diff --git a/core/java/android/net/IpPrefix.java b/core/java/android/net/IpPrefix.java
index 4631c56..b996cda 100644
--- a/core/java/android/net/IpPrefix.java
+++ b/core/java/android/net/IpPrefix.java
@@ -16,6 +16,8 @@
 
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.Pair;
@@ -83,6 +85,8 @@
      * @param prefixLength the prefix length. Must be &gt;= 0 and &lt;= (32 or 128) (IPv4 or IPv6).
      * @hide
      */
+    @SystemApi
+    @TestApi
     public IpPrefix(InetAddress address, int prefixLength) {
         // We don't reuse the (byte[], int) constructor because it calls clone() on the byte array,
         // which is unnecessary because getAddress() already returns a clone.
diff --git a/core/java/android/net/LinkAddress.java b/core/java/android/net/LinkAddress.java
index a536d08..fbd602c 100644
--- a/core/java/android/net/LinkAddress.java
+++ b/core/java/android/net/LinkAddress.java
@@ -162,6 +162,8 @@
      *              {@link OsConstants#RT_SCOPE_LINK} or {@link OsConstants#RT_SCOPE_SITE}).
      * @hide
      */
+    @SystemApi
+    @TestApi
     public LinkAddress(InetAddress address, int prefixLength, int flags, int scope) {
         init(address, prefixLength, flags, scope);
     }
diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
index 21b6a8e..6628701 100644
--- a/core/java/android/net/LinkProperties.java
+++ b/core/java/android/net/LinkProperties.java
@@ -174,7 +174,8 @@
     /**
      * @hide
      */
-    @UnsupportedAppUsage
+    @SystemApi
+    @TestApi
     public LinkProperties(LinkProperties source) {
         if (source != null) {
             mIfaceName = source.mIfaceName;
@@ -576,6 +577,8 @@
      * @param addresses The {@link Collection} of PCSCF servers to set in this object.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public void setPcscfServers(Collection<InetAddress> pcscfServers) {
         mPcscfs.clear();
         for (InetAddress pcscfServer: pcscfServers) {
@@ -590,6 +593,8 @@
      *         this link.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public List<InetAddress> getPcscfServers() {
         return Collections.unmodifiableList(mPcscfs);
     }
@@ -781,6 +786,8 @@
      * @return the NAT64 prefix.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public @Nullable IpPrefix getNat64Prefix() {
         return mNat64Prefix;
     }
@@ -794,6 +801,8 @@
      * @param prefix the NAT64 prefix.
      * @hide
      */
+    @SystemApi
+    @TestApi
     public void setNat64Prefix(IpPrefix prefix) {
         if (prefix != null && prefix.getPrefixLength() != 96) {
             throw new IllegalArgumentException("Only 96-bit prefixes are supported: " + prefix);
diff --git a/core/java/android/net/ProxyInfo.java b/core/java/android/net/ProxyInfo.java
index e926fda..ef2269a 100644
--- a/core/java/android/net/ProxyInfo.java
+++ b/core/java/android/net/ProxyInfo.java
@@ -39,12 +39,12 @@
  */
 public class ProxyInfo implements Parcelable {
 
-    private String mHost;
-    private int mPort;
-    private String mExclusionList;
-    private String[] mParsedExclusionList;
+    private final String mHost;
+    private final int mPort;
+    private final String mExclusionList;
+    private final String[] mParsedExclusionList;
+    private final Uri mPacFileUrl;
 
-    private Uri mPacFileUrl;
     /**
      *@hide
      */
@@ -96,7 +96,8 @@
     public ProxyInfo(String host, int port, String exclList) {
         mHost = host;
         mPort = port;
-        setExclusionList(exclList);
+        mExclusionList = exclList;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         mPacFileUrl = Uri.EMPTY;
     }
 
@@ -107,7 +108,8 @@
     public ProxyInfo(Uri pacFileUrl) {
         mHost = LOCAL_HOST;
         mPort = LOCAL_PORT;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         if (pacFileUrl == null) {
             throw new NullPointerException();
         }
@@ -121,7 +123,8 @@
     public ProxyInfo(String pacFileUrl) {
         mHost = LOCAL_HOST;
         mPort = LOCAL_PORT;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         mPacFileUrl = Uri.parse(pacFileUrl);
     }
 
@@ -132,13 +135,22 @@
     public ProxyInfo(Uri pacFileUrl, int localProxyPort) {
         mHost = LOCAL_HOST;
         mPort = localProxyPort;
-        setExclusionList(LOCAL_EXCL_LIST);
+        mExclusionList = LOCAL_EXCL_LIST;
+        mParsedExclusionList = parseExclusionList(mExclusionList);
         if (pacFileUrl == null) {
             throw new NullPointerException();
         }
         mPacFileUrl = pacFileUrl;
     }
 
+    private static String[] parseExclusionList(String exclusionList) {
+        if (exclusionList == null) {
+            return new String[0];
+        } else {
+            return exclusionList.toLowerCase(Locale.ROOT).split(",");
+        }
+    }
+
     private ProxyInfo(String host, int port, String exclList, String[] parsedExclList) {
         mHost = host;
         mPort = port;
@@ -159,6 +171,10 @@
             mExclusionList = source.getExclusionListAsString();
             mParsedExclusionList = source.mParsedExclusionList;
         } else {
+            mHost = null;
+            mPort = 0;
+            mExclusionList = null;
+            mParsedExclusionList = null;
             mPacFileUrl = Uri.EMPTY;
         }
     }
@@ -214,24 +230,14 @@
         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);
+                mPort == 0 ? "" : Integer.toString(mPort),
+                mExclusionList == null ? "" : mExclusionList);
     }
 
     /**
@@ -262,7 +268,7 @@
             sb.append("] ");
             sb.append(Integer.toString(mPort));
             if (mExclusionList != null) {
-                    sb.append(" xl=").append(mExclusionList);
+                sb.append(" xl=").append(mExclusionList);
             }
         } else {
             sb.append("[ProxyProperties.mHost == null]");
@@ -308,8 +314,8 @@
      */
     public int hashCode() {
         return ((null == mHost) ? 0 : mHost.hashCode())
-        + ((null == mExclusionList) ? 0 : mExclusionList.hashCode())
-        + mPort;
+                + ((null == mExclusionList) ? 0 : mExclusionList.hashCode())
+                + mPort;
     }
 
     /**
@@ -352,8 +358,7 @@
                 }
                 String exclList = in.readString();
                 String[] parsedExclList = in.readStringArray();
-                ProxyInfo proxyProperties =
-                        new ProxyInfo(host, port, exclList, parsedExclList);
+                ProxyInfo proxyProperties = new ProxyInfo(host, port, exclList, parsedExclList);
                 return proxyProperties;
             }
 
diff --git a/core/java/android/net/RouteInfo.java b/core/java/android/net/RouteInfo.java
index 6bf2c67..5c0f758 100644
--- a/core/java/android/net/RouteInfo.java
+++ b/core/java/android/net/RouteInfo.java
@@ -110,6 +110,8 @@
      *
      * @hide
      */
+    @SystemApi
+    @TestApi
     public RouteInfo(IpPrefix destination, InetAddress gateway, String iface, int type) {
         switch (type) {
             case RTN_UNICAST:
diff --git a/core/java/android/net/StaticIpConfiguration.java b/core/java/android/net/StaticIpConfiguration.java
index 3aa56b9..25bae3c 100644
--- a/core/java/android/net/StaticIpConfiguration.java
+++ b/core/java/android/net/StaticIpConfiguration.java
@@ -16,10 +16,11 @@
 
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
-import android.net.LinkAddress;
-import android.os.Parcelable;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 import java.net.InetAddress;
 import java.util.ArrayList;
@@ -46,17 +47,22 @@
  *
  * @hide
  */
-public class StaticIpConfiguration implements Parcelable {
+@SystemApi
+@TestApi
+public final class StaticIpConfiguration implements Parcelable {
+    /** @hide */
     @UnsupportedAppUsage
     public LinkAddress ipAddress;
+    /** @hide */
     @UnsupportedAppUsage
     public InetAddress gateway;
+    /** @hide */
     @UnsupportedAppUsage
     public final ArrayList<InetAddress> dnsServers;
+    /** @hide */
     @UnsupportedAppUsage
     public String domains;
 
-    @UnsupportedAppUsage
     public StaticIpConfiguration() {
         dnsServers = new ArrayList<InetAddress>();
     }
@@ -79,6 +85,41 @@
         domains = null;
     }
 
+    public LinkAddress getIpAddress() {
+        return ipAddress;
+    }
+
+    public void setIpAddress(LinkAddress ipAddress) {
+        this.ipAddress = ipAddress;
+    }
+
+    public InetAddress getGateway() {
+        return gateway;
+    }
+
+    public void setGateway(InetAddress gateway) {
+        this.gateway = gateway;
+    }
+
+    public List<InetAddress> getDnsServers() {
+        return dnsServers;
+    }
+
+    public String getDomains() {
+        return domains;
+    }
+
+    public void setDomains(String newDomains) {
+        domains = newDomains;
+    }
+
+    /**
+     * Add a DNS server to this configuration.
+     */
+    public void addDnsServer(InetAddress server) {
+        dnsServers.add(server);
+    }
+
     /**
      * Returns the network routes specified by this object. Will typically include a
      * directly-connected route for the IP address's local subnet and a default route. If the
@@ -86,7 +127,6 @@
      * route to the gateway as well. This configuration is arguably invalid, but it used to work
      * in K and earlier, and other OSes appear to accept it.
      */
-    @UnsupportedAppUsage
     public List<RouteInfo> getRoutes(String iface) {
         List<RouteInfo> routes = new ArrayList<RouteInfo>(3);
         if (ipAddress != null) {
@@ -107,6 +147,7 @@
      * contained in the LinkProperties will not be a complete picture of the link's configuration,
      * because any configuration information that is obtained dynamically by the network (e.g.,
      * IPv6 configuration) will not be included.
+     * @hide
      */
     public LinkProperties toLinkProperties(String iface) {
         LinkProperties lp = new LinkProperties();
@@ -124,6 +165,7 @@
         return lp;
     }
 
+    @Override
     public String toString() {
         StringBuffer str = new StringBuffer();
 
@@ -143,6 +185,7 @@
         return str.toString();
     }
 
+    @Override
     public int hashCode() {
         int result = 13;
         result = 47 * result + (ipAddress == null ? 0 : ipAddress.hashCode());
@@ -168,12 +211,10 @@
     }
 
     /** Implement the Parcelable interface */
-    public static Creator<StaticIpConfiguration> CREATOR =
+    public static final Creator<StaticIpConfiguration> CREATOR =
         new Creator<StaticIpConfiguration>() {
             public StaticIpConfiguration createFromParcel(Parcel in) {
-                StaticIpConfiguration s = new StaticIpConfiguration();
-                readFromParcel(s, in);
-                return s;
+                return readFromParcel(in);
             }
 
             public StaticIpConfiguration[] newArray(int size) {
@@ -182,11 +223,13 @@
         };
 
     /** Implement the Parcelable interface */
+    @Override
     public int describeContents() {
         return 0;
     }
 
     /** Implement the Parcelable interface */
+    @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeParcelable(ipAddress, flags);
         NetworkUtils.parcelInetAddress(dest, gateway, flags);
@@ -197,7 +240,9 @@
         dest.writeString(domains);
     }
 
-    protected static void readFromParcel(StaticIpConfiguration s, Parcel in) {
+    /** @hide */
+    public static StaticIpConfiguration readFromParcel(Parcel in) {
+        final StaticIpConfiguration s = new StaticIpConfiguration();
         s.ipAddress = in.readParcelable(null);
         s.gateway = NetworkUtils.unparcelInetAddress(in);
         s.dnsServers.clear();
@@ -206,5 +251,6 @@
             s.dnsServers.add(NetworkUtils.unparcelInetAddress(in));
         }
         s.domains = in.readString();
+        return s;
     }
 }
diff --git a/core/java/android/net/apf/ApfCapabilities.java b/core/java/android/net/apf/ApfCapabilities.java
index f28cdc9..73cf94b 100644
--- a/core/java/android/net/apf/ApfCapabilities.java
+++ b/core/java/android/net/apf/ApfCapabilities.java
@@ -16,11 +16,16 @@
 
 package android.net.apf;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
+
 /**
  * APF program support capabilities.
  *
  * @hide
  */
+@SystemApi
+@TestApi
 public class ApfCapabilities {
     /**
      * Version of APF instruction set supported for packet filtering. 0 indicates no support for
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index fda7279..14e2354 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -98,10 +98,10 @@
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.NetworkEvent;
 import android.net.netlink.InetDiagMessage;
+import android.net.shared.NetdService;
 import android.net.shared.NetworkMonitorUtils;
 import android.net.shared.PrivateDnsConfig;
 import android.net.util.MultinetworkPolicyTracker;
-import android.net.shared.NetdService;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Bundle;
@@ -238,6 +238,9 @@
     // connect anyway?" dialog after the user selects a network that doesn't validate.
     private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000;
 
+    // How long to dismiss network notification.
+    private static final int TIMEOUT_NOTIFICATION_DELAY_MS = 20 * 1000;
+
     // Default to 30s linger time-out. Modifiable only for testing.
     private static final String LINGER_DELAY_PROPERTY = "persist.netmon.linger";
     private static final int DEFAULT_LINGER_DELAY_MS = 30_000;
@@ -474,6 +477,11 @@
     public static final int EVENT_PROVISIONING_NOTIFICATION = 43;
 
     /**
+     * This event can handle dismissing notification by given network id.
+     */
+    public static final int EVENT_TIMEOUT_NOTIFICATION = 44;
+
+    /**
      * Argument for {@link #EVENT_PROVISIONING_NOTIFICATION} to indicate that the notification
      * should be shown.
      */
@@ -507,7 +515,8 @@
 
     // A helper object to track the current default HTTP proxy. ConnectivityService needs to tell
     // the world when it changes.
-    private final ProxyTracker mProxyTracker;
+    @VisibleForTesting
+    protected final ProxyTracker mProxyTracker;
 
     final private SettingsObserver mSettingsObserver;
 
@@ -816,7 +825,7 @@
         mPolicyManagerInternal = checkNotNull(
                 LocalServices.getService(NetworkPolicyManagerInternal.class),
                 "missing NetworkPolicyManagerInternal");
-        mProxyTracker = new ProxyTracker(context, mHandler, EVENT_PROXY_HAS_CHANGED);
+        mProxyTracker = makeProxyTracker();
 
         mNetd = NetdService.getInstance();
         mKeyStore = KeyStore.getInstance();
@@ -982,6 +991,11 @@
                 deps);
     }
 
+    @VisibleForTesting
+    protected ProxyTracker makeProxyTracker() {
+        return new ProxyTracker(mContext, mHandler, EVENT_PROXY_HAS_CHANGED);
+    }
+
     private static NetworkCapabilities createDefaultNetworkCapabilitiesForUid(int uid) {
         final NetworkCapabilities netCap = new NetworkCapabilities();
         netCap.addCapability(NET_CAPABILITY_INTERNET);
@@ -2477,6 +2491,11 @@
                     final boolean valid = (msg.arg1 == NETWORK_TEST_RESULT_VALID);
                     final boolean wasValidated = nai.lastValidated;
                     final boolean wasDefault = isDefaultNetwork(nai);
+                    if (nai.everCaptivePortalDetected && !nai.captivePortalLoginNotified
+                            && valid) {
+                        nai.captivePortalLoginNotified = true;
+                        showNetworkNotification(nai, NotificationType.LOGGED_IN);
+                    }
 
                     final String redirectUrl = (msg.obj instanceof String) ? (String) msg.obj : "";
 
@@ -2497,7 +2516,15 @@
                         updateCapabilities(oldScore, nai, nai.networkCapabilities);
                         // If score has changed, rebroadcast to NetworkFactories. b/17726566
                         if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai);
-                        if (valid) handleFreshlyValidatedNetwork(nai);
+                        if (valid) {
+                            handleFreshlyValidatedNetwork(nai);
+                            // Clear NO_INTERNET and LOST_INTERNET notifications if network becomes
+                            // valid.
+                            mNotifier.clearNotification(nai.network.netId,
+                                    NotificationType.NO_INTERNET);
+                            mNotifier.clearNotification(nai.network.netId,
+                                    NotificationType.LOST_INTERNET);
+                        }
                     }
                     updateInetCondition(nai);
                     // Let the NetworkAgent know the state of its network
@@ -2521,6 +2548,9 @@
                         final int oldScore = nai.getCurrentScore();
                         nai.lastCaptivePortalDetected = visible;
                         nai.everCaptivePortalDetected |= visible;
+                        if (visible) {
+                            nai.captivePortalLoginNotified = false;
+                        }
                         if (nai.lastCaptivePortalDetected &&
                             Settings.Global.CAPTIVE_PORTAL_MODE_AVOID == getCaptivePortalMode()) {
                             if (DBG) log("Avoiding captive portal network: " + nai.name());
@@ -2532,7 +2562,10 @@
                         updateCapabilities(oldScore, nai, nai.networkCapabilities);
                     }
                     if (!visible) {
-                        mNotifier.clearNotification(netId);
+                        // Only clear SIGN_IN and NETWORK_SWITCH notifications here, or else other
+                        // notifications belong to the same network may be cleared unexpected.
+                        mNotifier.clearNotification(netId, NotificationType.SIGN_IN);
+                        mNotifier.clearNotification(netId, NotificationType.NETWORK_SWITCH);
                     } else {
                         if (nai == null) {
                             loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor");
@@ -3238,9 +3271,15 @@
         pw.decreaseIndent();
     }
 
-    private void showValidationNotification(NetworkAgentInfo nai, NotificationType type) {
+    private void showNetworkNotification(NetworkAgentInfo nai, NotificationType type) {
         final String action;
         switch (type) {
+            case LOGGED_IN:
+                action = Settings.ACTION_WIFI_SETTINGS;
+                mHandler.removeMessages(EVENT_TIMEOUT_NOTIFICATION);
+                mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NOTIFICATION,
+                        nai.network.netId, 0), TIMEOUT_NOTIFICATION_DELAY_MS);
+                break;
             case NO_INTERNET:
                 action = ConnectivityManager.ACTION_PROMPT_UNVALIDATED;
                 break;
@@ -3253,10 +3292,12 @@
         }
 
         Intent intent = new Intent(action);
-        intent.setData(Uri.fromParts("netId", Integer.toString(nai.network.netId), null));
-        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.setClassName("com.android.settings",
-                "com.android.settings.wifi.WifiNoInternetDialog");
+        if (type != NotificationType.LOGGED_IN) {
+            intent.setData(Uri.fromParts("netId", Integer.toString(nai.network.netId), null));
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            intent.setClassName("com.android.settings",
+                    "com.android.settings.wifi.WifiNoInternetDialog");
+        }
 
         PendingIntent pendingIntent = PendingIntent.getActivityAsUser(
                 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT);
@@ -3274,7 +3315,7 @@
                 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) {
             return;
         }
-        showValidationNotification(nai, NotificationType.NO_INTERNET);
+        showNetworkNotification(nai, NotificationType.NO_INTERNET);
     }
 
     private void handleNetworkUnvalidated(NetworkAgentInfo nai) {
@@ -3283,7 +3324,7 @@
 
         if (nc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) &&
             mMultinetworkPolicyTracker.shouldNotifyWifiUnvalidated()) {
-            showValidationNotification(nai, NotificationType.LOST_INTERNET);
+            showNetworkNotification(nai, NotificationType.LOST_INTERNET);
         }
     }
 
@@ -3429,6 +3470,9 @@
                 case EVENT_DATA_SAVER_CHANGED:
                     handleRestrictBackgroundChanged(toBool(msg.arg1));
                     break;
+                case EVENT_TIMEOUT_NOTIFICATION:
+                    mNotifier.clearNotification(msg.arg1, NotificationType.LOGGED_IN);
+                    break;
             }
         }
     }
@@ -3686,20 +3730,46 @@
         }
     }
 
+    /**
+     * Returns information about the proxy a certain network is using. If given a null network, it
+     * it will return the proxy for the bound network for the caller app or the default proxy if
+     * none.
+     *
+     * @param network the network we want to get the proxy information for.
+     * @return Proxy information if a network has a proxy configured, or otherwise null.
+     */
     @Override
     public ProxyInfo getProxyForNetwork(Network network) {
-        if (network == null) return mProxyTracker.getDefaultProxy();
         final ProxyInfo globalProxy = mProxyTracker.getGlobalProxy();
         if (globalProxy != null) return globalProxy;
-        if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null;
-        // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which
-        // caller may not have.
+        if (network == null) {
+            // Get the network associated with the calling UID.
+            final Network activeNetwork = getActiveNetworkForUidInternal(Binder.getCallingUid(),
+                    true);
+            if (activeNetwork == null) {
+                return null;
+            }
+            return getLinkPropertiesProxyInfo(activeNetwork);
+        } else if (queryUserAccess(Binder.getCallingUid(), network.netId)) {
+            // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which
+            // caller may not have.
+            return getLinkPropertiesProxyInfo(network);
+        }
+        // No proxy info available if the calling UID does not have network access.
+        return null;
+    }
+
+    @VisibleForTesting
+    protected boolean queryUserAccess(int uid, int netId) {
+        return NetworkUtils.queryUserAccess(uid, netId);
+    }
+
+    private ProxyInfo getLinkPropertiesProxyInfo(Network network) {
         final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
         if (nai == null) return null;
         synchronized (nai) {
-            final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy();
-            if (proxyInfo == null) return null;
-            return new ProxyInfo(proxyInfo);
+            final ProxyInfo linkHttpProxy = nai.linkProperties.getHttpProxy();
+            return linkHttpProxy == null ? null : new ProxyInfo(linkHttpProxy);
         }
     }
 
@@ -3723,11 +3793,10 @@
         mProxyTracker.setDefaultProxy(proxy);
     }
 
-    // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy.
-    // This method gets called when any network changes proxy, but the broadcast only ever contains
-    // the default proxy (even if it hasn't changed).
-    // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network
-    // world where an app might be bound to a non-default network.
+    // If the proxy has changed from oldLp to newLp, resend proxy broadcast. This method gets called
+    // when any network changes proxy.
+    // TODO: Remove usage of broadcast extras as they are deprecated and not applicable in a
+    // multi-network world where an app might be bound to a non-default network.
     private void updateProxy(LinkProperties newLp, LinkProperties oldLp) {
         ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy();
         ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy();
@@ -5894,12 +5963,6 @@
             }
             scheduleUnvalidatedPrompt(networkAgent);
 
-            if (networkAgent.isVPN()) {
-                // Temporarily disable the default proxy (not global).
-                mProxyTracker.setDefaultProxyEnabled(false);
-                // TODO: support proxy per network.
-            }
-
             // Whether a particular NetworkRequest listen should cause signal strength thresholds to
             // be communicated to a particular NetworkAgent depends only on the network's immutable,
             // capabilities, so it only needs to be done once on initial connect, not every time the
@@ -5918,10 +5981,16 @@
         } else if (state == NetworkInfo.State.DISCONNECTED) {
             networkAgent.asyncChannel.disconnect();
             if (networkAgent.isVPN()) {
-                mProxyTracker.setDefaultProxyEnabled(true);
                 updateUids(networkAgent, networkAgent.networkCapabilities, null);
             }
             disconnectAndDestroyNetwork(networkAgent);
+            if (networkAgent.isVPN()) {
+                // As the active or bound network changes for apps, broadcast the default proxy, as
+                // apps may need to update their proxy data. This is called after disconnecting from
+                // VPN to make sure we do not broadcast the old proxy data.
+                // TODO(b/122649188): send the broadcast only to VPN users.
+                mProxyTracker.sendProxyBroadcast();
+            }
         } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) ||
                 state == NetworkInfo.State.SUSPENDED) {
             // going into or coming out of SUSPEND: re-score and notify
diff --git a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
index 9ea73fb..d0cff25 100644
--- a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
@@ -152,6 +152,10 @@
     // Whether a captive portal was found during the last network validation attempt.
     public boolean lastCaptivePortalDetected;
 
+    // Indicates the user was notified of a successful captive portal login since a portal was
+    // last detected.
+    public boolean captivePortalLoginNotified;
+
     // Networks are lingered when they become unneeded as a result of their NetworkRequests being
     // satisfied by a higher-scoring network. so as to allow communication to wrap up before the
     // network is taken down.  This usually only happens to the default network. Lingering ends with
@@ -618,18 +622,19 @@
     }
 
     public String toString() {
-        return "NetworkAgentInfo{ ni{" + networkInfo + "}  " +
-                "network{" + network + "}  nethandle{" + network.getNetworkHandle() + "}  " +
-                "lp{" + linkProperties + "}  " +
-                "nc{" + networkCapabilities + "}  Score{" + getCurrentScore() + "}  " +
-                "everValidated{" + everValidated + "}  lastValidated{" + lastValidated + "}  " +
-                "created{" + created + "} lingering{" + isLingering() + "} " +
-                "explicitlySelected{" + networkMisc.explicitlySelected + "} " +
-                "acceptUnvalidated{" + networkMisc.acceptUnvalidated + "} " +
-                "everCaptivePortalDetected{" + everCaptivePortalDetected + "} " +
-                "lastCaptivePortalDetected{" + lastCaptivePortalDetected + "} " +
-                "clat{" + clatd + "} " +
-                "}";
+        return "NetworkAgentInfo{ ni{" + networkInfo + "}  "
+                + "network{" + network + "}  nethandle{" + network.getNetworkHandle() + "}  "
+                + "lp{" + linkProperties + "}  "
+                + "nc{" + networkCapabilities + "}  Score{" + getCurrentScore() + "}  "
+                + "everValidated{" + everValidated + "}  lastValidated{" + lastValidated + "}  "
+                + "created{" + created + "} lingering{" + isLingering() + "} "
+                + "explicitlySelected{" + networkMisc.explicitlySelected + "} "
+                + "acceptUnvalidated{" + networkMisc.acceptUnvalidated + "} "
+                + "everCaptivePortalDetected{" + everCaptivePortalDetected + "} "
+                + "lastCaptivePortalDetected{" + lastCaptivePortalDetected + "} "
+                + "captivePortalLoginNotified{" + captivePortalLoginNotified + "} "
+                + "clat{" + clatd + "} "
+                + "}";
     }
 
     public String name() {
diff --git a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
index 36a2476..b50477b 100644
--- a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
+++ b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
@@ -16,13 +16,16 @@
 
 package com.android.server.connectivity;
 
+import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
+import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
+import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
-import android.net.NetworkCapabilities;
 import android.net.wifi.WifiInfo;
 import android.os.UserHandle;
 import android.telephony.TelephonyManager;
@@ -31,15 +34,12 @@
 import android.util.SparseArray;
 import android.util.SparseIntArray;
 import android.widget.Toast;
+
 import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
 import com.android.internal.notification.SystemNotificationChannels;
 
-import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
-import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
-import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
-
 public class NetworkNotificationManager {
 
 
@@ -47,7 +47,8 @@
         LOST_INTERNET(SystemMessage.NOTE_NETWORK_LOST_INTERNET),
         NETWORK_SWITCH(SystemMessage.NOTE_NETWORK_SWITCH),
         NO_INTERNET(SystemMessage.NOTE_NETWORK_NO_INTERNET),
-        SIGN_IN(SystemMessage.NOTE_NETWORK_SIGN_IN);
+        SIGN_IN(SystemMessage.NOTE_NETWORK_SIGN_IN),
+        LOGGED_IN(SystemMessage.NOTE_NETWORK_LOGGED_IN);
 
         public final int eventId;
 
@@ -192,6 +193,9 @@
                     details = r.getString(R.string.network_available_sign_in_detailed, name);
                     break;
             }
+        } else if (notifyType == NotificationType.LOGGED_IN) {
+            title = WifiInfo.removeDoubleQuotes(nai.networkCapabilities.getSSID());
+            details = r.getString(R.string.captive_portal_logged_in_detailed);
         } else if (notifyType == NotificationType.NETWORK_SWITCH) {
             String fromTransport = getTransportName(transportType);
             String toTransport = getTransportName(getFirstTransportType(switchToNai));
@@ -239,6 +243,18 @@
         }
     }
 
+    /**
+     * Clear the notification with the given id, only if it matches the given type.
+     */
+    public void clearNotification(int id, NotificationType notifyType) {
+        final int previousEventId = mNotificationTypeMap.get(id);
+        final NotificationType previousNotifyType = NotificationType.getFromId(previousEventId);
+        if (notifyType != previousNotifyType) {
+            return;
+        }
+        clearNotification(id);
+    }
+
     public void clearNotification(int id) {
         if (mNotificationTypeMap.indexOfKey(id) < 0) {
             return;
@@ -290,6 +306,10 @@
         return (t != null) ? t.name() : "UNKNOWN";
     }
 
+    /**
+     * A notification with a higher number will take priority over a notification with a lower
+     * number.
+     */
     private static int priority(NotificationType t) {
         if (t == null) {
             return 0;
@@ -302,6 +322,7 @@
             case NETWORK_SWITCH:
                 return 2;
             case LOST_INTERNET:
+            case LOGGED_IN:
                 return 1;
             default:
                 return 0;
diff --git a/services/core/java/com/android/server/connectivity/ProxyTracker.java b/services/core/java/com/android/server/connectivity/ProxyTracker.java
index fdddccd..a671287 100644
--- a/services/core/java/com/android/server/connectivity/ProxyTracker.java
+++ b/services/core/java/com/android/server/connectivity/ProxyTracker.java
@@ -309,22 +309,4 @@
             }
         }
     }
-
-    /**
-     * Enable or disable the default proxy.
-     *
-     * This sets the flag for enabling/disabling the default proxy and sends the broadcast
-     * if applicable.
-     * @param enabled whether the default proxy should be enabled.
-     */
-    public void setDefaultProxyEnabled(final boolean enabled) {
-        synchronized (mProxyLock) {
-            if (mDefaultProxyEnabled != enabled) {
-                mDefaultProxyEnabled = enabled;
-                if (mGlobalProxy == null && mDefaultProxy != null) {
-                    sendProxyBroadcast();
-                }
-            }
-        }
-    }
 }
diff --git a/tests/net/java/android/net/StaticIpConfigurationTest.java b/tests/net/java/android/net/StaticIpConfigurationTest.java
index 5bb5734..2b5ad37 100644
--- a/tests/net/java/android/net/StaticIpConfigurationTest.java
+++ b/tests/net/java/android/net/StaticIpConfigurationTest.java
@@ -26,13 +26,13 @@
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
 import java.net.InetAddress;
 import java.util.HashSet;
 import java.util.Objects;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class StaticIpConfigurationTest {
@@ -203,7 +203,7 @@
         try {
             s.writeToParcel(p, 0);
             p.setDataPosition(0);
-            s2 = StaticIpConfiguration.CREATOR.createFromParcel(p);
+            s2 = StaticIpConfiguration.readFromParcel(p);
         } finally {
             p.recycle();
         }
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index b5d5f61..923c7dd 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -123,6 +123,7 @@
 import android.net.NetworkSpecifier;
 import android.net.NetworkStack;
 import android.net.NetworkUtils;
+import android.net.ProxyInfo;
 import android.net.RouteInfo;
 import android.net.SocketKeepalive;
 import android.net.UidRange;
@@ -161,6 +162,7 @@
 import com.android.server.connectivity.IpConnectivityMetrics;
 import com.android.server.connectivity.MockableSystemProperties;
 import com.android.server.connectivity.Nat464Xlat;
+import com.android.server.connectivity.ProxyTracker;
 import com.android.server.connectivity.Tethering;
 import com.android.server.connectivity.Vpn;
 import com.android.server.net.NetworkPinner;
@@ -1007,6 +1009,11 @@
         }
 
         @Override
+        protected ProxyTracker makeProxyTracker() {
+            return mock(ProxyTracker.class);
+        }
+
+        @Override
         protected int reserveNetId() {
             while (true) {
                 final int netId = super.reserveNetId();
@@ -1028,6 +1035,11 @@
             }
         }
 
+        @Override
+        protected boolean queryUserAccess(int uid, int netId) {
+            return true;
+        }
+
         public Nat464Xlat getNat464Xlat(MockNetworkAgent mna) {
             return getNetworkAgentInfoForNetwork(mna.getNetwork()).clatd;
         }
@@ -5132,4 +5144,84 @@
         mCellNetworkAgent.sendLinkProperties(lp);
         verifyTcpBufferSizeChange(TEST_TCP_BUFFER_SIZES);
     }
+
+    @Test
+    public void testGetGlobalProxyForNetwork() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        final Network wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        when(mService.mProxyTracker.getGlobalProxy()).thenReturn(testProxyInfo);
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(wifiNetwork));
+    }
+
+    @Test
+    public void testGetProxyForActiveNetwork() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        mWiFiNetworkAgent.connect(true);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        final LinkProperties testLinkProperties = new LinkProperties();
+        testLinkProperties.setHttpProxy(testProxyInfo);
+
+        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+    }
+
+    @Test
+    public void testGetProxyForVPN() {
+        final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
+
+        // Set up a WiFi network with no proxy
+        mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+        mWiFiNetworkAgent.connect(true);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Set up a VPN network with a proxy
+        final int uid = Process.myUid();
+        final MockNetworkAgent vpnNetworkAgent = new MockNetworkAgent(TRANSPORT_VPN);
+        final ArraySet<UidRange> ranges = new ArraySet<>();
+        ranges.add(new UidRange(uid, uid));
+        mMockVpn.setUids(ranges);
+        LinkProperties testLinkProperties = new LinkProperties();
+        testLinkProperties.setHttpProxy(testProxyInfo);
+        vpnNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+
+        // Connect to VPN with proxy
+        mMockVpn.setNetworkAgent(vpnNetworkAgent);
+        vpnNetworkAgent.connect(true);
+        mMockVpn.connect();
+        waitForIdle();
+
+        // Test that the VPN network returns a proxy, and the WiFi does not.
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(vpnNetworkAgent.getNetwork()));
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+        assertNull(mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+
+        // Test that the VPN network returns no proxy when it is set to null.
+        testLinkProperties.setHttpProxy(null);
+        vpnNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(vpnNetworkAgent.getNetwork()));
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Set WiFi proxy and check that the vpn proxy is still null.
+        testLinkProperties.setHttpProxy(testProxyInfo);
+        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        waitForIdle();
+        assertNull(mService.getProxyForNetwork(null));
+
+        // Disconnect from VPN and check that the active network, which is now the WiFi, has the
+        // correct proxy setting.
+        vpnNetworkAgent.disconnect();
+        waitForIdle();
+        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
+    }
 }
diff --git a/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java b/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
index 125fe72..273b8fc 100644
--- a/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
+++ b/tests/net/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
@@ -17,6 +17,7 @@
 package com.android.server.connectivity;
 
 import static com.android.server.connectivity.NetworkNotificationManager.NotificationType.*;
+
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.eq;
@@ -34,26 +35,24 @@
 import android.content.res.Resources;
 import android.net.NetworkCapabilities;
 import android.net.NetworkInfo;
-import android.support.test.runner.AndroidJUnit4;
 import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
 import android.telephony.TelephonyManager;
 
 import com.android.server.connectivity.NetworkNotificationManager.NotificationType;
 
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-import org.junit.runner.RunWith;
-import org.junit.Before;
-import org.junit.Test;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Mock;
-import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
-
-
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class NetworkNotificationManagerTest {
@@ -194,4 +193,54 @@
         mManager.clearNotification(id);
         verify(mNotificationManager, times(1)).cancelAsUser(eq(tag), eq(SIGN_IN.eventId), any());
     }
+
+    @Test
+    public void testSameLevelNotifications() {
+        final int id = 101;
+        final String tag = NetworkNotificationManager.tagFor(id);
+
+        mManager.showNotification(id, LOGGED_IN, mWifiNai, mCellNai, null, false);
+        verify(mNotificationManager, times(1))
+                .notifyAsUser(eq(tag), eq(LOGGED_IN.eventId), any(), any());
+
+        mManager.showNotification(id, LOST_INTERNET, mWifiNai, mCellNai, null, false);
+        verify(mNotificationManager, times(1))
+                .notifyAsUser(eq(tag), eq(LOST_INTERNET.eventId), any(), any());
+    }
+
+    @Test
+    public void testClearNotificationByType() {
+        final int id = 101;
+        final String tag = NetworkNotificationManager.tagFor(id);
+
+        // clearNotification(int id, NotificationType notifyType) will check if given type is equal
+        // to previous type or not. If they are equal then clear the notification; if they are not
+        // equal then return.
+
+        mManager.showNotification(id, LOGGED_IN, mWifiNai, mCellNai, null, false);
+        verify(mNotificationManager, times(1))
+                .notifyAsUser(eq(tag), eq(LOGGED_IN.eventId), any(), any());
+
+        // Previous notification is LOGGED_IN and given type is LOGGED_IN too. The notification
+        // should be cleared.
+        mManager.clearNotification(id, LOGGED_IN);
+        verify(mNotificationManager, times(1))
+                .cancelAsUser(eq(tag), eq(LOGGED_IN.eventId), any());
+
+        mManager.showNotification(id, LOGGED_IN, mWifiNai, mCellNai, null, false);
+        verify(mNotificationManager, times(2))
+                .notifyAsUser(eq(tag), eq(LOGGED_IN.eventId), any(), any());
+
+        // LOST_INTERNET notification popup after LOGGED_IN notification.
+        mManager.showNotification(id, LOST_INTERNET, mWifiNai, mCellNai, null, false);
+        verify(mNotificationManager, times(1))
+                .notifyAsUser(eq(tag), eq(LOST_INTERNET.eventId), any(), any());
+
+        // Previous notification is LOST_INTERNET and given type is LOGGED_IN. The notification
+        // shouldn't be cleared.
+        mManager.clearNotification(id, LOGGED_IN);
+        // LOST_INTERNET shouldn't be cleared.
+        verify(mNotificationManager, never())
+                .cancelAsUser(eq(tag), eq(LOST_INTERNET.eventId), any());
+    }
 }