperties clat4 = new LinkProperties();
+        clat4.setInterfaceName("clat4");
+        clat4.addLinkAddress(LINKADDRV4);
+
+        assertEquals(0, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllAddresses().size());
+        assertEquals(1, rmnet0.getAllLinkAddresses().size());
+
+        rmnet0.addStackedLink(clat4);
+        assertEquals(1, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllAddresses().size());
+        assertEquals(2, rmnet0.getAllLinkAddresses().size());
+
+        rmnet0.addStackedLink(clat4);
+        assertEquals(1, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllAddresses().size());
+        assertEquals(2, rmnet0.getAllLinkAddresses().size());
+
+        assertEquals(0, clat4.getStackedLinks().size());
+
+        // Modify an item in the returned collection to see what happens.
+        for (LinkProperties link : rmnet0.getStackedLinks()) {
+            if (link.getInterfaceName().equals("clat4")) {
+               link.setInterfaceName("newname");
+            }
+        }
+        for (LinkProperties link : rmnet0.getStackedLinks()) {
+            assertFalse("newname".equals(link.getInterfaceName()));
+        }
+
+        assertTrue(rmnet0.removeStackedLink(clat4));
+        assertEquals(0, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllAddresses().size());
+        assertEquals(1, rmnet0.getAllLinkAddresses().size());
+
+        assertFalse(rmnet0.removeStackedLink(clat4));
+    }
+
+    private LinkAddress getFirstLinkAddress(LinkProperties lp) {
+        return lp.getLinkAddresses().iterator().next();
+    }
+
+    @SmallTest
+    public void testAddressMethods() {
+        LinkProperties lp = new LinkProperties();
+
+        // No addresses.
+        assertFalse(lp.hasIPv4Address());
+        assertFalse(lp.hasIPv6Address());
+
+        // Addresses on stacked links don't count.
+        LinkProperties stacked = new LinkProperties();
+        stacked.setInterfaceName("stacked");
+        lp.addStackedLink(stacked);
+        stacked.addLinkAddress(LINKADDRV4);
+        stacked.addLinkAddress(LINKADDRV6);
+        assertTrue(stacked.hasIPv4Address());
+        assertTrue(stacked.hasIPv6Address());
+        assertFalse(lp.hasIPv4Address());
+        assertFalse(lp.hasIPv6Address());
+        lp.removeStackedLink(stacked);
+        assertFalse(lp.hasIPv4Address());
+        assertFalse(lp.hasIPv6Address());
+
+        // Addresses on the base link.
+        // Check the return values of hasIPvXAddress and ensure the add/remove methods return true
+        // iff something changes.
+        assertEquals(0, lp.getLinkAddresses().size());
+        assertTrue(lp.addLinkAddress(LINKADDRV6));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertFalse(lp.hasIPv4Address());
+        assertTrue(lp.hasIPv6Address());
+
+        assertTrue(lp.removeLinkAddress(LINKADDRV6));
+        assertEquals(0, lp.getLinkAddresses().size());
+        assertTrue(lp.addLinkAddress(LINKADDRV4));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIPv4Address());
+        assertFalse(lp.hasIPv6Address());
+
+        assertTrue(lp.addLinkAddress(LINKADDRV6));
+        assertEquals(2, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIPv4Address());
+        assertTrue(lp.hasIPv6Address());
+
+        // Adding an address twice has no effect.
+        // Removing an address that's not present has no effect.
+        assertFalse(lp.addLinkAddress(LINKADDRV4));
+        assertEquals(2, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIPv4Address());
+        assertTrue(lp.removeLinkAddress(LINKADDRV4));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertFalse(lp.hasIPv4Address());
+        assertFalse(lp.removeLinkAddress(LINKADDRV4));
+        assertEquals(1, lp.getLinkAddresses().size());
+
+        // Adding an address that's already present but with different properties causes the
+        // existing address to be updated and returns true.
+        // Start with only LINKADDRV6.
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertEquals(LINKADDRV6, getFirstLinkAddress(lp));
+
+        // Create a LinkAddress object for the same address, but with different flags.
+        LinkAddress deprecated = new LinkAddress(ADDRV6, 128,
+                OsConstants.IFA_F_DEPRECATED, OsConstants.RT_SCOPE_UNIVERSE);
+        assertTrue(deprecated.isSameAddressAs(LINKADDRV6));
+        assertFalse(deprecated.equals(LINKADDRV6));
+
+        // Check that adding it updates the existing address instead of adding a new one.
+        assertTrue(lp.addLinkAddress(deprecated));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertEquals(deprecated, getFirstLinkAddress(lp));
+        assertFalse(LINKADDRV6.equals(getFirstLinkAddress(lp)));
+
+        // Removing LINKADDRV6 removes deprecated, because removing addresses ignores properties.
+        assertTrue(lp.removeLinkAddress(LINKADDRV6));
+        assertEquals(0, lp.getLinkAddresses().size());
+    }
+
+    @SmallTest
+    public void testSetLinkAddresses() {
+        LinkProperties lp = new LinkProperties();
+        lp.addLinkAddress(LINKADDRV4);
+        lp.addLinkAddress(LINKADDRV6);
+
+        LinkProperties lp2 = new LinkProperties();
+        lp2.addLinkAddress(LINKADDRV6);
+
+        assertFalse(lp.equals(lp2));
+
+        lp2.setLinkAddresses(lp.getLinkAddresses());
+        assertTrue(lp.equals(lp));
+    }
+}
diff --git a/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java b/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java
new file mode 100644
index 0000000..b181122
--- /dev/null
+++ b/core/tests/coretests/src/android/net/NetworkStatsHistoryTest.java
@@ -0,0 +1,521 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.NetworkStatsHistory.FIELD_ALL;
+import static android.net.NetworkStatsHistory.FIELD_OPERATIONS;
+import static android.net.NetworkStatsHistory.FIELD_RX_BYTES;
+import static android.net.NetworkStatsHistory.FIELD_RX_PACKETS;
+import static android.net.NetworkStatsHistory.FIELD_TX_BYTES;
+import static android.net.NetworkStatsHistory.DataStreamUtils.readVarLong;
+import static android.net.NetworkStatsHistory.DataStreamUtils.writeVarLong;
+import static android.net.NetworkStatsHistory.Entry.UNKNOWN;
+import static android.net.TrafficStats.GB_IN_BYTES;
+import static android.net.TrafficStats.MB_IN_BYTES;
+import static android.text.format.DateUtils.DAY_IN_MILLIS;
+import static android.text.format.DateUtils.HOUR_IN_MILLIS;
+import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
+import static android.text.format.DateUtils.SECOND_IN_MILLIS;
+import static android.text.format.DateUtils.WEEK_IN_MILLIS;
+import static android.text.format.DateUtils.YEAR_IN_MILLIS;
+
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.test.suitebuilder.annotation.Suppress;
+import android.util.Log;
+
+import com.android.frameworks.coretests.R;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.util.Random;
+
+@SmallTest
+public class NetworkStatsHistoryTest extends AndroidTestCase {
+    private static final String TAG = "NetworkStatsHistoryTest";
+
+    private static final long TEST_START = 1194220800000L;
+
+    private NetworkStatsHistory stats;
+
+    @Override
+    protected void tearDown() throws Exception {
+        super.tearDown();
+        if (stats != null) {
+            assertConsistent(stats);
+        }
+    }
+
+    public void testReadOriginalVersion() throws Exception {
+        final DataInputStream in = new DataInputStream(
+                getContext().getResources().openRawResource(R.raw.history_v1));
+
+        NetworkStatsHistory.Entry entry = null;
+        try {
+            final NetworkStatsHistory history = new NetworkStatsHistory(in);
+            assertEquals(15 * SECOND_IN_MILLIS, history.getBucketDuration());
+
+            entry = history.getValues(0, entry);
+            assertEquals(29143L, entry.rxBytes);
+            assertEquals(6223L, entry.txBytes);
+
+            entry = history.getValues(history.size() - 1, entry);
+            assertEquals(1476L, entry.rxBytes);
+            assertEquals(838L, entry.txBytes);
+
+            entry = history.getValues(Long.MIN_VALUE, Long.MAX_VALUE, entry);
+            assertEquals(332401L, entry.rxBytes);
+            assertEquals(64314L, entry.txBytes);
+
+        } finally {
+            in.close();
+        }
+    }
+
+    public void testRecordSingleBucket() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        // record data into narrow window to get single bucket
+        stats.recordData(TEST_START, TEST_START + SECOND_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+
+        assertEquals(1, stats.size());
+        assertValues(stats, 0, SECOND_IN_MILLIS, 1024L, 10L, 2048L, 20L, 2L);
+    }
+
+    public void testRecordEqualBuckets() throws Exception {
+        final long bucketDuration = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(bucketDuration);
+
+        // split equally across two buckets
+        final long recordStart = TEST_START + (bucketDuration / 2);
+        stats.recordData(recordStart, recordStart + bucketDuration,
+                new NetworkStats.Entry(1024L, 10L, 128L, 2L, 2L));
+
+        assertEquals(2, stats.size());
+        assertValues(stats, 0, HOUR_IN_MILLIS / 2, 512L, 5L, 64L, 1L, 1L);
+        assertValues(stats, 1, HOUR_IN_MILLIS / 2, 512L, 5L, 64L, 1L, 1L);
+    }
+
+    public void testRecordTouchingBuckets() throws Exception {
+        final long BUCKET_SIZE = 15 * MINUTE_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        // split almost completely into middle bucket, but with a few minutes
+        // overlap into neighboring buckets. total record is 20 minutes.
+        final long recordStart = (TEST_START + BUCKET_SIZE) - MINUTE_IN_MILLIS;
+        final long recordEnd = (TEST_START + (BUCKET_SIZE * 2)) + (MINUTE_IN_MILLIS * 4);
+        stats.recordData(recordStart, recordEnd,
+                new NetworkStats.Entry(1000L, 2000L, 5000L, 10000L, 100L));
+
+        assertEquals(3, stats.size());
+        // first bucket should have (1/20 of value)
+        assertValues(stats, 0, MINUTE_IN_MILLIS, 50L, 100L, 250L, 500L, 5L);
+        // second bucket should have (15/20 of value)
+        assertValues(stats, 1, 15 * MINUTE_IN_MILLIS, 750L, 1500L, 3750L, 7500L, 75L);
+        // final bucket should have (4/20 of value)
+        assertValues(stats, 2, 4 * MINUTE_IN_MILLIS, 200L, 400L, 1000L, 2000L, 20L);
+    }
+
+    public void testRecordGapBuckets() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        // record some data today and next week with large gap
+        final long firstStart = TEST_START;
+        final long lastStart = TEST_START + WEEK_IN_MILLIS;
+        stats.recordData(firstStart, firstStart + SECOND_IN_MILLIS,
+                new NetworkStats.Entry(128L, 2L, 256L, 4L, 1L));
+        stats.recordData(lastStart, lastStart + SECOND_IN_MILLIS,
+                new NetworkStats.Entry(64L, 1L, 512L, 8L, 2L));
+
+        // we should have two buckets, far apart from each other
+        assertEquals(2, stats.size());
+        assertValues(stats, 0, SECOND_IN_MILLIS, 128L, 2L, 256L, 4L, 1L);
+        assertValues(stats, 1, SECOND_IN_MILLIS, 64L, 1L, 512L, 8L, 2L);
+
+        // now record something in middle, spread across two buckets
+        final long middleStart = TEST_START + DAY_IN_MILLIS;
+        final long middleEnd = middleStart + (HOUR_IN_MILLIS * 2);
+        stats.recordData(middleStart, middleEnd,
+                new NetworkStats.Entry(2048L, 4L, 2048L, 4L, 2L));
+
+        // now should have four buckets, with new record in middle two buckets
+        assertEquals(4, stats.size());
+        assertValues(stats, 0, SECOND_IN_MILLIS, 128L, 2L, 256L, 4L, 1L);
+        assertValues(stats, 1, HOUR_IN_MILLIS, 1024L, 2L, 1024L, 2L, 1L);
+        assertValues(stats, 2, HOUR_IN_MILLIS, 1024L, 2L, 1024L, 2L, 1L);
+        assertValues(stats, 3, SECOND_IN_MILLIS, 64L, 1L, 512L, 8L, 2L);
+    }
+
+    public void testRecordOverlapBuckets() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        // record some data in one bucket, and another overlapping buckets
+        stats.recordData(TEST_START, TEST_START + SECOND_IN_MILLIS,
+                new NetworkStats.Entry(256L, 2L, 256L, 2L, 1L));
+        final long midStart = TEST_START + (HOUR_IN_MILLIS / 2);
+        stats.recordData(midStart, midStart + HOUR_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 1024L, 10L, 10L));
+
+        // should have two buckets, with some data mixed together
+        assertEquals(2, stats.size());
+        assertValues(stats, 0, SECOND_IN_MILLIS + (HOUR_IN_MILLIS / 2), 768L, 7L, 768L, 7L, 6L);
+        assertValues(stats, 1, (HOUR_IN_MILLIS / 2), 512L, 5L, 512L, 5L, 5L);
+    }
+
+    public void testRecordEntireGapIdentical() throws Exception {
+        // first, create two separate histories far apart
+        final NetworkStatsHistory stats1 = new NetworkStatsHistory(HOUR_IN_MILLIS);
+        stats1.recordData(TEST_START, TEST_START + 2 * HOUR_IN_MILLIS, 2000L, 1000L);
+
+        final long TEST_START_2 = TEST_START + DAY_IN_MILLIS;
+        final NetworkStatsHistory stats2 = new NetworkStatsHistory(HOUR_IN_MILLIS);
+        stats2.recordData(TEST_START_2, TEST_START_2 + 2 * HOUR_IN_MILLIS, 1000L, 500L);
+
+        // combine together with identical bucket size
+        stats = new NetworkStatsHistory(HOUR_IN_MILLIS);
+        stats.recordEntireHistory(stats1);
+        stats.recordEntireHistory(stats2);
+
+        // first verify that totals match up
+        assertValues(stats, TEST_START - WEEK_IN_MILLIS, TEST_START + WEEK_IN_MILLIS, 3000L, 1500L);
+
+        // now inspect internal buckets
+        assertValues(stats, 0, 1000L, 500L);
+        assertValues(stats, 1, 1000L, 500L);
+        assertValues(stats, 2, 500L, 250L);
+        assertValues(stats, 3, 500L, 250L);
+    }
+
+    public void testRecordEntireOverlapVaryingBuckets() throws Exception {
+        // create history just over hour bucket boundary
+        final NetworkStatsHistory stats1 = new NetworkStatsHistory(HOUR_IN_MILLIS);
+        stats1.recordData(TEST_START, TEST_START + MINUTE_IN_MILLIS * 60, 600L, 600L);
+
+        final long TEST_START_2 = TEST_START + MINUTE_IN_MILLIS;
+        final NetworkStatsHistory stats2 = new NetworkStatsHistory(MINUTE_IN_MILLIS);
+        stats2.recordData(TEST_START_2, TEST_START_2 + MINUTE_IN_MILLIS * 5, 50L, 50L);
+
+        // combine together with minute bucket size
+        stats = new NetworkStatsHistory(MINUTE_IN_MILLIS);
+        stats.recordEntireHistory(stats1);
+        stats.recordEntireHistory(stats2);
+
+        // first verify that totals match up
+        assertValues(stats, TEST_START - WEEK_IN_MILLIS, TEST_START + WEEK_IN_MILLIS, 650L, 650L);
+
+        // now inspect internal buckets
+        assertValues(stats, 0, 10L, 10L);
+        assertValues(stats, 1, 20L, 20L);
+        assertValues(stats, 2, 20L, 20L);
+        assertValues(stats, 3, 20L, 20L);
+        assertValues(stats, 4, 20L, 20L);
+        assertValues(stats, 5, 20L, 20L);
+        assertValues(stats, 6, 10L, 10L);
+
+        // now combine using 15min buckets
+        stats = new NetworkStatsHistory(HOUR_IN_MILLIS / 4);
+        stats.recordEntireHistory(stats1);
+        stats.recordEntireHistory(stats2);
+
+        // first verify that totals match up
+        assertValues(stats, TEST_START - WEEK_IN_MILLIS, TEST_START + WEEK_IN_MILLIS, 650L, 650L);
+
+        // and inspect buckets
+        assertValues(stats, 0, 200L, 200L);
+        assertValues(stats, 1, 150L, 150L);
+        assertValues(stats, 2, 150L, 150L);
+        assertValues(stats, 3, 150L, 150L);
+    }
+
+    public void testRemove() throws Exception {
+        stats = new NetworkStatsHistory(HOUR_IN_MILLIS);
+
+        // record some data across 24 buckets
+        stats.recordData(TEST_START, TEST_START + DAY_IN_MILLIS, 24L, 24L);
+        assertEquals(24, stats.size());
+
+        // try removing invalid data; should be no change
+        stats.removeBucketsBefore(0 - DAY_IN_MILLIS);
+        assertEquals(24, stats.size());
+
+        // try removing far before buckets; should be no change
+        stats.removeBucketsBefore(TEST_START - YEAR_IN_MILLIS);
+        assertEquals(24, stats.size());
+
+        // try removing just moments into first bucket; should be no change
+        // since that bucket contains data beyond the cutoff
+        stats.removeBucketsBefore(TEST_START + SECOND_IN_MILLIS);
+        assertEquals(24, stats.size());
+
+        // try removing single bucket
+        stats.removeBucketsBefore(TEST_START + HOUR_IN_MILLIS);
+        assertEquals(23, stats.size());
+
+        // try removing multiple buckets
+        stats.removeBucketsBefore(TEST_START + (4 * HOUR_IN_MILLIS));
+        assertEquals(20, stats.size());
+
+        // try removing all buckets
+        stats.removeBucketsBefore(TEST_START + YEAR_IN_MILLIS);
+        assertEquals(0, stats.size());
+    }
+
+    public void testTotalData() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        // record uniform data across day
+        stats.recordData(TEST_START, TEST_START + DAY_IN_MILLIS, 2400L, 4800L);
+
+        // verify that total outside range is 0
+        assertValues(stats, TEST_START - WEEK_IN_MILLIS, TEST_START - DAY_IN_MILLIS, 0L, 0L);
+
+        // verify total in first hour
+        assertValues(stats, TEST_START, TEST_START + HOUR_IN_MILLIS, 100L, 200L);
+
+        // verify total across 1.5 hours
+        assertValues(stats, TEST_START, TEST_START + (long) (1.5 * HOUR_IN_MILLIS), 150L, 300L);
+
+        // verify total beyond end
+        assertValues(stats, TEST_START + (23 * HOUR_IN_MILLIS), TEST_START + WEEK_IN_MILLIS, 100L, 200L);
+
+        // verify everything total
+        assertValues(stats, TEST_START - WEEK_IN_MILLIS, TEST_START + WEEK_IN_MILLIS, 2400L, 4800L);
+
+    }
+
+    @Suppress
+    public void testFuzzing() throws Exception {
+        try {
+            // fuzzing with random events, looking for crashes
+            final NetworkStats.Entry entry = new NetworkStats.Entry();
+            final Random r = new Random();
+            for (int i = 0; i < 500; i++) {
+                stats = new NetworkStatsHistory(r.nextLong());
+                for (int j = 0; j < 10000; j++) {
+                    if (r.nextBoolean()) {
+                        // add range
+                        final long start = r.nextLong();
+                        final long end = start + r.nextInt();
+                        entry.rxBytes = nextPositiveLong(r);
+                        entry.rxPackets = nextPositiveLong(r);
+                        entry.txBytes = nextPositiveLong(r);
+                        entry.txPackets = nextPositiveLong(r);
+                        entry.operations = nextPositiveLong(r);
+                        stats.recordData(start, end, entry);
+                    } else {
+                        // trim something
+                        stats.removeBucketsBefore(r.nextLong());
+                    }
+                }
+                assertConsistent(stats);
+            }
+        } catch (Throwable e) {
+            Log.e(TAG, String.valueOf(stats));
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static long nextPositiveLong(Random r) {
+        final long value = r.nextLong();
+        return value < 0 ? -value : value;
+    }
+
+    public void testIgnoreFields() throws Exception {
+        final NetworkStatsHistory history = new NetworkStatsHistory(
+                MINUTE_IN_MILLIS, 0, FIELD_RX_BYTES | FIELD_TX_BYTES);
+
+        history.recordData(0, MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 4L));
+        history.recordData(0, 2 * MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(2L, 2L, 2L, 2L, 2L));
+
+        assertFullValues(history, UNKNOWN, 1026L, UNKNOWN, 2050L, UNKNOWN, UNKNOWN);
+    }
+
+    public void testIgnoreFieldsRecordIn() throws Exception {
+        final NetworkStatsHistory full = new NetworkStatsHistory(MINUTE_IN_MILLIS, 0, FIELD_ALL);
+        final NetworkStatsHistory partial = new NetworkStatsHistory(
+                MINUTE_IN_MILLIS, 0, FIELD_RX_PACKETS | FIELD_OPERATIONS);
+
+        full.recordData(0, MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 4L));
+        partial.recordEntireHistory(full);
+
+        assertFullValues(partial, UNKNOWN, UNKNOWN, 10L, UNKNOWN, UNKNOWN, 4L);
+    }
+
+    public void testIgnoreFieldsRecordOut() throws Exception {
+        final NetworkStatsHistory full = new NetworkStatsHistory(MINUTE_IN_MILLIS, 0, FIELD_ALL);
+        final NetworkStatsHistory partial = new NetworkStatsHistory(
+                MINUTE_IN_MILLIS, 0, FIELD_RX_PACKETS | FIELD_OPERATIONS);
+
+        partial.recordData(0, MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 4L));
+        full.recordEntireHistory(partial);
+
+        assertFullValues(full, MINUTE_IN_MILLIS, 0L, 10L, 0L, 0L, 4L);
+    }
+
+    public void testSerialize() throws Exception {
+        final NetworkStatsHistory before = new NetworkStatsHistory(MINUTE_IN_MILLIS, 40, FIELD_ALL);
+        before.recordData(0, 4 * MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 4L));
+        before.recordData(DAY_IN_MILLIS, DAY_IN_MILLIS + MINUTE_IN_MILLIS,
+                new NetworkStats.Entry(10L, 20L, 30L, 40L, 50L));
+
+        final ByteArrayOutputStream out = new ByteArrayOutputStream();
+        before.writeToStream(new DataOutputStream(out));
+        out.close();
+
+        final ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+        final NetworkStatsHistory after = new NetworkStatsHistory(new DataInputStream(in));
+
+        // must have identical totals before and after
+        assertFullValues(before, 5 * MINUTE_IN_MILLIS, 1034L, 30L, 2078L, 60L, 54L);
+        assertFullValues(after, 5 * MINUTE_IN_MILLIS, 1034L, 30L, 2078L, 60L, 54L);
+    }
+
+    public void testVarLong() throws Exception {
+        assertEquals(0L, performVarLong(0L));
+        assertEquals(-1L, performVarLong(-1L));
+        assertEquals(1024L, performVarLong(1024L));
+        assertEquals(-1024L, performVarLong(-1024L));
+        assertEquals(40 * MB_IN_BYTES, performVarLong(40 * MB_IN_BYTES));
+        assertEquals(512 * GB_IN_BYTES, performVarLong(512 * GB_IN_BYTES));
+        assertEquals(Long.MIN_VALUE, performVarLong(Long.MIN_VALUE));
+        assertEquals(Long.MAX_VALUE, performVarLong(Long.MAX_VALUE));
+        assertEquals(Long.MIN_VALUE + 40, performVarLong(Long.MIN_VALUE + 40));
+        assertEquals(Long.MAX_VALUE - 40, performVarLong(Long.MAX_VALUE - 40));
+    }
+
+    public void testIndexBeforeAfter() throws Exception {
+        final long BUCKET_SIZE = HOUR_IN_MILLIS;
+        stats = new NetworkStatsHistory(BUCKET_SIZE);
+
+        final long FIRST_START = TEST_START;
+        final long FIRST_END = FIRST_START + (2 * HOUR_IN_MILLIS);
+        final long SECOND_START = TEST_START + WEEK_IN_MILLIS;
+        final long SECOND_END = SECOND_START + HOUR_IN_MILLIS;
+        final long THIRD_START = TEST_START + (2 * WEEK_IN_MILLIS);
+        final long THIRD_END = THIRD_START + (2 * HOUR_IN_MILLIS);
+
+        stats.recordData(FIRST_START, FIRST_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+        stats.recordData(SECOND_START, SECOND_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+        stats.recordData(THIRD_START, THIRD_END,
+                new NetworkStats.Entry(1024L, 10L, 2048L, 20L, 2L));
+
+        // should have buckets: 2+1+2
+        assertEquals(5, stats.size());
+
+        assertIndexBeforeAfter(stats, 0, 0, Long.MIN_VALUE);
+        assertIndexBeforeAfter(stats, 0, 1, FIRST_START);
+        assertIndexBeforeAfter(stats, 0, 1, FIRST_START + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 0, 2, FIRST_START + HOUR_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 1, 2, FIRST_START + HOUR_IN_MILLIS + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 1, 2, FIRST_END - MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 1, 2, FIRST_END);
+        assertIndexBeforeAfter(stats, 1, 2, FIRST_END + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 1, 2, SECOND_START - MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 1, 3, SECOND_START);
+        assertIndexBeforeAfter(stats, 2, 3, SECOND_END);
+        assertIndexBeforeAfter(stats, 2, 3, SECOND_END + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 2, 3, THIRD_START - MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 2, 4, THIRD_START);
+        assertIndexBeforeAfter(stats, 3, 4, THIRD_START + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 3, 4, THIRD_START + HOUR_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 4, 4, THIRD_END);
+        assertIndexBeforeAfter(stats, 4, 4, THIRD_END + MINUTE_IN_MILLIS);
+        assertIndexBeforeAfter(stats, 4, 4, Long.MAX_VALUE);
+    }
+
+    private static void assertIndexBeforeAfter(
+            NetworkStatsHistory stats, int before, int after, long time) {
+        assertEquals("unexpected before", before, stats.getIndexBefore(time));
+        assertEquals("unexpected after", after, stats.getIndexAfter(time));
+    }
+
+    private static long performVarLong(long before) throws Exception {
+        final ByteArrayOutputStream out = new ByteArrayOutputStream();
+        writeVarLong(new DataOutputStream(out), before);
+
+        final ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+        return readVarLong(new DataInputStream(in));
+    }
+
+    private static void assertConsistent(NetworkStatsHistory stats) {
+        // verify timestamps are monotonic
+        long lastStart = Long.MIN_VALUE;
+        NetworkStatsHistory.Entry entry = null;
+        for (int i = 0; i < stats.size(); i++) {
+            entry = stats.getValues(i, entry);
+            assertTrue(lastStart < entry.bucketStart);
+            lastStart = entry.bucketStart;
+        }
+    }
+
+    private static void assertValues(
+            NetworkStatsHistory stats, int index, long rxBytes, long txBytes) {
+        final NetworkStatsHistory.Entry entry = stats.getValues(index, null);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+    }
+
+    private static void assertValues(
+            NetworkStatsHistory stats, long start, long end, long rxBytes, long txBytes) {
+        final NetworkStatsHistory.Entry entry = stats.getValues(start, end, null);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+    }
+
+    private static void assertValues(NetworkStatsHistory stats, int index, long activeTime,
+            long rxBytes, long rxPackets, long txBytes, long txPackets, long operations) {
+        final NetworkStatsHistory.Entry entry = stats.getValues(index, null);
+        assertEquals("unexpected activeTime", activeTime, entry.activeTime);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+        assertEquals("unexpected operations", operations, entry.operations);
+    }
+
+    private static void assertFullValues(NetworkStatsHistory stats, long activeTime, long rxBytes,
+            long rxPackets, long txBytes, long txPackets, long operations) {
+        assertValues(stats, Long.MIN_VALUE, Long.MAX_VALUE, activeTime, rxBytes, rxPackets, txBytes,
+                txPackets, operations);
+    }
+
+    private static void assertValues(NetworkStatsHistory stats, long start, long end,
+            long activeTime, long rxBytes, long rxPackets, long txBytes, long txPackets,
+            long operations) {
+        final NetworkStatsHistory.Entry entry = stats.getValues(start, end, null);
+        assertEquals("unexpected activeTime", activeTime, entry.activeTime);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+        assertEquals("unexpected operations", operations, entry.operations);
+    }
+}
diff --git a/core/tests/coretests/src/android/net/NetworkStatsTest.java b/core/tests/coretests/src/android/net/NetworkStatsTest.java
new file mode 100644
index 0000000..6331964
--- /dev/null
+++ b/core/tests/coretests/src/android/net/NetworkStatsTest.java
@@ -0,0 +1,337 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.NetworkStats.SET_DEFAULT;
+import static android.net.NetworkStats.SET_FOREGROUND;
+import static android.net.NetworkStats.SET_ALL;
+import static android.net.NetworkStats.IFACE_ALL;
+import static android.net.NetworkStats.TAG_NONE;
+import static android.net.NetworkStats.UID_ALL;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import com.google.android.collect.Sets;
+
+import junit.framework.TestCase;
+
+import java.util.HashSet;
+
+@SmallTest
+public class NetworkStatsTest extends TestCase {
+
+    private static final String TEST_IFACE = "test0";
+    private static final String TEST_IFACE2 = "test2";
+    private static final int TEST_UID = 1001;
+    private static final long TEST_START = 1194220800000L;
+
+    public void testFindIndex() throws Exception {
+        final NetworkStats stats = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 11)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12);
+
+        assertEquals(2, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE));
+        assertEquals(2, stats.findIndex(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE));
+        assertEquals(0, stats.findIndex(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE));
+        assertEquals(-1, stats.findIndex(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE));
+    }
+
+    public void testFindIndexHinted() {
+        final NetworkStats stats = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 11)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 1024L, 8L, 0L, 0L, 10)
+                .addValues(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D, 0L, 0L, 1024L, 8L, 11)
+                .addValues(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 12);
+
+        // verify that we correctly find across regardless of hinting
+        for (int hint = 0; hint < stats.size(); hint++) {
+            assertEquals(0, stats.findIndexHinted(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, hint));
+            assertEquals(1, stats.findIndexHinted(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, hint));
+            assertEquals(2, stats.findIndexHinted(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, hint));
+            assertEquals(3, stats.findIndexHinted(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, hint));
+            assertEquals(4, stats.findIndexHinted(TEST_IFACE2, 101, SET_DEFAULT, 0xF00D, hint));
+            assertEquals(5, stats.findIndexHinted(TEST_IFACE2, 102, SET_DEFAULT, TAG_NONE, hint));
+            assertEquals(-1, stats.findIndexHinted(TEST_IFACE, 6, SET_DEFAULT, TAG_NONE, hint));
+        }
+    }
+
+    public void testAddEntryGrow() throws Exception {
+        final NetworkStats stats = new NetworkStats(TEST_START, 2);
+
+        assertEquals(0, stats.size());
+        assertEquals(2, stats.internalSize());
+
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 2L, 3);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 2L, 2L, 2L, 2L, 4);
+
+        assertEquals(2, stats.size());
+        assertEquals(2, stats.internalSize());
+
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 3L, 30L, 4L, 40L, 7);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 4L, 40L, 4L, 40L, 8);
+        stats.addValues(TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 5L, 50L, 5L, 50L, 10);
+
+        assertEquals(5, stats.size());
+        assertTrue(stats.internalSize() >= 5);
+
+        assertValues(stats, 0, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 2L, 3);
+        assertValues(stats, 1, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 2L, 2L, 2L, 2L, 4);
+        assertValues(stats, 2, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 3L, 30L, 4L, 40L, 7);
+        assertValues(stats, 3, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 4L, 40L, 4L, 40L, 8);
+        assertValues(stats, 4, TEST_IFACE, TEST_UID, SET_DEFAULT, TAG_NONE, 5L, 50L, 5L, 50L, 10);
+    }
+
+    public void testCombineExisting() throws Exception {
+        final NetworkStats stats = new NetworkStats(TEST_START, 10);
+
+        stats.addValues(TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, 512L, 4L, 256L, 2L, 10);
+        stats.addValues(TEST_IFACE, 1001, SET_DEFAULT, 0xff, 128L, 1L, 128L, 1L, 2);
+        stats.combineValues(TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, -128L, -1L, -128L, -1L, -1);
+
+        assertValues(stats, 0, TEST_IFACE, 1001, SET_DEFAULT, TAG_NONE, 384L, 3L, 128L, 1L, 9);
+        assertValues(stats, 1, TEST_IFACE, 1001, SET_DEFAULT, 0xff, 128L, 1L, 128L, 1L, 2);
+
+        // now try combining that should create row
+        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
+        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
+        stats.combineValues(TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 3);
+        assertValues(stats, 2, TEST_IFACE, 5005, SET_DEFAULT, TAG_NONE, 256L, 2L, 256L, 2L, 6);
+    }
+
+    public void testSubtractIdenticalData() throws Exception {
+        final NetworkStats before = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 11)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 12);
+
+        final NetworkStats after = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 11)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 12);
+
+        final NetworkStats result = after.subtract(before);
+
+        // identical data should result in zero delta
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
+    }
+
+    public void testSubtractIdenticalRows() throws Exception {
+        final NetworkStats before = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 11)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 12);
+
+        final NetworkStats after = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1025L, 9L, 2L, 1L, 15)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 3L, 1L, 1028L, 9L, 20);
+
+        final NetworkStats result = after.subtract(before);
+
+        // expect delta between measurements
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1L, 1L, 2L, 1L, 4);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 3L, 1L, 4L, 1L, 8);
+    }
+
+    public void testSubtractNewRows() throws Exception {
+        final NetworkStats before = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 11)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 12);
+
+        final NetworkStats after = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 1024L, 8L, 0L, 0L, 11)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 1024L, 8L, 12)
+                .addValues(TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 20);
+
+        final NetworkStats result = after.subtract(before);
+
+        // its okay to have new rows
+        assertValues(result, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
+        assertValues(result, 1, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0);
+        assertValues(result, 2, TEST_IFACE, 102, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 20);
+    }
+
+    public void testSubtractMissingRows() throws Exception {
+        final NetworkStats before = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, UID_ALL, SET_DEFAULT, TAG_NONE, 1024L, 0L, 0L, 0L, 0)
+                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 2048L, 0L, 0L, 0L, 0);
+
+        final NetworkStats after = new NetworkStats(TEST_START, 1)
+                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 2049L, 2L, 3L, 4L, 0);
+
+        final NetworkStats result = after.subtract(before);
+
+        // should silently drop omitted rows
+        assertEquals(1, result.size());
+        assertValues(result, 0, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 1L, 2L, 3L, 4L, 0);
+        assertEquals(4L, result.getTotalBytes());
+    }
+
+    public void testTotalBytes() throws Exception {
+        final NetworkStats iface = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, UID_ALL, SET_DEFAULT, TAG_NONE, 128L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 256L, 0L, 0L, 0L, 0L);
+        assertEquals(384L, iface.getTotalBytes());
+
+        final NetworkStats uidSet = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+        assertEquals(96L, uidSet.getTotalBytes());
+
+        final NetworkStats uidTag = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 8L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 16L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 8L, 0L, 0L, 0L, 0L);
+        assertEquals(64L, uidTag.getTotalBytes());
+    }
+
+    public void testGroupedByIfaceEmpty() throws Exception {
+        final NetworkStats uidStats = new NetworkStats(TEST_START, 3);
+        final NetworkStats grouped = uidStats.groupedByIface();
+
+        assertEquals(0, uidStats.size());
+        assertEquals(0, grouped.size());
+    }
+
+    public void testGroupedByIfaceAll() throws Exception {
+        final NetworkStats uidStats = new NetworkStats(TEST_START, 3)
+                .addValues(IFACE_ALL, 100, SET_ALL, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
+                .addValues(IFACE_ALL, 101, SET_FOREGROUND, TAG_NONE, 128L, 8L, 0L, 2L, 20L);
+        final NetworkStats grouped = uidStats.groupedByIface();
+
+        assertEquals(2, uidStats.size());
+        assertEquals(1, grouped.size());
+
+        assertValues(grouped, 0, IFACE_ALL, UID_ALL, SET_ALL, TAG_NONE, 256L, 16L, 0L, 4L, 0L);
+    }
+
+    public void testGroupedByIface() throws Exception {
+        final NetworkStats uidStats = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 64L, 4L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+
+        final NetworkStats grouped = uidStats.groupedByIface();
+
+        assertEquals(6, uidStats.size());
+
+        assertEquals(2, grouped.size());
+        assertValues(grouped, 0, TEST_IFACE, UID_ALL, SET_ALL, TAG_NONE, 256L, 16L, 0L, 2L, 0L);
+        assertValues(grouped, 1, TEST_IFACE2, UID_ALL, SET_ALL, TAG_NONE, 1024L, 64L, 0L, 0L, 0L);
+    }
+
+    public void testAddAllValues() {
+        final NetworkStats first = new NetworkStats(TEST_START, 5)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+
+        final NetworkStats second = new NetworkStats(TEST_START, 2)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+
+        first.combineAllValues(second);
+
+        assertEquals(3, first.size());
+        assertValues(first, 0, TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 64L, 0L, 0L, 0L, 0L);
+        assertValues(first, 1, TEST_IFACE, 100, SET_FOREGROUND, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+        assertValues(first, 2, TEST_IFACE2, UID_ALL, SET_DEFAULT, TAG_NONE, 32L, 0L, 0L, 0L, 0L);
+    }
+
+    public void testGetTotal() {
+        final NetworkStats stats = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 64L, 4L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+
+        assertValues(stats.getTotal(null), 1280L, 80L, 0L, 2L, 20L);
+        assertValues(stats.getTotal(null, 100), 1152L, 72L, 0L, 2L, 20L);
+        assertValues(stats.getTotal(null, 101), 128L, 8L, 0L, 0L, 0L);
+
+        final HashSet<String> ifaces = Sets.newHashSet();
+        assertValues(stats.getTotal(null, ifaces), 0L, 0L, 0L, 0L, 0L);
+
+        ifaces.add(TEST_IFACE2);
+        assertValues(stats.getTotal(null, ifaces), 1024L, 64L, 0L, 0L, 0L);
+    }
+
+    public void testWithoutUid() throws Exception {
+        final NetworkStats before = new NetworkStats(TEST_START, 3)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, 0xF00D, 64L, 4L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE2, 100, SET_FOREGROUND, TAG_NONE, 512L, 32L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L)
+                .addValues(TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+
+        final NetworkStats after = before.withoutUids(new int[] { 100 });
+        assertEquals(6, before.size());
+        assertEquals(2, after.size());
+        assertValues(after, 0, TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L);
+        assertValues(after, 1, TEST_IFACE, 101, SET_DEFAULT, 0xF00D, 128L, 8L, 0L, 0L, 0L);
+    }
+
+    public void testClone() throws Exception {
+        final NetworkStats original = new NetworkStats(TEST_START, 5)
+                .addValues(TEST_IFACE, 100, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 2L, 20L)
+                .addValues(TEST_IFACE2, 100, SET_DEFAULT, TAG_NONE, 512L, 32L, 0L, 0L, 0L);
+
+        // make clone and mutate original
+        final NetworkStats clone = original.clone();
+        original.addValues(TEST_IFACE, 101, SET_DEFAULT, TAG_NONE, 128L, 8L, 0L, 0L, 0L);
+
+        assertEquals(3, original.size());
+        assertEquals(2, clone.size());
+
+        assertEquals(128L + 512L + 128L, original.getTotalBytes());
+        assertEquals(128L + 512L, clone.getTotalBytes());
+    }
+
+    private static void assertValues(NetworkStats stats, int index, String iface, int uid, int set,
+            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, long operations) {
+        final NetworkStats.Entry entry = stats.getValues(index, null);
+        assertValues(entry, iface, uid, set, tag);
+        assertValues(entry, rxBytes, rxPackets, txBytes, txPackets, operations);
+    }
+
+    private static void assertValues(
+            NetworkStats.Entry entry, String iface, int uid, int set, int tag) {
+        assertEquals(iface, entry.iface);
+        assertEquals(uid, entry.uid);
+        assertEquals(set, entry.set);
+        assertEquals(tag, entry.tag);
+    }
+
+    private static void assertValues(NetworkStats.Entry entry, long rxBytes, long rxPackets,
+            long txBytes, long txPackets, long operations) {
+        assertEquals(rxBytes, entry.rxBytes);
+        assertEquals(rxPackets, entry.rxPackets);
+        assertEquals(txBytes, entry.txBytes);
+        assertEquals(txPackets, entry.txPackets);
+        assertEquals(operations, entry.operations);
+    }
+
+}
diff --git a/core/tests/coretests/src/android/net/RouteInfoTest.java b/core/tests/coretests/src/android/net/RouteInfoTest.java
new file mode 100644
index 0000000..01283a6
--- /dev/null
+++ b/core/tests/coretests/src/android/net/RouteInfoTest.java
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import java.lang.reflect.Method;
+import java.net.InetAddress;
+
+import android.net.LinkAddress;
+import android.net.RouteInfo;
+import android.os.Parcel;
+
+import junit.framework.TestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+public class RouteInfoTest extends TestCase {
+
+    private InetAddress Address(String addr) {
+        return InetAddress.parseNumericAddress(addr);
+    }
+
+    private LinkAddress Prefix(String prefix) {
+        String[] parts = prefix.split("/");
+        return new LinkAddress(Address(parts[0]), Integer.parseInt(parts[1]));
+    }
+
+    @SmallTest
+    public void testConstructor() {
+        RouteInfo r;
+
+        // Invalid input.
+        try {
+            r = new RouteInfo((LinkAddress) null, null, "rmnet0");
+            fail("Expected RuntimeException:  destination and gateway null");
+        } catch(RuntimeException e) {}
+
+        // Null destination is default route.
+        r = new RouteInfo((LinkAddress) null, Address("2001:db8::1"), null);
+        assertEquals(Prefix("::/0"), r.getDestination());
+        assertEquals(Address("2001:db8::1"), r.getGateway());
+        assertNull(r.getInterface());
+
+        r = new RouteInfo((LinkAddress) null, Address("192.0.2.1"), "wlan0");
+        assertEquals(Prefix("0.0.0.0/0"), r.getDestination());
+        assertEquals(Address("192.0.2.1"), r.getGateway());
+        assertEquals("wlan0", r.getInterface());
+
+        // Null gateway sets gateway to unspecified address (why?).
+        r = new RouteInfo(Prefix("2001:db8:beef:cafe::/48"), null, "lo");
+        assertEquals(Prefix("2001:db8:beef::/48"), r.getDestination());
+        assertEquals(Address("::"), r.getGateway());
+        assertEquals("lo", r.getInterface());
+
+        r = new RouteInfo(Prefix("192.0.2.5/24"), null);
+        assertEquals(Prefix("192.0.2.0/24"), r.getDestination());
+        assertEquals(Address("0.0.0.0"), r.getGateway());
+        assertNull(r.getInterface());
+    }
+
+    public void testMatches() {
+        class PatchedRouteInfo extends RouteInfo {
+            public PatchedRouteInfo(LinkAddress destination, InetAddress gateway, String iface) {
+                super(destination, gateway, iface);
+            }
+
+            public boolean matches(InetAddress destination) {
+                return super.matches(destination);
+            }
+        }
+
+        RouteInfo r;
+
+        r = new PatchedRouteInfo(Prefix("2001:db8:f00::ace:d00d/127"), null, "rmnet0");
+        assertTrue(r.matches(Address("2001:db8:f00::ace:d00c")));
+        assertTrue(r.matches(Address("2001:db8:f00::ace:d00d")));
+        assertFalse(r.matches(Address("2001:db8:f00::ace:d00e")));
+        assertFalse(r.matches(Address("2001:db8:f00::bad:d00d")));
+        assertFalse(r.matches(Address("2001:4868:4860::8888")));
+
+        r = new PatchedRouteInfo(Prefix("192.0.2.0/23"), null, "wlan0");
+        assertTrue(r.matches(Address("192.0.2.43")));
+        assertTrue(r.matches(Address("192.0.3.21")));
+        assertFalse(r.matches(Address("192.0.0.21")));
+        assertFalse(r.matches(Address("8.8.8.8")));
+
+        RouteInfo ipv6Default = new PatchedRouteInfo(Prefix("::/0"), null, "rmnet0");
+        assertTrue(ipv6Default.matches(Address("2001:db8::f00")));
+        assertFalse(ipv6Default.matches(Address("192.0.2.1")));
+
+        RouteInfo ipv4Default = new PatchedRouteInfo(Prefix("0.0.0.0/0"), null, "rmnet0");
+        assertTrue(ipv4Default.matches(Address("255.255.255.255")));
+        assertTrue(ipv4Default.matches(Address("192.0.2.1")));
+        assertFalse(ipv4Default.matches(Address("2001:db8::f00")));
+    }
+
+    private void assertAreEqual(Object o1, Object o2) {
+        assertTrue(o1.equals(o2));
+        assertTrue(o2.equals(o1));
+    }
+
+    private void assertAreNotEqual(Object o1, Object o2) {
+        assertFalse(o1.equals(o2));
+        assertFalse(o2.equals(o1));
+    }
+
+    public void testEquals() {
+        // IPv4
+        RouteInfo r1 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "wlan0");
+        RouteInfo r2 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "wlan0");
+        assertAreEqual(r1, r2);
+
+        RouteInfo r3 = new RouteInfo(Prefix("2001:db8:ace::/49"), Address("2001:db8::1"), "wlan0");
+        RouteInfo r4 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::2"), "wlan0");
+        RouteInfo r5 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "rmnet0");
+        assertAreNotEqual(r1, r3);
+        assertAreNotEqual(r1, r4);
+        assertAreNotEqual(r1, r5);
+
+        // IPv6
+        r1 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "wlan0");
+        r2 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "wlan0");
+        assertAreEqual(r1, r2);
+
+        r3 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0");
+        r4 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.2"), "wlan0");
+        r5 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "rmnet0");
+        assertAreNotEqual(r1, r3);
+        assertAreNotEqual(r1, r4);
+        assertAreNotEqual(r1, r5);
+
+        // Interfaces (but not destinations or gateways) can be null.
+        r1 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), null);
+        r2 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), null);
+        r3 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0");
+        assertAreEqual(r1, r2);
+        assertAreNotEqual(r1, r3);
+    }
+
+    public void testHostRoute() {
+      RouteInfo r;
+
+      r = new RouteInfo(Prefix("0.0.0.0/0"), Address("0.0.0.0"), "wlan0");
+      assertFalse(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("::/0"), Address("::"), "wlan0");
+      assertFalse(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("192.0.2.0/24"), null, "wlan0");
+      assertFalse(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("2001:db8::/48"), null, "wlan0");
+      assertFalse(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("192.0.2.0/32"), Address("0.0.0.0"), "wlan0");
+      assertTrue(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("2001:db8::/128"), Address("::"), "wlan0");
+      assertTrue(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("192.0.2.0/32"), null, "wlan0");
+      assertTrue(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("2001:db8::/128"), null, "wlan0");
+      assertTrue(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("::/128"), Address("fe80::"), "wlan0");
+      assertTrue(r.isHostRoute());
+
+      r = new RouteInfo(Prefix("0.0.0.0/32"), Address("192.0.2.1"), "wlan0");
+      assertTrue(r.isHostRoute());
+    }
+
+    public RouteInfo passThroughParcel(RouteInfo r) {
+        Parcel p = Parcel.obtain();
+        RouteInfo r2 = null;
+        try {
+            r.writeToParcel(p, 0);
+            p.setDataPosition(0);
+            r2 = RouteInfo.CREATOR.createFromParcel(p);
+        } finally {
+            p.recycle();
+        }
+        assertNotNull(r2);
+        return r2;
+    }
+
+    public void assertParcelingIsLossless(RouteInfo r) {
+      RouteInfo r2 = passThroughParcel(r);
+      assertEquals(r, r2);
+    }
+
+    public void testParceling() {
+        RouteInfo r;
+
+        r = new RouteInfo(Prefix("::/0"), Address("2001:db8::"), null);
+        assertParcelingIsLossless(r);
+
+        r = new RouteInfo(Prefix("192.0.2.0/24"), null, "wlan0");
+        assertParcelingIsLossless(r);
+    }
+}
diff --git a/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java b/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java
new file mode 100644
index 0000000..d3dd01a
--- /dev/null
+++ b/core/tests/coretests/src/com/android/internal/net/NetworkStatsFactoryTest.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.internal.net;
+
+import static android.net.NetworkStats.SET_ALL;
+import static android.net.NetworkStats.SET_DEFAULT;
+import static android.net.NetworkStats.SET_FOREGROUND;
+import static android.net.NetworkStats.TAG_NONE;
+import static android.net.NetworkStats.UID_ALL;
+import static com.android.server.NetworkManagementSocketTagger.kernelToTag;
+
+import android.content.res.Resources;
+import android.net.NetworkStats;
+import android.net.TrafficStats;
+import android.test.AndroidTestCase;
+
+import com.android.frameworks.coretests.R;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import libcore.io.IoUtils;
+import libcore.io.Streams;
+
+/**
+ * Tests for {@link NetworkStatsFactory}.
+ */
+public class NetworkStatsFactoryTest extends AndroidTestCase {
+    private File mTestProc;
+    private NetworkStatsFactory mFactory;
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        mTestProc = new File(getContext().getFilesDir(), "proc");
+        if (mTestProc.exists()) {
+            IoUtils.deleteContents(mTestProc);
+        }
+
+        mFactory = new NetworkStatsFactory(mTestProc);
+    }
+
+    @Override
+    public void tearDown() throws Exception {
+        mFactory = null;
+
+        if (mTestProc.exists()) {
+            IoUtils.deleteContents(mTestProc);
+        }
+
+        super.tearDown();
+    }
+
+    public void testNetworkStatsDetail() throws Exception {
+        stageFile(R.raw.xt_qtaguid_typical, new File(mTestProc, "net/xt_qtaguid/stats"));
+
+        final NetworkStats stats = mFactory.readNetworkStatsDetail();
+        assertEquals(70, stats.size());
+        assertStatsEntry(stats, "wlan0", 0, SET_DEFAULT, 0x0, 18621L, 2898L);
+        assertStatsEntry(stats, "wlan0", 10011, SET_DEFAULT, 0x0, 35777L, 5718L);
+        assertStatsEntry(stats, "wlan0", 10021, SET_DEFAULT, 0x7fffff01, 562386L, 49228L);
+        assertStatsEntry(stats, "rmnet1", 10021, SET_DEFAULT, 0x30100000, 219110L, 227423L);
+        assertStatsEntry(stats, "rmnet2", 10001, SET_DEFAULT, 0x0, 1125899906842624L, 984L);
+    }
+
+    public void testKernelTags() throws Exception {
+        assertEquals(0, kernelToTag("0x0000000000000000"));
+        assertEquals(0x32, kernelToTag("0x0000003200000000"));
+        assertEquals(2147483647, kernelToTag("0x7fffffff00000000"));
+        assertEquals(0, kernelToTag("0x0000000000000000"));
+        assertEquals(2147483136, kernelToTag("0x7FFFFE0000000000"));
+
+        assertEquals(0, kernelToTag("0x0"));
+        assertEquals(0, kernelToTag("0xf00d"));
+        assertEquals(1, kernelToTag("0x100000000"));
+        assertEquals(14438007, kernelToTag("0xdc4e7700000000"));
+        assertEquals(TrafficStats.TAG_SYSTEM_DOWNLOAD, kernelToTag("0xffffff0100000000"));
+    }
+
+    public void testNetworkStatsWithSet() throws Exception {
+        stageFile(R.raw.xt_qtaguid_typical, new File(mTestProc, "net/xt_qtaguid/stats"));
+
+        final NetworkStats stats = mFactory.readNetworkStatsDetail();
+        assertEquals(70, stats.size());
+        assertStatsEntry(stats, "rmnet1", 10021, SET_DEFAULT, 0x30100000, 219110L, 578L, 227423L, 676L);
+        assertStatsEntry(stats, "rmnet1", 10021, SET_FOREGROUND, 0x30100000, 742L, 3L, 1265L, 3L);
+    }
+
+    public void testNetworkStatsSingle() throws Exception {
+        stageFile(R.raw.xt_qtaguid_iface_typical, new File(mTestProc, "net/xt_qtaguid/iface_stat_all"));
+
+        final NetworkStats stats = mFactory.readNetworkStatsSummaryDev();
+        assertEquals(6, stats.size());
+        assertStatsEntry(stats, "rmnet0", UID_ALL, SET_ALL, TAG_NONE, 2112L, 24L, 700L, 10L);
+        assertStatsEntry(stats, "test1", UID_ALL, SET_ALL, TAG_NONE, 6L, 8L, 10L, 12L);
+        assertStatsEntry(stats, "test2", UID_ALL, SET_ALL, TAG_NONE, 1L, 2L, 3L, 4L);
+    }
+
+    public void testNetworkStatsXt() throws Exception {
+        stageFile(R.raw.xt_qtaguid_iface_fmt_typical,
+                new File(mTestProc, "net/xt_qtaguid/iface_stat_fmt"));
+
+        final NetworkStats stats = mFactory.readNetworkStatsSummaryXt();
+        assertEquals(3, stats.size());
+        assertStatsEntry(stats, "rmnet0", UID_ALL, SET_ALL, TAG_NONE, 6824L, 16L, 5692L, 10L);
+        assertStatsEntry(stats, "rmnet1", UID_ALL, SET_ALL, TAG_NONE, 11153922L, 8051L, 190226L, 2468L);
+        assertStatsEntry(stats, "rmnet2", UID_ALL, SET_ALL, TAG_NONE, 4968L, 35L, 3081L, 39L);
+    }
+
+    /**
+     * Copy a {@link Resources#openRawResource(int)} into {@link File} for
+     * testing purposes.
+     */
+    private void stageFile(int rawId, File file) throws Exception {
+        new File(file.getParent()).mkdirs();
+        InputStream in = null;
+        OutputStream out = null;
+        try {
+            in = getContext().getResources().openRawResource(rawId);
+            out = new FileOutputStream(file);
+            Streams.copy(in, out);
+        } finally {
+            IoUtils.closeQuietly(in);
+            IoUtils.closeQuietly(out);
+        }
+    }
+
+    private void stageLong(long value, File file) throws Exception {
+        new File(file.getParent()).mkdirs();
+        FileWriter out = null;
+        try {
+            out = new FileWriter(file);
+            out.write(Long.toString(value));
+        } finally {
+            IoUtils.closeQuietly(out);
+        }
+    }
+
+    private static void assertStatsEntry(NetworkStats stats, String iface, int uid, int set,
+            int tag, long rxBytes, long txBytes) {
+        final int i = stats.findIndex(iface, uid, set, tag);
+        final NetworkStats.Entry entry = stats.getValues(i, null);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+    }
+
+    private static void assertStatsEntry(NetworkStats stats, String iface, int uid, int set,
+            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets) {
+        final int i = stats.findIndex(iface, uid, set, tag);
+        final NetworkStats.Entry entry = stats.getValues(i, null);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+    }
+
+}
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
new file mode 100644
index 0000000..657d5ec
--- /dev/null
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -0,0 +1,6047 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import static android.Manifest.permission.MANAGE_NETWORK_POLICY;
+import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE;
+import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
+import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE;
+import static android.net.ConnectivityManager.NetworkCallbackListener;
+import static android.net.ConnectivityManager.TYPE_BLUETOOTH;
+import static android.net.ConnectivityManager.TYPE_DUMMY;
+import static android.net.ConnectivityManager.TYPE_MOBILE;
+import static android.net.ConnectivityManager.TYPE_MOBILE_MMS;
+import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL;
+import static android.net.ConnectivityManager.TYPE_MOBILE_DUN;
+import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA;
+import static android.net.ConnectivityManager.TYPE_MOBILE_IMS;
+import static android.net.ConnectivityManager.TYPE_MOBILE_CBS;
+import static android.net.ConnectivityManager.TYPE_MOBILE_IA;
+import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI;
+import static android.net.ConnectivityManager.TYPE_NONE;
+import static android.net.ConnectivityManager.TYPE_WIFI;
+import static android.net.ConnectivityManager.TYPE_WIMAX;
+import static android.net.ConnectivityManager.TYPE_PROXY;
+import static android.net.ConnectivityManager.getNetworkTypeName;
+import static android.net.ConnectivityManager.isNetworkTypeValid;
+import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
+import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
+
+import android.app.AlarmManager;
+import android.app.AppOpsManager;
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.bluetooth.BluetoothTetheringDataTracker;
+import android.content.ActivityNotFoundException;
+import android.content.BroadcastReceiver;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.database.ContentObserver;
+import android.net.CaptivePortalTracker;
+import android.net.ConnectivityManager;
+import android.net.DummyDataStateTracker;
+import android.net.IConnectivityManager;
+import android.net.INetworkManagementEventObserver;
+import android.net.INetworkPolicyListener;
+import android.net.INetworkPolicyManager;
+import android.net.INetworkStatsService;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.LinkProperties.CompareResult;
+import android.net.LinkQualityInfo;
+import android.net.MobileDataStateTracker;
+import android.net.Network;
+import android.net.NetworkAgent;
+import android.net.NetworkCapabilities;
+import android.net.NetworkConfig;
+import android.net.NetworkInfo;
+import android.net.NetworkInfo.DetailedState;
+import android.net.NetworkFactory;
+import android.net.NetworkQuotaInfo;
+import android.net.NetworkRequest;
+import android.net.NetworkState;
+import android.net.NetworkStateTracker;
+import android.net.NetworkUtils;
+import android.net.Proxy;
+import android.net.ProxyDataTracker;
+import android.net.ProxyInfo;
+import android.net.RouteInfo;
+import android.net.SamplingDataTracker;
+import android.net.Uri;
+import android.net.wimax.WimaxManagerConstants;
+import android.os.AsyncTask;
+import android.os.Binder;
+import android.os.Build;
+import android.os.FileUtils;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.IBinder;
+import android.os.INetworkManagementService;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.ParcelFileDescriptor;
+import android.os.PowerManager;
+import android.os.Process;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.SystemClock;
+import android.os.SystemProperties;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.security.Credentials;
+import android.security.KeyStore;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import android.util.Slog;
+import android.util.SparseArray;
+import android.util.SparseIntArray;
+import android.util.Xml;
+
+import com.android.internal.R;
+import com.android.internal.annotations.GuardedBy;
+import com.android.internal.net.LegacyVpnInfo;
+import com.android.internal.net.VpnConfig;
+import com.android.internal.net.VpnProfile;
+import com.android.internal.telephony.DctConstants;
+import com.android.internal.telephony.Phone;
+import com.android.internal.telephony.PhoneConstants;
+import com.android.internal.telephony.TelephonyIntents;
+import com.android.internal.util.AsyncChannel;
+import com.android.internal.util.IndentingPrintWriter;
+import com.android.internal.util.XmlUtils;
+import com.android.server.am.BatteryStatsService;
+import com.android.server.connectivity.DataConnectionStats;
+import com.android.server.connectivity.Nat464Xlat;
+import com.android.server.connectivity.NetworkAgentInfo;
+import com.android.server.connectivity.NetworkMonitor;
+import com.android.server.connectivity.PacManager;
+import com.android.server.connectivity.Tethering;
+import com.android.server.connectivity.Vpn;
+import com.android.server.net.BaseNetworkObserver;
+import com.android.server.net.LockdownVpnTracker;
+import com.google.android.collect.Lists;
+import com.google.android.collect.Sets;
+
+import dalvik.system.DexClassLoader;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.lang.reflect.Constructor;
+import java.net.HttpURLConnection;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.GregorianCalendar;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLSession;
+
+import static android.net.ConnectivityManager.INVALID_NET_ID;
+
+/**
+ * @hide
+ */
+public class ConnectivityService extends IConnectivityManager.Stub {
+    private static final String TAG = "ConnectivityService";
+
+    private static final boolean DBG = true;
+    private static final boolean VDBG = true; // STOPSHIP
+
+    // network sampling debugging
+    private static final boolean SAMPLE_DBG = false;
+
+    private static final boolean LOGD_RULES = false;
+
+    // TODO: create better separation between radio types and network types
+
+    // how long to wait before switching back to a radio's default network
+    private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000;
+    // system property that can override the above value
+    private static final String NETWORK_RESTORE_DELAY_PROP_NAME =
+            "android.telephony.apn-restore";
+
+    // Default value if FAIL_FAST_TIME_MS is not set
+    private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000;
+    // system property that can override DEFAULT_FAIL_FAST_TIME_MS
+    private static final String FAIL_FAST_TIME_MS =
+            "persist.radio.fail_fast_time_ms";
+
+    private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED =
+            "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED";
+
+    private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0;
+
+    private PendingIntent mSampleIntervalElapsedIntent;
+
+    // Set network sampling interval at 12 minutes, this way, even if the timers get
+    // aggregated, it will fire at around 15 minutes, which should allow us to
+    // aggregate this timer with other timers (specially the socket keep alive timers)
+    private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60);
+
+    // start network sampling a minute after booting ...
+    private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60);
+
+    AlarmManager mAlarmManager;
+
+    // used in recursive route setting to add gateways for the host for which
+    // a host route was requested.
+    private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10;
+
+    private Tethering mTethering;
+
+    private KeyStore mKeyStore;
+
+    @GuardedBy("mVpns")
+    private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>();
+    private VpnCallback mVpnCallback = new VpnCallback();
+
+    private boolean mLockdownEnabled;
+    private LockdownVpnTracker mLockdownTracker;
+
+    private Nat464Xlat mClat;
+
+    /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */
+    private Object mRulesLock = new Object();
+    /** Currently active network rules by UID. */
+    private SparseIntArray mUidRules = new SparseIntArray();
+    /** Set of ifaces that are costly. */
+    private HashSet<String> mMeteredIfaces = Sets.newHashSet();
+
+    /**
+     * Sometimes we want to refer to the individual network state
+     * trackers separately, and sometimes we just want to treat them
+     * abstractly.
+     */
+    private NetworkStateTracker mNetTrackers[];
+
+    /* Handles captive portal check on a network */
+    private CaptivePortalTracker mCaptivePortalTracker;
+
+    /**
+     * The link properties that define the current links
+     */
+    private LinkProperties mCurrentLinkProperties[];
+
+    /**
+     * A per Net list of the PID's that requested access to the net
+     * used both as a refcount and for per-PID DNS selection
+     */
+    private List<Integer> mNetRequestersPids[];
+
+    // priority order of the nettrackers
+    // (excluding dynamically set mNetworkPreference)
+    // TODO - move mNetworkTypePreference into this
+    private int[] mPriorityList;
+
+    private Context mContext;
+    private int mNetworkPreference;
+    private int mActiveDefaultNetwork = -1;
+    // 0 is full bad, 100 is full good
+    private int mDefaultInetCondition = 0;
+    private int mDefaultInetConditionPublished = 0;
+    private boolean mInetConditionChangeInFlight = false;
+    private int mDefaultConnectionSequence = 0;
+
+    private Object mDnsLock = new Object();
+    private int mNumDnsEntries;
+
+    private boolean mTestMode;
+    private static ConnectivityService sServiceInstance;
+
+    private INetworkManagementService mNetd;
+    private INetworkPolicyManager mPolicyManager;
+
+    private static final int ENABLED  = 1;
+    private static final int DISABLED = 0;
+
+    private static final boolean ADD = true;
+    private static final boolean REMOVE = false;
+
+    private static final boolean TO_DEFAULT_TABLE = true;
+    private static final boolean TO_SECONDARY_TABLE = false;
+
+    private static final boolean EXEMPT = true;
+    private static final boolean UNEXEMPT = false;
+
+    /**
+     * used internally as a delayed event to make us switch back to the
+     * default network
+     */
+    private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1;
+
+    /**
+     * used internally to change our mobile data enabled flag
+     */
+    private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2;
+
+    /**
+     * used internally to synchronize inet condition reports
+     * arg1 = networkType
+     * arg2 = condition (0 bad, 100 good)
+     */
+    private static final int EVENT_INET_CONDITION_CHANGE = 4;
+
+    /**
+     * used internally to mark the end of inet condition hold periods
+     * arg1 = networkType
+     */
+    private static final int EVENT_INET_CONDITION_HOLD_END = 5;
+
+    /**
+     * used internally to clear a wakelock when transitioning
+     * from one net to another
+     */
+    private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8;
+
+    /**
+     * used internally to reload global proxy settings
+     */
+    private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9;
+
+    /**
+     * used internally to set external dependency met/unmet
+     * arg1 = ENABLED (met) or DISABLED (unmet)
+     * arg2 = NetworkType
+     */
+    private static final int EVENT_SET_DEPENDENCY_MET = 10;
+
+    /**
+     * used internally to send a sticky broadcast delayed.
+     */
+    private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11;
+
+    /**
+     * Used internally to
+     * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}.
+     */
+    private static final int EVENT_SET_POLICY_DATA_ENABLE = 12;
+
+    private static final int EVENT_VPN_STATE_CHANGED = 13;
+
+    /**
+     * Used internally to disable fail fast of mobile data
+     */
+    private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14;
+
+    /**
+     * used internally to indicate that data sampling interval is up
+     */
+    private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15;
+
+    /**
+     * PAC manager has received new port.
+     */
+    private static final int EVENT_PROXY_HAS_CHANGED = 16;
+
+    /**
+     * used internally when registering NetworkFactories
+     * obj = NetworkFactoryInfo
+     */
+    private static final int EVENT_REGISTER_NETWORK_FACTORY = 17;
+
+    /**
+     * used internally when registering NetworkAgents
+     * obj = Messenger
+     */
+    private static final int EVENT_REGISTER_NETWORK_AGENT = 18;
+
+    /**
+     * used to add a network request
+     * includes a NetworkRequestInfo
+     */
+    private static final int EVENT_REGISTER_NETWORK_REQUEST = 19;
+
+    /**
+     * indicates a timeout period is over - check if we had a network yet or not
+     * and if not, call the timeout calback (but leave the request live until they
+     * cancel it.
+     * includes a NetworkRequestInfo
+     */
+    private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20;
+
+    /**
+     * used to add a network listener - no request
+     * includes a NetworkRequestInfo
+     */
+    private static final int EVENT_REGISTER_NETWORK_LISTENER = 21;
+
+    /**
+     * used to remove a network request, either a listener or a real request
+     * includes a NetworkRequest
+     */
+    private static final int EVENT_RELEASE_NETWORK_REQUEST = 22;
+
+    /**
+     * used internally when registering NetworkFactories
+     * obj = Messenger
+     */
+    private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23;
+
+
+    /** Handler used for internal events. */
+    final private InternalHandler mHandler;
+    /** Handler used for incoming {@link NetworkStateTracker} events. */
+    final private NetworkStateTrackerHandler mTrackerHandler;
+
+    // list of DeathRecipients used to make sure features are turned off when
+    // a process dies
+    private List<FeatureUser> mFeatureUsers;
+
+    private boolean mSystemReady;
+    private Intent mInitialBroadcast;
+
+    private PowerManager.WakeLock mNetTransitionWakeLock;
+    private String mNetTransitionWakeLockCausedBy = "";
+    private int mNetTransitionWakeLockSerialNumber;
+    private int mNetTransitionWakeLockTimeout;
+
+    private InetAddress mDefaultDns;
+
+    // Lock for protecting access to mAddedRoutes and mExemptAddresses
+    private final Object mRoutesLock = new Object();
+
+    // this collection is used to refcount the added routes - if there are none left
+    // it's time to remove the route from the route table
+    @GuardedBy("mRoutesLock")
+    private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>();
+
+    // this collection corresponds to the entries of mAddedRoutes that have routing exemptions
+    // used to handle cleanup of exempt rules
+    @GuardedBy("mRoutesLock")
+    private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>();
+
+    // used in DBG mode to track inet condition reports
+    private static final int INET_CONDITION_LOG_MAX_SIZE = 15;
+    private ArrayList mInetLog;
+
+    // track the current default http proxy - tell the world if we get a new one (real change)
+    private ProxyInfo mDefaultProxy = null;
+    private Object mProxyLock = new Object();
+    private boolean mDefaultProxyDisabled = false;
+
+    // track the global proxy.
+    private ProxyInfo mGlobalProxy = null;
+
+    private PacManager mPacManager = null;
+
+    private SettingsObserver mSettingsObserver;
+
+    private AppOpsManager mAppOpsManager;
+
+    NetworkConfig[] mNetConfigs;
+    int mNetworksDefined;
+
+    private static class RadioAttributes {
+        public int mSimultaneity;
+        public int mType;
+        public RadioAttributes(String init) {
+            String fragments[] = init.split(",");
+            mType = Integer.parseInt(fragments[0]);
+            mSimultaneity = Integer.parseInt(fragments[1]);
+        }
+    }
+    RadioAttributes[] mRadioAttributes;
+
+    // the set of network types that can only be enabled by system/sig apps
+    List mProtectedNetworks;
+
+    private DataConnectionStats mDataConnectionStats;
+
+    private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0);
+
+    TelephonyManager mTelephonyManager;
+
+    // sequence number for Networks
+    private final static int MIN_NET_ID = 10; // some reserved marks
+    private final static int MAX_NET_ID = 65535;
+    private int mNextNetId = MIN_NET_ID;
+
+    // sequence number of NetworkRequests
+    private int mNextNetworkRequestId = 1;
+
+    private static final int UID_UNUSED = -1;
+
+    /**
+     * Implements support for the legacy "one network per network type" model.
+     *
+     * We used to have a static array of NetworkStateTrackers, one for each
+     * network type, but that doesn't work any more now that we can have,
+     * for example, more that one wifi network. This class stores all the
+     * NetworkAgentInfo objects that support a given type, but the legacy
+     * API will only see the first one.
+     *
+     * It serves two main purposes:
+     *
+     * 1. Provide information about "the network for a given type" (since this
+     *    API only supports one).
+     * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if
+     *    the first network for a given type changes, or if the default network
+     *    changes.
+     */
+    private class LegacyTypeTracker {
+        /**
+         * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS).
+         * Each list holds references to all NetworkAgentInfos that are used to
+         * satisfy requests for that network type.
+         *
+         * This array is built out at startup such that an unsupported network
+         * doesn't get an ArrayList instance, making this a tristate:
+         * unsupported, supported but not active and active.
+         *
+         * The actual lists are populated when we scan the network types that
+         * are supported on this device.
+         */
+        private ArrayList<NetworkAgentInfo> mTypeLists[];
+
+        public LegacyTypeTracker() {
+            mTypeLists = (ArrayList<NetworkAgentInfo>[])
+                    new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1];
+        }
+
+        public void addSupportedType(int type) {
+            if (mTypeLists[type] != null) {
+                throw new IllegalStateException(
+                        "legacy list for type " + type + "already initialized");
+            }
+            mTypeLists[type] = new ArrayList<NetworkAgentInfo>();
+        }
+
+        private boolean isDefaultNetwork(NetworkAgentInfo nai) {
+            return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai;
+        }
+
+        public boolean isTypeSupported(int type) {
+            return isNetworkTypeValid(type) && mTypeLists[type] != null;
+        }
+
+        public NetworkAgentInfo getNetworkForType(int type) {
+            if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) {
+                return mTypeLists[type].get(0);
+            } else {
+                return null;
+            }
+        }
+
+        public void add(int type, NetworkAgentInfo nai) {
+            if (!isTypeSupported(type)) {
+                return;  // Invalid network type.
+            }
+            if (VDBG) log("Adding agent " + nai + " for legacy network type " + type);
+
+            ArrayList<NetworkAgentInfo> list = mTypeLists[type];
+            if (list.contains(nai)) {
+                loge("Attempting to register duplicate agent for type " + type + ": " + nai);
+                return;
+            }
+
+            if (list.isEmpty() || isDefaultNetwork(nai)) {
+                if (VDBG) log("Sending connected broadcast for type " + type +
+                              "isDefaultNetwork=" + isDefaultNetwork(nai));
+                sendLegacyNetworkBroadcast(nai, true, type);
+            }
+            list.add(nai);
+        }
+
+        public void remove(NetworkAgentInfo nai) {
+            if (VDBG) log("Removing agent " + nai);
+            for (int type = 0; type < mTypeLists.length; type++) {
+                ArrayList<NetworkAgentInfo> list = mTypeLists[type];
+                if (list == null || list.isEmpty()) {
+                    continue;
+                }
+
+                boolean wasFirstNetwork = false;
+                if (list.get(0).equals(nai)) {
+                    // This network was the first in the list. Send broadcast.
+                    wasFirstNetwork = true;
+                }
+                list.remove(nai);
+
+                if (wasFirstNetwork || isDefaultNetwork(nai)) {
+                    if (VDBG) log("Sending disconnected broadcast for type " + type +
+                                  "isDefaultNetwork=" + isDefaultNetwork(nai));
+                    sendLegacyNetworkBroadcast(nai, false, type);
+                }
+
+                if (!list.isEmpty() && wasFirstNetwork) {
+                    if (VDBG) log("Other network available for type " + type +
+                                  ", sending connected broadcast");
+                    sendLegacyNetworkBroadcast(list.get(0), false, type);
+                }
+            }
+        }
+    }
+    private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker();
+
+    public ConnectivityService(Context context, INetworkManagementService netd,
+            INetworkStatsService statsService, INetworkPolicyManager policyManager) {
+        // Currently, omitting a NetworkFactory will create one internally
+        // TODO: create here when we have cleaner WiMAX support
+        this(context, netd, statsService, policyManager, null);
+    }
+
+    public ConnectivityService(Context context, INetworkManagementService netManager,
+            INetworkStatsService statsService, INetworkPolicyManager policyManager,
+            NetworkFactory netFactory) {
+        if (DBG) log("ConnectivityService starting up");
+
+        NetworkCapabilities netCap = new NetworkCapabilities();
+        netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
+        netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
+        mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId());
+        NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(),
+                NetworkRequestInfo.REQUEST);
+        mNetworkRequests.put(mDefaultRequest, nri);
+
+        HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread");
+        handlerThread.start();
+        mHandler = new InternalHandler(handlerThread.getLooper());
+        mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper());
+
+        if (netFactory == null) {
+            netFactory = new DefaultNetworkFactory(context, mTrackerHandler);
+        }
+
+        // setup our unique device name
+        if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) {
+            String id = Settings.Secure.getString(context.getContentResolver(),
+                    Settings.Secure.ANDROID_ID);
+            if (id != null && id.length() > 0) {
+                String name = new String("android-").concat(id);
+                SystemProperties.set("net.hostname", name);
+            }
+        }
+
+        // read our default dns server ip
+        String dns = Settings.Global.getString(context.getContentResolver(),
+                Settings.Global.DEFAULT_DNS_SERVER);
+        if (dns == null || dns.length() == 0) {
+            dns = context.getResources().getString(
+                    com.android.internal.R.string.config_default_dns_server);
+        }
+        try {
+            mDefaultDns = NetworkUtils.numericToInetAddress(dns);
+        } catch (IllegalArgumentException e) {
+            loge("Error setting defaultDns using " + dns);
+        }
+
+        mContext = checkNotNull(context, "missing Context");
+        mNetd = checkNotNull(netManager, "missing INetworkManagementService");
+        mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
+        mKeyStore = KeyStore.getInstance();
+        mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
+
+        try {
+            mPolicyManager.registerListener(mPolicyListener);
+        } catch (RemoteException e) {
+            // ouch, no rules updates means some processes may never get network
+            loge("unable to register INetworkPolicyListener" + e.toString());
+        }
+
+        final PowerManager powerManager = (PowerManager) context.getSystemService(
+                Context.POWER_SERVICE);
+        mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
+        mNetTransitionWakeLockTimeout = mContext.getResources().getInteger(
+                com.android.internal.R.integer.config_networkTransitionTimeout);
+
+        mNetTrackers = new NetworkStateTracker[
+                ConnectivityManager.MAX_NETWORK_TYPE+1];
+        mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1];
+
+        mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1];
+        mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1];
+
+        // Load device network attributes from resources
+        String[] raStrings = context.getResources().getStringArray(
+                com.android.internal.R.array.radioAttributes);
+        for (String raString : raStrings) {
+            RadioAttributes r = new RadioAttributes(raString);
+            if (VDBG) log("raString=" + raString + " r=" + r);
+            if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) {
+                loge("Error in radioAttributes - ignoring attempt to define type " + r.mType);
+                continue;
+            }
+            if (mRadioAttributes[r.mType] != null) {
+                loge("Error in radioAttributes - ignoring attempt to redefine type " +
+                        r.mType);
+                continue;
+            }
+            mRadioAttributes[r.mType] = r;
+        }
+
+        // TODO: What is the "correct" way to do determine if this is a wifi only device?
+        boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false);
+        log("wifiOnly=" + wifiOnly);
+        String[] naStrings = context.getResources().getStringArray(
+                com.android.internal.R.array.networkAttributes);
+        for (String naString : naStrings) {
+            try {
+                NetworkConfig n = new NetworkConfig(naString);
+                if (VDBG) log("naString=" + naString + " config=" + n);
+                if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) {
+                    loge("Error in networkAttributes - ignoring attempt to define type " +
+                            n.type);
+                    continue;
+                }
+                if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) {
+                    log("networkAttributes - ignoring mobile as this dev is wifiOnly " +
+                            n.type);
+                    continue;
+                }
+                if (mNetConfigs[n.type] != null) {
+                    loge("Error in networkAttributes - ignoring attempt to redefine type " +
+                            n.type);
+                    continue;
+                }
+                if (mRadioAttributes[n.radio] == null) {
+                    loge("Error in networkAttributes - ignoring attempt to use undefined " +
+                            "radio " + n.radio + " in network type " + n.type);
+                    continue;
+                }
+                mLegacyTypeTracker.addSupportedType(n.type);
+
+                mNetConfigs[n.type] = n;
+                mNetworksDefined++;
+            } catch(Exception e) {
+                // ignore it - leave the entry null
+            }
+        }
+        if (VDBG) log("mNetworksDefined=" + mNetworksDefined);
+
+        mProtectedNetworks = new ArrayList<Integer>();
+        int[] protectedNetworks = context.getResources().getIntArray(
+                com.android.internal.R.array.config_protectedNetworks);
+        for (int p : protectedNetworks) {
+            if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) {
+                mProtectedNetworks.add(p);
+            } else {
+                if (DBG) loge("Ignoring protectedNetwork " + p);
+            }
+        }
+
+        // high priority first
+        mPriorityList = new int[mNetworksDefined];
+        {
+            int insertionPoint = mNetworksDefined-1;
+            int currentLowest = 0;
+            int nextLowest = 0;
+            while (insertionPoint > -1) {
+                for (NetworkConfig na : mNetConfigs) {
+                    if (na == null) continue;
+                    if (na.priority < currentLowest) continue;
+                    if (na.priority > currentLowest) {
+                        if (na.priority < nextLowest || nextLowest == 0) {
+                            nextLowest = na.priority;
+                        }
+                        continue;
+                    }
+                    mPriorityList[insertionPoint--] = na.type;
+                }
+                currentLowest = nextLowest;
+                nextLowest = 0;
+            }
+        }
+
+        mNetRequestersPids =
+                (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1];
+        for (int i : mPriorityList) {
+            mNetRequestersPids[i] = new ArrayList<Integer>();
+        }
+
+        mFeatureUsers = new ArrayList<FeatureUser>();
+
+        mTestMode = SystemProperties.get("cm.test.mode").equals("true")
+                && SystemProperties.get("ro.build.type").equals("eng");
+
+        // Create and start trackers for hard-coded networks
+        for (int targetNetworkType : mPriorityList) {
+            final NetworkConfig config = mNetConfigs[targetNetworkType];
+            final NetworkStateTracker tracker;
+            try {
+                tracker = netFactory.createTracker(targetNetworkType, config);
+                mNetTrackers[targetNetworkType] = tracker;
+            } catch (IllegalArgumentException e) {
+                Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType)
+                        + " tracker: " + e);
+                continue;
+            }
+
+            tracker.startMonitoring(context, mTrackerHandler);
+            if (config.isDefault()) {
+                tracker.reconnect();
+            }
+        }
+
+        mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper());
+
+        //set up the listener for user state for creating user VPNs
+        IntentFilter intentFilter = new IntentFilter();
+        intentFilter.addAction(Intent.ACTION_USER_STARTING);
+        intentFilter.addAction(Intent.ACTION_USER_STOPPING);
+        mContext.registerReceiverAsUser(
+                mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null);
+        mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler);
+
+        try {
+            mNetd.registerObserver(mTethering);
+            mNetd.registerObserver(mDataActivityObserver);
+            mNetd.registerObserver(mClat);
+        } catch (RemoteException e) {
+            loge("Error registering observer :" + e);
+        }
+
+        if (DBG) {
+            mInetLog = new ArrayList();
+        }
+
+        mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY);
+        mSettingsObserver.observe(mContext);
+
+        mDataConnectionStats = new DataConnectionStats(mContext);
+        mDataConnectionStats.startMonitoring();
+
+        // start network sampling ..
+        Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null);
+        mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext,
+                SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0);
+
+        mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
+        setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent);
+
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED);
+        mContext.registerReceiver(
+                new BroadcastReceiver() {
+                    @Override
+                    public void onReceive(Context context, Intent intent) {
+                        String action = intent.getAction();
+                        if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) {
+                            mHandler.sendMessage(mHandler.obtainMessage
+                                    (EVENT_SAMPLE_INTERVAL_ELAPSED));
+                        }
+                    }
+                },
+                new IntentFilter(filter));
+
+        mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED);
+
+        filter = new IntentFilter();
+        filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION);
+        mContext.registerReceiver(mProvisioningReceiver, filter);
+
+        mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+    }
+
+    private synchronized int nextNetworkRequestId() {
+        return mNextNetworkRequestId++;
+    }
+
+    private synchronized int nextNetId() {
+        int netId = mNextNetId;
+        if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID;
+        return netId;
+    }
+
+    /**
+     * Factory that creates {@link NetworkStateTracker} instances using given
+     * {@link NetworkConfig}.
+     *
+     * TODO - this is obsolete and will be deleted.  It's replaced by the
+     * registerNetworkFactory call and protocol.
+     * @Deprecated in favor of registerNetworkFactory dynamic bindings
+     */
+    public interface NetworkFactory {
+        public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config);
+    }
+
+    private static class DefaultNetworkFactory implements NetworkFactory {
+        private final Context mContext;
+        private final Handler mTrackerHandler;
+
+        public DefaultNetworkFactory(Context context, Handler trackerHandler) {
+            mContext = context;
+            mTrackerHandler = trackerHandler;
+        }
+
+        @Override
+        public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) {
+            switch (config.radio) {
+                case TYPE_DUMMY:
+                    return new DummyDataStateTracker(targetNetworkType, config.name);
+                case TYPE_BLUETOOTH:
+                    return BluetoothTetheringDataTracker.getInstance();
+                case TYPE_WIMAX:
+                    return makeWimaxStateTracker(mContext, mTrackerHandler);
+                case TYPE_PROXY:
+                    return new ProxyDataTracker();
+                default:
+                    throw new IllegalArgumentException(
+                            "Trying to create a NetworkStateTracker for an unknown radio type: "
+                            + config.radio);
+            }
+        }
+    }
+
+    /**
+     * Loads external WiMAX library and registers as system service, returning a
+     * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for
+     * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}.
+     */
+    private static NetworkStateTracker makeWimaxStateTracker(
+            Context context, Handler trackerHandler) {
+        // Initialize Wimax
+        DexClassLoader wimaxClassLoader;
+        Class wimaxStateTrackerClass = null;
+        Class wimaxServiceClass = null;
+        Class wimaxManagerClass;
+        String wimaxJarLocation;
+        String wimaxLibLocation;
+        String wimaxManagerClassName;
+        String wimaxServiceClassName;
+        String wimaxStateTrackerClassName;
+
+        NetworkStateTracker wimaxStateTracker = null;
+
+        boolean isWimaxEnabled = context.getResources().getBoolean(
+                com.android.internal.R.bool.config_wimaxEnabled);
+
+        if (isWimaxEnabled) {
+            try {
+                wimaxJarLocation = context.getResources().getString(
+                        com.android.internal.R.string.config_wimaxServiceJarLocation);
+                wimaxLibLocation = context.getResources().getString(
+                        com.android.internal.R.string.config_wimaxNativeLibLocation);
+                wimaxManagerClassName = context.getResources().getString(
+                        com.android.internal.R.string.config_wimaxManagerClassname);
+                wimaxServiceClassName = context.getResources().getString(
+                        com.android.internal.R.string.config_wimaxServiceClassname);
+                wimaxStateTrackerClassName = context.getResources().getString(
+                        com.android.internal.R.string.config_wimaxStateTrackerClassname);
+
+                if (DBG) log("wimaxJarLocation: " + wimaxJarLocation);
+                wimaxClassLoader =  new DexClassLoader(wimaxJarLocation,
+                        new ContextWrapper(context).getCacheDir().getAbsolutePath(),
+                        wimaxLibLocation, ClassLoader.getSystemClassLoader());
+
+                try {
+                    wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName);
+                    wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName);
+                    wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName);
+                } catch (ClassNotFoundException ex) {
+                    loge("Exception finding Wimax classes: " + ex.toString());
+                    return null;
+                }
+            } catch(Resources.NotFoundException ex) {
+                loge("Wimax Resources does not exist!!! ");
+                return null;
+            }
+
+            try {
+                if (DBG) log("Starting Wimax Service... ");
+
+                Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor
+                        (new Class[] {Context.class, Handler.class});
+                wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance(
+                        context, trackerHandler);
+
+                Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor
+                        (new Class[] {Context.class, wimaxStateTrackerClass});
+                wmxSrvConst.setAccessible(true);
+                IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker);
+                wmxSrvConst.setAccessible(false);
+
+                ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker);
+
+            } catch(Exception ex) {
+                loge("Exception creating Wimax classes: " + ex.toString());
+                return null;
+            }
+        } else {
+            loge("Wimax is not enabled or not added to the network attributes!!! ");
+            return null;
+        }
+
+        return wimaxStateTracker;
+    }
+
+    private int getConnectivityChangeDelay() {
+        final ContentResolver cr = mContext.getContentResolver();
+
+        /** Check system properties for the default value then use secure settings value, if any. */
+        int defaultDelay = SystemProperties.getInt(
+                "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY,
+                ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT);
+        return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY,
+                defaultDelay);
+    }
+
+    private boolean teardown(NetworkStateTracker netTracker) {
+        if (netTracker.teardown()) {
+            netTracker.setTeardownRequested(true);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Check if UID should be blocked from using the network represented by the
+     * given {@link NetworkStateTracker}.
+     */
+    private boolean isNetworkBlocked(int networkType, int uid) {
+        final boolean networkCostly;
+        final int uidRules;
+
+        LinkProperties lp = getLinkPropertiesForType(networkType);
+        final String iface = (lp == null ? "" : lp.getInterfaceName());
+        synchronized (mRulesLock) {
+            networkCostly = mMeteredIfaces.contains(iface);
+            uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
+        }
+
+        if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) {
+            return true;
+        }
+
+        // no restrictive rules; network is visible
+        return false;
+    }
+
+    /**
+     * Return a filtered {@link NetworkInfo}, potentially marked
+     * {@link DetailedState#BLOCKED} based on
+     * {@link #isNetworkBlocked}.
+     */
+    private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) {
+        NetworkInfo info = getNetworkInfoForType(networkType);
+        if (isNetworkBlocked(networkType, uid)) {
+            // network is blocked; clone and override state
+            info = new NetworkInfo(info);
+            info.setDetailedState(DetailedState.BLOCKED, null, null);
+        }
+        if (mLockdownTracker != null) {
+            info = mLockdownTracker.augmentNetworkInfo(info);
+        }
+        return info;
+    }
+
+    /**
+     * Return NetworkInfo for the active (i.e., connected) network interface.
+     * It is assumed that at most one network is active at a time. If more
+     * than one is active, it is indeterminate which will be returned.
+     * @return the info for the active network, or {@code null} if none is
+     * active
+     */
+    @Override
+    public NetworkInfo getActiveNetworkInfo() {
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
+        return getNetworkInfo(mActiveDefaultNetwork, uid);
+    }
+
+    // only called when the default request is satisfied
+    private void updateActiveDefaultNetwork(NetworkAgentInfo nai) {
+        if (nai != null) {
+            mActiveDefaultNetwork = nai.networkInfo.getType();
+        } else {
+            mActiveDefaultNetwork = TYPE_NONE;
+        }
+    }
+
+    /**
+     * Find the first Provisioning network.
+     *
+     * @return NetworkInfo or null if none.
+     */
+    private NetworkInfo getProvisioningNetworkInfo() {
+        enforceAccessPermission();
+
+        // Find the first Provisioning Network
+        NetworkInfo provNi = null;
+        for (NetworkInfo ni : getAllNetworkInfo()) {
+            if (ni.isConnectedToProvisioningNetwork()) {
+                provNi = ni;
+                break;
+            }
+        }
+        if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi);
+        return provNi;
+    }
+
+    /**
+     * Find the first Provisioning network or the ActiveDefaultNetwork
+     * if there is no Provisioning network
+     *
+     * @return NetworkInfo or null if none.
+     */
+    @Override
+    public NetworkInfo getProvisioningOrActiveNetworkInfo() {
+        enforceAccessPermission();
+
+        NetworkInfo provNi = getProvisioningNetworkInfo();
+        if (provNi == null) {
+            final int uid = Binder.getCallingUid();
+            provNi = getNetworkInfo(mActiveDefaultNetwork, uid);
+        }
+        if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi);
+        return provNi;
+    }
+
+    public NetworkInfo getActiveNetworkInfoUnfiltered() {
+        enforceAccessPermission();
+        if (isNetworkTypeValid(mActiveDefaultNetwork)) {
+            return getNetworkInfoForType(mActiveDefaultNetwork);
+        }
+        return null;
+    }
+
+    @Override
+    public NetworkInfo getActiveNetworkInfoForUid(int uid) {
+        enforceConnectivityInternalPermission();
+        return getNetworkInfo(mActiveDefaultNetwork, uid);
+    }
+
+    @Override
+    public NetworkInfo getNetworkInfo(int networkType) {
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
+        return getNetworkInfo(networkType, uid);
+    }
+
+    private NetworkInfo getNetworkInfo(int networkType, int uid) {
+        NetworkInfo info = null;
+        if (isNetworkTypeValid(networkType)) {
+            if (getNetworkInfoForType(networkType) != null) {
+                info = getFilteredNetworkInfo(networkType, uid);
+            }
+        }
+        return info;
+    }
+
+    @Override
+    public NetworkInfo[] getAllNetworkInfo() {
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
+        final ArrayList<NetworkInfo> result = Lists.newArrayList();
+        synchronized (mRulesLock) {
+            for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
+                    networkType++) {
+                if (getNetworkInfoForType(networkType) != null) {
+                    result.add(getFilteredNetworkInfo(networkType, uid));
+                }
+            }
+        }
+        return result.toArray(new NetworkInfo[result.size()]);
+    }
+
+    @Override
+    public boolean isNetworkSupported(int networkType) {
+        enforceAccessPermission();
+        return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null));
+    }
+
+    /**
+     * Return LinkProperties for the active (i.e., connected) default
+     * network interface.  It is assumed that at most one default network
+     * is active at a time. If more than one is active, it is indeterminate
+     * which will be returned.
+     * @return the ip properties for the active network, or {@code null} if
+     * none is active
+     */
+    @Override
+    public LinkProperties getActiveLinkProperties() {
+        return getLinkPropertiesForType(mActiveDefaultNetwork);
+    }
+
+    @Override
+    public LinkProperties getLinkPropertiesForType(int networkType) {
+        enforceAccessPermission();
+        if (isNetworkTypeValid(networkType)) {
+            return getLinkPropertiesForTypeInternal(networkType);
+        }
+        return null;
+    }
+
+    // TODO - this should be ALL networks
+    @Override
+    public LinkProperties getLinkProperties(Network network) {
+        enforceAccessPermission();
+        NetworkAgentInfo nai = mNetworkForNetId.get(network.netId);
+        if (nai != null) return new LinkProperties(nai.linkProperties);
+        return null;
+    }
+
+    @Override
+    public NetworkCapabilities getNetworkCapabilities(Network network) {
+        enforceAccessPermission();
+        NetworkAgentInfo nai = mNetworkForNetId.get(network.netId);
+        if (nai != null) return new NetworkCapabilities(nai.networkCapabilities);
+        return null;
+    }
+
+    @Override
+    public NetworkState[] getAllNetworkState() {
+        enforceAccessPermission();
+        final int uid = Binder.getCallingUid();
+        final ArrayList<NetworkState> result = Lists.newArrayList();
+        synchronized (mRulesLock) {
+            for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
+                    networkType++) {
+                if (getNetworkInfoForType(networkType) != null) {
+                    final NetworkInfo info = getFilteredNetworkInfo(networkType, uid);
+                    final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType);
+                    final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType);
+                    result.add(new NetworkState(info, lp, netcap));
+                }
+            }
+        }
+        return result.toArray(new NetworkState[result.size()]);
+    }
+
+    private NetworkState getNetworkStateUnchecked(int networkType) {
+        if (isNetworkTypeValid(networkType)) {
+            NetworkInfo info = getNetworkInfoForType(networkType);
+            if (info != null) {
+                return new NetworkState(info,
+                        getLinkPropertiesForTypeInternal(networkType),
+                        getNetworkCapabilitiesForType(networkType));
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
+        enforceAccessPermission();
+
+        final long token = Binder.clearCallingIdentity();
+        try {
+            final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork);
+            if (state != null) {
+                try {
+                    return mPolicyManager.getNetworkQuotaInfo(state);
+                } catch (RemoteException e) {
+                }
+            }
+            return null;
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    @Override
+    public boolean isActiveNetworkMetered() {
+        enforceAccessPermission();
+        final long token = Binder.clearCallingIdentity();
+        try {
+            return isNetworkMeteredUnchecked(mActiveDefaultNetwork);
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    private boolean isNetworkMeteredUnchecked(int networkType) {
+        final NetworkState state = getNetworkStateUnchecked(networkType);
+        if (state != null) {
+            try {
+                return mPolicyManager.isNetworkMetered(state);
+            } catch (RemoteException e) {
+            }
+        }
+        return false;
+    }
+
+    private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() {
+        @Override
+        public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) {
+            int deviceType = Integer.parseInt(label);
+            sendDataActivityBroadcast(deviceType, active, tsNanos);
+        }
+    };
+
+    /**
+     * Used to notice when the calling process dies so we can self-expire
+     *
+     * Also used to know if the process has cleaned up after itself when
+     * our auto-expire timer goes off.  The timer has a link to an object.
+     *
+     */
+    private class FeatureUser implements IBinder.DeathRecipient {
+        int mNetworkType;
+        String mFeature;
+        IBinder mBinder;
+        int mPid;
+        int mUid;
+        long mCreateTime;
+
+        FeatureUser(int type, String feature, IBinder binder) {
+            super();
+            mNetworkType = type;
+            mFeature = feature;
+            mBinder = binder;
+            mPid = getCallingPid();
+            mUid = getCallingUid();
+            mCreateTime = System.currentTimeMillis();
+
+            try {
+                mBinder.linkToDeath(this, 0);
+            } catch (RemoteException e) {
+                binderDied();
+            }
+        }
+
+        void unlinkDeathRecipient() {
+            mBinder.unlinkToDeath(this, 0);
+        }
+
+        public void binderDied() {
+            log("ConnectivityService FeatureUser binderDied(" +
+                    mNetworkType + ", " + mFeature + ", " + mBinder + "), created " +
+                    (System.currentTimeMillis() - mCreateTime) + " mSec ago");
+            stopUsingNetworkFeature(this, false);
+        }
+
+        public void expire() {
+            if (VDBG) {
+                log("ConnectivityService FeatureUser expire(" +
+                        mNetworkType + ", " + mFeature + ", " + mBinder +"), created " +
+                        (System.currentTimeMillis() - mCreateTime) + " mSec ago");
+            }
+            stopUsingNetworkFeature(this, false);
+        }
+
+        public boolean isSameUser(FeatureUser u) {
+            if (u == null) return false;
+
+            return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature);
+        }
+
+        public boolean isSameUser(int pid, int uid, int networkType, String feature) {
+            if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) &&
+                TextUtils.equals(mFeature, feature)) {
+                return true;
+            }
+            return false;
+        }
+
+        public String toString() {
+            return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " +
+                    (System.currentTimeMillis() - mCreateTime) + " mSec ago";
+        }
+    }
+
+    // javadoc from interface
+    public int startUsingNetworkFeature(int networkType, String feature,
+            IBinder binder) {
+        long startTime = 0;
+        if (DBG) {
+            startTime = SystemClock.elapsedRealtime();
+        }
+        if (VDBG) {
+            log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid="
+                    + Binder.getCallingUid());
+        }
+        enforceChangePermission();
+        try {
+            if (!ConnectivityManager.isNetworkTypeValid(networkType) ||
+                    mNetConfigs[networkType] == null) {
+                return PhoneConstants.APN_REQUEST_FAILED;
+            }
+
+            FeatureUser f = new FeatureUser(networkType, feature, binder);
+
+            // TODO - move this into individual networktrackers
+            int usedNetworkType = convertFeatureToNetworkType(networkType, feature);
+
+            if (mLockdownEnabled) {
+                // Since carrier APNs usually aren't available from VPN
+                // endpoint, mark them as unavailable.
+                return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
+            }
+
+            if (mProtectedNetworks.contains(usedNetworkType)) {
+                enforceConnectivityInternalPermission();
+            }
+
+            // if UID is restricted, don't allow them to bring up metered APNs
+            final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType);
+            final int uidRules;
+            synchronized (mRulesLock) {
+                uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL);
+            }
+            if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) {
+                return PhoneConstants.APN_REQUEST_FAILED;
+            }
+
+            NetworkStateTracker network = mNetTrackers[usedNetworkType];
+            if (network != null) {
+                Integer currentPid = new Integer(getCallingPid());
+                if (usedNetworkType != networkType) {
+                    NetworkInfo ni = network.getNetworkInfo();
+
+                    if (ni.isAvailable() == false) {
+                        if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
+                            if (DBG) log("special network not available ni=" + ni.getTypeName());
+                            return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
+                        } else {
+                            // else make the attempt anyway - probably giving REQUEST_STARTED below
+                            if (DBG) {
+                                log("special network not available, but try anyway ni=" +
+                                        ni.getTypeName());
+                            }
+                        }
+                    }
+
+                    int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType);
+
+                    synchronized(this) {
+                        boolean addToList = true;
+                        if (restoreTimer < 0) {
+                            // In case there is no timer is specified for the feature,
+                            // make sure we don't add duplicate entry with the same request.
+                            for (FeatureUser u : mFeatureUsers) {
+                                if (u.isSameUser(f)) {
+                                    // Duplicate user is found. Do not add.
+                                    addToList = false;
+                                    break;
+                                }
+                            }
+                        }
+
+                        if (addToList) mFeatureUsers.add(f);
+                        if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) {
+                            // this gets used for per-pid dns when connected
+                            mNetRequestersPids[usedNetworkType].add(currentPid);
+                        }
+                    }
+
+                    if (restoreTimer >= 0) {
+                        mHandler.sendMessageDelayed(mHandler.obtainMessage(
+                                EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer);
+                    }
+
+                    if ((ni.isConnectedOrConnecting() == true) &&
+                            !network.isTeardownRequested()) {
+                        if (ni.isConnected() == true) {
+                            final long token = Binder.clearCallingIdentity();
+                            try {
+                                // add the pid-specific dns
+                                handleDnsConfigurationChange(usedNetworkType);
+                                if (VDBG) log("special network already active");
+                            } finally {
+                                Binder.restoreCallingIdentity(token);
+                            }
+                            return PhoneConstants.APN_ALREADY_ACTIVE;
+                        }
+                        if (VDBG) log("special network already connecting");
+                        return PhoneConstants.APN_REQUEST_STARTED;
+                    }
+
+                    // check if the radio in play can make another contact
+                    // assume if cannot for now
+
+                    if (DBG) {
+                        log("startUsingNetworkFeature reconnecting to " + networkType + ": " +
+                                feature);
+                    }
+                    if (network.reconnect()) {
+                        if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED");
+                        return PhoneConstants.APN_REQUEST_STARTED;
+                    } else {
+                        if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED");
+                        return PhoneConstants.APN_REQUEST_FAILED;
+                    }
+                } else {
+                    // need to remember this unsupported request so we respond appropriately on stop
+                    synchronized(this) {
+                        mFeatureUsers.add(f);
+                        if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) {
+                            // this gets used for per-pid dns when connected
+                            mNetRequestersPids[usedNetworkType].add(currentPid);
+                        }
+                    }
+                    if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature.");
+                    return -1;
+                }
+            }
+            if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE");
+            return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
+         } finally {
+            if (DBG) {
+                final long execTime = SystemClock.elapsedRealtime() - startTime;
+                if (execTime > 250) {
+                    loge("startUsingNetworkFeature took too long: " + execTime + "ms");
+                } else {
+                    if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms");
+                }
+            }
+         }
+    }
+
+    // javadoc from interface
+    public int stopUsingNetworkFeature(int networkType, String feature) {
+        enforceChangePermission();
+
+        int pid = getCallingPid();
+        int uid = getCallingUid();
+
+        FeatureUser u = null;
+        boolean found = false;
+
+        synchronized(this) {
+            for (FeatureUser x : mFeatureUsers) {
+                if (x.isSameUser(pid, uid, networkType, feature)) {
+                    u = x;
+                    found = true;
+                    break;
+                }
+            }
+        }
+        if (found && u != null) {
+            if (VDBG) log("stopUsingNetworkFeature: X");
+            // stop regardless of how many other time this proc had called start
+            return stopUsingNetworkFeature(u, true);
+        } else {
+            // none found!
+            if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring");
+            return 1;
+        }
+    }
+
+    private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) {
+        int networkType = u.mNetworkType;
+        String feature = u.mFeature;
+        int pid = u.mPid;
+        int uid = u.mUid;
+
+        NetworkStateTracker tracker = null;
+        boolean callTeardown = false;  // used to carry our decision outside of sync block
+
+        if (VDBG) {
+            log("stopUsingNetworkFeature: net " + networkType + ": " + feature);
+        }
+
+        if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
+            if (DBG) {
+                log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
+                        ", net is invalid");
+            }
+            return -1;
+        }
+
+        // need to link the mFeatureUsers list with the mNetRequestersPids state in this
+        // sync block
+        synchronized(this) {
+            // check if this process still has an outstanding start request
+            if (!mFeatureUsers.contains(u)) {
+                if (VDBG) {
+                    log("stopUsingNetworkFeature: this process has no outstanding requests" +
+                        ", ignoring");
+                }
+                return 1;
+            }
+            u.unlinkDeathRecipient();
+            mFeatureUsers.remove(mFeatureUsers.indexOf(u));
+            // If we care about duplicate requests, check for that here.
+            //
+            // This is done to support the extension of a request - the app
+            // can request we start the network feature again and renew the
+            // auto-shutoff delay.  Normal "stop" calls from the app though
+            // do not pay attention to duplicate requests - in effect the
+            // API does not refcount and a single stop will counter multiple starts.
+            if (ignoreDups == false) {
+                for (FeatureUser x : mFeatureUsers) {
+                    if (x.isSameUser(u)) {
+                        if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring");
+                        return 1;
+                    }
+                }
+            }
+
+            // TODO - move to individual network trackers
+            int usedNetworkType = convertFeatureToNetworkType(networkType, feature);
+
+            tracker =  mNetTrackers[usedNetworkType];
+            if (tracker == null) {
+                if (DBG) {
+                    log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
+                            " no known tracker for used net type " + usedNetworkType);
+                }
+                return -1;
+            }
+            if (usedNetworkType != networkType) {
+                Integer currentPid = new Integer(pid);
+                mNetRequestersPids[usedNetworkType].remove(currentPid);
+
+                final long token = Binder.clearCallingIdentity();
+                try {
+                    reassessPidDns(pid, true);
+                } finally {
+                    Binder.restoreCallingIdentity(token);
+                }
+                flushVmDnsCache();
+                if (mNetRequestersPids[usedNetworkType].size() != 0) {
+                    if (VDBG) {
+                        log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
+                                " others still using it");
+                    }
+                    return 1;
+                }
+                callTeardown = true;
+            } else {
+                if (DBG) {
+                    log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
+                            " not a known feature - dropping");
+                }
+            }
+        }
+
+        if (callTeardown) {
+            if (DBG) {
+                log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature);
+            }
+            tracker.teardown();
+            return 1;
+        } else {
+            return -1;
+        }
+    }
+
+    /**
+     * Check if the address falls into any of currently running VPN's route's.
+     */
+    private boolean isAddressUnderVpn(InetAddress address) {
+        synchronized (mVpns) {
+            synchronized (mRoutesLock) {
+                int uid = UserHandle.getCallingUserId();
+                Vpn vpn = mVpns.get(uid);
+                if (vpn == null) {
+                    return false;
+                }
+
+                // Check if an exemption exists for this address.
+                for (LinkAddress destination : mExemptAddresses) {
+                    if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) {
+                        continue;
+                    }
+
+                    int prefix = destination.getPrefixLength();
+                    InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix);
+                    InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(),
+                            prefix);
+
+                    if (addrMasked.equals(destMasked)) {
+                        return false;
+                    }
+                }
+
+                // Finally check if the address is covered by the VPN.
+                return vpn.isAddressCovered(address);
+            }
+        }
+    }
+
+    /**
+     * @deprecated use requestRouteToHostAddress instead
+     *
+     * Ensure that a network route exists to deliver traffic to the specified
+     * host via the specified network interface.
+     * @param networkType the type of the network over which traffic to the
+     * specified host is to be routed
+     * @param hostAddress the IP address of the host to which the route is
+     * desired
+     * @return {@code true} on success, {@code false} on failure
+     */
+    public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) {
+        InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress);
+
+        if (inetAddress == null) {
+            return false;
+        }
+
+        return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName);
+    }
+
+    /**
+     * Ensure that a network route exists to deliver traffic to the specified
+     * host via the specified network interface.
+     * @param networkType the type of the network over which traffic to the
+     * specified host is to be routed
+     * @param hostAddress the IP address of the host to which the route is
+     * desired
+     * @return {@code true} on success, {@code false} on failure
+     */
+    public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress,
+            String packageName) {
+        enforceChangePermission();
+        if (mProtectedNetworks.contains(networkType)) {
+            enforceConnectivityInternalPermission();
+        }
+        boolean exempt;
+        InetAddress addr;
+        try {
+            addr = InetAddress.getByAddress(hostAddress);
+        } catch (UnknownHostException e) {
+            if (DBG) log("requestRouteToHostAddress got " + e.toString());
+            return false;
+        }
+        // System apps may request routes bypassing the VPN to keep other networks working.
+        if (Binder.getCallingUid() == Process.SYSTEM_UID) {
+            exempt = true;
+        } else {
+            mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName);
+            try {
+                ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName,
+                        0);
+                exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
+            } catch (NameNotFoundException e) {
+                throw new IllegalArgumentException("Failed to find calling package details", e);
+            }
+        }
+
+        // Non-exempt routeToHost's can only be added if the host is not covered by the VPN.
+        // This can be either because the VPN's routes do not cover the destination or a
+        // system application added an exemption that covers this destination.
+        if (!exempt && isAddressUnderVpn(addr)) {
+            return false;
+        }
+
+        if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
+            if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType);
+            return false;
+        }
+
+        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+        if (nai == null) {
+            if (mLegacyTypeTracker.isTypeSupported(networkType) == false) {
+                if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType);
+            } else {
+                if (DBG) log("requestRouteToHostAddress on down network: " + networkType);
+            }
+            return false;
+        }
+
+        DetailedState netState = nai.networkInfo.getDetailedState();
+
+        if ((netState != DetailedState.CONNECTED &&
+                netState != DetailedState.CAPTIVE_PORTAL_CHECK)) {
+            if (VDBG) {
+                log("requestRouteToHostAddress on down network "
+                        + "(" + networkType + ") - dropped"
+                        + " netState=" + netState);
+            }
+            return false;
+        }
+        final int uid = Binder.getCallingUid();
+        final long token = Binder.clearCallingIdentity();
+        try {
+            LinkProperties lp = nai.linkProperties;
+            boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt,
+                    nai.network.netId, uid);
+            if (DBG) log("requestRouteToHostAddress ok=" + ok);
+            return ok;
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable,
+            boolean exempt, int netId) {
+        return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED);
+    }
+
+    private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) {
+        return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED);
+    }
+
+    private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd,
+            boolean toDefaultTable, boolean exempt, int netId, int uid) {
+        RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr);
+        if (bestRoute == null) {
+            bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName());
+        } else {
+            String iface = bestRoute.getInterface();
+            if (bestRoute.getGateway().equals(addr)) {
+                // if there is no better route, add the implied hostroute for our gateway
+                bestRoute = RouteInfo.makeHostRoute(addr, iface);
+            } else {
+                // if we will connect to this through another route, add a direct route
+                // to it's gateway
+                bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface);
+            }
+        }
+        return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid);
+    }
+
+    /*
+     * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to
+     *       incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at
+     *       the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses,
+     *       or even have the concept of an exempt address, or do things like "selectBestRoute", or
+     *       determine "default" vs "secondary" table, etc., so the cleanup becomes possible.
+     */
+    private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd,
+            boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) {
+        if ((lp == null) || (r == null)) {
+            if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r);
+            return false;
+        }
+
+        if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) {
+            loge("Error modifying route - too much recursion");
+            return false;
+        }
+
+        String ifaceName = r.getInterface();
+        if(ifaceName == null) {
+            loge("Error modifying route - no interface name");
+            return false;
+        }
+        if (r.hasGateway()) {
+            RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway());
+            if (bestRoute != null) {
+                if (bestRoute.getGateway().equals(r.getGateway())) {
+                    // if there is no better route, add the implied hostroute for our gateway
+                    bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName);
+                } else {
+                    // if we will connect to our gateway through another route, add a direct
+                    // route to it's gateway
+                    bestRoute = RouteInfo.makeHostRoute(r.getGateway(),
+                                                        bestRoute.getGateway(),
+                                                        ifaceName);
+                }
+                modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId,
+                        legacy, uid);
+            }
+        }
+        if (doAdd) {
+            if (VDBG) log("Adding " + r + " for interface " + ifaceName);
+            try {
+                if (toDefaultTable) {
+                    synchronized (mRoutesLock) {
+                        // only track default table - only one apps can effect
+                        mAddedRoutes.add(r);
+                        if (legacy) {
+                            mNetd.addLegacyRouteForNetId(netId, r, uid);
+                        } else {
+                            mNetd.addRoute(netId, r);
+                        }
+                        if (exempt) {
+                            LinkAddress dest = r.getDestinationLinkAddress();
+                            if (!mExemptAddresses.contains(dest)) {
+                                mNetd.setHostExemption(dest);
+                                mExemptAddresses.add(dest);
+                            }
+                        }
+                    }
+                } else {
+                    if (legacy) {
+                        mNetd.addLegacyRouteForNetId(netId, r, uid);
+                    } else {
+                        mNetd.addRoute(netId, r);
+                    }
+                }
+            } catch (Exception e) {
+                // never crash - catch them all
+                if (DBG) loge("Exception trying to add a route: " + e);
+                return false;
+            }
+        } else {
+            // if we remove this one and there are no more like it, then refcount==0 and
+            // we can remove it from the table
+            if (toDefaultTable) {
+                synchronized (mRoutesLock) {
+                    mAddedRoutes.remove(r);
+                    if (mAddedRoutes.contains(r) == false) {
+                        if (VDBG) log("Removing " + r + " for interface " + ifaceName);
+                        try {
+                            if (legacy) {
+                                mNetd.removeLegacyRouteForNetId(netId, r, uid);
+                            } else {
+                                mNetd.removeRoute(netId, r);
+                            }
+                            LinkAddress dest = r.getDestinationLinkAddress();
+                            if (mExemptAddresses.contains(dest)) {
+                                mNetd.clearHostExemption(dest);
+                                mExemptAddresses.remove(dest);
+                            }
+                        } catch (Exception e) {
+                            // never crash - catch them all
+                            if (VDBG) loge("Exception trying to remove a route: " + e);
+                            return false;
+                        }
+                    } else {
+                        if (VDBG) log("not removing " + r + " as it's still in use");
+                    }
+                }
+            } else {
+                if (VDBG) log("Removing " + r + " for interface " + ifaceName);
+                try {
+                    if (legacy) {
+                        mNetd.removeLegacyRouteForNetId(netId, r, uid);
+                    } else {
+                        mNetd.removeRoute(netId, r);
+                    }
+                } catch (Exception e) {
+                    // never crash - catch them all
+                    if (VDBG) loge("Exception trying to remove a route: " + e);
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    public void setDataDependency(int networkType, boolean met) {
+        enforceConnectivityInternalPermission();
+
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET,
+                (met ? ENABLED : DISABLED), networkType));
+    }
+
+    private void handleSetDependencyMet(int networkType, boolean met) {
+        if (mNetTrackers[networkType] != null) {
+            if (DBG) {
+                log("handleSetDependencyMet(" + networkType + ", " + met + ")");
+            }
+            mNetTrackers[networkType].setDependencyMet(met);
+        }
+    }
+
+    private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
+        @Override
+        public void onUidRulesChanged(int uid, int uidRules) {
+            // caller is NPMS, since we only register with them
+            if (LOGD_RULES) {
+                log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")");
+            }
+
+            synchronized (mRulesLock) {
+                // skip update when we've already applied rules
+                final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL);
+                if (oldRules == uidRules) return;
+
+                mUidRules.put(uid, uidRules);
+            }
+
+            // TODO: notify UID when it has requested targeted updates
+        }
+
+        @Override
+        public void onMeteredIfacesChanged(String[] meteredIfaces) {
+            // caller is NPMS, since we only register with them
+            if (LOGD_RULES) {
+                log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")");
+            }
+
+            synchronized (mRulesLock) {
+                mMeteredIfaces.clear();
+                for (String iface : meteredIfaces) {
+                    mMeteredIfaces.add(iface);
+                }
+            }
+        }
+
+        @Override
+        public void onRestrictBackgroundChanged(boolean restrictBackground) {
+            // caller is NPMS, since we only register with them
+            if (LOGD_RULES) {
+                log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")");
+            }
+
+            // kick off connectivity change broadcast for active network, since
+            // global background policy change is radical.
+            final int networkType = mActiveDefaultNetwork;
+            if (isNetworkTypeValid(networkType)) {
+                final NetworkStateTracker tracker = mNetTrackers[networkType];
+                if (tracker != null) {
+                    final NetworkInfo info = tracker.getNetworkInfo();
+                    if (info != null && info.isConnected()) {
+                        sendConnectedBroadcast(info);
+                    }
+                }
+            }
+        }
+    };
+
+    @Override
+    public void setPolicyDataEnable(int networkType, boolean enabled) {
+        // only someone like NPMS should only be calling us
+        mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
+
+        mHandler.sendMessage(mHandler.obtainMessage(
+                EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED)));
+    }
+
+    private void handleSetPolicyDataEnable(int networkType, boolean enabled) {
+   // TODO - handle this passing to factories
+//        if (isNetworkTypeValid(networkType)) {
+//            final NetworkStateTracker tracker = mNetTrackers[networkType];
+//            if (tracker != null) {
+//                tracker.setPolicyDataEnable(enabled);
+//            }
+//        }
+    }
+
+    private void enforceAccessPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.ACCESS_NETWORK_STATE,
+                "ConnectivityService");
+    }
+
+    private void enforceChangePermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.CHANGE_NETWORK_STATE,
+                "ConnectivityService");
+    }
+
+    // TODO Make this a special check when it goes public
+    private void enforceTetherChangePermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.CHANGE_NETWORK_STATE,
+                "ConnectivityService");
+    }
+
+    private void enforceTetherAccessPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.ACCESS_NETWORK_STATE,
+                "ConnectivityService");
+    }
+
+    private void enforceConnectivityInternalPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.CONNECTIVITY_INTERNAL,
+                "ConnectivityService");
+    }
+
+    private void enforceMarkNetworkSocketPermission() {
+        //Media server special case
+        if (Binder.getCallingUid() == Process.MEDIA_UID) {
+            return;
+        }
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.MARK_NETWORK_SOCKET,
+                "ConnectivityService");
+    }
+
+    /**
+     * Handle a {@code DISCONNECTED} event. If this pertains to the non-active
+     * network, we ignore it. If it is for the active network, we send out a
+     * broadcast. But first, we check whether it might be possible to connect
+     * to a different network.
+     * @param info the {@code NetworkInfo} for the network
+     */
+    private void handleDisconnect(NetworkInfo info) {
+
+        int prevNetType = info.getType();
+
+        mNetTrackers[prevNetType].setTeardownRequested(false);
+        int thisNetId = mNetTrackers[prevNetType].getNetwork().netId;
+
+        // Remove idletimer previously setup in {@code handleConnect}
+// Already in place in new function. This is dead code.
+//        if (mNetConfigs[prevNetType].isDefault()) {
+//            removeDataActivityTracking(prevNetType);
+//        }
+
+        /*
+         * If the disconnected network is not the active one, then don't report
+         * this as a loss of connectivity. What probably happened is that we're
+         * getting the disconnect for a network that we explicitly disabled
+         * in accordance with network preference policies.
+         */
+        if (!mNetConfigs[prevNetType].isDefault()) {
+            List<Integer> pids = mNetRequestersPids[prevNetType];
+            for (Integer pid : pids) {
+                // will remove them because the net's no longer connected
+                // need to do this now as only now do we know the pids and
+                // can properly null things that are no longer referenced.
+                reassessPidDns(pid.intValue(), false);
+            }
+        }
+
+        Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
+        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info));
+        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
+        if (info.isFailover()) {
+            intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
+            info.setFailover(false);
+        }
+        if (info.getReason() != null) {
+            intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
+        }
+        if (info.getExtraInfo() != null) {
+            intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO,
+                    info.getExtraInfo());
+        }
+
+        if (mNetConfigs[prevNetType].isDefault()) {
+            tryFailover(prevNetType);
+            if (mActiveDefaultNetwork != -1) {
+                NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo();
+                intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo);
+            } else {
+                mDefaultInetConditionPublished = 0; // we're not connected anymore
+                intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
+            }
+        }
+        intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished);
+
+        // Reset interface if no other connections are using the same interface
+        boolean doReset = true;
+        LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties();
+        if (linkProperties != null) {
+            String oldIface = linkProperties.getInterfaceName();
+            if (TextUtils.isEmpty(oldIface) == false) {
+                for (NetworkStateTracker networkStateTracker : mNetTrackers) {
+                    if (networkStateTracker == null) continue;
+                    NetworkInfo networkInfo = networkStateTracker.getNetworkInfo();
+                    if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) {
+                        LinkProperties l = networkStateTracker.getLinkProperties();
+                        if (l == null) continue;
+                        if (oldIface.equals(l.getInterfaceName())) {
+                            doReset = false;
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+
+        // do this before we broadcast the change
+// Already done in new function. This is dead code.
+//        handleConnectivityChange(prevNetType, doReset);
+
+        final Intent immediateIntent = new Intent(intent);
+        immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE);
+        sendStickyBroadcast(immediateIntent);
+        sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay());
+        /*
+         * If the failover network is already connected, then immediately send
+         * out a followup broadcast indicating successful failover
+         */
+        if (mActiveDefaultNetwork != -1) {
+            sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(),
+                    getConnectivityChangeDelay());
+        }
+        try {
+//            mNetd.removeNetwork(thisNetId);
+        } catch (Exception e) {
+            loge("Exception removing network: " + e);
+        } finally {
+            mNetTrackers[prevNetType].setNetId(INVALID_NET_ID);
+        }
+    }
+
+    private void tryFailover(int prevNetType) {
+        /*
+         * If this is a default network, check if other defaults are available.
+         * Try to reconnect on all available and let them hash it out when
+         * more than one connects.
+         */
+        if (mNetConfigs[prevNetType].isDefault()) {
+            if (mActiveDefaultNetwork == prevNetType) {
+                if (DBG) {
+                    log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType);
+                }
+                mActiveDefaultNetwork = -1;
+                try {
+                    mNetd.clearDefaultNetId();
+                } catch (Exception e) {
+                    loge("Exception clearing default network :" + e);
+                }
+            }
+
+            // don't signal a reconnect for anything lower or equal priority than our
+            // current connected default
+            // TODO - don't filter by priority now - nice optimization but risky
+//            int currentPriority = -1;
+//            if (mActiveDefaultNetwork != -1) {
+//                currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority;
+//            }
+
+            for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) {
+                if (checkType == prevNetType) continue;
+                if (mNetConfigs[checkType] == null) continue;
+                if (!mNetConfigs[checkType].isDefault()) continue;
+                if (mNetTrackers[checkType] == null) continue;
+
+// Enabling the isAvailable() optimization caused mobile to not get
+// selected if it was in the middle of error handling. Specifically
+// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL
+// would not be available and we wouldn't get connected to anything.
+// So removing the isAvailable() optimization below for now. TODO: This
+// optimization should work and we need to investigate why it doesn't work.
+// This could be related to how DEACTIVATE_DATA_CALL is reporting its
+// complete before it is really complete.
+
+//                if (!mNetTrackers[checkType].isAvailable()) continue;
+
+//                if (currentPriority >= mNetConfigs[checkType].mPriority) continue;
+
+                NetworkStateTracker checkTracker = mNetTrackers[checkType];
+                NetworkInfo checkInfo = checkTracker.getNetworkInfo();
+                if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) {
+                    checkInfo.setFailover(true);
+                    checkTracker.reconnect();
+                }
+                if (DBG) log("Attempting to switch to " + checkInfo.getTypeName());
+            }
+        }
+    }
+
+    public void sendConnectedBroadcast(NetworkInfo info) {
+        enforceConnectivityInternalPermission();
+        sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
+        sendGeneralBroadcast(info, CONNECTIVITY_ACTION);
+    }
+
+    private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) {
+        sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
+        sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs);
+    }
+
+    private void sendInetConditionBroadcast(NetworkInfo info) {
+        sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION);
+    }
+
+    private Intent makeGeneralIntent(NetworkInfo info, String bcastType) {
+        if (mLockdownTracker != null) {
+            info = mLockdownTracker.augmentNetworkInfo(info);
+        }
+
+        Intent intent = new Intent(bcastType);
+        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info));
+        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
+        if (info.isFailover()) {
+            intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
+            info.setFailover(false);
+        }
+        if (info.getReason() != null) {
+            intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
+        }
+        if (info.getExtraInfo() != null) {
+            intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO,
+                    info.getExtraInfo());
+        }
+        intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished);
+        return intent;
+    }
+
+    private void sendGeneralBroadcast(NetworkInfo info, String bcastType) {
+        sendStickyBroadcast(makeGeneralIntent(info, bcastType));
+    }
+
+    private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) {
+        sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs);
+    }
+
+    private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) {
+        Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE);
+        intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType);
+        intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active);
+        intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos);
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL,
+                    RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
+    }
+
+    private void sendStickyBroadcast(Intent intent) {
+        synchronized(this) {
+            if (!mSystemReady) {
+                mInitialBroadcast = new Intent(intent);
+            }
+            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
+            if (VDBG) {
+                log("sendStickyBroadcast: action=" + intent.getAction());
+            }
+
+            final long ident = Binder.clearCallingIdentity();
+            try {
+                mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
+            } finally {
+                Binder.restoreCallingIdentity(ident);
+            }
+        }
+    }
+
+    private void sendStickyBroadcastDelayed(Intent intent, int delayMs) {
+        if (delayMs <= 0) {
+            sendStickyBroadcast(intent);
+        } else {
+            if (VDBG) {
+                log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action="
+                        + intent.getAction());
+            }
+            mHandler.sendMessageDelayed(mHandler.obtainMessage(
+                    EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs);
+        }
+    }
+
+    void systemReady() {
+        mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this);
+        loadGlobalProxy();
+
+        synchronized(this) {
+            mSystemReady = true;
+            if (mInitialBroadcast != null) {
+                mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL);
+                mInitialBroadcast = null;
+            }
+        }
+        // load the global proxy at startup
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY));
+
+        // Try bringing up tracker, but if KeyStore isn't ready yet, wait
+        // for user to unlock device.
+        if (!updateLockdownVpn()) {
+            final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT);
+            mContext.registerReceiver(mUserPresentReceiver, filter);
+        }
+    }
+
+    private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            // Try creating lockdown tracker, since user present usually means
+            // unlocked keystore.
+            if (updateLockdownVpn()) {
+                mContext.unregisterReceiver(this);
+            }
+        }
+    };
+
+    private boolean isNewNetTypePreferredOverCurrentNetType(int type) {
+        if (((type != mNetworkPreference)
+                      && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority))
+                   || (mNetworkPreference == mActiveDefaultNetwork)) {
+            return false;
+        }
+        return true;
+    }
+
+    private void handleConnect(NetworkInfo info) {
+        final int newNetType = info.getType();
+
+        // snapshot isFailover, because sendConnectedBroadcast() resets it
+        boolean isFailover = info.isFailover();
+        final NetworkStateTracker thisNet = mNetTrackers[newNetType];
+        final String thisIface = thisNet.getLinkProperties().getInterfaceName();
+
+        if (VDBG) {
+            log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface
+                    + " isFailover" + isFailover);
+        }
+
+        // if this is a default net and other default is running
+        // kill the one not preferred
+        if (mNetConfigs[newNetType].isDefault()) {
+            if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) {
+                if (isNewNetTypePreferredOverCurrentNetType(newNetType)) {
+                   String teardownPolicy = SystemProperties.get("net.teardownPolicy");
+                   if (TextUtils.equals(teardownPolicy, "keep") == false) {
+                        // tear down the other
+                        NetworkStateTracker otherNet =
+                                mNetTrackers[mActiveDefaultNetwork];
+                        if (DBG) {
+                            log("Policy requires " + otherNet.getNetworkInfo().getTypeName() +
+                                " teardown");
+                        }
+                        if (!teardown(otherNet)) {
+                            loge("Network declined teardown request");
+                            teardown(thisNet);
+                            return;
+                        }
+                    } else {
+                        //TODO - remove
+                        loge("network teardown skipped due to net.teardownPolicy setting");
+                    }
+                } else {
+                       // don't accept this one
+                        if (VDBG) {
+                            log("Not broadcasting CONNECT_ACTION " +
+                                "to torn down network " + info.getTypeName());
+                        }
+                        teardown(thisNet);
+                        return;
+                }
+            }
+            int thisNetId = nextNetId();
+            thisNet.setNetId(thisNetId);
+            try {
+//                mNetd.createNetwork(thisNetId, thisIface);
+            } catch (Exception e) {
+                loge("Exception creating network :" + e);
+                teardown(thisNet);
+                return;
+            }
+// Already in place in new function. This is dead code.
+//            setupDataActivityTracking(newNetType);
+            synchronized (ConnectivityService.this) {
+                // have a new default network, release the transition wakelock in a second
+                // if it's held.  The second pause is to allow apps to reconnect over the
+                // new network
+                if (mNetTransitionWakeLock.isHeld()) {
+                    mHandler.sendMessageDelayed(mHandler.obtainMessage(
+                            EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
+                            mNetTransitionWakeLockSerialNumber, 0),
+                            1000);
+                }
+            }
+            mActiveDefaultNetwork = newNetType;
+            try {
+                mNetd.setDefaultNetId(thisNetId);
+            } catch (Exception e) {
+                loge("Exception setting default network :" + e);
+            }
+            // this will cause us to come up initially as unconnected and switching
+            // to connected after our normal pause unless somebody reports us as reall
+            // disconnected
+            mDefaultInetConditionPublished = 0;
+            mDefaultConnectionSequence++;
+            mInetConditionChangeInFlight = false;
+            // Don't do this - if we never sign in stay, grey
+            //reportNetworkCondition(mActiveDefaultNetwork, 100);
+            updateNetworkSettings(thisNet);
+        } else {
+            int thisNetId = nextNetId();
+            thisNet.setNetId(thisNetId);
+            try {
+//                mNetd.createNetwork(thisNetId, thisIface);
+            } catch (Exception e) {
+                loge("Exception creating network :" + e);
+                teardown(thisNet);
+                return;
+            }
+        }
+        thisNet.setTeardownRequested(false);
+// Already in place in new function. This is dead code.
+//        updateMtuSizeSettings(thisNet);
+//        handleConnectivityChange(newNetType, false);
+        sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay());
+
+        // notify battery stats service about this network
+        if (thisIface != null) {
+            try {
+                BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType);
+            } catch (RemoteException e) {
+                // ignored; service lives in system_server
+            }
+        }
+    }
+
+    /** @hide */
+    @Override
+    public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) {
+        enforceConnectivityInternalPermission();
+        if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal);
+//        mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal);
+    }
+
+    /**
+     * Setup data activity tracking for the given network.
+     *
+     * Every {@code setupDataActivityTracking} should be paired with a
+     * {@link #removeDataActivityTracking} for cleanup.
+     */
+    private void setupDataActivityTracking(NetworkAgentInfo networkAgent) {
+        final String iface = networkAgent.linkProperties.getInterfaceName();
+
+        final int timeout;
+        int type = ConnectivityManager.TYPE_NONE;
+
+        if (networkAgent.networkCapabilities.hasTransport(
+                NetworkCapabilities.TRANSPORT_CELLULAR)) {
+            timeout = Settings.Global.getInt(mContext.getContentResolver(),
+                                             Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE,
+                                             5);
+            type = ConnectivityManager.TYPE_MOBILE;
+        } else if (networkAgent.networkCapabilities.hasTransport(
+                NetworkCapabilities.TRANSPORT_WIFI)) {
+            timeout = Settings.Global.getInt(mContext.getContentResolver(),
+                                             Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI,
+                                             0);
+            type = ConnectivityManager.TYPE_WIFI;
+        } else {
+            // do not track any other networks
+            timeout = 0;
+        }
+
+        if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) {
+            try {
+                mNetd.addIdleTimer(iface, timeout, type);
+            } catch (Exception e) {
+                // You shall not crash!
+                loge("Exception in setupDataActivityTracking " + e);
+            }
+        }
+    }
+
+    /**
+     * Remove data activity tracking when network disconnects.
+     */
+    private void removeDataActivityTracking(NetworkAgentInfo networkAgent) {
+        final String iface = networkAgent.linkProperties.getInterfaceName();
+        final NetworkCapabilities caps = networkAgent.networkCapabilities;
+
+        if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) ||
+                              caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) {
+            try {
+                // the call fails silently if no idletimer setup for this interface
+                mNetd.removeIdleTimer(iface);
+            } catch (Exception e) {
+                loge("Exception in removeDataActivityTracking " + e);
+            }
+        }
+    }
+
+    /**
+     * After a change in the connectivity state of a network. We're mainly
+     * concerned with making sure that the list of DNS servers is set up
+     * according to which networks are connected, and ensuring that the
+     * right routing table entries exist.
+     *
+     * TODO - delete when we're sure all this functionallity is captured.
+     */
+    private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) {
+        int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0;
+        boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType);
+        if (VDBG) {
+            log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset
+                    + " resetMask=" + resetMask);
+        }
+
+        /*
+         * If a non-default network is enabled, add the host routes that
+         * will allow it's DNS servers to be accessed.
+         */
+        handleDnsConfigurationChange(netType);
+
+        LinkProperties newLp = null;
+
+        if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
+            newLp = mNetTrackers[netType].getLinkProperties();
+            if (VDBG) {
+                log("handleConnectivityChange: changed linkProperty[" + netType + "]:" +
+                        " doReset=" + doReset + " resetMask=" + resetMask +
+                        "\n   curLp=" + curLp +
+                        "\n   newLp=" + newLp);
+            }
+
+            if (curLp != null) {
+                if (curLp.isIdenticalInterfaceName(newLp)) {
+                    CompareResult<LinkAddress> car = curLp.compareAddresses(newLp);
+                    if ((car.removed.size() != 0) || (car.added.size() != 0)) {
+                        for (LinkAddress linkAddr : car.removed) {
+                            if (linkAddr.getAddress() instanceof Inet4Address) {
+                                resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES;
+                            }
+                            if (linkAddr.getAddress() instanceof Inet6Address) {
+                                resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES;
+                            }
+                        }
+                        if (DBG) {
+                            log("handleConnectivityChange: addresses changed" +
+                                    " linkProperty[" + netType + "]:" + " resetMask=" + resetMask +
+                                    "\n   car=" + car);
+                        }
+                    } else {
+                        if (VDBG) {
+                            log("handleConnectivityChange: addresses are the same reset per" +
+                                   " doReset linkProperty[" + netType + "]:" +
+                                   " resetMask=" + resetMask);
+                        }
+                    }
+                } else {
+                    resetMask = NetworkUtils.RESET_ALL_ADDRESSES;
+                    if (DBG) {
+                        log("handleConnectivityChange: interface not not equivalent reset both" +
+                                " linkProperty[" + netType + "]:" +
+                                " resetMask=" + resetMask);
+                    }
+                }
+            }
+            if (mNetConfigs[netType].isDefault()) {
+                handleApplyDefaultProxy(newLp.getHttpProxy());
+            }
+        } else {
+            if (VDBG) {
+                log("handleConnectivityChange: changed linkProperty[" + netType + "]:" +
+                        " doReset=" + doReset + " resetMask=" + resetMask +
+                        "\n  curLp=" + curLp +
+                        "\n  newLp= null");
+            }
+        }
+        mCurrentLinkProperties[netType] = newLp;
+        boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt,
+                                        mNetTrackers[netType].getNetwork().netId);
+
+        if (resetMask != 0 || resetDns) {
+            if (VDBG) log("handleConnectivityChange: resetting");
+            if (curLp != null) {
+                if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp);
+                for (String iface : curLp.getAllInterfaceNames()) {
+                    if (TextUtils.isEmpty(iface) == false) {
+                        if (resetMask != 0) {
+                            if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")");
+                            NetworkUtils.resetConnections(iface, resetMask);
+
+                            // Tell VPN the interface is down. It is a temporary
+                            // but effective fix to make VPN aware of the change.
+                            if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) {
+                                synchronized(mVpns) {
+                                    for (int i = 0; i < mVpns.size(); i++) {
+                                        mVpns.valueAt(i).interfaceStatusChanged(iface, false);
+                                    }
+                                }
+                            }
+                        }
+                    } else {
+                        loge("Can't reset connection for type "+netType);
+                    }
+                }
+                if (resetDns) {
+                    flushVmDnsCache();
+                    if (VDBG) log("resetting DNS cache for type " + netType);
+                    try {
+                        mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId);
+                    } catch (Exception e) {
+                        // never crash - catch them all
+                        if (DBG) loge("Exception resetting dns cache: " + e);
+                    }
+                }
+            }
+        }
+
+        // TODO: Temporary notifying upstread change to Tethering.
+        //       @see bug/4455071
+        /** Notify TetheringService if interface name has been changed. */
+        if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(),
+                             PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) {
+            if (isTetheringSupported()) {
+                mTethering.handleTetherIfaceChange();
+            }
+        }
+    }
+
+    /**
+     * Add and remove routes using the old properties (null if not previously connected),
+     * new properties (null if becoming disconnected).  May even be double null, which
+     * is a noop.
+     * Uses isLinkDefault to determine if default routes should be set or conversely if
+     * host routes should be set to the dns servers
+     * returns a boolean indicating the routes changed
+     */
+    private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp,
+            boolean isLinkDefault, boolean exempt, int netId) {
+        Collection<RouteInfo> routesToAdd = null;
+        CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>();
+        CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>();
+        if (curLp != null) {
+            // check for the delta between the current set and the new
+            routeDiff = curLp.compareAllRoutes(newLp);
+            dnsDiff = curLp.compareDnses(newLp);
+        } else if (newLp != null) {
+            routeDiff.added = newLp.getAllRoutes();
+            dnsDiff.added = newLp.getDnsServers();
+        }
+
+        boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0);
+
+        for (RouteInfo r : routeDiff.removed) {
+            if (isLinkDefault || ! r.isDefaultRoute()) {
+                if (VDBG) log("updateRoutes: default remove route r=" + r);
+                removeRoute(curLp, r, TO_DEFAULT_TABLE, netId);
+            }
+            if (isLinkDefault == false) {
+                // remove from a secondary route table
+                removeRoute(curLp, r, TO_SECONDARY_TABLE, netId);
+            }
+        }
+
+        for (RouteInfo r :  routeDiff.added) {
+            if (isLinkDefault || ! r.isDefaultRoute()) {
+                addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId);
+            } else {
+                // add to a secondary route table
+                addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId);
+
+                // many radios add a default route even when we don't want one.
+                // remove the default route unless somebody else has asked for it
+                String ifaceName = newLp.getInterfaceName();
+                synchronized (mRoutesLock) {
+                    if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) {
+                        if (VDBG) log("Removing " + r + " for interface " + ifaceName);
+                        try {
+                            mNetd.removeRoute(netId, r);
+                        } catch (Exception e) {
+                            // never crash - catch them all
+                            if (DBG) loge("Exception trying to remove a route: " + e);
+                        }
+                    }
+                }
+            }
+        }
+
+        return routesChanged;
+    }
+
+    /**
+     * Reads the network specific MTU size from reources.
+     * and set it on it's iface.
+     */
+    private void updateMtu(LinkProperties newLp, LinkProperties oldLp) {
+        final String iface = newLp.getInterfaceName();
+        final int mtu = newLp.getMtu();
+        if (oldLp != null && newLp.isIdenticalMtu(oldLp)) {
+            if (VDBG) log("identical MTU - not setting");
+            return;
+        }
+
+        if (mtu < 68 || mtu > 10000) {
+            loge("Unexpected mtu value: " + mtu + ", " + iface);
+            return;
+        }
+
+        try {
+            if (VDBG) log("Setting MTU size: " + iface + ", " + mtu);
+            mNetd.setMtu(iface, mtu);
+        } catch (Exception e) {
+            Slog.e(TAG, "exception in setMtu()" + e);
+        }
+    }
+
+    /**
+     * Reads the network specific TCP buffer sizes from SystemProperties
+     * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system
+     * wide use
+     */
+    private void updateNetworkSettings(NetworkStateTracker nt) {
+        String key = nt.getTcpBufferSizesPropName();
+        String bufferSizes = key == null ? null : SystemProperties.get(key);
+
+        if (TextUtils.isEmpty(bufferSizes)) {
+            if (VDBG) log(key + " not found in system properties. Using defaults");
+
+            // Setting to default values so we won't be stuck to previous values
+            key = "net.tcp.buffersize.default";
+            bufferSizes = SystemProperties.get(key);
+        }
+
+        // Set values in kernel
+        if (bufferSizes.length() != 0) {
+            if (VDBG) {
+                log("Setting TCP values: [" + bufferSizes
+                        + "] which comes from [" + key + "]");
+            }
+            setBufferSize(bufferSizes);
+        }
+
+        final String defaultRwndKey = "net.tcp.default_init_rwnd";
+        int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0);
+        Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(),
+            Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue);
+        final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd";
+        if (rwndValue != 0) {
+            SystemProperties.set(sysctlKey, rwndValue.toString());
+        }
+    }
+
+    /**
+     * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max]
+     * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem
+     *
+     * @param bufferSizes in the format of "readMin, readInitial, readMax,
+     *        writeMin, writeInitial, writeMax"
+     */
+    private void setBufferSize(String bufferSizes) {
+        try {
+            String[] values = bufferSizes.split(",");
+
+            if (values.length == 6) {
+              final String prefix = "/sys/kernel/ipv4/tcp_";
+                FileUtils.stringToFile(prefix + "rmem_min", values[0]);
+                FileUtils.stringToFile(prefix + "rmem_def", values[1]);
+                FileUtils.stringToFile(prefix + "rmem_max", values[2]);
+                FileUtils.stringToFile(prefix + "wmem_min", values[3]);
+                FileUtils.stringToFile(prefix + "wmem_def", values[4]);
+                FileUtils.stringToFile(prefix + "wmem_max", values[5]);
+            } else {
+                loge("Invalid buffersize string: " + bufferSizes);
+            }
+        } catch (IOException e) {
+            loge("Can't set tcp buffer sizes:" + e);
+        }
+    }
+
+    /**
+     * Adjust the per-process dns entries (net.dns<x>.<pid>) based
+     * on the highest priority active net which this process requested.
+     * If there aren't any, clear it out
+     */
+    private void reassessPidDns(int pid, boolean doBump)
+    {
+        if (VDBG) log("reassessPidDns for pid " + pid);
+        Integer myPid = new Integer(pid);
+        for(int i : mPriorityList) {
+            if (mNetConfigs[i].isDefault()) {
+                continue;
+            }
+            NetworkStateTracker nt = mNetTrackers[i];
+            if (nt.getNetworkInfo().isConnected() &&
+                    !nt.isTeardownRequested()) {
+                LinkProperties p = nt.getLinkProperties();
+                if (p == null) continue;
+                if (mNetRequestersPids[i].contains(myPid)) {
+                    try {
+                        // TODO: Reimplement this via local variable in bionic.
+                        // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid);
+                    } catch (Exception e) {
+                        Slog.e(TAG, "exception reasseses pid dns: " + e);
+                    }
+                    return;
+                }
+           }
+        }
+        // nothing found - delete
+        try {
+            // TODO: Reimplement this via local variable in bionic.
+            // mNetd.clearDnsNetworkForPid(pid);
+        } catch (Exception e) {
+            Slog.e(TAG, "exception clear interface from pid: " + e);
+        }
+    }
+
+    private void flushVmDnsCache() {
+        /*
+         * Tell the VMs to toss their DNS caches
+         */
+        Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE);
+        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
+        /*
+         * Connectivity events can happen before boot has completed ...
+         */
+        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
+    }
+
+    // Caller must grab mDnsLock.
+    private void updateDnsLocked(String network, int netId,
+            Collection<InetAddress> dnses, String domains) {
+        int last = 0;
+        if (dnses.size() == 0 && mDefaultDns != null) {
+            dnses = new ArrayList();
+            dnses.add(mDefaultDns);
+            if (DBG) {
+                loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress());
+            }
+        }
+
+        try {
+            mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains);
+
+            for (InetAddress dns : dnses) {
+                ++last;
+                String key = "net.dns" + last;
+                String value = dns.getHostAddress();
+                SystemProperties.set(key, value);
+            }
+            for (int i = last + 1; i <= mNumDnsEntries; ++i) {
+                String key = "net.dns" + i;
+                SystemProperties.set(key, "");
+            }
+            mNumDnsEntries = last;
+        } catch (Exception e) {
+            loge("exception setting default dns interface: " + e);
+        }
+    }
+
+    private void handleDnsConfigurationChange(int netType) {
+        // add default net's dns entries
+        NetworkStateTracker nt = mNetTrackers[netType];
+        if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) {
+            LinkProperties p = nt.getLinkProperties();
+            if (p == null) return;
+            Collection<InetAddress> dnses = p.getDnsServers();
+            int netId = nt.getNetwork().netId;
+            if (mNetConfigs[netType].isDefault()) {
+                String network = nt.getNetworkInfo().getTypeName();
+                synchronized (mDnsLock) {
+                    updateDnsLocked(network, netId, dnses, p.getDomains());
+                }
+            } else {
+                try {
+                    mNetd.setDnsServersForNetwork(netId,
+                            NetworkUtils.makeStrings(dnses), p.getDomains());
+                } catch (Exception e) {
+                    if (DBG) loge("exception setting dns servers: " + e);
+                }
+                // set per-pid dns for attached secondary nets
+                List<Integer> pids = mNetRequestersPids[netType];
+                for (Integer pid : pids) {
+                    try {
+                        // TODO: Reimplement this via local variable in bionic.
+                        // mNetd.setDnsNetworkForPid(netId, pid);
+                    } catch (Exception e) {
+                        Slog.e(TAG, "exception setting interface for pid: " + e);
+                    }
+                }
+            }
+            flushVmDnsCache();
+        }
+    }
+
+    @Override
+    public int getRestoreDefaultNetworkDelay(int networkType) {
+        String restoreDefaultNetworkDelayStr = SystemProperties.get(
+                NETWORK_RESTORE_DELAY_PROP_NAME);
+        if(restoreDefaultNetworkDelayStr != null &&
+                restoreDefaultNetworkDelayStr.length() != 0) {
+            try {
+                return Integer.valueOf(restoreDefaultNetworkDelayStr);
+            } catch (NumberFormatException e) {
+            }
+        }
+        // if the system property isn't set, use the value for the apn type
+        int ret = RESTORE_DEFAULT_NETWORK_DELAY;
+
+        if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) &&
+                (mNetConfigs[networkType] != null)) {
+            ret = mNetConfigs[networkType].restoreTime;
+        }
+        return ret;
+    }
+
+    @Override
+    protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
+        final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ");
+        if (mContext.checkCallingOrSelfPermission(
+                android.Manifest.permission.DUMP)
+                != PackageManager.PERMISSION_GRANTED) {
+            pw.println("Permission Denial: can't dump ConnectivityService " +
+                    "from from pid=" + Binder.getCallingPid() + ", uid=" +
+                    Binder.getCallingUid());
+            return;
+        }
+
+        pw.println("NetworkFactories for:");
+        pw.increaseIndent();
+        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
+            pw.println(nfi.name);
+        }
+        pw.decreaseIndent();
+        pw.println();
+
+        NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
+        pw.print("Active default network: ");
+        if (defaultNai == null) {
+            pw.println("none");
+        } else {
+            pw.println(defaultNai.network.netId);
+        }
+        pw.println();
+
+        pw.println("Current Networks:");
+        pw.increaseIndent();
+        for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
+            pw.println(nai.toString());
+            pw.increaseIndent();
+            pw.println("Requests:");
+            pw.increaseIndent();
+            for (int i = 0; i < nai.networkRequests.size(); i++) {
+                pw.println(nai.networkRequests.valueAt(i).toString());
+            }
+            pw.decreaseIndent();
+            pw.println("Lingered:");
+            pw.increaseIndent();
+            for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString());
+            pw.decreaseIndent();
+            pw.decreaseIndent();
+        }
+        pw.decreaseIndent();
+        pw.println();
+
+        pw.println("Network Requests:");
+        pw.increaseIndent();
+        for (NetworkRequestInfo nri : mNetworkRequests.values()) {
+            pw.println(nri.toString());
+        }
+        pw.println();
+        pw.decreaseIndent();
+
+        synchronized (this) {
+            pw.println("NetworkTranstionWakeLock is currently " +
+                    (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held.");
+            pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy);
+        }
+        pw.println();
+
+        mTethering.dump(fd, pw, args);
+
+        if (mInetLog != null) {
+            pw.println();
+            pw.println("Inet condition reports:");
+            pw.increaseIndent();
+            for(int i = 0; i < mInetLog.size(); i++) {
+                pw.println(mInetLog.get(i));
+            }
+            pw.decreaseIndent();
+        }
+    }
+
+    // must be stateless - things change under us.
+    private class NetworkStateTrackerHandler extends Handler {
+        public NetworkStateTrackerHandler(Looper looper) {
+            super(looper);
+        }
+
+        @Override
+        public void handleMessage(Message msg) {
+            NetworkInfo info;
+            switch (msg.what) {
+                case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
+                    handleAsyncChannelHalfConnect(msg);
+                    break;
+                }
+                case AsyncChannel.CMD_CHANNEL_DISCONNECT: {
+                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+                    if (nai != null) nai.asyncChannel.disconnect();
+                    break;
+                }
+                case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
+                    handleAsyncChannelDisconnected(msg);
+                    break;
+                }
+                case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: {
+                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+                    if (nai == null) {
+                        loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent");
+                    } else {
+                        updateCapabilities(nai, (NetworkCapabilities)msg.obj);
+                    }
+                    break;
+                }
+                case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: {
+                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+                    if (nai == null) {
+                        loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED");
+                    } else {
+                        if (VDBG) log("Update of Linkproperties for " + nai.name());
+                        LinkProperties oldLp = nai.linkProperties;
+                        nai.linkProperties = (LinkProperties)msg.obj;
+                        updateLinkProperties(nai, oldLp);
+                    }
+                    break;
+                }
+                case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: {
+                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+                    if (nai == null) {
+                        loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent");
+                        break;
+                    }
+                    info = (NetworkInfo) msg.obj;
+                    updateNetworkInfo(nai, info);
+                    break;
+                }
+                case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: {
+                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+                    if (nai == null) {
+                        loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent");
+                        break;
+                    }
+                    Integer score = (Integer) msg.obj;
+                    if (score != null) updateNetworkScore(nai, score.intValue());
+                    break;
+                }
+                case NetworkMonitor.EVENT_NETWORK_VALIDATED: {
+                    NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
+                    handleConnectionValidated(nai);
+                    break;
+                }
+                case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: {
+                    NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
+                    handleLingerComplete(nai);
+                    break;
+                }
+                case NetworkStateTracker.EVENT_STATE_CHANGED: {
+                    info = (NetworkInfo) msg.obj;
+                    NetworkInfo.State state = info.getState();
+
+                    if (VDBG || (state == NetworkInfo.State.CONNECTED) ||
+                            (state == NetworkInfo.State.DISCONNECTED) ||
+                            (state == NetworkInfo.State.SUSPENDED)) {
+                        log("ConnectivityChange for " +
+                            info.getTypeName() + ": " +
+                            state + "/" + info.getDetailedState());
+                    }
+
+                    // Since mobile has the notion of a network/apn that can be used for
+                    // provisioning we need to check every time we're connected as
+                    // CaptiveProtalTracker won't detected it because DCT doesn't report it
+                    // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its
+                    // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which
+                    // is received by MDST and sent here as EVENT_STATE_CHANGED.
+                    if (ConnectivityManager.isNetworkTypeMobile(info.getType())
+                            && (0 != Settings.Global.getInt(mContext.getContentResolver(),
+                                        Settings.Global.DEVICE_PROVISIONED, 0))
+                            && (((state == NetworkInfo.State.CONNECTED)
+                                    && (info.getType() == ConnectivityManager.TYPE_MOBILE))
+                                || info.isConnectedToProvisioningNetwork())) {
+                        log("ConnectivityChange checkMobileProvisioning for"
+                                + " TYPE_MOBILE or ProvisioningNetwork");
+                        checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS);
+                    }
+
+                    EventLogTags.writeConnectivityStateChanged(
+                            info.getType(), info.getSubtype(), info.getDetailedState().ordinal());
+
+                    if (info.isConnectedToProvisioningNetwork()) {
+                        /**
+                         * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING
+                         * for now its an in between network, its a network that
+                         * is actually a default network but we don't want it to be
+                         * announced as such to keep background applications from
+                         * trying to use it. It turns out that some still try so we
+                         * take the additional step of clearing any default routes
+                         * to the link that may have incorrectly setup by the lower
+                         * levels.
+                         */
+                        LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType());
+                        if (DBG) {
+                            log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp);
+                        }
+
+                        // Clear any default routes setup by the radio so
+                        // any activity by applications trying to use this
+                        // connection will fail until the provisioning network
+                        // is enabled.
+                        for (RouteInfo r : lp.getRoutes()) {
+                            removeRoute(lp, r, TO_DEFAULT_TABLE,
+                                        mNetTrackers[info.getType()].getNetwork().netId);
+                        }
+                    } else if (state == NetworkInfo.State.DISCONNECTED) {
+                    } else if (state == NetworkInfo.State.SUSPENDED) {
+                    } else if (state == NetworkInfo.State.CONNECTED) {
+                    //    handleConnect(info);
+                    }
+                    if (mLockdownTracker != null) {
+                        mLockdownTracker.onNetworkInfoChanged(info);
+                    }
+                    break;
+                }
+                case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: {
+                    info = (NetworkInfo) msg.obj;
+                    // TODO: Temporary allowing network configuration
+                    //       change not resetting sockets.
+                    //       @see bug/4455071
+                    handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()],
+                            false);
+                    break;
+                }
+                case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: {
+                    info = (NetworkInfo) msg.obj;
+                    int type = info.getType();
+                    if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]);
+                    break;
+                }
+            }
+        }
+    }
+
+    private void handleAsyncChannelHalfConnect(Message msg) {
+        AsyncChannel ac = (AsyncChannel) msg.obj;
+        if (mNetworkFactoryInfos.containsKey(msg.replyTo)) {
+            if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
+                if (VDBG) log("NetworkFactory connected");
+                // A network factory has connected.  Send it all current NetworkRequests.
+                for (NetworkRequestInfo nri : mNetworkRequests.values()) {
+                    if (nri.isRequest == false) continue;
+                    NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId);
+                    ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK,
+                            (nai != null ? nai.currentScore : 0), 0, nri.request);
+                }
+            } else {
+                loge("Error connecting NetworkFactory");
+                mNetworkFactoryInfos.remove(msg.obj);
+            }
+        } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) {
+            if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
+                if (VDBG) log("NetworkAgent connected");
+                // A network agent has requested a connection.  Establish the connection.
+                mNetworkAgentInfos.get(msg.replyTo).asyncChannel.
+                        sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
+            } else {
+                loge("Error connecting NetworkAgent");
+                NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo);
+                if (nai != null) {
+                    mNetworkForNetId.remove(nai.network.netId);
+                    mLegacyTypeTracker.remove(nai);
+                }
+            }
+        }
+    }
+    private void handleAsyncChannelDisconnected(Message msg) {
+        NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
+        if (nai != null) {
+            if (DBG) {
+                log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size());
+            }
+            // A network agent has disconnected.
+            // Tell netd to clean up the configuration for this network
+            // (routing rules, DNS, etc).
+            try {
+                mNetd.removeNetwork(nai.network.netId);
+            } catch (Exception e) {
+                loge("Exception removing network: " + e);
+            }
+            // TODO - if we move the logic to the network agent (have them disconnect
+            // because they lost all their requests or because their score isn't good)
+            // then they would disconnect organically, report their new state and then
+            // disconnect the channel.
+            if (nai.networkInfo.isConnected()) {
+                nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED,
+                        null, null);
+            }
+            notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST);
+            nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED);
+            mNetworkAgentInfos.remove(msg.replyTo);
+            updateClat(null, nai.linkProperties, nai);
+            mLegacyTypeTracker.remove(nai);
+            mNetworkForNetId.remove(nai.network.netId);
+            // Since we've lost the network, go through all the requests that
+            // it was satisfying and see if any other factory can satisfy them.
+            final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>();
+            for (int i = 0; i < nai.networkRequests.size(); i++) {
+                NetworkRequest request = nai.networkRequests.valueAt(i);
+                NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId);
+                if (VDBG) {
+                    log(" checking request " + request + ", currentNetwork = " +
+                            (currentNetwork != null ? currentNetwork.name() : "null"));
+                }
+                if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) {
+                    mNetworkForRequestId.remove(request.requestId);
+                    sendUpdatedScoreToFactories(request, 0);
+                    NetworkAgentInfo alternative = null;
+                    for (Map.Entry entry : mNetworkAgentInfos.entrySet()) {
+                        NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue();
+                        if (existing.networkInfo.isConnected() &&
+                                request.networkCapabilities.satisfiedByNetworkCapabilities(
+                                existing.networkCapabilities) &&
+                                (alternative == null ||
+                                 alternative.currentScore < existing.currentScore)) {
+                            alternative = existing;
+                        }
+                    }
+                    if (alternative != null && !toActivate.contains(alternative)) {
+                        toActivate.add(alternative);
+                    }
+                }
+            }
+            if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
+                removeDataActivityTracking(nai);
+                mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE;
+            }
+            for (NetworkAgentInfo networkToActivate : toActivate) {
+                networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
+            }
+        }
+    }
+
+    private void handleRegisterNetworkRequest(Message msg) {
+        final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj);
+        final NetworkCapabilities newCap = nri.request.networkCapabilities;
+        int score = 0;
+
+        // Check for the best currently alive network that satisfies this request
+        NetworkAgentInfo bestNetwork = null;
+        for (NetworkAgentInfo network : mNetworkAgentInfos.values()) {
+            if (VDBG) log("handleRegisterNetworkRequest checking " + network.name());
+            if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) {
+                if (VDBG) log("apparently satisfied.  currentScore=" + network.currentScore);
+                if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) {
+                    bestNetwork = network;
+                }
+            }
+        }
+        if (bestNetwork != null) {
+            if (VDBG) log("using " + bestNetwork.name());
+            bestNetwork.addRequest(nri.request);
+            mNetworkForRequestId.put(nri.request.requestId, bestNetwork);
+            int legacyType = nri.request.legacyType;
+            if (legacyType != TYPE_NONE) {
+                mLegacyTypeTracker.add(legacyType, bestNetwork);
+            }
+            notifyNetworkCallback(bestNetwork, nri);
+            score = bestNetwork.currentScore;
+        }
+        mNetworkRequests.put(nri.request, nri);
+        if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) {
+            if (DBG) log("sending new NetworkRequest to factories");
+            for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
+                nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score,
+                        0, nri.request);
+            }
+        }
+    }
+
+    private void handleReleaseNetworkRequest(NetworkRequest request) {
+        if (DBG) log("releasing NetworkRequest " + request);
+        NetworkRequestInfo nri = mNetworkRequests.remove(request);
+        if (nri != null) {
+            // tell the network currently servicing this that it's no longer interested
+            NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId);
+            if (affectedNetwork != null) {
+                mNetworkForRequestId.remove(nri.request.requestId);
+                affectedNetwork.networkRequests.remove(nri.request.requestId);
+                if (VDBG) {
+                    log(" Removing from current network " + affectedNetwork.name() + ", leaving " +
+                            affectedNetwork.networkRequests.size() + " requests.");
+                }
+            }
+
+            if (nri.isRequest) {
+                for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
+                    nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST,
+                            nri.request);
+                }
+
+                if (affectedNetwork != null) {
+                    // check if this network still has live requests - otherwise, tear down
+                    // TODO - probably push this to the NF/NA
+                    boolean keep = false;
+                    for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) {
+                        NetworkRequest r = affectedNetwork.networkRequests.valueAt(i);
+                        if (mNetworkRequests.get(r).isRequest) {
+                            keep = true;
+                            break;
+                        }
+                    }
+                    if (keep == false) {
+                        if (DBG) log("no live requests for " + affectedNetwork.name() +
+                                "; disconnecting");
+                        affectedNetwork.asyncChannel.disconnect();
+                    }
+                }
+            }
+            callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED);
+        }
+    }
+
+    private class InternalHandler extends Handler {
+        public InternalHandler(Looper looper) {
+            super(looper);
+        }
+
+        @Override
+        public void handleMessage(Message msg) {
+            NetworkInfo info;
+            switch (msg.what) {
+                case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: {
+                    String causedBy = null;
+                    synchronized (ConnectivityService.this) {
+                        if (msg.arg1 == mNetTransitionWakeLockSerialNumber &&
+                                mNetTransitionWakeLock.isHeld()) {
+                            mNetTransitionWakeLock.release();
+                            causedBy = mNetTransitionWakeLockCausedBy;
+                        }
+                    }
+                    if (causedBy != null) {
+                        log("NetTransition Wakelock for " + causedBy + " released by timeout");
+                    }
+                    break;
+                }
+                case EVENT_RESTORE_DEFAULT_NETWORK: {
+                    FeatureUser u = (FeatureUser)msg.obj;
+                    u.expire();
+                    break;
+                }
+                case EVENT_INET_CONDITION_CHANGE: {
+                    int netType = msg.arg1;
+                    int condition = msg.arg2;
+                    handleInetConditionChange(netType, condition);
+                    break;
+                }
+                case EVENT_INET_CONDITION_HOLD_END: {
+                    int netType = msg.arg1;
+                    int sequence = msg.arg2;
+                    handleInetConditionHoldEnd(netType, sequence);
+                    break;
+                }
+                case EVENT_APPLY_GLOBAL_HTTP_PROXY: {
+                    handleDeprecatedGlobalHttpProxy();
+                    break;
+                }
+                case EVENT_SET_DEPENDENCY_MET: {
+                    boolean met = (msg.arg1 == ENABLED);
+                    handleSetDependencyMet(msg.arg2, met);
+                    break;
+                }
+                case EVENT_SEND_STICKY_BROADCAST_INTENT: {
+                    Intent intent = (Intent)msg.obj;
+                    sendStickyBroadcast(intent);
+                    break;
+                }
+                case EVENT_SET_POLICY_DATA_ENABLE: {
+                    final int networkType = msg.arg1;
+                    final boolean enabled = msg.arg2 == ENABLED;
+                    handleSetPolicyDataEnable(networkType, enabled);
+                    break;
+                }
+                case EVENT_VPN_STATE_CHANGED: {
+                    if (mLockdownTracker != null) {
+                        mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj);
+                    }
+                    break;
+                }
+                case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: {
+                    int tag = mEnableFailFastMobileDataTag.get();
+                    if (msg.arg1 == tag) {
+                        MobileDataStateTracker mobileDst =
+                            (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+                        if (mobileDst != null) {
+                            mobileDst.setEnableFailFastMobileData(msg.arg2);
+                        }
+                    } else {
+                        log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1
+                                + " != tag:" + tag);
+                    }
+                    break;
+                }
+                case EVENT_SAMPLE_INTERVAL_ELAPSED: {
+                    handleNetworkSamplingTimeout();
+                    break;
+                }
+                case EVENT_PROXY_HAS_CHANGED: {
+                    handleApplyDefaultProxy((ProxyInfo)msg.obj);
+                    break;
+                }
+                case EVENT_REGISTER_NETWORK_FACTORY: {
+                    handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj);
+                    break;
+                }
+                case EVENT_UNREGISTER_NETWORK_FACTORY: {
+                    handleUnregisterNetworkFactory((Messenger)msg.obj);
+                    break;
+                }
+                case EVENT_REGISTER_NETWORK_AGENT: {
+                    handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj);
+                    break;
+                }
+                case EVENT_REGISTER_NETWORK_REQUEST:
+                case EVENT_REGISTER_NETWORK_LISTENER: {
+                    handleRegisterNetworkRequest(msg);
+                    break;
+                }
+                case EVENT_RELEASE_NETWORK_REQUEST: {
+                    handleReleaseNetworkRequest((NetworkRequest) msg.obj);
+                    break;
+                }
+            }
+        }
+    }
+
+    // javadoc from interface
+    public int tether(String iface) {
+        enforceTetherChangePermission();
+
+        if (isTetheringSupported()) {
+            return mTethering.tether(iface);
+        } else {
+            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
+        }
+    }
+
+    // javadoc from interface
+    public int untether(String iface) {
+        enforceTetherChangePermission();
+
+        if (isTetheringSupported()) {
+            return mTethering.untether(iface);
+        } else {
+            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
+        }
+    }
+
+    // javadoc from interface
+    public int getLastTetherError(String iface) {
+        enforceTetherAccessPermission();
+
+        if (isTetheringSupported()) {
+            return mTethering.getLastTetherError(iface);
+        } else {
+            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
+        }
+    }
+
+    // TODO - proper iface API for selection by property, inspection, etc
+    public String[] getTetherableUsbRegexs() {
+        enforceTetherAccessPermission();
+        if (isTetheringSupported()) {
+            return mTethering.getTetherableUsbRegexs();
+        } else {
+            return new String[0];
+        }
+    }
+
+    public String[] getTetherableWifiRegexs() {
+        enforceTetherAccessPermission();
+        if (isTetheringSupported()) {
+            return mTethering.getTetherableWifiRegexs();
+        } else {
+            return new String[0];
+        }
+    }
+
+    public String[] getTetherableBluetoothRegexs() {
+        enforceTetherAccessPermission();
+        if (isTetheringSupported()) {
+            return mTethering.getTetherableBluetoothRegexs();
+        } else {
+            return new String[0];
+        }
+    }
+
+    public int setUsbTethering(boolean enable) {
+        enforceTetherChangePermission();
+        if (isTetheringSupported()) {
+            return mTethering.setUsbTethering(enable);
+        } else {
+            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
+        }
+    }
+
+    // TODO - move iface listing, queries, etc to new module
+    // javadoc from interface
+    public String[] getTetherableIfaces() {
+        enforceTetherAccessPermission();
+        return mTethering.getTetherableIfaces();
+    }
+
+    public String[] getTetheredIfaces() {
+        enforceTetherAccessPermission();
+        return mTethering.getTetheredIfaces();
+    }
+
+    public String[] getTetheringErroredIfaces() {
+        enforceTetherAccessPermission();
+        return mTethering.getErroredIfaces();
+    }
+
+    // if ro.tether.denied = true we default to no tethering
+    // gservices could set the secure setting to 1 though to enable it on a build where it
+    // had previously been turned off.
+    public boolean isTetheringSupported() {
+        enforceTetherAccessPermission();
+        int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1);
+        boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.TETHER_SUPPORTED, defaultVal) != 0);
+        return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 ||
+                mTethering.getTetherableWifiRegexs().length != 0 ||
+                mTethering.getTetherableBluetoothRegexs().length != 0) &&
+                mTethering.getUpstreamIfaceTypes().length != 0);
+    }
+
+    // An API NetworkStateTrackers can call when they lose their network.
+    // This will automatically be cleared after X seconds or a network becomes CONNECTED,
+    // whichever happens first.  The timer is started by the first caller and not
+    // restarted by subsequent callers.
+    public void requestNetworkTransitionWakelock(String forWhom) {
+        enforceConnectivityInternalPermission();
+        synchronized (this) {
+            if (mNetTransitionWakeLock.isHeld()) return;
+            mNetTransitionWakeLockSerialNumber++;
+            mNetTransitionWakeLock.acquire();
+            mNetTransitionWakeLockCausedBy = forWhom;
+        }
+        mHandler.sendMessageDelayed(mHandler.obtainMessage(
+                EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
+                mNetTransitionWakeLockSerialNumber, 0),
+                mNetTransitionWakeLockTimeout);
+        return;
+    }
+
+    // 100 percent is full good, 0 is full bad.
+    public void reportInetCondition(int networkType, int percentage) {
+        if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")");
+        mContext.enforceCallingOrSelfPermission(
+                android.Manifest.permission.STATUS_BAR,
+                "ConnectivityService");
+
+        if (DBG) {
+            int pid = getCallingPid();
+            int uid = getCallingUid();
+            String s = pid + "(" + uid + ") reports inet is " +
+                (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " +
+                "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime();
+            mInetLog.add(s);
+            while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) {
+                mInetLog.remove(0);
+            }
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(
+            EVENT_INET_CONDITION_CHANGE, networkType, percentage));
+    }
+
+    public void reportBadNetwork(Network network) {
+        //TODO
+    }
+
+    private void handleInetConditionChange(int netType, int condition) {
+        if (mActiveDefaultNetwork == -1) {
+            if (DBG) log("handleInetConditionChange: no active default network - ignore");
+            return;
+        }
+        if (mActiveDefaultNetwork != netType) {
+            if (DBG) log("handleInetConditionChange: net=" + netType +
+                            " != default=" + mActiveDefaultNetwork + " - ignore");
+            return;
+        }
+        if (VDBG) {
+            log("handleInetConditionChange: net=" +
+                    netType + ", condition=" + condition +
+                    ",mActiveDefaultNetwork=" + mActiveDefaultNetwork);
+        }
+        mDefaultInetCondition = condition;
+        int delay;
+        if (mInetConditionChangeInFlight == false) {
+            if (VDBG) log("handleInetConditionChange: starting a change hold");
+            // setup a new hold to debounce this
+            if (mDefaultInetCondition > 50) {
+                delay = Settings.Global.getInt(mContext.getContentResolver(),
+                        Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500);
+            } else {
+                delay = Settings.Global.getInt(mContext.getContentResolver(),
+                        Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000);
+            }
+            mInetConditionChangeInFlight = true;
+            mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END,
+                    mActiveDefaultNetwork, mDefaultConnectionSequence), delay);
+        } else {
+            // we've set the new condition, when this hold ends that will get picked up
+            if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt");
+        }
+    }
+
+    private void handleInetConditionHoldEnd(int netType, int sequence) {
+        if (DBG) {
+            log("handleInetConditionHoldEnd: net=" + netType +
+                    ", condition=" + mDefaultInetCondition +
+                    ", published condition=" + mDefaultInetConditionPublished);
+        }
+        mInetConditionChangeInFlight = false;
+
+        if (mActiveDefaultNetwork == -1) {
+            if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring");
+            return;
+        }
+        if (mDefaultConnectionSequence != sequence) {
+            if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring");
+            return;
+        }
+        // TODO: Figure out why this optimization sometimes causes a
+        //       change in mDefaultInetCondition to be missed and the
+        //       UI to not be updated.
+        //if (mDefaultInetConditionPublished == mDefaultInetCondition) {
+        //    if (DBG) log("no change in condition - aborting");
+        //    return;
+        //}
+        NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork);
+        if (networkInfo.isConnected() == false) {
+            if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring");
+            return;
+        }
+        mDefaultInetConditionPublished = mDefaultInetCondition;
+        sendInetConditionBroadcast(networkInfo);
+        return;
+    }
+
+    public ProxyInfo getProxy() {
+        // this information is already available as a world read/writable jvm property
+        // so this API change wouldn't have a benifit.  It also breaks the passing
+        // of proxy info to all the JVMs.
+        // enforceAccessPermission();
+        synchronized (mProxyLock) {
+            ProxyInfo ret = mGlobalProxy;
+            if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy;
+            return ret;
+        }
+    }
+
+    public void setGlobalProxy(ProxyInfo proxyProperties) {
+        enforceConnectivityInternalPermission();
+
+        synchronized (mProxyLock) {
+            if (proxyProperties == mGlobalProxy) return;
+            if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return;
+            if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return;
+
+            String host = "";
+            int port = 0;
+            String exclList = "";
+            String pacFileUrl = "";
+            if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) ||
+                    (proxyProperties.getPacFileUrl() != null))) {
+                if (!proxyProperties.isValid()) {
+                    if (DBG)
+                        log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
+                    return;
+                }
+                mGlobalProxy = new ProxyInfo(proxyProperties);
+                host = mGlobalProxy.getHost();
+                port = mGlobalProxy.getPort();
+                exclList = mGlobalProxy.getExclusionListAsString();
+                if (proxyProperties.getPacFileUrl() != null) {
+                    pacFileUrl = proxyProperties.getPacFileUrl().toString();
+                }
+            } else {
+                mGlobalProxy = null;
+            }
+            ContentResolver res = mContext.getContentResolver();
+            final long token = Binder.clearCallingIdentity();
+            try {
+                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host);
+                Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port);
+                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST,
+                        exclList);
+                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl);
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        if (mGlobalProxy == null) {
+            proxyProperties = mDefaultProxy;
+        }
+        sendProxyBroadcast(proxyProperties);
+    }
+
+    private void loadGlobalProxy() {
+        ContentResolver res = mContext.getContentResolver();
+        String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST);
+        int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0);
+        String exclList = Settings.Global.getString(res,
+                Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST);
+        String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC);
+        if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) {
+            ProxyInfo proxyProperties;
+            if (!TextUtils.isEmpty(pacFileUrl)) {
+                proxyProperties = new ProxyInfo(pacFileUrl);
+            } else {
+                proxyProperties = new ProxyInfo(host, port, exclList);
+            }
+            if (!proxyProperties.isValid()) {
+                if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
+                return;
+            }
+
+            synchronized (mProxyLock) {
+                mGlobalProxy = proxyProperties;
+            }
+        }
+    }
+
+    public ProxyInfo getGlobalProxy() {
+        // this information is already available as a world read/writable jvm property
+        // so this API change wouldn't have a benifit.  It also breaks the passing
+        // of proxy info to all the JVMs.
+        // enforceAccessPermission();
+        synchronized (mProxyLock) {
+            return mGlobalProxy;
+        }
+    }
+
+    private void handleApplyDefaultProxy(ProxyInfo proxy) {
+        if (proxy != null && TextUtils.isEmpty(proxy.getHost())
+                && (proxy.getPacFileUrl() == null)) {
+            proxy = null;
+        }
+        synchronized (mProxyLock) {
+            if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return;
+            if (mDefaultProxy == proxy) return; // catches repeated nulls
+            if (proxy != null &&  !proxy.isValid()) {
+                if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString());
+                return;
+            }
+
+            // This call could be coming from the PacManager, containing the port of the local
+            // proxy.  If this new proxy matches the global proxy then copy this proxy to the
+            // global (to get the correct local port), and send a broadcast.
+            // TODO: Switch PacManager to have its own message to send back rather than
+            // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy.
+            if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null)
+                    && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) {
+                mGlobalProxy = proxy;
+                sendProxyBroadcast(mGlobalProxy);
+                return;
+            }
+            mDefaultProxy = proxy;
+
+            if (mGlobalProxy != null) return;
+            if (!mDefaultProxyDisabled) {
+                sendProxyBroadcast(proxy);
+            }
+        }
+    }
+
+    private void handleDeprecatedGlobalHttpProxy() {
+        String proxy = Settings.Global.getString(mContext.getContentResolver(),
+                Settings.Global.HTTP_PROXY);
+        if (!TextUtils.isEmpty(proxy)) {
+            String data[] = proxy.split(":");
+            if (data.length == 0) {
+                return;
+            }
+
+            String proxyHost =  data[0];
+            int proxyPort = 8080;
+            if (data.length > 1) {
+                try {
+                    proxyPort = Integer.parseInt(data[1]);
+                } catch (NumberFormatException e) {
+                    return;
+                }
+            }
+            ProxyInfo p = new ProxyInfo(data[0], proxyPort, "");
+            setGlobalProxy(p);
+        }
+    }
+
+    private void sendProxyBroadcast(ProxyInfo proxy) {
+        if (proxy == null) proxy = new ProxyInfo("", 0, "");
+        if (mPacManager.setCurrentProxyScriptUrl(proxy)) return;
+        if (DBG) log("sending Proxy Broadcast for " + proxy);
+        Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
+        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING |
+            Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
+        intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy);
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
+    }
+
+    private static class SettingsObserver extends ContentObserver {
+        private int mWhat;
+        private Handler mHandler;
+        SettingsObserver(Handler handler, int what) {
+            super(handler);
+            mHandler = handler;
+            mWhat = what;
+        }
+
+        void observe(Context context) {
+            ContentResolver resolver = context.getContentResolver();
+            resolver.registerContentObserver(Settings.Global.getUriFor(
+                    Settings.Global.HTTP_PROXY), false, this);
+        }
+
+        @Override
+        public void onChange(boolean selfChange) {
+            mHandler.obtainMessage(mWhat).sendToTarget();
+        }
+    }
+
+    private static void log(String s) {
+        Slog.d(TAG, s);
+    }
+
+    private static void loge(String s) {
+        Slog.e(TAG, s);
+    }
+
+    int convertFeatureToNetworkType(int networkType, String feature) {
+        int usedNetworkType = networkType;
+
+        if(networkType == ConnectivityManager.TYPE_MOBILE) {
+            if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) ||
+                    TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS;
+            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) {
+                usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS;
+            } else {
+                Slog.e(TAG, "Can't match any mobile netTracker!");
+            }
+        } else if (networkType == ConnectivityManager.TYPE_WIFI) {
+            if (TextUtils.equals(feature, "p2p")) {
+                usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P;
+            } else {
+                Slog.e(TAG, "Can't match any wifi netTracker!");
+            }
+        } else {
+            Slog.e(TAG, "Unexpected network type");
+        }
+        return usedNetworkType;
+    }
+
+    private static <T> T checkNotNull(T value, String message) {
+        if (value == null) {
+            throw new NullPointerException(message);
+        }
+        return value;
+    }
+
+    /**
+     * Protect a socket from VPN routing rules. This method is used by
+     * VpnBuilder and not available in ConnectivityManager. Permissions
+     * are checked in Vpn class.
+     * @hide
+     */
+    @Override
+    public boolean protectVpn(ParcelFileDescriptor socket) {
+        throwIfLockdownEnabled();
+        try {
+            int type = mActiveDefaultNetwork;
+            int user = UserHandle.getUserId(Binder.getCallingUid());
+            if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) {
+                synchronized(mVpns) {
+                    mVpns.get(user).protect(socket);
+                }
+                return true;
+            }
+        } catch (Exception e) {
+            // ignore
+        } finally {
+            try {
+                socket.close();
+            } catch (Exception e) {
+                // ignore
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Prepare for a VPN application. This method is used by VpnDialogs
+     * and not available in ConnectivityManager. Permissions are checked
+     * in Vpn class.
+     * @hide
+     */
+    @Override
+    public boolean prepareVpn(String oldPackage, String newPackage) {
+        throwIfLockdownEnabled();
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized(mVpns) {
+            return mVpns.get(user).prepare(oldPackage, newPackage);
+        }
+    }
+
+    @Override
+    public void markSocketAsUser(ParcelFileDescriptor socket, int uid) {
+        enforceMarkNetworkSocketPermission();
+        final long token = Binder.clearCallingIdentity();
+        try {
+            int mark = mNetd.getMarkForUid(uid);
+            // Clear the mark on the socket if no mark is needed to prevent socket reuse issues
+            if (mark == -1) {
+                mark = 0;
+            }
+            NetworkUtils.markSocket(socket.getFd(), mark);
+        } catch (RemoteException e) {
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    /**
+     * Configure a TUN interface and return its file descriptor. Parameters
+     * are encoded and opaque to this class. This method is used by VpnBuilder
+     * and not available in ConnectivityManager. Permissions are checked in
+     * Vpn class.
+     * @hide
+     */
+    @Override
+    public ParcelFileDescriptor establishVpn(VpnConfig config) {
+        throwIfLockdownEnabled();
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized(mVpns) {
+            return mVpns.get(user).establish(config);
+        }
+    }
+
+    /**
+     * Start legacy VPN, controlling native daemons as needed. Creates a
+     * secondary thread to perform connection work, returning quickly.
+     */
+    @Override
+    public void startLegacyVpn(VpnProfile profile) {
+        throwIfLockdownEnabled();
+        final LinkProperties egress = getActiveLinkProperties();
+        if (egress == null) {
+            throw new IllegalStateException("Missing active network connection");
+        }
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized(mVpns) {
+            mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress);
+        }
+    }
+
+    /**
+     * Return the information of the ongoing legacy VPN. This method is used
+     * by VpnSettings and not available in ConnectivityManager. Permissions
+     * are checked in Vpn class.
+     * @hide
+     */
+    @Override
+    public LegacyVpnInfo getLegacyVpnInfo() {
+        throwIfLockdownEnabled();
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized(mVpns) {
+            return mVpns.get(user).getLegacyVpnInfo();
+        }
+    }
+
+    /**
+     * Returns the information of the ongoing VPN. This method is used by VpnDialogs and
+     * not available in ConnectivityManager.
+     * Permissions are checked in Vpn class.
+     * @hide
+     */
+    @Override
+    public VpnConfig getVpnConfig() {
+        int user = UserHandle.getUserId(Binder.getCallingUid());
+        synchronized(mVpns) {
+            return mVpns.get(user).getVpnConfig();
+        }
+    }
+
+    /**
+     * Callback for VPN subsystem. Currently VPN is not adapted to the service
+     * through NetworkStateTracker since it works differently. For example, it
+     * needs to override DNS servers but never takes the default routes. It
+     * relies on another data network, and it could keep existing connections
+     * alive after reconnecting, switching between networks, or even resuming
+     * from deep sleep. Calls from applications should be done synchronously
+     * to avoid race conditions. As these are all hidden APIs, refactoring can
+     * be done whenever a better abstraction is developed.
+     */
+    public class VpnCallback {
+        private VpnCallback() {
+        }
+
+        public void onStateChanged(NetworkInfo info) {
+            mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget();
+        }
+
+        public void override(String iface, List<String> dnsServers, List<String> searchDomains) {
+            if (dnsServers == null) {
+                restore();
+                return;
+            }
+
+            // Convert DNS servers into addresses.
+            List<InetAddress> addresses = new ArrayList<InetAddress>();
+            for (String address : dnsServers) {
+                // Double check the addresses and remove invalid ones.
+                try {
+                    addresses.add(InetAddress.parseNumericAddress(address));
+                } catch (Exception e) {
+                    // ignore
+                }
+            }
+            if (addresses.isEmpty()) {
+                restore();
+                return;
+            }
+
+            // Concatenate search domains into a string.
+            StringBuilder buffer = new StringBuilder();
+            if (searchDomains != null) {
+                for (String domain : searchDomains) {
+                    buffer.append(domain).append(' ');
+                }
+            }
+            String domains = buffer.toString().trim();
+
+            // Apply DNS changes.
+            synchronized (mDnsLock) {
+                // TODO: Re-enable this when the netId of the VPN is known.
+                // updateDnsLocked("VPN", netId, addresses, domains);
+            }
+
+            // Temporarily disable the default proxy (not global).
+            synchronized (mProxyLock) {
+                mDefaultProxyDisabled = true;
+                if (mGlobalProxy == null && mDefaultProxy != null) {
+                    sendProxyBroadcast(null);
+                }
+            }
+
+            // TODO: support proxy per network.
+        }
+
+        public void restore() {
+            synchronized (mProxyLock) {
+                mDefaultProxyDisabled = false;
+                if (mGlobalProxy == null && mDefaultProxy != null) {
+                    sendProxyBroadcast(mDefaultProxy);
+                }
+            }
+        }
+
+        public void protect(ParcelFileDescriptor socket) {
+            try {
+                final int mark = mNetd.getMarkForProtect();
+                NetworkUtils.markSocket(socket.getFd(), mark);
+            } catch (RemoteException e) {
+            }
+        }
+
+        public void setRoutes(String interfaze, List<RouteInfo> routes) {
+            for (RouteInfo route : routes) {
+                try {
+                    mNetd.setMarkedForwardingRoute(interfaze, route);
+                } catch (RemoteException e) {
+                }
+            }
+        }
+
+        public void setMarkedForwarding(String interfaze) {
+            try {
+                mNetd.setMarkedForwarding(interfaze);
+            } catch (RemoteException e) {
+            }
+        }
+
+        public void clearMarkedForwarding(String interfaze) {
+            try {
+                mNetd.clearMarkedForwarding(interfaze);
+            } catch (RemoteException e) {
+            }
+        }
+
+        public void addUserForwarding(String interfaze, int uid, boolean forwardDns) {
+            int uidStart = uid * UserHandle.PER_USER_RANGE;
+            int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1;
+            addUidForwarding(interfaze, uidStart, uidEnd, forwardDns);
+        }
+
+        public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) {
+            int uidStart = uid * UserHandle.PER_USER_RANGE;
+            int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1;
+            clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns);
+        }
+
+        public void addUidForwarding(String interfaze, int uidStart, int uidEnd,
+                boolean forwardDns) {
+            // TODO: Re-enable this when the netId of the VPN is known.
+            // try {
+            //     mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns);
+            // } catch (RemoteException e) {
+            // }
+
+        }
+
+        public void clearUidForwarding(String interfaze, int uidStart, int uidEnd,
+                boolean forwardDns) {
+            // TODO: Re-enable this when the netId of the VPN is known.
+            // try {
+            //     mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd);
+            // } catch (RemoteException e) {
+            // }
+
+        }
+    }
+
+    @Override
+    public boolean updateLockdownVpn() {
+        if (Binder.getCallingUid() != Process.SYSTEM_UID) {
+            Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM");
+            return false;
+        }
+
+        // Tear down existing lockdown if profile was removed
+        mLockdownEnabled = LockdownVpnTracker.isEnabled();
+        if (mLockdownEnabled) {
+            if (!mKeyStore.isUnlocked()) {
+                Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker");
+                return false;
+            }
+
+            final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN));
+            final VpnProfile profile = VpnProfile.decode(
+                    profileName, mKeyStore.get(Credentials.VPN + profileName));
+            int user = UserHandle.getUserId(Binder.getCallingUid());
+            synchronized(mVpns) {
+                setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user),
+                            profile));
+            }
+        } else {
+            setLockdownTracker(null);
+        }
+
+        return true;
+    }
+
+    /**
+     * Internally set new {@link LockdownVpnTracker}, shutting down any existing
+     * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown.
+     */
+    private void setLockdownTracker(LockdownVpnTracker tracker) {
+        // Shutdown any existing tracker
+        final LockdownVpnTracker existing = mLockdownTracker;
+        mLockdownTracker = null;
+        if (existing != null) {
+            existing.shutdown();
+        }
+
+        try {
+            if (tracker != null) {
+                mNetd.setFirewallEnabled(true);
+                mNetd.setFirewallInterfaceRule("lo", true);
+                mLockdownTracker = tracker;
+                mLockdownTracker.init();
+            } else {
+                mNetd.setFirewallEnabled(false);
+            }
+        } catch (RemoteException e) {
+            // ignored; NMS lives inside system_server
+        }
+    }
+
+    private void throwIfLockdownEnabled() {
+        if (mLockdownEnabled) {
+            throw new IllegalStateException("Unavailable in lockdown mode");
+        }
+    }
+
+    public void supplyMessenger(int networkType, Messenger messenger) {
+        enforceConnectivityInternalPermission();
+
+        if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
+            mNetTrackers[networkType].supplyMessenger(messenger);
+        }
+    }
+
+    public int findConnectionTypeForIface(String iface) {
+        enforceConnectivityInternalPermission();
+
+        if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE;
+        for (NetworkStateTracker tracker : mNetTrackers) {
+            if (tracker != null) {
+                LinkProperties lp = tracker.getLinkProperties();
+                if (lp != null && iface.equals(lp.getInterfaceName())) {
+                    return tracker.getNetworkInfo().getType();
+                }
+            }
+        }
+        return ConnectivityManager.TYPE_NONE;
+    }
+
+    /**
+     * Have mobile data fail fast if enabled.
+     *
+     * @param enabled DctConstants.ENABLED/DISABLED
+     */
+    private void setEnableFailFastMobileData(int enabled) {
+        int tag;
+
+        if (enabled == DctConstants.ENABLED) {
+            tag = mEnableFailFastMobileDataTag.incrementAndGet();
+        } else {
+            tag = mEnableFailFastMobileDataTag.get();
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag,
+                         enabled));
+    }
+
+    private boolean isMobileDataStateTrackerReady() {
+        MobileDataStateTracker mdst =
+                (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
+        return (mdst != null) && (mdst.isReady());
+    }
+
+    /**
+     * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE)
+     */
+
+    /**
+     * No connection was possible to the network.
+     * This is NOT a warm sim.
+     */
+    private static final int CMP_RESULT_CODE_NO_CONNECTION = 0;
+
+    /**
+     * A connection was made to the internet, all is well.
+     * This is NOT a warm sim.
+     */
+    private static final int CMP_RESULT_CODE_CONNECTABLE = 1;
+
+    /**
+     * A connection was made but no dns server was available to resolve a name to address.
+     * This is NOT a warm sim since provisioning network is supported.
+     */
+    private static final int CMP_RESULT_CODE_NO_DNS = 2;
+
+    /**
+     * A connection was made but could not open a TCP connection.
+     * This is NOT a warm sim since provisioning network is supported.
+     */
+    private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3;
+
+    /**
+     * A connection was made but there was a redirection, we appear to be in walled garden.
+     * This is an indication of a warm sim on a mobile network such as T-Mobile.
+     */
+    private static final int CMP_RESULT_CODE_REDIRECTED = 4;
+
+    /**
+     * The mobile network is a provisioning network.
+     * This is an indication of a warm sim on a mobile network such as AT&T.
+     */
+    private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5;
+
+    /**
+     * The mobile network is provisioning
+     */
+    private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6;
+
+    private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false);
+    private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false);
+
+    private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false);
+
+    @Override
+    public int checkMobileProvisioning(int suggestedTimeOutMs) {
+        int timeOutMs = -1;
+        if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs);
+        enforceConnectivityInternalPermission();
+
+        final long token = Binder.clearCallingIdentity();
+        try {
+            timeOutMs = suggestedTimeOutMs;
+            if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) {
+                timeOutMs = CheckMp.MAX_TIMEOUT_MS;
+            }
+
+            // Check that mobile networks are supported
+            if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE)
+                    || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) {
+                if (DBG) log("checkMobileProvisioning: X no mobile network");
+                return timeOutMs;
+            }
+
+            // If we're already checking don't do it again
+            // TODO: Add a queue of results...
+            if (mIsCheckingMobileProvisioning.getAndSet(true)) {
+                if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment");
+                return timeOutMs;
+            }
+
+            // Start off with mobile notification off
+            setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
+
+            CheckMp checkMp = new CheckMp(mContext, this);
+            CheckMp.CallBack cb = new CheckMp.CallBack() {
+                @Override
+                void onComplete(Integer result) {
+                    if (DBG) log("CheckMp.onComplete: result=" + result);
+                    NetworkInfo ni =
+                            mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo();
+                    switch(result) {
+                        case CMP_RESULT_CODE_CONNECTABLE:
+                        case CMP_RESULT_CODE_NO_CONNECTION:
+                        case CMP_RESULT_CODE_NO_DNS:
+                        case CMP_RESULT_CODE_NO_TCP_CONNECTION: {
+                            if (DBG) log("CheckMp.onComplete: ignore, connected or no connection");
+                            break;
+                        }
+                        case CMP_RESULT_CODE_REDIRECTED: {
+                            if (DBG) log("CheckMp.onComplete: warm sim");
+                            String url = getMobileProvisioningUrl();
+                            if (TextUtils.isEmpty(url)) {
+                                url = getMobileRedirectedProvisioningUrl();
+                            }
+                            if (TextUtils.isEmpty(url) == false) {
+                                if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url);
+                                setProvNotificationVisible(true,
+                                        ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(),
+                                        url);
+                            } else {
+                                if (DBG) log("CheckMp.onComplete: warm (redirected), no url");
+                            }
+                            break;
+                        }
+                        case CMP_RESULT_CODE_PROVISIONING_NETWORK: {
+                            String url = getMobileProvisioningUrl();
+                            if (TextUtils.isEmpty(url) == false) {
+                                if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url);
+                                setProvNotificationVisible(true,
+                                        ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(),
+                                        url);
+                                // Mark that we've got a provisioning network and
+                                // Disable Mobile Data until user actually starts provisioning.
+                                mIsProvisioningNetwork.set(true);
+                                MobileDataStateTracker mdst = (MobileDataStateTracker)
+                                        mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+
+                                // Disable radio until user starts provisioning
+                                mdst.setRadio(false);
+                            } else {
+                                if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url");
+                            }
+                            break;
+                        }
+                        case CMP_RESULT_CODE_IS_PROVISIONING: {
+                            // FIXME: Need to know when provisioning is done. Probably we can
+                            // check the completion status if successful we're done if we
+                            // "timedout" or still connected to provisioning APN turn off data?
+                            if (DBG) log("CheckMp.onComplete: provisioning started");
+                            mIsStartingProvisioning.set(false);
+                            break;
+                        }
+                        default: {
+                            loge("CheckMp.onComplete: ignore unexpected result=" + result);
+                            break;
+                        }
+                    }
+                    mIsCheckingMobileProvisioning.set(false);
+                }
+            };
+            CheckMp.Params params =
+                    new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb);
+            if (DBG) log("checkMobileProvisioning: params=" + params);
+            // TODO: Reenable when calls to the now defunct
+            //       MobileDataStateTracker.isProvisioningNetwork() are removed.
+            //       This code should be moved to the Telephony code.
+            // checkMp.execute(params);
+        } finally {
+            Binder.restoreCallingIdentity(token);
+            if (DBG) log("checkMobileProvisioning: X");
+        }
+        return timeOutMs;
+    }
+
+    static class CheckMp extends
+            AsyncTask<CheckMp.Params, Void, Integer> {
+        private static final String CHECKMP_TAG = "CheckMp";
+
+        // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures
+        private static boolean mTestingFailures;
+
+        // Choosing 4 loops as half of them will use HTTPS and the other half HTTP
+        private static final int MAX_LOOPS = 4;
+
+        // Number of milli-seconds to complete all of the retires
+        public static final int MAX_TIMEOUT_MS =  60000;
+
+        // The socket should retry only 5 seconds, the default is longer
+        private static final int SOCKET_TIMEOUT_MS = 5000;
+
+        // Sleep time for network errors
+        private static final int NET_ERROR_SLEEP_SEC = 3;
+
+        // Sleep time for network route establishment
+        private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3;
+
+        // Short sleep time for polling :(
+        private static final int POLLING_SLEEP_SEC = 1;
+
+        private Context mContext;
+        private ConnectivityService mCs;
+        private TelephonyManager mTm;
+        private Params mParams;
+
+        /**
+         * Parameters for AsyncTask.execute
+         */
+        static class Params {
+            private String mUrl;
+            private long mTimeOutMs;
+            private CallBack mCb;
+
+            Params(String url, long timeOutMs, CallBack cb) {
+                mUrl = url;
+                mTimeOutMs = timeOutMs;
+                mCb = cb;
+            }
+
+            @Override
+            public String toString() {
+                return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}";
+            }
+        }
+
+        // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be
+        // issued by name or ip address, for Google its by name so when we construct
+        // this HostnameVerifier we'll pass the original Uri and use it to verify
+        // the host. If the host name in the original uril fails we'll test the
+        // hostname parameter just incase things change.
+        static class CheckMpHostnameVerifier implements HostnameVerifier {
+            Uri mOrgUri;
+
+            CheckMpHostnameVerifier(Uri orgUri) {
+                mOrgUri = orgUri;
+            }
+
+            @Override
+            public boolean verify(String hostname, SSLSession session) {
+                HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier();
+                String orgUriHost = mOrgUri.getHost();
+                boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session);
+                if (DBG) {
+                    log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname
+                        + " orgUriHost=" + orgUriHost);
+                }
+                return retVal;
+            }
+        }
+
+        /**
+         * The call back object passed in Params. onComplete will be called
+         * on the main thread.
+         */
+        abstract static class CallBack {
+            // Called on the main thread.
+            abstract void onComplete(Integer result);
+        }
+
+        public CheckMp(Context context, ConnectivityService cs) {
+            if (Build.IS_DEBUGGABLE) {
+                mTestingFailures =
+                        SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1;
+            } else {
+                mTestingFailures = false;
+            }
+
+            mContext = context;
+            mCs = cs;
+
+            // Setup access to TelephonyService we'll be using.
+            mTm = (TelephonyManager) mContext.getSystemService(
+                    Context.TELEPHONY_SERVICE);
+        }
+
+        /**
+         * Get the default url to use for the test.
+         */
+        public String getDefaultUrl() {
+            // See http://go/clientsdns for usage approval
+            String server = Settings.Global.getString(mContext.getContentResolver(),
+                    Settings.Global.CAPTIVE_PORTAL_SERVER);
+            if (server == null) {
+                server = "clients3.google.com";
+            }
+            return "http://" + server + "/generate_204";
+        }
+
+        /**
+         * Detect if its possible to connect to the http url. DNS based detection techniques
+         * do not work at all hotspots. The best way to check is to perform a request to
+         * a known address that fetches the data we expect.
+         */
+        private synchronized Integer isMobileOk(Params params) {
+            Integer result = CMP_RESULT_CODE_NO_CONNECTION;
+            Uri orgUri = Uri.parse(params.mUrl);
+            Random rand = new Random();
+            mParams = params;
+
+            if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) {
+                result = CMP_RESULT_CODE_NO_CONNECTION;
+                log("isMobileOk: X not mobile capable result=" + result);
+                return result;
+            }
+
+            if (mCs.mIsStartingProvisioning.get()) {
+                result = CMP_RESULT_CODE_IS_PROVISIONING;
+                log("isMobileOk: X is provisioning result=" + result);
+                return result;
+            }
+
+            // See if we've already determined we've got a provisioning connection,
+            // if so we don't need to do anything active.
+            MobileDataStateTracker mdstDefault = (MobileDataStateTracker)
+                    mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+            boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork();
+            log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning);
+
+            MobileDataStateTracker mdstHipri = (MobileDataStateTracker)
+                    mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
+            boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork();
+            log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning);
+
+            if (isDefaultProvisioning || isHipriProvisioning) {
+                result = CMP_RESULT_CODE_PROVISIONING_NETWORK;
+                log("isMobileOk: X default || hipri is provisioning result=" + result);
+                return result;
+            }
+
+            try {
+                // Continue trying to connect until time has run out
+                long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs;
+
+                if (!mCs.isMobileDataStateTrackerReady()) {
+                    // Wait for MobileDataStateTracker to be ready.
+                    if (DBG) log("isMobileOk: mdst is not ready");
+                    while(SystemClock.elapsedRealtime() < endTime) {
+                        if (mCs.isMobileDataStateTrackerReady()) {
+                            // Enable fail fast as we'll do retries here and use a
+                            // hipri connection so the default connection stays active.
+                            if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data");
+                            mCs.setEnableFailFastMobileData(DctConstants.ENABLED);
+                            break;
+                        }
+                        sleep(POLLING_SLEEP_SEC);
+                    }
+                }
+
+                log("isMobileOk: start hipri url=" + params.mUrl);
+
+                // First wait until we can start using hipri
+                Binder binder = new Binder();
+                while(SystemClock.elapsedRealtime() < endTime) {
+                    int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
+                            Phone.FEATURE_ENABLE_HIPRI, binder);
+                    if ((ret == PhoneConstants.APN_ALREADY_ACTIVE)
+                        || (ret == PhoneConstants.APN_REQUEST_STARTED)) {
+                            log("isMobileOk: hipri started");
+                            break;
+                    }
+                    if (VDBG) log("isMobileOk: hipri not started yet");
+                    result = CMP_RESULT_CODE_NO_CONNECTION;
+                    sleep(POLLING_SLEEP_SEC);
+                }
+
+                // Continue trying to connect until time has run out
+                while(SystemClock.elapsedRealtime() < endTime) {
+                    try {
+                        // Wait for hipri to connect.
+                        // TODO: Don't poll and handle situation where hipri fails
+                        // because default is retrying. See b/9569540
+                        NetworkInfo.State state = mCs
+                                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState();
+                        if (state != NetworkInfo.State.CONNECTED) {
+                            if (true/*VDBG*/) {
+                                log("isMobileOk: not connected ni=" +
+                                    mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI));
+                            }
+                            sleep(POLLING_SLEEP_SEC);
+                            result = CMP_RESULT_CODE_NO_CONNECTION;
+                            continue;
+                        }
+
+                        // Hipri has started check if this is a provisioning url
+                        MobileDataStateTracker mdst = (MobileDataStateTracker)
+                                mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
+                        if (mdst.isProvisioningNetwork()) {
+                            result = CMP_RESULT_CODE_PROVISIONING_NETWORK;
+                            if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result);
+                            return result;
+                        } else {
+                            if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue");
+                        }
+
+                        // Get of the addresses associated with the url host. We need to use the
+                        // address otherwise HttpURLConnection object will use the name to get
+                        // the addresses and will try every address but that will bypass the
+                        // route to host we setup and the connection could succeed as the default
+                        // interface might be connected to the internet via wifi or other interface.
+                        InetAddress[] addresses;
+                        try {
+                            addresses = InetAddress.getAllByName(orgUri.getHost());
+                        } catch (UnknownHostException e) {
+                            result = CMP_RESULT_CODE_NO_DNS;
+                            log("isMobileOk: X UnknownHostException result=" + result);
+                            return result;
+                        }
+                        log("isMobileOk: addresses=" + inetAddressesToString(addresses));
+
+                        // Get the type of addresses supported by this link
+                        LinkProperties lp = mCs.getLinkPropertiesForTypeInternal(
+                                ConnectivityManager.TYPE_MOBILE_HIPRI);
+                        boolean linkHasIpv4 = lp.hasIPv4Address();
+                        boolean linkHasIpv6 = lp.hasIPv6Address();
+                        log("isMobileOk: linkHasIpv4=" + linkHasIpv4
+                                + " linkHasIpv6=" + linkHasIpv6);
+
+                        final ArrayList<InetAddress> validAddresses =
+                                new ArrayList<InetAddress>(addresses.length);
+
+                        for (InetAddress addr : addresses) {
+                            if (((addr instanceof Inet4Address) && linkHasIpv4) ||
+                                    ((addr instanceof Inet6Address) && linkHasIpv6)) {
+                                validAddresses.add(addr);
+                            }
+                        }
+
+                        if (validAddresses.size() == 0) {
+                            return CMP_RESULT_CODE_NO_CONNECTION;
+                        }
+
+                        int addrTried = 0;
+                        while (true) {
+                            // Loop through at most MAX_LOOPS valid addresses or until
+                            // we run out of time
+                            if (addrTried++ >= MAX_LOOPS) {
+                                log("isMobileOk: too many loops tried - giving up");
+                                break;
+                            }
+                            if (SystemClock.elapsedRealtime() >= endTime) {
+                                log("isMobileOk: spend too much time - giving up");
+                                break;
+                            }
+
+                            InetAddress hostAddr = validAddresses.get(rand.nextInt(
+                                    validAddresses.size()));
+
+                            // Make a route to host so we check the specific interface.
+                            if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI,
+                                    hostAddr.getAddress(), null)) {
+                                // Wait a short time to be sure the route is established ??
+                                log("isMobileOk:"
+                                        + " wait to establish route to hostAddr=" + hostAddr);
+                                sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC);
+                            } else {
+                                log("isMobileOk:"
+                                        + " could not establish route to hostAddr=" + hostAddr);
+                                // Wait a short time before the next attempt
+                                sleep(NET_ERROR_SLEEP_SEC);
+                                continue;
+                            }
+
+                            // Rewrite the url to have numeric address to use the specific route
+                            // using http for half the attempts and https for the other half.
+                            // Doing https first and http second as on a redirected walled garden
+                            // such as t-mobile uses we get a SocketTimeoutException: "SSL
+                            // handshake timed out" which we declare as
+                            // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by
+                            // having http second we will be using logic used for some time.
+                            URL newUrl;
+                            String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http";
+                            newUrl = new URL(scheme, hostAddr.getHostAddress(),
+                                        orgUri.getPath());
+                            log("isMobileOk: newUrl=" + newUrl);
+
+                            HttpURLConnection urlConn = null;
+                            try {
+                                // Open the connection set the request headers and get the response
+                                urlConn = (HttpURLConnection)newUrl.openConnection(
+                                        java.net.Proxy.NO_PROXY);
+                                if (scheme.equals("https")) {
+                                    ((HttpsURLConnection)urlConn).setHostnameVerifier(
+                                            new CheckMpHostnameVerifier(orgUri));
+                                }
+                                urlConn.setInstanceFollowRedirects(false);
+                                urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS);
+                                urlConn.setReadTimeout(SOCKET_TIMEOUT_MS);
+                                urlConn.setUseCaches(false);
+                                urlConn.setAllowUserInteraction(false);
+                                // Set the "Connection" to "Close" as by default "Keep-Alive"
+                                // is used which is useless in this case.
+                                urlConn.setRequestProperty("Connection", "close");
+                                int responseCode = urlConn.getResponseCode();
+
+                                // For debug display the headers
+                                Map<String, List<String>> headers = urlConn.getHeaderFields();
+                                log("isMobileOk: headers=" + headers);
+
+                                // Close the connection
+                                urlConn.disconnect();
+                                urlConn = null;
+
+                                if (mTestingFailures) {
+                                    // Pretend no connection, this tests using http and https
+                                    result = CMP_RESULT_CODE_NO_CONNECTION;
+                                    log("isMobileOk: TESTING_FAILURES, pretend no connction");
+                                    continue;
+                                }
+
+                                if (responseCode == 204) {
+                                    // Return
+                                    result = CMP_RESULT_CODE_CONNECTABLE;
+                                    log("isMobileOk: X got expected responseCode=" + responseCode
+                                            + " result=" + result);
+                                    return result;
+                                } else {
+                                    // Retry to be sure this was redirected, we've gotten
+                                    // occasions where a server returned 200 even though
+                                    // the device didn't have a "warm" sim.
+                                    log("isMobileOk: not expected responseCode=" + responseCode);
+                                    // TODO - it would be nice in the single-address case to do
+                                    // another DNS resolve here, but flushing the cache is a bit
+                                    // heavy-handed.
+                                    result = CMP_RESULT_CODE_REDIRECTED;
+                                }
+                            } catch (Exception e) {
+                                log("isMobileOk: HttpURLConnection Exception" + e);
+                                result = CMP_RESULT_CODE_NO_TCP_CONNECTION;
+                                if (urlConn != null) {
+                                    urlConn.disconnect();
+                                    urlConn = null;
+                                }
+                                sleep(NET_ERROR_SLEEP_SEC);
+                                continue;
+                            }
+                        }
+                        log("isMobileOk: X loops|timed out result=" + result);
+                        return result;
+                    } catch (Exception e) {
+                        log("isMobileOk: Exception e=" + e);
+                        continue;
+                    }
+                }
+                log("isMobileOk: timed out");
+            } finally {
+                log("isMobileOk: F stop hipri");
+                mCs.setEnableFailFastMobileData(DctConstants.DISABLED);
+                mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
+                        Phone.FEATURE_ENABLE_HIPRI);
+
+                // Wait for hipri to disconnect.
+                long endTime = SystemClock.elapsedRealtime() + 5000;
+
+                while(SystemClock.elapsedRealtime() < endTime) {
+                    NetworkInfo.State state = mCs
+                            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState();
+                    if (state != NetworkInfo.State.DISCONNECTED) {
+                        if (VDBG) {
+                            log("isMobileOk: connected ni=" +
+                                mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI));
+                        }
+                        sleep(POLLING_SLEEP_SEC);
+                        continue;
+                    }
+                }
+
+                log("isMobileOk: X result=" + result);
+            }
+            return result;
+        }
+
+        @Override
+        protected Integer doInBackground(Params... params) {
+            return isMobileOk(params[0]);
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+            log("onPostExecute: result=" + result);
+            if ((mParams != null) && (mParams.mCb != null)) {
+                mParams.mCb.onComplete(result);
+            }
+        }
+
+        private String inetAddressesToString(InetAddress[] addresses) {
+            StringBuffer sb = new StringBuffer();
+            boolean firstTime = true;
+            for(InetAddress addr : addresses) {
+                if (firstTime) {
+                    firstTime = false;
+                } else {
+                    sb.append(",");
+                }
+                sb.append(addr);
+            }
+            return sb.toString();
+        }
+
+        private void printNetworkInfo() {
+            boolean hasIccCard = mTm.hasIccCard();
+            int simState = mTm.getSimState();
+            log("hasIccCard=" + hasIccCard
+                    + " simState=" + simState);
+            NetworkInfo[] ni = mCs.getAllNetworkInfo();
+            if (ni != null) {
+                log("ni.length=" + ni.length);
+                for (NetworkInfo netInfo: ni) {
+                    log("netInfo=" + netInfo.toString());
+                }
+            } else {
+                log("no network info ni=null");
+            }
+        }
+
+        /**
+         * Sleep for a few seconds then return.
+         * @param seconds
+         */
+        private static void sleep(int seconds) {
+            long stopTime = System.nanoTime() + (seconds * 1000000000);
+            long sleepTime;
+            while ((sleepTime = stopTime - System.nanoTime()) > 0) {
+                try {
+                    Thread.sleep(sleepTime / 1000000);
+                } catch (InterruptedException ignored) {
+                }
+            }
+        }
+
+        private static void log(String s) {
+            Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s);
+        }
+    }
+
+    // TODO: Move to ConnectivityManager and make public?
+    private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION =
+            "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION";
+
+    private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) {
+                handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL"));
+            }
+        }
+    };
+
+    private void handleMobileProvisioningAction(String url) {
+        // Mark notification as not visible
+        setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
+
+        // Check airplane mode
+        boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.Global.AIRPLANE_MODE_ON, 0) == 1;
+        // If provisioning network and not in airplane mode handle as a special case,
+        // otherwise launch browser with the intent directly.
+        if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) {
+            if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch");
+            mIsProvisioningNetwork.set(false);
+//            mIsStartingProvisioning.set(true);
+//            MobileDataStateTracker mdst = (MobileDataStateTracker)
+//                    mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+            // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here
+//            mdst.setRadio(true);
+//            mdst.setEnableFailFastMobileData(DctConstants.ENABLED);
+//            mdst.enableMobileProvisioning(url);
+        } else {
+            if (DBG) log("handleMobileProvisioningAction: not prov network");
+            mIsProvisioningNetwork.set(false);
+            // Check for  apps that can handle provisioning first
+            Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP);
+            provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX
+                    + mTelephonyManager.getSimOperator());
+            if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */)
+                    != null) {
+                provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                        Intent.FLAG_ACTIVITY_NEW_TASK);
+                mContext.startActivity(provisioningIntent);
+            } else {
+                // If no apps exist, use standard URL ACTION_VIEW method
+                Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
+                        Intent.CATEGORY_APP_BROWSER);
+                newIntent.setData(Uri.parse(url));
+                newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                        Intent.FLAG_ACTIVITY_NEW_TASK);
+                try {
+                    mContext.startActivity(newIntent);
+                } catch (ActivityNotFoundException e) {
+                    loge("handleMobileProvisioningAction: startActivity failed" + e);
+                }
+            }
+        }
+    }
+
+    private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
+    private volatile boolean mIsNotificationVisible = false;
+
+    private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo,
+            String url) {
+        if (DBG) {
+            log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType
+                + " extraInfo=" + extraInfo + " url=" + url);
+        }
+
+        Resources r = Resources.getSystem();
+        NotificationManager notificationManager = (NotificationManager) mContext
+            .getSystemService(Context.NOTIFICATION_SERVICE);
+
+        if (visible) {
+            CharSequence title;
+            CharSequence details;
+            int icon;
+            Intent intent;
+            Notification notification = new Notification();
+            switch (networkType) {
+                case ConnectivityManager.TYPE_WIFI:
+                    title = r.getString(R.string.wifi_available_sign_in, 0);
+                    details = r.getString(R.string.network_available_sign_in_detailed,
+                            extraInfo);
+                    icon = R.drawable.stat_notify_wifi_in_range;
+                    intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+                    intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                            Intent.FLAG_ACTIVITY_NEW_TASK);
+                    notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
+                    break;
+                case ConnectivityManager.TYPE_MOBILE:
+                case ConnectivityManager.TYPE_MOBILE_HIPRI:
+                    title = r.getString(R.string.network_available_sign_in, 0);
+                    // TODO: Change this to pull from NetworkInfo once a printable
+                    // name has been added to it
+                    details = mTelephonyManager.getNetworkOperatorName();
+                    icon = R.drawable.stat_notify_rssi_in_range;
+                    intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION);
+                    intent.putExtra("EXTRA_URL", url);
+                    intent.setFlags(0);
+                    notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
+                    break;
+                default:
+                    title = r.getString(R.string.network_available_sign_in, 0);
+                    details = r.getString(R.string.network_available_sign_in_detailed,
+                            extraInfo);
+                    icon = R.drawable.stat_notify_rssi_in_range;
+                    intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+                    intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                            Intent.FLAG_ACTIVITY_NEW_TASK);
+                    notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
+                    break;
+            }
+
+            notification.when = 0;
+            notification.icon = icon;
+            notification.flags = Notification.FLAG_AUTO_CANCEL;
+            notification.tickerText = title;
+            notification.setLatestEventInfo(mContext, title, details, notification.contentIntent);
+
+            try {
+                notificationManager.notify(NOTIFICATION_ID, networkType, notification);
+            } catch (NullPointerException npe) {
+                loge("setNotificaitionVisible: visible notificationManager npe=" + npe);
+                npe.printStackTrace();
+            }
+        } else {
+            try {
+                notificationManager.cancel(NOTIFICATION_ID, networkType);
+            } catch (NullPointerException npe) {
+                loge("setNotificaitionVisible: cancel notificationManager npe=" + npe);
+                npe.printStackTrace();
+            }
+        }
+        mIsNotificationVisible = visible;
+    }
+
+    /** Location to an updatable file listing carrier provisioning urls.
+     *  An example:
+     *
+     * <?xml version="1.0" encoding="utf-8"?>
+     *  <provisioningUrls>
+     *   <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&amp;iccid=%1$s&amp;imei=%2$s</provisioningUrl>
+     *   <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl>
+     *  </provisioningUrls>
+     */
+    private static final String PROVISIONING_URL_PATH =
+            "/data/misc/radio/provisioning_urls.xml";
+    private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH);
+
+    /** XML tag for root element. */
+    private static final String TAG_PROVISIONING_URLS = "provisioningUrls";
+    /** XML tag for individual url */
+    private static final String TAG_PROVISIONING_URL = "provisioningUrl";
+    /** XML tag for redirected url */
+    private static final String TAG_REDIRECTED_URL = "redirectedUrl";
+    /** XML attribute for mcc */
+    private static final String ATTR_MCC = "mcc";
+    /** XML attribute for mnc */
+    private static final String ATTR_MNC = "mnc";
+
+    private static final int REDIRECTED_PROVISIONING = 1;
+    private static final int PROVISIONING = 2;
+
+    private String getProvisioningUrlBaseFromFile(int type) {
+        FileReader fileReader = null;
+        XmlPullParser parser = null;
+        Configuration config = mContext.getResources().getConfiguration();
+        String tagType;
+
+        switch (type) {
+            case PROVISIONING:
+                tagType = TAG_PROVISIONING_URL;
+                break;
+            case REDIRECTED_PROVISIONING:
+                tagType = TAG_REDIRECTED_URL;
+                break;
+            default:
+                throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " +
+                        type);
+        }
+
+        try {
+            fileReader = new FileReader(mProvisioningUrlFile);
+            parser = Xml.newPullParser();
+            parser.setInput(fileReader);
+            XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS);
+
+            while (true) {
+                XmlUtils.nextElement(parser);
+
+                String element = parser.getName();
+                if (element == null) break;
+
+                if (element.equals(tagType)) {
+                    String mcc = parser.getAttributeValue(null, ATTR_MCC);
+                    try {
+                        if (mcc != null && Integer.parseInt(mcc) == config.mcc) {
+                            String mnc = parser.getAttributeValue(null, ATTR_MNC);
+                            if (mnc != null && Integer.parseInt(mnc) == config.mnc) {
+                                parser.next();
+                                if (parser.getEventType() == XmlPullParser.TEXT) {
+                                    return parser.getText();
+                                }
+                            }
+                        }
+                    } catch (NumberFormatException e) {
+                        loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e);
+                    }
+                }
+            }
+            return null;
+        } catch (FileNotFoundException e) {
+            loge("Carrier Provisioning Urls file not found");
+        } catch (XmlPullParserException e) {
+            loge("Xml parser exception reading Carrier Provisioning Urls file: " + e);
+        } catch (IOException e) {
+            loge("I/O exception reading Carrier Provisioning Urls file: " + e);
+        } finally {
+            if (fileReader != null) {
+                try {
+                    fileReader.close();
+                } catch (IOException e) {}
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public String getMobileRedirectedProvisioningUrl() {
+        enforceConnectivityInternalPermission();
+        String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING);
+        if (TextUtils.isEmpty(url)) {
+            url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url);
+        }
+        return url;
+    }
+
+    @Override
+    public String getMobileProvisioningUrl() {
+        enforceConnectivityInternalPermission();
+        String url = getProvisioningUrlBaseFromFile(PROVISIONING);
+        if (TextUtils.isEmpty(url)) {
+            url = mContext.getResources().getString(R.string.mobile_provisioning_url);
+            log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url);
+        } else {
+            log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url);
+        }
+        // populate the iccid, imei and phone number in the provisioning url.
+        if (!TextUtils.isEmpty(url)) {
+            String phoneNumber = mTelephonyManager.getLine1Number();
+            if (TextUtils.isEmpty(phoneNumber)) {
+                phoneNumber = "0000000000";
+            }
+            url = String.format(url,
+                    mTelephonyManager.getSimSerialNumber() /* ICCID */,
+                    mTelephonyManager.getDeviceId() /* IMEI */,
+                    phoneNumber /* Phone numer */);
+        }
+
+        return url;
+    }
+
+    @Override
+    public void setProvisioningNotificationVisible(boolean visible, int networkType,
+            String extraInfo, String url) {
+        enforceConnectivityInternalPermission();
+        setProvNotificationVisible(visible, networkType, extraInfo, url);
+    }
+
+    @Override
+    public void setAirplaneMode(boolean enable) {
+        enforceConnectivityInternalPermission();
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            final ContentResolver cr = mContext.getContentResolver();
+            Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0);
+            Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+            intent.putExtra("state", enable);
+            mContext.sendBroadcast(intent);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
+    }
+
+    private void onUserStart(int userId) {
+        synchronized(mVpns) {
+            Vpn userVpn = mVpns.get(userId);
+            if (userVpn != null) {
+                loge("Starting user already has a VPN");
+                return;
+            }
+            userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId);
+            mVpns.put(userId, userVpn);
+            userVpn.startMonitoring(mContext, mTrackerHandler);
+        }
+    }
+
+    private void onUserStop(int userId) {
+        synchronized(mVpns) {
+            Vpn userVpn = mVpns.get(userId);
+            if (userVpn == null) {
+                loge("Stopping user has no VPN");
+                return;
+            }
+            mVpns.delete(userId);
+        }
+    }
+
+    private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            final String action = intent.getAction();
+            final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
+            if (userId == UserHandle.USER_NULL) return;
+
+            if (Intent.ACTION_USER_STARTING.equals(action)) {
+                onUserStart(userId);
+            } else if (Intent.ACTION_USER_STOPPING.equals(action)) {
+                onUserStop(userId);
+            }
+        }
+    };
+
+    @Override
+    public LinkQualityInfo getLinkQualityInfo(int networkType) {
+        enforceAccessPermission();
+        if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
+            return mNetTrackers[networkType].getLinkQualityInfo();
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public LinkQualityInfo getActiveLinkQualityInfo() {
+        enforceAccessPermission();
+        if (isNetworkTypeValid(mActiveDefaultNetwork) &&
+                mNetTrackers[mActiveDefaultNetwork] != null) {
+            return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo();
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public LinkQualityInfo[] getAllLinkQualityInfo() {
+        enforceAccessPermission();
+        final ArrayList<LinkQualityInfo> result = Lists.newArrayList();
+        for (NetworkStateTracker tracker : mNetTrackers) {
+            if (tracker != null) {
+                LinkQualityInfo li = tracker.getLinkQualityInfo();
+                if (li != null) {
+                    result.add(li);
+                }
+            }
+        }
+
+        return result.toArray(new LinkQualityInfo[result.size()]);
+    }
+
+    /* Infrastructure for network sampling */
+
+    private void handleNetworkSamplingTimeout() {
+
+        log("Sampling interval elapsed, updating statistics ..");
+
+        // initialize list of interfaces ..
+        Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample =
+                new HashMap<String, SamplingDataTracker.SamplingSnapshot>();
+        for (NetworkStateTracker tracker : mNetTrackers) {
+            if (tracker != null) {
+                String ifaceName = tracker.getNetworkInterfaceName();
+                if (ifaceName != null) {
+                    mapIfaceToSample.put(ifaceName, null);
+                }
+            }
+        }
+
+        // Read samples for all interfaces
+        SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample);
+
+        // process samples for all networks
+        for (NetworkStateTracker tracker : mNetTrackers) {
+            if (tracker != null) {
+                String ifaceName = tracker.getNetworkInterfaceName();
+                SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName);
+                if (ss != null) {
+                    // end the previous sampling cycle
+                    tracker.stopSampling(ss);
+                    // start a new sampling cycle ..
+                    tracker.startSampling(ss);
+                }
+            }
+        }
+
+        log("Done.");
+
+        int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS,
+                DEFAULT_SAMPLING_INTERVAL_IN_SECONDS);
+
+        if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds");
+
+        setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent);
+    }
+
+    void setAlarm(int timeoutInMilliseconds, PendingIntent intent) {
+        long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds;
+        mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent);
+    }
+
+    private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos =
+            new HashMap<Messenger, NetworkFactoryInfo>();
+    private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests =
+            new HashMap<NetworkRequest, NetworkRequestInfo>();
+
+    private static class NetworkFactoryInfo {
+        public final String name;
+        public final Messenger messenger;
+        public final AsyncChannel asyncChannel;
+
+        public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) {
+            this.name = name;
+            this.messenger = messenger;
+            this.asyncChannel = asyncChannel;
+        }
+    }
+
+    private class NetworkRequestInfo implements IBinder.DeathRecipient {
+        static final boolean REQUEST = true;
+        static final boolean LISTEN = false;
+
+        final NetworkRequest request;
+        IBinder mBinder;
+        final int mPid;
+        final int mUid;
+        final Messenger messenger;
+        final boolean isRequest;
+
+        NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) {
+            super();
+            messenger = m;
+            request = r;
+            mBinder = binder;
+            mPid = getCallingPid();
+            mUid = getCallingUid();
+            this.isRequest = isRequest;
+
+            try {
+                mBinder.linkToDeath(this, 0);
+            } catch (RemoteException e) {
+                binderDied();
+            }
+        }
+
+        void unlinkDeathRecipient() {
+            mBinder.unlinkToDeath(this, 0);
+        }
+
+        public void binderDied() {
+            log("ConnectivityService NetworkRequestInfo binderDied(" +
+                    request + ", " + mBinder + ")");
+            releaseNetworkRequest(request);
+        }
+
+        public String toString() {
+            return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" +
+                    mPid + " for " + request;
+        }
+    }
+
+    @Override
+    public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities,
+            Messenger messenger, int timeoutSec, IBinder binder, int legacyType) {
+        if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+                == false) {
+            enforceConnectivityInternalPermission();
+        } else {
+            enforceChangePermission();
+        }
+
+        if (timeoutSec < 0 || timeoutSec > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_SEC) {
+            throw new IllegalArgumentException("Bad timeout specified");
+        }
+        NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
+                networkCapabilities), legacyType, nextNetworkRequestId());
+        if (DBG) log("requestNetwork for " + networkRequest);
+        NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
+                NetworkRequestInfo.REQUEST);
+
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri));
+        if (timeoutSec > 0) {
+            mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST,
+                    nri), timeoutSec * 1000);
+        }
+        return networkRequest;
+    }
+
+    @Override
+    public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities,
+            PendingIntent operation) {
+        // TODO
+        return null;
+    }
+
+    @Override
+    public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities,
+            Messenger messenger, IBinder binder) {
+        enforceAccessPermission();
+
+        NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
+                networkCapabilities), TYPE_NONE, nextNetworkRequestId());
+        if (DBG) log("listenForNetwork for " + networkRequest);
+        NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
+                NetworkRequestInfo.LISTEN);
+
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
+        return networkRequest;
+    }
+
+    @Override
+    public void pendingListenForNetwork(NetworkCapabilities networkCapabilities,
+            PendingIntent operation) {
+    }
+
+    @Override
+    public void releaseNetworkRequest(NetworkRequest networkRequest) {
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST,
+                networkRequest));
+    }
+
+    @Override
+    public void registerNetworkFactory(Messenger messenger, String name) {
+        enforceConnectivityInternalPermission();
+        NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel());
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi));
+    }
+
+    private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) {
+        if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name);
+        mNetworkFactoryInfos.put(nfi.messenger, nfi);
+        nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger);
+    }
+
+    @Override
+    public void unregisterNetworkFactory(Messenger messenger) {
+        enforceConnectivityInternalPermission();
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger));
+    }
+
+    private void handleUnregisterNetworkFactory(Messenger messenger) {
+        NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger);
+        if (nfi == null) {
+            if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory");
+            return;
+        }
+        if (VDBG) log("unregisterNetworkFactory for " + nfi.name);
+    }
+
+    /**
+     * NetworkAgentInfo supporting a request by requestId.
+     * These have already been vetted (their Capabilities satisfy the request)
+     * and the are the highest scored network available.
+     * the are keyed off the Requests requestId.
+     */
+    private final SparseArray<NetworkAgentInfo> mNetworkForRequestId =
+            new SparseArray<NetworkAgentInfo>();
+
+    private final SparseArray<NetworkAgentInfo> mNetworkForNetId =
+            new SparseArray<NetworkAgentInfo>();
+
+    // NetworkAgentInfo keyed off its connecting messenger
+    // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays
+    private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos =
+            new HashMap<Messenger, NetworkAgentInfo>();
+
+    private final NetworkRequest mDefaultRequest;
+
+    public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo,
+            LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
+            int currentScore) {
+        enforceConnectivityInternalPermission();
+
+        NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(),
+            new NetworkInfo(networkInfo), new LinkProperties(linkProperties),
+            new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler);
+        if (VDBG) log("registerNetworkAgent " + nai);
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai));
+    }
+
+    private void handleRegisterNetworkAgent(NetworkAgentInfo na) {
+        if (VDBG) log("Got NetworkAgent Messenger");
+        mNetworkAgentInfos.put(na.messenger, na);
+        mNetworkForNetId.put(na.network.netId, na);
+        na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger);
+        NetworkInfo networkInfo = na.networkInfo;
+        na.networkInfo = null;
+        updateNetworkInfo(na, networkInfo);
+    }
+
+    private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) {
+        LinkProperties newLp = networkAgent.linkProperties;
+        int netId = networkAgent.network.netId;
+
+        updateInterfaces(newLp, oldLp, netId);
+        updateMtu(newLp, oldLp);
+        // TODO - figure out what to do for clat
+//        for (LinkProperties lp : newLp.getStackedLinks()) {
+//            updateMtu(lp, null);
+//        }
+        updateRoutes(newLp, oldLp, netId);
+        updateDnses(newLp, oldLp, netId);
+        updateClat(newLp, oldLp, networkAgent);
+    }
+
+    private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) {
+        // Update 464xlat state.
+        if (mClat.requiresClat(na)) {
+
+            // If the connection was previously using clat, but is not using it now, stop the clat
+            // daemon. Normally, this happens automatically when the connection disconnects, but if
+            // the disconnect is not reported, or if the connection's LinkProperties changed for
+            // some other reason (e.g., handoff changes the IP addresses on the link), it would
+            // still be running. If it's not running, then stopping it is a no-op.
+            if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) {
+                mClat.stopClat();
+            }
+            // If the link requires clat to be running, then start the daemon now.
+            if (na.networkInfo.isConnected()) {
+                mClat.startClat(na);
+            } else {
+                mClat.stopClat();
+            }
+        }
+    }
+
+    private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) {
+        CompareResult<String> interfaceDiff = new CompareResult<String>();
+        if (oldLp != null) {
+            interfaceDiff = oldLp.compareAllInterfaceNames(newLp);
+        } else if (newLp != null) {
+            interfaceDiff.added = newLp.getAllInterfaceNames();
+        }
+        for (String iface : interfaceDiff.added) {
+            try {
+                mNetd.addInterfaceToNetwork(iface, netId);
+            } catch (Exception e) {
+                loge("Exception adding interface: " + e);
+            }
+        }
+        for (String iface : interfaceDiff.removed) {
+            try {
+                mNetd.removeInterfaceFromNetwork(iface, netId);
+            } catch (Exception e) {
+                loge("Exception removing interface: " + e);
+            }
+        }
+    }
+
+    private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) {
+        CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>();
+        if (oldLp != null) {
+            routeDiff = oldLp.compareAllRoutes(newLp);
+        } else if (newLp != null) {
+            routeDiff.added = newLp.getAllRoutes();
+        }
+
+        // add routes before removing old in case it helps with continuous connectivity
+
+        // do this twice, adding non-nexthop routes first, then routes they are dependent on
+        for (RouteInfo route : routeDiff.added) {
+            if (route.hasGateway()) continue;
+            try {
+                mNetd.addRoute(netId, route);
+            } catch (Exception e) {
+                loge("Exception in addRoute for non-gateway: " + e);
+            }
+        }
+        for (RouteInfo route : routeDiff.added) {
+            if (route.hasGateway() == false) continue;
+            try {
+                mNetd.addRoute(netId, route);
+            } catch (Exception e) {
+                loge("Exception in addRoute for gateway: " + e);
+            }
+        }
+
+        for (RouteInfo route : routeDiff.removed) {
+            try {
+                mNetd.removeRoute(netId, route);
+            } catch (Exception e) {
+                loge("Exception in removeRoute: " + e);
+            }
+        }
+    }
+    private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) {
+        if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) {
+            Collection<InetAddress> dnses = newLp.getDnsServers();
+            if (dnses.size() == 0 && mDefaultDns != null) {
+                dnses = new ArrayList();
+                dnses.add(mDefaultDns);
+                if (DBG) {
+                    loge("no dns provided for netId " + netId + ", so using defaults");
+                }
+            }
+            try {
+                mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses),
+                    newLp.getDomains());
+            } catch (Exception e) {
+                loge("Exception in setDnsServersForNetwork: " + e);
+            }
+            NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
+            if (defaultNai != null && defaultNai.network.netId == netId) {
+                setDefaultDnsSystemProperties(dnses);
+            }
+        }
+    }
+
+    private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) {
+        int last = 0;
+        for (InetAddress dns : dnses) {
+            ++last;
+            String key = "net.dns" + last;
+            String value = dns.getHostAddress();
+            SystemProperties.set(key, value);
+        }
+        for (int i = last + 1; i <= mNumDnsEntries; ++i) {
+            String key = "net.dns" + i;
+            SystemProperties.set(key, "");
+        }
+        mNumDnsEntries = last;
+    }
+
+
+    private void updateCapabilities(NetworkAgentInfo networkAgent,
+            NetworkCapabilities networkCapabilities) {
+        // TODO - what else here?  Verify still satisfies everybody?
+        // Check if satisfies somebody new?  call callbacks?
+        networkAgent.networkCapabilities = networkCapabilities;
+    }
+
+    private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) {
+        if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString());
+        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
+            nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0,
+                    networkRequest);
+        }
+    }
+
+    private void callCallbackForRequest(NetworkRequestInfo nri,
+            NetworkAgentInfo networkAgent, int notificationType) {
+        if (nri.messenger == null) return;  // Default request has no msgr
+        Object o;
+        int a1 = 0;
+        int a2 = 0;
+        switch (notificationType) {
+            case ConnectivityManager.CALLBACK_LOSING:
+                a1 = 30; // TODO - read this from NetworkMonitor
+                // fall through
+            case ConnectivityManager.CALLBACK_PRECHECK:
+            case ConnectivityManager.CALLBACK_AVAILABLE:
+            case ConnectivityManager.CALLBACK_LOST:
+            case ConnectivityManager.CALLBACK_CAP_CHANGED:
+            case ConnectivityManager.CALLBACK_IP_CHANGED: {
+                o = new NetworkRequest(nri.request);
+                a2 = networkAgent.network.netId;
+                break;
+            }
+            case ConnectivityManager.CALLBACK_UNAVAIL:
+            case ConnectivityManager.CALLBACK_RELEASED: {
+                o = new NetworkRequest(nri.request);
+                break;
+            }
+            default: {
+                loge("Unknown notificationType " + notificationType);
+                return;
+            }
+        }
+        Message msg = Message.obtain();
+        msg.arg1 = a1;
+        msg.arg2 = a2;
+        msg.obj = o;
+        msg.what = notificationType;
+        try {
+            if (VDBG) log("sending notification " + notificationType + " for " + nri.request);
+            nri.messenger.send(msg);
+        } catch (RemoteException e) {
+            // may occur naturally in the race of binder death.
+            loge("RemoteException caught trying to send a callback msg for " + nri.request);
+        }
+    }
+
+    private void handleLingerComplete(NetworkAgentInfo oldNetwork) {
+        if (oldNetwork == null) {
+            loge("Unknown NetworkAgentInfo in handleLingerComplete");
+            return;
+        }
+        if (DBG) log("handleLingerComplete for " + oldNetwork.name());
+        if (DBG) {
+            if (oldNetwork.networkRequests.size() != 0) {
+                loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests");
+            }
+        }
+        oldNetwork.asyncChannel.disconnect();
+    }
+
+    private void handleConnectionValidated(NetworkAgentInfo newNetwork) {
+        if (newNetwork == null) {
+            loge("Unknown NetworkAgentInfo in handleConnectionValidated");
+            return;
+        }
+        boolean keep = false;
+        boolean isNewDefault = false;
+        if (DBG) log("handleConnectionValidated for "+newNetwork.name());
+        // check if any NetworkRequest wants this NetworkAgent
+        ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>();
+        if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities);
+        for (NetworkRequestInfo nri : mNetworkRequests.values()) {
+            NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId);
+            if (newNetwork == currentNetwork) {
+                if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" +
+                              " request " + nri.request.requestId + ". No change.");
+                keep = true;
+                continue;
+            }
+
+            // check if it satisfies the NetworkCapabilities
+            if (VDBG) log("  checking if request is satisfied: " + nri.request);
+            if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities(
+                    newNetwork.networkCapabilities)) {
+                // next check if it's better than any current network we're using for
+                // this request
+                if (VDBG) {
+                    log("currentScore = " +
+                            (currentNetwork != null ? currentNetwork.currentScore : 0) +
+                            ", newScore = " + newNetwork.currentScore);
+                }
+                if (currentNetwork == null ||
+                        currentNetwork.currentScore < newNetwork.currentScore) {
+                    if (currentNetwork != null) {
+                        if (VDBG) log("   accepting network in place of " + currentNetwork.name());
+                        currentNetwork.networkRequests.remove(nri.request.requestId);
+                        currentNetwork.networkLingered.add(nri.request);
+                        affectedNetworks.add(currentNetwork);
+                    } else {
+                        if (VDBG) log("   accepting network in place of null");
+                    }
+                    mNetworkForRequestId.put(nri.request.requestId, newNetwork);
+                    newNetwork.addRequest(nri.request);
+                    int legacyType = nri.request.legacyType;
+                    if (legacyType != TYPE_NONE) {
+                        mLegacyTypeTracker.add(legacyType, newNetwork);
+                    }
+                    keep = true;
+                    // TODO - this could get expensive if we have alot of requests for this
+                    // network.  Think about if there is a way to reduce this.  Push
+                    // netid->request mapping to each factory?
+                    sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore);
+                    if (mDefaultRequest.requestId == nri.request.requestId) {
+                        isNewDefault = true;
+                        updateActiveDefaultNetwork(newNetwork);
+                        if (newNetwork.linkProperties != null) {
+                            setDefaultDnsSystemProperties(
+                                    newNetwork.linkProperties.getDnsServers());
+                        } else {
+                            setDefaultDnsSystemProperties(new ArrayList<InetAddress>());
+                        }
+                        mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork);
+                    }
+                }
+            }
+        }
+        for (NetworkAgentInfo nai : affectedNetworks) {
+            boolean teardown = true;
+            for (int i = 0; i < nai.networkRequests.size(); i++) {
+                NetworkRequest nr = nai.networkRequests.valueAt(i);
+                try {
+                if (mNetworkRequests.get(nr).isRequest) {
+                    teardown = false;
+                }
+                } catch (Exception e) {
+                    loge("Request " + nr + " not found in mNetworkRequests.");
+                    loge("  it came from request list  of " + nai.name());
+                }
+            }
+            if (teardown) {
+                nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER);
+                notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING);
+            } else {
+                // not going to linger, so kill the list of linger networks..  only
+                // notify them of linger if it happens as the result of gaining another,
+                // but if they transition and old network stays up, don't tell them of linger
+                // or very delayed loss
+                nai.networkLingered.clear();
+                if (VDBG) log("Lingered for " + nai.name() + " cleared");
+            }
+        }
+        if (keep) {
+            if (isNewDefault) {
+                if (VDBG) log("Switching to new default network: " + newNetwork);
+                setupDataActivityTracking(newNetwork);
+                try {
+                    mNetd.setDefaultNetId(newNetwork.network.netId);
+                } catch (Exception e) {
+                    loge("Exception setting default network :" + e);
+                }
+                if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) {
+                    handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy());
+                }
+                synchronized (ConnectivityService.this) {
+                    // have a new default network, release the transition wakelock in
+                    // a second if it's held.  The second pause is to allow apps
+                    // to reconnect over the new network
+                    if (mNetTransitionWakeLock.isHeld()) {
+                        mHandler.sendMessageDelayed(mHandler.obtainMessage(
+                                EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
+                                mNetTransitionWakeLockSerialNumber, 0),
+                                1000);
+                    }
+                }
+
+                // this will cause us to come up initially as unconnected and switching
+                // to connected after our normal pause unless somebody reports us as
+                // really disconnected
+                mDefaultInetConditionPublished = 0;
+                mDefaultConnectionSequence++;
+                mInetConditionChangeInFlight = false;
+                // TODO - read the tcp buffer size config string from somewhere
+                // updateNetworkSettings();
+            }
+            // notify battery stats service about this network
+            try {
+                BatteryStatsService.getService().noteNetworkInterfaceType(
+                        newNetwork.linkProperties.getInterfaceName(),
+                        newNetwork.networkInfo.getType());
+            } catch (RemoteException e) { }
+            notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE);
+        } else {
+            if (DBG && newNetwork.networkRequests.size() != 0) {
+                loge("tearing down network with live requests:");
+                for (int i=0; i < newNetwork.networkRequests.size(); i++) {
+                    loge("  " + newNetwork.networkRequests.valueAt(i));
+                }
+            }
+            if (VDBG) log("Validated network turns out to be unwanted.  Tear it down.");
+            newNetwork.asyncChannel.disconnect();
+        }
+    }
+
+
+    private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) {
+        NetworkInfo.State state = newInfo.getState();
+        NetworkInfo oldInfo = networkAgent.networkInfo;
+        networkAgent.networkInfo = newInfo;
+
+        if (oldInfo != null && oldInfo.getState() == state) {
+            if (VDBG) log("ignoring duplicate network state non-change");
+            return;
+        }
+        if (DBG) {
+            log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " +
+                    (oldInfo == null ? "null" : oldInfo.getState()) +
+                    " to " + state);
+        }
+
+        if (state == NetworkInfo.State.CONNECTED) {
+            try {
+                // This is likely caused by the fact that this network already
+                // exists. An example is when a network goes from CONNECTED to
+                // CONNECTING and back (like wifi on DHCP renew).
+                // TODO: keep track of which networks we've created, or ask netd
+                // to tell us whether we've already created this network or not.
+                mNetd.createNetwork(networkAgent.network.netId);
+            } catch (Exception e) {
+                loge("Error creating network " + networkAgent.network.netId + ": "
+                        + e.getMessage());
+                return;
+            }
+
+            updateLinkProperties(networkAgent, null);
+            notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK);
+            networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
+        } else if (state == NetworkInfo.State.DISCONNECTED ||
+                state == NetworkInfo.State.SUSPENDED) {
+            networkAgent.asyncChannel.disconnect();
+        }
+    }
+
+    private void updateNetworkScore(NetworkAgentInfo nai, int score) {
+        if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score);
+
+        nai.currentScore = score;
+
+        // TODO - This will not do the right thing if this network is lowering
+        // its score and has requests that can be served by other
+        // currently-active networks, or if the network is increasing its
+        // score and other networks have requests that can be better served
+        // by this network.
+        //
+        // Really we want to see if any of our requests migrate to other
+        // active/lingered networks and if any other requests migrate to us (depending
+        // on increasing/decreasing currentScore.  That's a bit of work and probably our
+        // score checking/network allocation code needs to be modularized so we can understand
+        // (see handleConnectionValided for an example).
+        //
+        // As a first order approx, lets just advertise the new score to factories.  If
+        // somebody can beat it they will nominate a network and our normal net replacement
+        // code will fire.
+        for (int i = 0; i < nai.networkRequests.size(); i++) {
+            NetworkRequest nr = nai.networkRequests.valueAt(i);
+            sendUpdatedScoreToFactories(nr, score);
+        }
+    }
+
+    // notify only this one new request of the current state
+    protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) {
+        int notifyType = ConnectivityManager.CALLBACK_AVAILABLE;
+        // TODO - read state from monitor to decide what to send.
+//        if (nai.networkMonitor.isLingering()) {
+//            notifyType = NetworkCallbacks.LOSING;
+//        } else if (nai.networkMonitor.isEvaluating()) {
+//            notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType);
+//        }
+        callCallbackForRequest(nri, nai, notifyType);
+    }
+
+    private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) {
+        if (connected) {
+            NetworkInfo info = new NetworkInfo(nai.networkInfo);
+            info.setType(type);
+            sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay());
+        } else {
+            NetworkInfo info = new NetworkInfo(nai.networkInfo);
+            info.setType(type);
+            Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
+            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info);
+            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
+            if (info.isFailover()) {
+                intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
+                nai.networkInfo.setFailover(false);
+            }
+            if (info.getReason() != null) {
+                intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
+            }
+            if (info.getExtraInfo() != null) {
+                intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo());
+            }
+            NetworkAgentInfo newDefaultAgent = null;
+            if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
+                newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId);
+                if (newDefaultAgent != null) {
+                    intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO,
+                            newDefaultAgent.networkInfo);
+                } else {
+                    intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
+                }
+            }
+            intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION,
+                    mDefaultInetConditionPublished);
+            final Intent immediateIntent = new Intent(intent);
+            immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE);
+            sendStickyBroadcast(immediateIntent);
+            sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay());
+            if (newDefaultAgent != null) {
+                sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo,
+                getConnectivityChangeDelay());
+            }
+        }
+    }
+
+    protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) {
+        if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name());
+        for (int i = 0; i < networkAgent.networkRequests.size(); i++) {
+            NetworkRequest nr = networkAgent.networkRequests.valueAt(i);
+            NetworkRequestInfo nri = mNetworkRequests.get(nr);
+            if (VDBG) log(" sending notification for " + nr);
+            callCallbackForRequest(nri, networkAgent, notifyType);
+        }
+    }
+
+    private LinkProperties getLinkPropertiesForTypeInternal(int networkType) {
+        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+        return (nai != null) ?
+                new LinkProperties(nai.linkProperties) :
+                new LinkProperties();
+    }
+
+    private NetworkInfo getNetworkInfoForType(int networkType) {
+        if (!mLegacyTypeTracker.isTypeSupported(networkType))
+            return null;
+
+        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+        if (nai != null) {
+            NetworkInfo result = new NetworkInfo(nai.networkInfo);
+            result.setType(networkType);
+            return result;
+        } else {
+           return new NetworkInfo(networkType, 0, "Unknown", "");
+        }
+    }
+
+    private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) {
+        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
+        return (nai != null) ?
+                new NetworkCapabilities(nai.networkCapabilities) :
+                new NetworkCapabilities();
+    }
+}
diff --git a/services/core/java/com/android/server/connectivity/Nat464Xlat.java b/services/core/java/com/android/server/connectivity/Nat464Xlat.java
new file mode 100644
index 0000000..096ab66
--- /dev/null
+++ b/services/core/java/com/android/server/connectivity/Nat464Xlat.java
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivity;
+
+import static android.net.ConnectivityManager.TYPE_MOBILE;
+
+import java.net.Inet4Address;
+
+import android.content.Context;
+import android.net.IConnectivityManager;
+import android.net.InterfaceConfiguration;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.NetworkAgent;
+import android.net.NetworkUtils;
+import android.net.RouteInfo;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.INetworkManagementService;
+import android.os.RemoteException;
+import android.util.Slog;
+
+import com.android.server.net.BaseNetworkObserver;
+
+/**
+ * @hide
+ *
+ * Class to manage a 464xlat CLAT daemon.
+ */
+public class Nat464Xlat extends BaseNetworkObserver {
+    private Context mContext;
+    private INetworkManagementService mNMService;
+    private IConnectivityManager mConnService;
+    // Whether we started clatd and expect it to be running.
+    private boolean mIsStarted;
+    // Whether the clatd interface exists (i.e., clatd is running).
+    private boolean mIsRunning;
+    // The LinkProperties of the clat interface.
+    private LinkProperties mLP;
+    // Current LinkProperties of the network.  Includes mLP as a stacked link when clat is active.
+    private LinkProperties mBaseLP;
+    // ConnectivityService Handler for LinkProperties updates.
+    private Handler mHandler;
+    // Marker to connote which network we're augmenting.
+    private Messenger mNetworkMessenger;
+
+    // This must match the interface name in clatd.conf.
+    private static final String CLAT_INTERFACE_NAME = "clat4";
+
+    private static final String TAG = "Nat464Xlat";
+
+    public Nat464Xlat(Context context, INetworkManagementService nmService,
+                      IConnectivityManager connService, Handler handler) {
+        mContext = context;
+        mNMService = nmService;
+        mConnService = connService;
+        mHandler = handler;
+
+        mIsStarted = false;
+        mIsRunning = false;
+        mLP = new LinkProperties();
+
+        // If this is a runtime restart, it's possible that clatd is already
+        // running, but we don't know about it. If so, stop it.
+        try {
+            if (mNMService.isClatdStarted()) {
+                mNMService.stopClatd();
+            }
+        } catch(RemoteException e) {}  // Well, we tried.
+    }
+
+    /**
+     * Determines whether a network requires clat.
+     * @param network the NetworkAgentInfo corresponding to the network.
+     * @return true if the network requires clat, false otherwise.
+     */
+    public boolean requiresClat(NetworkAgentInfo network) {
+        int netType = network.networkInfo.getType();
+        LinkProperties lp = network.linkProperties;
+        // Only support clat on mobile for now.
+        Slog.d(TAG, "requiresClat: netType=" + netType + ", hasIPv4Address=" +
+               lp.hasIPv4Address());
+        return netType == TYPE_MOBILE && !lp.hasIPv4Address();
+    }
+
+    public static boolean isRunningClat(LinkProperties lp) {
+      return lp != null && lp.getAllInterfaceNames().contains(CLAT_INTERFACE_NAME);
+    }
+
+    /**
+     * Starts the clat daemon.
+     * @param lp The link properties of the interface to start clatd on.
+     */
+    public void startClat(NetworkAgentInfo network) {
+        if (mNetworkMessenger != null && mNetworkMessenger != network.messenger) {
+            Slog.e(TAG, "startClat: too many networks requesting clat");
+            return;
+        }
+        mNetworkMessenger = network.messenger;
+        LinkProperties lp = network.linkProperties;
+        mBaseLP = new LinkProperties(lp);
+        if (mIsStarted) {
+            Slog.e(TAG, "startClat: already started");
+            return;
+        }
+        String iface = lp.getInterfaceName();
+        Slog.i(TAG, "Starting clatd on " + iface + ", lp=" + lp);
+        try {
+            mNMService.startClatd(iface);
+        } catch(RemoteException e) {
+            Slog.e(TAG, "Error starting clat daemon: " + e);
+        }
+        mIsStarted = true;
+    }
+
+    /**
+     * Stops the clat daemon.
+     */
+    public void stopClat() {
+        if (mIsStarted) {
+            Slog.i(TAG, "Stopping clatd");
+            try {
+                mNMService.stopClatd();
+            } catch(RemoteException e) {
+                Slog.e(TAG, "Error stopping clat daemon: " + e);
+            }
+            mIsStarted = false;
+            mIsRunning = false;
+            mNetworkMessenger = null;
+            mBaseLP = null;
+            mLP.clear();
+        } else {
+            Slog.e(TAG, "stopClat: already stopped");
+        }
+    }
+
+    public boolean isStarted() {
+        return mIsStarted;
+    }
+
+    public boolean isRunning() {
+        return mIsRunning;
+    }
+
+    private void updateConnectivityService() {
+        Message msg = mHandler.obtainMessage(
+            NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED, mBaseLP);
+        msg.replyTo = mNetworkMessenger;
+        Slog.i(TAG, "sending message to ConnectivityService: " + msg);
+        msg.sendToTarget();
+    }
+
+    @Override
+    public void interfaceAdded(String iface) {
+        if (iface.equals(CLAT_INTERFACE_NAME)) {
+            Slog.i(TAG, "interface " + CLAT_INTERFACE_NAME +
+                   " added, mIsRunning = " + mIsRunning + " -> true");
+            mIsRunning = true;
+
+            // Create the LinkProperties for the clat interface by fetching the
+            // IPv4 address for the interface and adding an IPv4 default route,
+            // then stack the LinkProperties on top of the link it's running on.
+            // Although the clat interface is a point-to-point tunnel, we don't
+            // point the route directly at the interface because some apps don't
+            // understand routes without gateways (see, e.g., http://b/9597256
+            // http://b/9597516). Instead, set the next hop of the route to the
+            // clat IPv4 address itself (for those apps, it doesn't matter what
+            // the IP of the gateway is, only that there is one).
+            try {
+                InterfaceConfiguration config = mNMService.getInterfaceConfig(iface);
+                LinkAddress clatAddress = config.getLinkAddress();
+                mLP.clear();
+                mLP.setInterfaceName(iface);
+                RouteInfo ipv4Default = new RouteInfo(new LinkAddress(Inet4Address.ANY, 0),
+                                                      clatAddress.getAddress(), iface);
+                mLP.addRoute(ipv4Default);
+                mLP.addLinkAddress(clatAddress);
+                mBaseLP.addStackedLink(mLP);
+                Slog.i(TAG, "Adding stacked link. tracker LP: " + mBaseLP);
+                updateConnectivityService();
+            } catch(RemoteException e) {
+                Slog.e(TAG, "Error getting link properties: " + e);
+            }
+        }
+    }
+
+    @Override
+    public void interfaceRemoved(String iface) {
+        if (iface == CLAT_INTERFACE_NAME) {
+            if (mIsRunning) {
+                NetworkUtils.resetConnections(
+                    CLAT_INTERFACE_NAME,
+                    NetworkUtils.RESET_IPV4_ADDRESSES);
+                mBaseLP.removeStackedLink(mLP);
+                updateConnectivityService();
+            }
+            Slog.i(TAG, "interface " + CLAT_INTERFACE_NAME +
+                   " removed, mIsRunning = " + mIsRunning + " -> false");
+            mIsRunning = false;
+            mLP.clear();
+            Slog.i(TAG, "mLP = " + mLP);
+        }
+    }
+};
diff --git a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
new file mode 100644
index 0000000..b03c247
--- /dev/null
+++ b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivity;
+
+import android.content.Context;
+import android.net.LinkProperties;
+import android.net.Network;
+import android.net.NetworkCapabilities;
+import android.net.NetworkInfo;
+import android.net.NetworkRequest;
+import android.os.Handler;
+import android.os.Messenger;
+import android.util.SparseArray;
+
+import com.android.internal.util.AsyncChannel;
+import com.android.server.connectivity.NetworkMonitor;
+
+import java.util.ArrayList;
+
+/**
+ * A bag class used by ConnectivityService for holding a collection of most recent
+ * information published by a particular NetworkAgent as well as the
+ * AsyncChannel/messenger for reaching that NetworkAgent and lists of NetworkRequests
+ * interested in using it.
+ */
+public class NetworkAgentInfo {
+    public NetworkInfo networkInfo;
+    public final Network network;
+    public LinkProperties linkProperties;
+    public NetworkCapabilities networkCapabilities;
+    public int currentScore;
+    public final NetworkMonitor networkMonitor;
+
+    // The list of NetworkRequests being satisfied by this Network.
+    public final SparseArray<NetworkRequest> networkRequests = new SparseArray<NetworkRequest>();
+    public final ArrayList<NetworkRequest> networkLingered = new ArrayList<NetworkRequest>();
+
+    public final Messenger messenger;
+    public final AsyncChannel asyncChannel;
+
+    public NetworkAgentInfo(Messenger messenger, AsyncChannel ac, int netId, NetworkInfo info,
+            LinkProperties lp, NetworkCapabilities nc, int score, Context context,
+            Handler handler) {
+        this.messenger = messenger;
+        asyncChannel = ac;
+        network = new Network(netId);
+        networkInfo = info;
+        linkProperties = lp;
+        networkCapabilities = nc;
+        currentScore = score;
+        networkMonitor = new NetworkMonitor(context, handler, this);
+    }
+
+    public void addRequest(NetworkRequest networkRequest) {
+        networkRequests.put(networkRequest.requestId, networkRequest);
+    }
+
+    public String toString() {
+        return "NetworkAgentInfo{ ni{" + networkInfo + "}  network{" +
+                network + "}  lp{" +
+                linkProperties + "}  nc{" +
+                networkCapabilities + "}  Score{" + currentScore + "} }";
+    }
+
+    public String name() {
+        return "NetworkAgentInfo [" + networkInfo.getTypeName() + " (" +
+                networkInfo.getSubtypeName() + ")]";
+    }
+}
diff --git a/services/tests/servicestests/res/raw/netstats_uid_v4 b/services/tests/servicestests/res/raw/netstats_uid_v4
new file mode 100644
index 0000000..e75fc1c
--- /dev/null
+++ b/services/tests/servicestests/res/raw/netstats_uid_v4
Binary files differ
diff --git a/services/tests/servicestests/res/raw/netstats_v1 b/services/tests/servicestests/res/raw/netstats_v1
new file mode 100644
index 0000000..e80860a
--- /dev/null
+++ b/services/tests/servicestests/res/raw/netstats_v1
Binary files differ
diff --git a/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
new file mode 100644
index 0000000..88aaafc
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
@@ -0,0 +1,231 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE;
+import static android.net.ConnectivityManager.TYPE_MOBILE;
+import static android.net.ConnectivityManager.TYPE_WIFI;
+import static android.net.ConnectivityManager.getNetworkTypeName;
+import static android.net.NetworkStateTracker.EVENT_STATE_CHANGED;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Matchers.isA;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.net.INetworkPolicyManager;
+import android.net.INetworkStatsService;
+import android.net.LinkProperties;
+import android.net.NetworkConfig;
+import android.net.NetworkInfo;
+import android.net.NetworkInfo.DetailedState;
+import android.net.NetworkStateTracker;
+import android.net.RouteInfo;
+import android.os.Handler;
+import android.os.INetworkManagementService;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import android.util.Log;
+import android.util.LogPrinter;
+
+import org.mockito.ArgumentCaptor;
+
+import java.net.InetAddress;
+import java.util.concurrent.Future;
+
+/**
+ * Tests for {@link ConnectivityService}.
+ */
+@LargeTest
+public class ConnectivityServiceTest extends AndroidTestCase {
+    private static final String TAG = "ConnectivityServiceTest";
+
+    private static final String MOBILE_IFACE = "rmnet3";
+    private static final String WIFI_IFACE = "wlan6";
+
+    private static final RouteInfo MOBILE_ROUTE_V4 = RouteInfo.makeHostRoute(parse("10.0.0.33"),
+                                                                             MOBILE_IFACE);
+    private static final RouteInfo MOBILE_ROUTE_V6 = RouteInfo.makeHostRoute(parse("fd00::33"),
+                                                                             MOBILE_IFACE);
+
+    private static final RouteInfo WIFI_ROUTE_V4 = RouteInfo.makeHostRoute(parse("192.168.0.66"),
+                                                                           parse("192.168.0.1"),
+                                                                           WIFI_IFACE);
+    private static final RouteInfo WIFI_ROUTE_V6 = RouteInfo.makeHostRoute(parse("fd00::66"),
+                                                                           parse("fd00::"),
+                                                                           WIFI_IFACE);
+
+    private INetworkManagementService mNetManager;
+    private INetworkStatsService mStatsService;
+    private INetworkPolicyManager mPolicyService;
+    private ConnectivityService.NetworkFactory mNetFactory;
+
+    private BroadcastInterceptingContext mServiceContext;
+    private ConnectivityService mService;
+
+    private MockNetwork mMobile;
+    private MockNetwork mWifi;
+
+    private Handler mTrackerHandler;
+
+    private static class MockNetwork {
+        public NetworkStateTracker tracker;
+        public NetworkInfo info;
+        public LinkProperties link;
+
+        public MockNetwork(int type) {
+            tracker = mock(NetworkStateTracker.class);
+            info = new NetworkInfo(type, -1, getNetworkTypeName(type), null);
+            link = new LinkProperties();
+        }
+
+        public void doReturnDefaults() {
+            // TODO: eventually CS should make defensive copies
+            doReturn(new NetworkInfo(info)).when(tracker).getNetworkInfo();
+            doReturn(new LinkProperties(link)).when(tracker).getLinkProperties();
+
+            // fallback to default TCP buffers
+            doReturn("").when(tracker).getTcpBufferSizesPropName();
+        }
+    }
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        mServiceContext = new BroadcastInterceptingContext(getContext());
+
+        mNetManager = mock(INetworkManagementService.class);
+        mStatsService = mock(INetworkStatsService.class);
+        mPolicyService = mock(INetworkPolicyManager.class);
+        mNetFactory = mock(ConnectivityService.NetworkFactory.class);
+
+        mMobile = new MockNetwork(TYPE_MOBILE);
+        mWifi = new MockNetwork(TYPE_WIFI);
+
+        // omit most network trackers
+        doThrow(new IllegalArgumentException("Not supported in test environment"))
+                .when(mNetFactory).createTracker(anyInt(), isA(NetworkConfig.class));
+
+        doReturn(mMobile.tracker)
+                .when(mNetFactory).createTracker(eq(TYPE_MOBILE), isA(NetworkConfig.class));
+        doReturn(mWifi.tracker)
+                .when(mNetFactory).createTracker(eq(TYPE_WIFI), isA(NetworkConfig.class));
+
+        final ArgumentCaptor<Handler> trackerHandler = ArgumentCaptor.forClass(Handler.class);
+        doNothing().when(mMobile.tracker)
+                .startMonitoring(isA(Context.class), trackerHandler.capture());
+
+        mService = new ConnectivityService(
+                mServiceContext, mNetManager, mStatsService, mPolicyService, mNetFactory);
+        mService.systemReady();
+
+        mTrackerHandler = trackerHandler.getValue();
+        mTrackerHandler.getLooper().setMessageLogging(new LogPrinter(Log.INFO, TAG));
+    }
+
+    @Override
+    public void tearDown() throws Exception {
+        super.tearDown();
+    }
+
+    public void testMobileConnectedAddedRoutes() throws Exception {
+        Future<?> nextConnBroadcast;
+
+        // bring up mobile network
+        mMobile.info.setDetailedState(DetailedState.CONNECTED, null, null);
+        mMobile.link.setInterfaceName(MOBILE_IFACE);
+        mMobile.link.addRoute(MOBILE_ROUTE_V4);
+        mMobile.link.addRoute(MOBILE_ROUTE_V6);
+        mMobile.doReturnDefaults();
+
+        nextConnBroadcast = mServiceContext.nextBroadcastIntent(CONNECTIVITY_ACTION_IMMEDIATE);
+        mTrackerHandler.obtainMessage(EVENT_STATE_CHANGED, mMobile.info).sendToTarget();
+        nextConnBroadcast.get();
+
+        // verify that both routes were added and DNS was flushed
+        int mobileNetId = mMobile.tracker.getNetwork().netId;
+        verify(mNetManager).addRoute(eq(mobileNetId), eq(MOBILE_ROUTE_V4));
+        verify(mNetManager).addRoute(eq(mobileNetId), eq(MOBILE_ROUTE_V6));
+        verify(mNetManager).flushNetworkDnsCache(mobileNetId);
+
+    }
+
+    public void testMobileWifiHandoff() throws Exception {
+        Future<?> nextConnBroadcast;
+
+        // bring up mobile network
+        mMobile.info.setDetailedState(DetailedState.CONNECTED, null, null);
+        mMobile.link.setInterfaceName(MOBILE_IFACE);
+        mMobile.link.addRoute(MOBILE_ROUTE_V4);
+        mMobile.link.addRoute(MOBILE_ROUTE_V6);
+        mMobile.doReturnDefaults();
+
+        nextConnBroadcast = mServiceContext.nextBroadcastIntent(CONNECTIVITY_ACTION_IMMEDIATE);
+        mTrackerHandler.obtainMessage(EVENT_STATE_CHANGED, mMobile.info).sendToTarget();
+        nextConnBroadcast.get();
+
+        reset(mNetManager);
+
+        // now bring up wifi network
+        mWifi.info.setDetailedState(DetailedState.CONNECTED, null, null);
+        mWifi.link.setInterfaceName(WIFI_IFACE);
+        mWifi.link.addRoute(WIFI_ROUTE_V4);
+        mWifi.link.addRoute(WIFI_ROUTE_V6);
+        mWifi.doReturnDefaults();
+
+        // expect that mobile will be torn down
+        doReturn(true).when(mMobile.tracker).teardown();
+
+        nextConnBroadcast = mServiceContext.nextBroadcastIntent(CONNECTIVITY_ACTION_IMMEDIATE);
+        mTrackerHandler.obtainMessage(EVENT_STATE_CHANGED, mWifi.info).sendToTarget();
+        nextConnBroadcast.get();
+
+        // verify that wifi routes added, and teardown requested
+        int wifiNetId = mWifi.tracker.getNetwork().netId;
+        verify(mNetManager).addRoute(eq(wifiNetId), eq(WIFI_ROUTE_V4));
+        verify(mNetManager).addRoute(eq(wifiNetId), eq(WIFI_ROUTE_V6));
+        verify(mNetManager).flushNetworkDnsCache(wifiNetId);
+        verify(mMobile.tracker).teardown();
+
+        int mobileNetId = mMobile.tracker.getNetwork().netId;
+
+        reset(mNetManager, mMobile.tracker);
+
+        // tear down mobile network, as requested
+        mMobile.info.setDetailedState(DetailedState.DISCONNECTED, null, null);
+        mMobile.link.clear();
+        mMobile.doReturnDefaults();
+
+        nextConnBroadcast = mServiceContext.nextBroadcastIntent(CONNECTIVITY_ACTION_IMMEDIATE);
+        mTrackerHandler.obtainMessage(EVENT_STATE_CHANGED, mMobile.info).sendToTarget();
+        nextConnBroadcast.get();
+
+        verify(mNetManager).removeRoute(eq(mobileNetId), eq(MOBILE_ROUTE_V4));
+        verify(mNetManager).removeRoute(eq(mobileNetId), eq(MOBILE_ROUTE_V6));
+
+    }
+
+    private static InetAddress parse(String addr) {
+        return InetAddress.parseNumericAddress(addr);
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
new file mode 100644
index 0000000..0d5daa5
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/NetworkManagementServiceTest.java
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import android.content.Context;
+import android.net.LinkAddress;
+import android.net.LocalSocket;
+import android.net.LocalServerSocket;
+import android.os.Binder;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import com.android.server.net.BaseNetworkObserver;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoMoreInteractions;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Tests for {@link NetworkManagementService}.
+ */
+@LargeTest
+public class NetworkManagementServiceTest extends AndroidTestCase {
+
+    private static final String SOCKET_NAME = "__test__NetworkManagementServiceTest";
+    private NetworkManagementService mNMService;
+    private LocalServerSocket mServerSocket;
+    private LocalSocket mSocket;
+    private OutputStream mOutputStream;
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+        // TODO: make this unnecessary. runtest might already make it unnecessary.
+        System.setProperty("dexmaker.dexcache", getContext().getCacheDir().toString());
+
+        // Set up a sheltered test environment.
+        BroadcastInterceptingContext context = new BroadcastInterceptingContext(getContext());
+        mServerSocket = new LocalServerSocket(SOCKET_NAME);
+
+        // Start the service and wait until it connects to our socket.
+        mNMService = NetworkManagementService.create(context, SOCKET_NAME);
+        mSocket = mServerSocket.accept();
+        mOutputStream = mSocket.getOutputStream();
+    }
+
+    @Override
+    public void tearDown() throws Exception {
+        if (mSocket != null) mSocket.close();
+        if (mServerSocket != null) mServerSocket.close();
+        super.tearDown();
+    }
+
+    /**
+     * Sends a message on the netd socket and gives the events some time to make it back.
+     */
+    private void sendMessage(String message) throws IOException {
+        // Strings are null-terminated, so add "\0" at the end.
+        mOutputStream.write((message + "\0").getBytes());
+    }
+
+    private static <T> T expectSoon(T mock) {
+        return verify(mock, timeout(100));
+    }
+
+    /**
+     * Tests that network observers work properly.
+     */
+    public void testNetworkObservers() throws Exception {
+        BaseNetworkObserver observer = mock(BaseNetworkObserver.class);
+        doReturn(new Binder()).when(observer).asBinder();  // Used by registerObserver.
+        mNMService.registerObserver(observer);
+
+        // Forget everything that happened to the mock so far, so we can explicitly verify
+        // everything that happens and does not happen to it from now on.
+        reset(observer);
+
+        // Now send NetworkManagementService messages and ensure that the observer methods are
+        // called. After every valid message we expect a callback soon after; to ensure that
+        // invalid messages don't cause any callbacks, we call verifyNoMoreInteractions at the end.
+
+        /**
+         * Interface changes.
+         */
+        sendMessage("600 Iface added rmnet12");
+        expectSoon(observer).interfaceAdded("rmnet12");
+
+        sendMessage("600 Iface removed eth1");
+        expectSoon(observer).interfaceRemoved("eth1");
+
+        sendMessage("607 Iface removed eth1");
+        // Invalid code.
+
+        sendMessage("600 Iface borked lo down");
+        // Invalid event.
+
+        sendMessage("600 Iface changed clat4 up again");
+        // Extra tokens.
+
+        sendMessage("600 Iface changed clat4 up");
+        expectSoon(observer).interfaceStatusChanged("clat4", true);
+
+        sendMessage("600 Iface linkstate rmnet0 down");
+        expectSoon(observer).interfaceLinkStateChanged("rmnet0", false);
+
+        sendMessage("600 IFACE linkstate clat4 up");
+        // Invalid group.
+
+        /**
+         * Bandwidth control events.
+         */
+        sendMessage("601 limit alert data rmnet_usb0");
+        expectSoon(observer).limitReached("data", "rmnet_usb0");
+
+        sendMessage("601 invalid alert data rmnet0");
+        // Invalid group.
+
+        sendMessage("601 limit increased data rmnet0");
+        // Invalid event.
+
+
+        /**
+         * Interface class activity.
+         */
+
+        sendMessage("613 IfaceClass active rmnet0");
+        expectSoon(observer).interfaceClassDataActivityChanged("rmnet0", true, 0);
+
+        sendMessage("613 IfaceClass active rmnet0 1234");
+        expectSoon(observer).interfaceClassDataActivityChanged("rmnet0", true, 1234);
+
+        sendMessage("613 IfaceClass idle eth0");
+        expectSoon(observer).interfaceClassDataActivityChanged("eth0", false, 0);
+
+        sendMessage("613 IfaceClass idle eth0 1234");
+        expectSoon(observer).interfaceClassDataActivityChanged("eth0", false, 1234);
+
+        sendMessage("613 IfaceClass reallyactive rmnet0 1234");
+        expectSoon(observer).interfaceClassDataActivityChanged("rmnet0", false, 1234);
+
+        sendMessage("613 InterfaceClass reallyactive rmnet0");
+        // Invalid group.
+
+
+        /**
+         * IP address changes.
+         */
+        sendMessage("614 Address updated fe80::1/64 wlan0 128 253");
+        expectSoon(observer).addressUpdated("wlan0", new LinkAddress("fe80::1/64", 128, 253));
+
+        // There is no "added", so we take this as "removed".
+        sendMessage("614 Address added fe80::1/64 wlan0 128 253");
+        expectSoon(observer).addressRemoved("wlan0", new LinkAddress("fe80::1/64", 128, 253));
+
+        sendMessage("614 Address removed 2001:db8::1/64 wlan0 1 0");
+        expectSoon(observer).addressRemoved("wlan0", new LinkAddress("2001:db8::1/64", 1, 0));
+
+        sendMessage("614 Address removed 2001:db8::1/64 wlan0 1");
+        // Not enough arguments.
+
+        sendMessage("666 Address removed 2001:db8::1/64 wlan0 1 0");
+        // Invalid code.
+
+
+        /**
+         * DNS information broadcasts.
+         */
+        sendMessage("615 DnsInfo servers rmnet_usb0 3600 2001:db8::1");
+        expectSoon(observer).interfaceDnsServerInfo("rmnet_usb0", 3600,
+                new String[]{"2001:db8::1"});
+
+        sendMessage("615 DnsInfo servers wlan0 14400 2001:db8::1,2001:db8::2");
+        expectSoon(observer).interfaceDnsServerInfo("wlan0", 14400,
+                new String[]{"2001:db8::1", "2001:db8::2"});
+
+        // We don't check for negative lifetimes, only for parse errors.
+        sendMessage("615 DnsInfo servers wlan0 -3600 ::1");
+        expectSoon(observer).interfaceDnsServerInfo("wlan0", -3600,
+                new String[]{"::1"});
+
+        sendMessage("615 DnsInfo servers wlan0 SIXHUNDRED ::1");
+        // Non-numeric lifetime.
+
+        sendMessage("615 DnsInfo servers wlan0 2001:db8::1");
+        // Missing lifetime.
+
+        sendMessage("615 DnsInfo servers wlan0 3600");
+        // No servers.
+
+        sendMessage("615 DnsInfo servers 3600 wlan0 2001:db8::1,2001:db8::2");
+        // Non-numeric lifetime.
+
+        sendMessage("615 DnsInfo wlan0 7200 2001:db8::1,2001:db8::2");
+        // Invalid tokens.
+
+        sendMessage("666 DnsInfo servers wlan0 5400 2001:db8::1");
+        // Invalid code.
+
+        // No syntax checking on the addresses.
+        sendMessage("615 DnsInfo servers wlan0 600 ,::,,foo,::1,");
+        expectSoon(observer).interfaceDnsServerInfo("wlan0", 600,
+                new String[]{"", "::", "", "foo", "::1"});
+
+        // Make sure nothing else was called.
+        verifyNoMoreInteractions(observer);
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
new file mode 100644
index 0000000..a1af8cb
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/NetworkStatsServiceTest.java
@@ -0,0 +1,1057 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import static android.content.Intent.ACTION_UID_REMOVED;
+import static android.content.Intent.EXTRA_UID;
+import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE;
+import static android.net.ConnectivityManager.TYPE_MOBILE;
+import static android.net.ConnectivityManager.TYPE_WIFI;
+import static android.net.ConnectivityManager.TYPE_WIMAX;
+import static android.net.NetworkStats.IFACE_ALL;
+import static android.net.NetworkStats.SET_ALL;
+import static android.net.NetworkStats.SET_DEFAULT;
+import static android.net.NetworkStats.SET_FOREGROUND;
+import static android.net.NetworkStats.TAG_NONE;
+import static android.net.NetworkStats.UID_ALL;
+import static android.net.NetworkStatsHistory.FIELD_ALL;
+import static android.net.NetworkTemplate.buildTemplateMobileAll;
+import static android.net.NetworkTemplate.buildTemplateWifiWildcard;
+import static android.net.TrafficStats.MB_IN_BYTES;
+import static android.net.TrafficStats.UID_REMOVED;
+import static android.net.TrafficStats.UID_TETHERING;
+import static android.text.format.DateUtils.DAY_IN_MILLIS;
+import static android.text.format.DateUtils.HOUR_IN_MILLIS;
+import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
+import static android.text.format.DateUtils.WEEK_IN_MILLIS;
+import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_POLL;
+import static org.easymock.EasyMock.anyLong;
+import static org.easymock.EasyMock.capture;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.eq;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.isA;
+
+import android.app.AlarmManager;
+import android.app.IAlarmManager;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.net.IConnectivityManager;
+import android.net.INetworkManagementEventObserver;
+import android.net.INetworkStatsSession;
+import android.net.LinkProperties;
+import android.net.NetworkInfo;
+import android.net.NetworkInfo.DetailedState;
+import android.net.NetworkState;
+import android.net.NetworkStats;
+import android.net.NetworkStatsHistory;
+import android.net.NetworkTemplate;
+import android.os.INetworkManagementService;
+import android.os.WorkSource;
+import android.telephony.TelephonyManager;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import android.test.suitebuilder.annotation.Suppress;
+import android.util.TrustedTime;
+
+import com.android.server.net.NetworkStatsService;
+import com.android.server.net.NetworkStatsService.NetworkStatsSettings;
+import com.android.server.net.NetworkStatsService.NetworkStatsSettings.Config;
+
+import libcore.io.IoUtils;
+
+import org.easymock.Capture;
+import org.easymock.EasyMock;
+
+import java.io.File;
+
+/**
+ * Tests for {@link NetworkStatsService}.
+ */
+@LargeTest
+public class NetworkStatsServiceTest extends AndroidTestCase {
+    private static final String TAG = "NetworkStatsServiceTest";
+
+    private static final String TEST_IFACE = "test0";
+    private static final String TEST_IFACE2 = "test1";
+    private static final long TEST_START = 1194220800000L;
+
+    private static final String IMSI_1 = "310004";
+    private static final String IMSI_2 = "310260";
+    private static final String TEST_SSID = "AndroidAP";
+
+    private static NetworkTemplate sTemplateWifi = buildTemplateWifiWildcard();
+    private static NetworkTemplate sTemplateImsi1 = buildTemplateMobileAll(IMSI_1);
+    private static NetworkTemplate sTemplateImsi2 = buildTemplateMobileAll(IMSI_2);
+
+    private static final int UID_RED = 1001;
+    private static final int UID_BLUE = 1002;
+    private static final int UID_GREEN = 1003;
+
+    private long mElapsedRealtime;
+
+    private BroadcastInterceptingContext mServiceContext;
+    private File mStatsDir;
+
+    private INetworkManagementService mNetManager;
+    private IAlarmManager mAlarmManager;
+    private TrustedTime mTime;
+    private NetworkStatsSettings mSettings;
+    private IConnectivityManager mConnManager;
+
+    private NetworkStatsService mService;
+    private INetworkStatsSession mSession;
+    private INetworkManagementEventObserver mNetworkObserver;
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        mServiceContext = new BroadcastInterceptingContext(getContext());
+        mStatsDir = getContext().getFilesDir();
+        if (mStatsDir.exists()) {
+            IoUtils.deleteContents(mStatsDir);
+        }
+
+        mNetManager = createMock(INetworkManagementService.class);
+        mAlarmManager = createMock(IAlarmManager.class);
+        mTime = createMock(TrustedTime.class);
+        mSettings = createMock(NetworkStatsSettings.class);
+        mConnManager = createMock(IConnectivityManager.class);
+
+        mService = new NetworkStatsService(
+                mServiceContext, mNetManager, mAlarmManager, mTime, mStatsDir, mSettings);
+        mService.bindConnectivityManager(mConnManager);
+
+        mElapsedRealtime = 0L;
+
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectSystemReady();
+
+        // catch INetworkManagementEventObserver during systemReady()
+        final Capture<INetworkManagementEventObserver> networkObserver = new Capture<
+                INetworkManagementEventObserver>();
+        mNetManager.registerObserver(capture(networkObserver));
+        expectLastCall().atLeastOnce();
+
+        replay();
+        mService.systemReady();
+        mSession = mService.openSession();
+        verifyAndReset();
+
+        mNetworkObserver = networkObserver.getValue();
+
+    }
+
+    @Override
+    public void tearDown() throws Exception {
+        IoUtils.deleteContents(mStatsDir);
+
+        mServiceContext = null;
+        mStatsDir = null;
+
+        mNetManager = null;
+        mAlarmManager = null;
+        mTime = null;
+        mSettings = null;
+        mConnManager = null;
+
+        mSession.close();
+        mService = null;
+
+        super.tearDown();
+    }
+
+    public void testNetworkStatsWifi() throws Exception {
+        // pretend that wifi network comes online; service should ask about full
+        // network state, and poll any existing interfaces before updating.
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+
+        // verify service has empty history for wifi
+        assertNetworkTotal(sTemplateWifi, 0L, 0L, 0L, 0L, 0);
+        verifyAndReset();
+
+        // modify some number on wifi, and trigger poll event
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 1024L, 1L, 2048L, 2L));
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateWifi, 1024L, 1L, 2048L, 2L, 0);
+        verifyAndReset();
+
+        // and bump forward again, with counters going higher. this is
+        // important, since polling should correctly subtract last snapshot.
+        incrementCurrentTime(DAY_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 4096L, 4L, 8192L, 8L));
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateWifi, 4096L, 4L, 8192L, 8L, 0);
+        verifyAndReset();
+
+    }
+
+    public void testStatsRebootPersist() throws Exception {
+        assertStatsFilesExist(false);
+
+        // pretend that wifi network comes online; service should ask about full
+        // network state, and poll any existing interfaces before updating.
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+
+        // verify service has empty history for wifi
+        assertNetworkTotal(sTemplateWifi, 0L, 0L, 0L, 0L, 0);
+        verifyAndReset();
+
+        // modify some number on wifi, and trigger poll event
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 1024L, 8L, 2048L, 16L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 2)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 512L, 4L, 256L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xFAAD, 256L, 2L, 128L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_FOREGROUND, TAG_NONE, 512L, 4L, 256L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_FOREGROUND, 0xFAAD, 256L, 2L, 128L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 128L, 1L, 128L, 1L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.setUidForeground(UID_RED, false);
+        mService.incrementOperationCount(UID_RED, 0xFAAD, 4);
+        mService.setUidForeground(UID_RED, true);
+        mService.incrementOperationCount(UID_RED, 0xFAAD, 6);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateWifi, 1024L, 8L, 2048L, 16L, 0);
+        assertUidTotal(sTemplateWifi, UID_RED, 1024L, 8L, 512L, 4L, 10);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, 512L, 4L, 256L, 2L, 4);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, 512L, 4L, 256L, 2L, 6);
+        assertUidTotal(sTemplateWifi, UID_BLUE, 128L, 1L, 128L, 1L, 0);
+        verifyAndReset();
+
+        // graceful shutdown system, which should trigger persist of stats, and
+        // clear any values in memory.
+        expectCurrentTime();
+        expectDefaultSettings();
+        replay();
+        mServiceContext.sendBroadcast(new Intent(Intent.ACTION_SHUTDOWN));
+        verifyAndReset();
+
+        assertStatsFilesExist(true);
+
+        // boot through serviceReady() again
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectSystemReady();
+
+        // catch INetworkManagementEventObserver during systemReady()
+        final Capture<INetworkManagementEventObserver> networkObserver = new Capture<
+                INetworkManagementEventObserver>();
+        mNetManager.registerObserver(capture(networkObserver));
+        expectLastCall().atLeastOnce();
+
+        replay();
+        mService.systemReady();
+
+        mNetworkObserver = networkObserver.getValue();
+
+        // after systemReady(), we should have historical stats loaded again
+        assertNetworkTotal(sTemplateWifi, 1024L, 8L, 2048L, 16L, 0);
+        assertUidTotal(sTemplateWifi, UID_RED, 1024L, 8L, 512L, 4L, 10);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_DEFAULT, 512L, 4L, 256L, 2L, 4);
+        assertUidTotal(sTemplateWifi, UID_RED, SET_FOREGROUND, 512L, 4L, 256L, 2L, 6);
+        assertUidTotal(sTemplateWifi, UID_BLUE, 128L, 1L, 128L, 1L, 0);
+        verifyAndReset();
+
+    }
+
+    // TODO: simulate reboot to test bucket resize
+    @Suppress
+    public void testStatsBucketResize() throws Exception {
+        NetworkStatsHistory history = null;
+
+        assertStatsFilesExist(false);
+
+        // pretend that wifi network comes online; service should ask about full
+        // network state, and poll any existing interfaces before updating.
+        expectCurrentTime();
+        expectSettings(0L, HOUR_IN_MILLIS, WEEK_IN_MILLIS);
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // modify some number on wifi, and trigger poll event
+        incrementCurrentTime(2 * HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectSettings(0L, HOUR_IN_MILLIS, WEEK_IN_MILLIS);
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 512L, 4L, 512L, 4L));
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        history = mSession.getHistoryForNetwork(sTemplateWifi, FIELD_ALL);
+        assertValues(history, Long.MIN_VALUE, Long.MAX_VALUE, 512L, 4L, 512L, 4L, 0);
+        assertEquals(HOUR_IN_MILLIS, history.getBucketDuration());
+        assertEquals(2, history.size());
+        verifyAndReset();
+
+        // now change bucket duration setting and trigger another poll with
+        // exact same values, which should resize existing buckets.
+        expectCurrentTime();
+        expectSettings(0L, 30 * MINUTE_IN_MILLIS, WEEK_IN_MILLIS);
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify identical stats, but spread across 4 buckets now
+        history = mSession.getHistoryForNetwork(sTemplateWifi, FIELD_ALL);
+        assertValues(history, Long.MIN_VALUE, Long.MAX_VALUE, 512L, 4L, 512L, 4L, 0);
+        assertEquals(30 * MINUTE_IN_MILLIS, history.getBucketDuration());
+        assertEquals(4, history.size());
+        verifyAndReset();
+
+    }
+
+    public void testUidStatsAcrossNetworks() throws Exception {
+        // pretend first mobile network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_1));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some traffic on first network
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 2048L, 16L, 512L, 4L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 3)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1536L, 12L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 512L, 4L, 0L, 0L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xF00D, 10);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateImsi1, 2048L, 16L, 512L, 4L, 0);
+        assertNetworkTotal(sTemplateWifi, 0L, 0L, 0L, 0L, 0);
+        assertUidTotal(sTemplateImsi1, UID_RED, 1536L, 12L, 512L, 4L, 10);
+        assertUidTotal(sTemplateImsi1, UID_BLUE, 512L, 4L, 0L, 0L, 0);
+        verifyAndReset();
+
+        // now switch networks; this also tests that we're okay with interfaces
+        // disappearing, to verify we don't count backwards.
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_2));
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 2048L, 16L, 512L, 4L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 3)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1536L, 12L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 512L, 4L, 0L, 0L, 0L));
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+        verifyAndReset();
+
+        // create traffic on second network
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 2176L, 17L, 1536L, 12L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1536L, 12L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 640L, 5L, 1024L, 8L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, 0xFAAD, 128L, 1L, 1024L, 8L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_BLUE, 0xFAAD, 10);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify original history still intact
+        assertNetworkTotal(sTemplateImsi1, 2048L, 16L, 512L, 4L, 0);
+        assertUidTotal(sTemplateImsi1, UID_RED, 1536L, 12L, 512L, 4L, 10);
+        assertUidTotal(sTemplateImsi1, UID_BLUE, 512L, 4L, 0L, 0L, 0);
+
+        // and verify new history also recorded under different template, which
+        // verifies that we didn't cross the streams.
+        assertNetworkTotal(sTemplateImsi2, 128L, 1L, 1024L, 8L, 0);
+        assertNetworkTotal(sTemplateWifi, 0L, 0L, 0L, 0L, 0);
+        assertUidTotal(sTemplateImsi2, UID_BLUE, 128L, 1L, 1024L, 8L, 10);
+        verifyAndReset();
+
+    }
+
+    public void testUidRemovedIsMoved() throws Exception {
+        // pretend that network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some traffic
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 4128L, 258L, 544L, 34L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 16L, 1L, 16L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xFAAD, 16L, 1L, 16L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 4096L, 258L, 512L, 32L, 0L)
+                .addValues(TEST_IFACE, UID_GREEN, SET_DEFAULT, TAG_NONE, 16L, 1L, 16L, 1L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xFAAD, 10);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateWifi, 4128L, 258L, 544L, 34L, 0);
+        assertUidTotal(sTemplateWifi, UID_RED, 16L, 1L, 16L, 1L, 10);
+        assertUidTotal(sTemplateWifi, UID_BLUE, 4096L, 258L, 512L, 32L, 0);
+        assertUidTotal(sTemplateWifi, UID_GREEN, 16L, 1L, 16L, 1L, 0);
+        verifyAndReset();
+
+        // now pretend two UIDs are uninstalled, which should migrate stats to
+        // special "removed" bucket.
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 4128L, 258L, 544L, 34L));
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 16L, 1L, 16L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xFAAD, 16L, 1L, 16L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 4096L, 258L, 512L, 32L, 0L)
+                .addValues(TEST_IFACE, UID_GREEN, SET_DEFAULT, TAG_NONE, 16L, 1L, 16L, 1L, 0L));
+        expectNetworkStatsPoll();
+
+        replay();
+        final Intent intent = new Intent(ACTION_UID_REMOVED);
+        intent.putExtra(EXTRA_UID, UID_BLUE);
+        mServiceContext.sendBroadcast(intent);
+        intent.putExtra(EXTRA_UID, UID_RED);
+        mServiceContext.sendBroadcast(intent);
+
+        // existing uid and total should remain unchanged; but removed UID
+        // should be gone completely.
+        assertNetworkTotal(sTemplateWifi, 4128L, 258L, 544L, 34L, 0);
+        assertUidTotal(sTemplateWifi, UID_RED, 0L, 0L, 0L, 0L, 0);
+        assertUidTotal(sTemplateWifi, UID_BLUE, 0L, 0L, 0L, 0L, 0);
+        assertUidTotal(sTemplateWifi, UID_GREEN, 16L, 1L, 16L, 1L, 0);
+        assertUidTotal(sTemplateWifi, UID_REMOVED, 4112L, 259L, 528L, 33L, 10);
+        verifyAndReset();
+
+    }
+
+    public void testUid3g4gCombinedByTemplate() throws Exception {
+        // pretend that network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_1));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some traffic
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xF00D, 5);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertUidTotal(sTemplateImsi1, UID_RED, 1024L, 8L, 1024L, 8L, 5);
+        verifyAndReset();
+
+        // now switch over to 4g network
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile4gState(TEST_IFACE2));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L));
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+        verifyAndReset();
+
+        // create traffic on second network
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 1024L, 8L, 1024L, 8L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 512L, 4L, 512L, 4L, 0L)
+                .addValues(TEST_IFACE2, UID_RED, SET_DEFAULT, TAG_NONE, 512L, 4L, 256L, 2L, 0L)
+                .addValues(TEST_IFACE2, UID_RED, SET_DEFAULT, 0xFAAD, 512L, 4L, 256L, 2L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xFAAD, 5);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify that ALL_MOBILE template combines both
+        assertUidTotal(sTemplateImsi1, UID_RED, 1536L, 12L, 1280L, 10L, 10);
+
+        verifyAndReset();
+    }
+
+    public void testSummaryForAllUid() throws Exception {
+        // pretend that network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some traffic for two apps
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 50L, 5L, 50L, 5L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 10L, 1L, 10L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 1024L, 8L, 512L, 4L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xF00D, 1);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertUidTotal(sTemplateWifi, UID_RED, 50L, 5L, 50L, 5L, 1);
+        assertUidTotal(sTemplateWifi, UID_BLUE, 1024L, 8L, 512L, 4L, 0);
+        verifyAndReset();
+
+        // now create more traffic in next hour, but only for one app
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 50L, 5L, 50L, 5L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 10L, 1L, 10L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_BLUE, SET_DEFAULT, TAG_NONE, 2048L, 16L, 1024L, 8L, 0L));
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // first verify entire history present
+        NetworkStats stats = mSession.getSummaryForAllUid(
+                sTemplateWifi, Long.MIN_VALUE, Long.MAX_VALUE, true);
+        assertEquals(3, stats.size());
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, 50L, 5L, 50L, 5L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, 10L, 1L, 10L, 1L, 1);
+        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, 2048L, 16L, 1024L, 8L, 0);
+
+        // now verify that recent history only contains one uid
+        final long currentTime = currentTimeMillis();
+        stats = mSession.getSummaryForAllUid(
+                sTemplateWifi, currentTime - HOUR_IN_MILLIS, currentTime, true);
+        assertEquals(1, stats.size());
+        assertValues(stats, IFACE_ALL, UID_BLUE, SET_DEFAULT, TAG_NONE, 1024L, 8L, 512L, 4L, 0);
+
+        verifyAndReset();
+    }
+
+    public void testForegroundBackground() throws Exception {
+        // pretend that network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildWifiState());
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some initial traffic
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 128L, 2L, 128L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 64L, 1L, 64L, 1L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.incrementOperationCount(UID_RED, 0xF00D, 1);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertUidTotal(sTemplateWifi, UID_RED, 128L, 2L, 128L, 2L, 1);
+        verifyAndReset();
+
+        // now switch to foreground
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 128L, 2L, 128L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, 0xF00D, 64L, 1L, 64L, 1L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_FOREGROUND, TAG_NONE, 32L, 2L, 32L, 2L, 0L)
+                .addValues(TEST_IFACE, UID_RED, SET_FOREGROUND, 0xFAAD, 1L, 1L, 1L, 1L, 0L));
+        expectNetworkStatsPoll();
+
+        mService.setUidForeground(UID_RED, true);
+        mService.incrementOperationCount(UID_RED, 0xFAAD, 1);
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // test that we combined correctly
+        assertUidTotal(sTemplateWifi, UID_RED, 160L, 4L, 160L, 4L, 2);
+
+        // verify entire history present
+        final NetworkStats stats = mSession.getSummaryForAllUid(
+                sTemplateWifi, Long.MIN_VALUE, Long.MAX_VALUE, true);
+        assertEquals(4, stats.size());
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, TAG_NONE, 128L, 2L, 128L, 2L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_DEFAULT, 0xF00D, 64L, 1L, 64L, 1L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, TAG_NONE, 32L, 2L, 32L, 2L, 1);
+        assertValues(stats, IFACE_ALL, UID_RED, SET_FOREGROUND, 0xFAAD, 1L, 1L, 1L, 1L, 1);
+
+        verifyAndReset();
+    }
+
+    public void testTethering() throws Exception {
+        // pretend first mobile network comes online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_1));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some tethering traffic
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummary(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 2048L, 16L, 512L, 4L));
+
+        final NetworkStats uidStats = new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, 128L, 2L, 128L, 2L, 0L);
+        final String[] tetherIfacePairs = new String[] { TEST_IFACE, "wlan0" };
+        final NetworkStats tetherStats = new NetworkStats(getElapsedRealtime(), 1)
+                .addValues(TEST_IFACE, UID_TETHERING, SET_DEFAULT, TAG_NONE, 1920L, 14L, 384L, 2L, 0L);
+
+        expectNetworkStatsUidDetail(uidStats, tetherIfacePairs, tetherStats);
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history
+        assertNetworkTotal(sTemplateImsi1, 2048L, 16L, 512L, 4L, 0);
+        assertUidTotal(sTemplateImsi1, UID_RED, 128L, 2L, 128L, 2L, 0);
+        assertUidTotal(sTemplateImsi1, UID_TETHERING, 1920L, 14L, 384L, 2L, 0);
+        verifyAndReset();
+
+    }
+
+    public void testReportXtOverDev() throws Exception {
+        // bring mobile network online
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkState(buildMobile3gState(IMSI_1));
+        expectNetworkStatsSummary(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
+        verifyAndReset();
+
+        // create some traffic, but only for DEV, and across 1.5 buckets
+        incrementCurrentTime(90 * MINUTE_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummaryDev(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 6000L, 60L, 3000L, 30L));
+        expectNetworkStatsSummaryXt(buildEmptyStats());
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify service recorded history:
+        // 4000(dev) + 2000(dev)
+        assertNetworkTotal(sTemplateImsi1, 6000L, 60L, 3000L, 30L, 0);
+        verifyAndReset();
+
+        // create traffic on both DEV and XT, across two buckets
+        incrementCurrentTime(2 * HOUR_IN_MILLIS);
+        expectCurrentTime();
+        expectDefaultSettings();
+        expectNetworkStatsSummaryDev(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 6004L, 64L, 3004L, 34L));
+        expectNetworkStatsSummaryXt(new NetworkStats(getElapsedRealtime(), 1)
+                .addIfaceValues(TEST_IFACE, 10240L, 0L, 0L, 0L));
+        expectNetworkStatsUidDetail(buildEmptyStats());
+        expectNetworkStatsPoll();
+
+        replay();
+        mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
+
+        // verify that we switching reporting at the first atomic XT bucket,
+        // which should give us:
+        // 4000(dev) + 2000(dev) + 1(dev) + 5120(xt) + 2560(xt)
+        assertNetworkTotal(sTemplateImsi1, 13681L, 61L, 3001L, 31L, 0);
+
+        // also test pure-DEV and pure-XT ranges
+        assertNetworkTotal(sTemplateImsi1, startTimeMillis(),
+                startTimeMillis() + 2 * HOUR_IN_MILLIS, 6001L, 61L, 3001L, 31L, 0);
+        assertNetworkTotal(sTemplateImsi1, startTimeMillis() + 2 * HOUR_IN_MILLIS,
+                startTimeMillis() + 4 * HOUR_IN_MILLIS, 7680L, 0L, 0L, 0L, 0);
+
+        verifyAndReset();
+    }
+
+    private void assertNetworkTotal(NetworkTemplate template, long rxBytes, long rxPackets,
+            long txBytes, long txPackets, int operations) throws Exception {
+        assertNetworkTotal(template, Long.MIN_VALUE, Long.MAX_VALUE, rxBytes, rxPackets, txBytes,
+                txPackets, operations);
+    }
+
+    private void assertNetworkTotal(NetworkTemplate template, long start, long end, long rxBytes,
+            long rxPackets, long txBytes, long txPackets, int operations) throws Exception {
+        // verify history API
+        final NetworkStatsHistory history = mSession.getHistoryForNetwork(template, FIELD_ALL);
+        assertValues(history, start, end, rxBytes, rxPackets, txBytes, txPackets, operations);
+
+        // verify summary API
+        final NetworkStats stats = mSession.getSummaryForNetwork(template, start, end);
+        assertValues(stats, IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, rxBytes, rxPackets, txBytes,
+                txPackets, operations);
+    }
+
+    private void assertUidTotal(NetworkTemplate template, int uid, long rxBytes, long rxPackets,
+            long txBytes, long txPackets, int operations) throws Exception {
+        assertUidTotal(template, uid, SET_ALL, rxBytes, rxPackets, txBytes, txPackets, operations);
+    }
+
+    private void assertUidTotal(NetworkTemplate template, int uid, int set, long rxBytes,
+            long rxPackets, long txBytes, long txPackets, int operations) throws Exception {
+        // verify history API
+        final NetworkStatsHistory history = mSession.getHistoryForUid(
+                template, uid, set, TAG_NONE, FIELD_ALL);
+        assertValues(history, Long.MIN_VALUE, Long.MAX_VALUE, rxBytes, rxPackets, txBytes,
+                txPackets, operations);
+
+        // verify summary API
+        final NetworkStats stats = mSession.getSummaryForAllUid(
+                template, Long.MIN_VALUE, Long.MAX_VALUE, false);
+        assertValues(stats, IFACE_ALL, uid, set, TAG_NONE, rxBytes, rxPackets, txBytes, txPackets,
+                operations);
+    }
+
+    private void expectSystemReady() throws Exception {
+        mAlarmManager.remove(isA(PendingIntent.class));
+        expectLastCall().anyTimes();
+
+        mAlarmManager.set(eq(AlarmManager.ELAPSED_REALTIME), anyLong(), anyLong(), anyLong(),
+                isA(PendingIntent.class), isA(WorkSource.class));
+        expectLastCall().atLeastOnce();
+
+        mNetManager.setGlobalAlert(anyLong());
+        expectLastCall().atLeastOnce();
+
+        expect(mNetManager.isBandwidthControlEnabled()).andReturn(true).atLeastOnce();
+    }
+
+    private void expectNetworkState(NetworkState... state) throws Exception {
+        expect(mConnManager.getAllNetworkState()).andReturn(state).atLeastOnce();
+
+        final LinkProperties linkProp = state.length > 0 ? state[0].linkProperties : null;
+        expect(mConnManager.getActiveLinkProperties()).andReturn(linkProp).atLeastOnce();
+    }
+
+    private void expectNetworkStatsSummary(NetworkStats summary) throws Exception {
+        expectNetworkStatsSummaryDev(summary);
+        expectNetworkStatsSummaryXt(summary);
+    }
+
+    private void expectNetworkStatsSummaryDev(NetworkStats summary) throws Exception {
+        expect(mNetManager.getNetworkStatsSummaryDev()).andReturn(summary).atLeastOnce();
+    }
+
+    private void expectNetworkStatsSummaryXt(NetworkStats summary) throws Exception {
+        expect(mNetManager.getNetworkStatsSummaryXt()).andReturn(summary).atLeastOnce();
+    }
+
+    private void expectNetworkStatsUidDetail(NetworkStats detail) throws Exception {
+        expectNetworkStatsUidDetail(detail, new String[0], new NetworkStats(0L, 0));
+    }
+
+    private void expectNetworkStatsUidDetail(
+            NetworkStats detail, String[] tetherIfacePairs, NetworkStats tetherStats)
+            throws Exception {
+        expect(mNetManager.getNetworkStatsUidDetail(eq(UID_ALL))).andReturn(detail).atLeastOnce();
+
+        // also include tethering details, since they are folded into UID
+        expect(mNetManager.getNetworkStatsTethering())
+                .andReturn(tetherStats).atLeastOnce();
+    }
+
+    private void expectDefaultSettings() throws Exception {
+        expectSettings(0L, HOUR_IN_MILLIS, WEEK_IN_MILLIS);
+    }
+
+    private void expectSettings(long persistBytes, long bucketDuration, long deleteAge)
+            throws Exception {
+        expect(mSettings.getPollInterval()).andReturn(HOUR_IN_MILLIS).anyTimes();
+        expect(mSettings.getTimeCacheMaxAge()).andReturn(DAY_IN_MILLIS).anyTimes();
+        expect(mSettings.getSampleEnabled()).andReturn(true).anyTimes();
+        expect(mSettings.getReportXtOverDev()).andReturn(true).anyTimes();
+
+        final Config config = new Config(bucketDuration, deleteAge, deleteAge);
+        expect(mSettings.getDevConfig()).andReturn(config).anyTimes();
+        expect(mSettings.getXtConfig()).andReturn(config).anyTimes();
+        expect(mSettings.getUidConfig()).andReturn(config).anyTimes();
+        expect(mSettings.getUidTagConfig()).andReturn(config).anyTimes();
+
+        expect(mSettings.getGlobalAlertBytes(anyLong())).andReturn(MB_IN_BYTES).anyTimes();
+        expect(mSettings.getDevPersistBytes(anyLong())).andReturn(MB_IN_BYTES).anyTimes();
+        expect(mSettings.getXtPersistBytes(anyLong())).andReturn(MB_IN_BYTES).anyTimes();
+        expect(mSettings.getUidPersistBytes(anyLong())).andReturn(MB_IN_BYTES).anyTimes();
+        expect(mSettings.getUidTagPersistBytes(anyLong())).andReturn(MB_IN_BYTES).anyTimes();
+    }
+
+    private void expectCurrentTime() throws Exception {
+        expect(mTime.forceRefresh()).andReturn(false).anyTimes();
+        expect(mTime.hasCache()).andReturn(true).anyTimes();
+        expect(mTime.currentTimeMillis()).andReturn(currentTimeMillis()).anyTimes();
+        expect(mTime.getCacheAge()).andReturn(0L).anyTimes();
+        expect(mTime.getCacheCertainty()).andReturn(0L).anyTimes();
+    }
+
+    private void expectNetworkStatsPoll() throws Exception {
+        mNetManager.setGlobalAlert(anyLong());
+        expectLastCall().anyTimes();
+    }
+
+    private void assertStatsFilesExist(boolean exist) {
+        final File basePath = new File(mStatsDir, "netstats");
+        if (exist) {
+            assertTrue(basePath.list().length > 0);
+        } else {
+            assertTrue(basePath.list().length == 0);
+        }
+    }
+
+    private static void assertValues(NetworkStats stats, String iface, int uid, int set,
+            int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, int operations) {
+        final NetworkStats.Entry entry = new NetworkStats.Entry();
+        if (set == SET_DEFAULT || set == SET_ALL) {
+            final int i = stats.findIndex(iface, uid, SET_DEFAULT, tag);
+            if (i != -1) {
+                entry.add(stats.getValues(i, null));
+            }
+        }
+        if (set == SET_FOREGROUND || set == SET_ALL) {
+            final int i = stats.findIndex(iface, uid, SET_FOREGROUND, tag);
+            if (i != -1) {
+                entry.add(stats.getValues(i, null));
+            }
+        }
+
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+        assertEquals("unexpected operations", operations, entry.operations);
+    }
+
+    private static void assertValues(NetworkStatsHistory stats, long start, long end, long rxBytes,
+            long rxPackets, long txBytes, long txPackets, int operations) {
+        final NetworkStatsHistory.Entry entry = stats.getValues(start, end, null);
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+        assertEquals("unexpected operations", operations, entry.operations);
+    }
+
+    private static NetworkState buildWifiState() {
+        final NetworkInfo info = new NetworkInfo(TYPE_WIFI, 0, null, null);
+        info.setDetailedState(DetailedState.CONNECTED, null, null);
+        final LinkProperties prop = new LinkProperties();
+        prop.setInterfaceName(TEST_IFACE);
+        return new NetworkState(info, prop, null, null, TEST_SSID);
+    }
+
+    private static NetworkState buildMobile3gState(String subscriberId) {
+        final NetworkInfo info = new NetworkInfo(
+                TYPE_MOBILE, TelephonyManager.NETWORK_TYPE_UMTS, null, null);
+        info.setDetailedState(DetailedState.CONNECTED, null, null);
+        final LinkProperties prop = new LinkProperties();
+        prop.setInterfaceName(TEST_IFACE);
+        return new NetworkState(info, prop, null, subscriberId, null);
+    }
+
+    private static NetworkState buildMobile4gState(String iface) {
+        final NetworkInfo info = new NetworkInfo(TYPE_WIMAX, 0, null, null);
+        info.setDetailedState(DetailedState.CONNECTED, null, null);
+        final LinkProperties prop = new LinkProperties();
+        prop.setInterfaceName(iface);
+        return new NetworkState(info, prop, null);
+    }
+
+    private NetworkStats buildEmptyStats() {
+        return new NetworkStats(getElapsedRealtime(), 0);
+    }
+
+    private long getElapsedRealtime() {
+        return mElapsedRealtime;
+    }
+
+    private long startTimeMillis() {
+        return TEST_START;
+    }
+
+    private long currentTimeMillis() {
+        return startTimeMillis() + mElapsedRealtime;
+    }
+
+    private void incrementCurrentTime(long duration) {
+        mElapsedRealtime += duration;
+    }
+
+    private void replay() {
+        EasyMock.replay(mNetManager, mAlarmManager, mTime, mSettings, mConnManager);
+    }
+
+    private void verifyAndReset() {
+        EasyMock.verify(mNetManager, mAlarmManager, mTime, mSettings, mConnManager);
+        EasyMock.reset(mNetManager, mAlarmManager, mTime, mSettings, mConnManager);
+    }
+}
diff --git a/services/tests/servicestests/src/com/android/server/net/NetworkStatsCollectionTest.java b/services/tests/servicestests/src/com/android/server/net/NetworkStatsCollectionTest.java
new file mode 100644
index 0000000..1a6c289
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/net/NetworkStatsCollectionTest.java
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.net;
+
+import static android.net.NetworkStats.SET_DEFAULT;
+import static android.net.NetworkStats.TAG_NONE;
+import static android.net.NetworkStats.UID_ALL;
+import static android.net.NetworkTemplate.buildTemplateMobileAll;
+import static android.text.format.DateUtils.HOUR_IN_MILLIS;
+import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
+
+import android.content.res.Resources;
+import android.net.NetworkStats;
+import android.net.NetworkTemplate;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.MediumTest;
+
+import com.android.frameworks.servicestests.R;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import libcore.io.IoUtils;
+import libcore.io.Streams;
+
+/**
+ * Tests for {@link NetworkStatsCollection}.
+ */
+@MediumTest
+public class NetworkStatsCollectionTest extends AndroidTestCase {
+
+    private static final String TEST_FILE = "test.bin";
+    private static final String TEST_IMSI = "310260000000000";
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        // ignore any device overlay while testing
+        NetworkTemplate.forceAllNetworkTypes();
+    }
+
+    public void testReadLegacyNetwork() throws Exception {
+        final File testFile = new File(getContext().getFilesDir(), TEST_FILE);
+        stageFile(R.raw.netstats_v1, testFile);
+
+        final NetworkStatsCollection collection = new NetworkStatsCollection(30 * MINUTE_IN_MILLIS);
+        collection.readLegacyNetwork(testFile);
+
+        // verify that history read correctly
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                636016770L, 709306L, 88038768L, 518836L);
+
+        // now export into a unified format
+        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        collection.write(new DataOutputStream(bos));
+
+        // clear structure completely
+        collection.reset();
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                0L, 0L, 0L, 0L);
+
+        // and read back into structure, verifying that totals are same
+        collection.read(new ByteArrayInputStream(bos.toByteArray()));
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                636016770L, 709306L, 88038768L, 518836L);
+    }
+
+    public void testReadLegacyUid() throws Exception {
+        final File testFile = new File(getContext().getFilesDir(), TEST_FILE);
+        stageFile(R.raw.netstats_uid_v4, testFile);
+
+        final NetworkStatsCollection collection = new NetworkStatsCollection(30 * MINUTE_IN_MILLIS);
+        collection.readLegacyUid(testFile, false);
+
+        // verify that history read correctly
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                637076152L, 711413L, 88343717L, 521022L);
+
+        // now export into a unified format
+        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        collection.write(new DataOutputStream(bos));
+
+        // clear structure completely
+        collection.reset();
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                0L, 0L, 0L, 0L);
+
+        // and read back into structure, verifying that totals are same
+        collection.read(new ByteArrayInputStream(bos.toByteArray()));
+        assertSummaryTotal(collection, buildTemplateMobileAll(TEST_IMSI),
+                637076152L, 711413L, 88343717L, 521022L);
+    }
+
+    public void testReadLegacyUidTags() throws Exception {
+        final File testFile = new File(getContext().getFilesDir(), TEST_FILE);
+        stageFile(R.raw.netstats_uid_v4, testFile);
+
+        final NetworkStatsCollection collection = new NetworkStatsCollection(30 * MINUTE_IN_MILLIS);
+        collection.readLegacyUid(testFile, true);
+
+        // verify that history read correctly
+        assertSummaryTotalIncludingTags(collection, buildTemplateMobileAll(TEST_IMSI),
+                77017831L, 100995L, 35436758L, 92344L);
+
+        // now export into a unified format
+        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        collection.write(new DataOutputStream(bos));
+
+        // clear structure completely
+        collection.reset();
+        assertSummaryTotalIncludingTags(collection, buildTemplateMobileAll(TEST_IMSI),
+                0L, 0L, 0L, 0L);
+
+        // and read back into structure, verifying that totals are same
+        collection.read(new ByteArrayInputStream(bos.toByteArray()));
+        assertSummaryTotalIncludingTags(collection, buildTemplateMobileAll(TEST_IMSI),
+                77017831L, 100995L, 35436758L, 92344L);
+    }
+
+    public void testStartEndAtomicBuckets() throws Exception {
+        final NetworkStatsCollection collection = new NetworkStatsCollection(HOUR_IN_MILLIS);
+
+        // record empty data straddling between buckets
+        final NetworkStats.Entry entry = new NetworkStats.Entry();
+        entry.rxBytes = 32;
+        collection.recordData(null, UID_ALL, SET_DEFAULT, TAG_NONE, 30 * MINUTE_IN_MILLIS,
+                90 * MINUTE_IN_MILLIS, entry);
+
+        // assert that we report boundary in atomic buckets
+        assertEquals(0, collection.getStartMillis());
+        assertEquals(2 * HOUR_IN_MILLIS, collection.getEndMillis());
+    }
+
+    /**
+     * Copy a {@link Resources#openRawResource(int)} into {@link File} for
+     * testing purposes.
+     */
+    private void stageFile(int rawId, File file) throws Exception {
+        new File(file.getParent()).mkdirs();
+        InputStream in = null;
+        OutputStream out = null;
+        try {
+            in = getContext().getResources().openRawResource(rawId);
+            out = new FileOutputStream(file);
+            Streams.copy(in, out);
+        } finally {
+            IoUtils.closeQuietly(in);
+            IoUtils.closeQuietly(out);
+        }
+    }
+
+    private static void assertSummaryTotal(NetworkStatsCollection collection,
+            NetworkTemplate template, long rxBytes, long rxPackets, long txBytes, long txPackets) {
+        final NetworkStats.Entry entry = collection.getSummary(
+                template, Long.MIN_VALUE, Long.MAX_VALUE).getTotal(null);
+        assertEntry(entry, rxBytes, rxPackets, txBytes, txPackets);
+    }
+
+    private static void assertSummaryTotalIncludingTags(NetworkStatsCollection collection,
+            NetworkTemplate template, long rxBytes, long rxPackets, long txBytes, long txPackets) {
+        final NetworkStats.Entry entry = collection.getSummary(
+                template, Long.MIN_VALUE, Long.MAX_VALUE).getTotalIncludingTags(null);
+        assertEntry(entry, rxBytes, rxPackets, txBytes, txPackets);
+    }
+
+    private static void assertEntry(
+            NetworkStats.Entry entry, long rxBytes, long rxPackets, long txBytes, long txPackets) {
+        assertEquals("unexpected rxBytes", rxBytes, entry.rxBytes);
+        assertEquals("unexpected rxPackets", rxPackets, entry.rxPackets);
+        assertEquals("unexpected txBytes", txBytes, entry.txBytes);
+        assertEquals("unexpected txPackets", txPackets, entry.txPackets);
+    }
+}
diff --git a/tests/CoreTests/android/core/NsdServiceInfoTest.java b/tests/CoreTests/android/core/NsdServiceInfoTest.java
new file mode 100644
index 0000000..5bf0167
--- /dev/null
+++ b/tests/CoreTests/android/core/NsdServiceInfoTest.java
@@ -0,0 +1,163 @@
+package android.core;
+
+import android.test.AndroidTestCase;
+
+import android.os.Bundle;
+import android.os.Parcel;
+import android.os.StrictMode;
+import android.net.nsd.NsdServiceInfo;
+import android.util.Log;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+
+public class NsdServiceInfoTest extends AndroidTestCase {
+
+    public final static InetAddress LOCALHOST;
+    static {
+        // Because test.
+        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
+        StrictMode.setThreadPolicy(policy);
+
+        InetAddress _host = null;
+        try {
+            _host = InetAddress.getLocalHost();
+        } catch (UnknownHostException e) { }
+        LOCALHOST = _host;
+    }
+
+    public void testLimits() throws Exception {
+        NsdServiceInfo info = new NsdServiceInfo();
+
+        // Non-ASCII keys.
+        boolean exceptionThrown = false;
+        try {
+            info.setAttribute("猫", "meow");
+        } catch (IllegalArgumentException e) {
+            exceptionThrown = true;
+        }
+        assertTrue(exceptionThrown);
+        assertEmptyServiceInfo(info);
+
+        // ASCII keys with '=' character.
+        exceptionThrown = false;
+        try {
+            info.setAttribute("kitten=", "meow");
+        } catch (IllegalArgumentException e) {
+            exceptionThrown = true;
+        }
+        assertTrue(exceptionThrown);
+        assertEmptyServiceInfo(info);
+
+        // Single key + value length too long.
+        exceptionThrown = false;
+        try {
+            String longValue = "loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
+                    "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
+                    "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
+                    "ooooooooooooooooooooooooooooong";  // 248 characters.
+            info.setAttribute("longcat", longValue);  // Key + value == 255 characters.
+        } catch (IllegalArgumentException e) {
+            exceptionThrown = true;
+        }
+        assertTrue(exceptionThrown);
+        assertEmptyServiceInfo(info);
+
+        // Total TXT record length too long.
+        exceptionThrown = false;
+        int recordsAdded = 0;
+        try {
+            for (int i = 100; i < 300; ++i) {
+                // 6 char key + 5 char value + 2 bytes overhead = 13 byte record length.
+                String key = String.format("key%d", i);
+                info.setAttribute(key, "12345");
+                recordsAdded++;
+            }
+        } catch (IllegalArgumentException e) {
+            exceptionThrown = true;
+        }
+        assertTrue(exceptionThrown);
+        assertTrue(100 == recordsAdded);
+        assertTrue(info.getTxtRecord().length == 1300);
+    }
+
+    public void testParcel() throws Exception {
+        NsdServiceInfo emptyInfo = new NsdServiceInfo();
+        checkParcelable(emptyInfo);
+
+        NsdServiceInfo fullInfo = new NsdServiceInfo();
+        fullInfo.setServiceName("kitten");
+        fullInfo.setServiceType("_kitten._tcp");
+        fullInfo.setPort(4242);
+        fullInfo.setHost(LOCALHOST);
+        checkParcelable(fullInfo);
+
+        NsdServiceInfo noHostInfo = new NsdServiceInfo();
+        noHostInfo.setServiceName("kitten");
+        noHostInfo.setServiceType("_kitten._tcp");
+        noHostInfo.setPort(4242);
+        checkParcelable(noHostInfo);
+
+        NsdServiceInfo attributedInfo = new NsdServiceInfo();
+        attributedInfo.setServiceName("kitten");
+        attributedInfo.setServiceType("_kitten._tcp");
+        attributedInfo.setPort(4242);
+        attributedInfo.setHost(LOCALHOST);
+        attributedInfo.setAttribute("color", "pink");
+        attributedInfo.setAttribute("sound", (new String("にゃあ")).getBytes("UTF-8"));
+        attributedInfo.setAttribute("adorable", (String) null);
+        attributedInfo.setAttribute("sticky", "yes");
+        attributedInfo.setAttribute("siblings", new byte[] {});
+        attributedInfo.setAttribute("edge cases", new byte[] {0, -1, 127, -128});
+        attributedInfo.removeAttribute("sticky");
+        checkParcelable(attributedInfo);
+
+        // Sanity check that we actually wrote attributes to attributedInfo.
+        assertTrue(attributedInfo.getAttributes().keySet().contains("adorable"));
+        String sound = new String(attributedInfo.getAttributes().get("sound"), "UTF-8");
+        assertTrue(sound.equals("にゃあ"));
+        byte[] edgeCases = attributedInfo.getAttributes().get("edge cases");
+        assertTrue(Arrays.equals(edgeCases, new byte[] {0, -1, 127, -128}));
+        assertFalse(attributedInfo.getAttributes().keySet().contains("sticky"));
+    }
+
+    public void checkParcelable(NsdServiceInfo original) {
+        // Write to parcel.
+        Parcel p = Parcel.obtain();
+        Bundle writer = new Bundle();
+        writer.putParcelable("test_info", original);
+        writer.writeToParcel(p, 0);
+
+        // Extract from parcel.
+        p.setDataPosition(0);
+        Bundle reader = p.readBundle();
+        reader.setClassLoader(NsdServiceInfo.class.getClassLoader());
+        NsdServiceInfo result = reader.getParcelable("test_info");
+
+        // Assert equality of base fields.
+        assertEquality(original.getServiceName(), result.getServiceName());
+        assertEquality(original.getServiceType(), result.getServiceType());
+        assertEquality(original.getHost(), result.getHost());
+        assertTrue(original.getPort() == result.getPort());
+
+        // Assert equality of attribute map.
+        Map<String, byte[]> originalMap = original.getAttributes();
+        Map<String, byte[]> resultMap = result.getAttributes();
+        assertEquality(originalMap.keySet(), resultMap.keySet());
+        for (String key : originalMap.keySet()) {
+            assertTrue(Arrays.equals(originalMap.get(key), resultMap.get(key)));
+        }
+    }
+
+    public void assertEquality(Object expected, Object result) {
+        assertTrue(expected == result || expected.equals(result));
+    }
+
+    public void assertEmptyServiceInfo(NsdServiceInfo shouldBeEmpty) {
+        assertTrue(null == shouldBeEmpty.getTxtRecord());
+    }
+}