diff --git a/framework/aidl-export/android/net/QosFilterParcelable.aidl b/framework/aidl-export/android/net/QosFilterParcelable.aidl
new file mode 100644
index 0000000..312d635
--- /dev/null
+++ b/framework/aidl-export/android/net/QosFilterParcelable.aidl
@@ -0,0 +1,21 @@
+/*
+**
+** Copyright (C) 2020 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;
+
+parcelable QosFilterParcelable;
+
diff --git a/framework/aidl-export/android/net/QosSession.aidl b/framework/aidl-export/android/net/QosSession.aidl
new file mode 100644
index 0000000..c2cf366
--- /dev/null
+++ b/framework/aidl-export/android/net/QosSession.aidl
@@ -0,0 +1,21 @@
+/*
+**
+** Copyright (C) 2020 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;
+
+parcelable QosSession;
+
diff --git a/framework/aidl-export/android/net/QosSocketInfo.aidl b/framework/aidl-export/android/net/QosSocketInfo.aidl
new file mode 100644
index 0000000..476c090
--- /dev/null
+++ b/framework/aidl-export/android/net/QosSocketInfo.aidl
@@ -0,0 +1,21 @@
+/*
+**
+** Copyright (C) 2020 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;
+
+parcelable QosSocketInfo;
+
diff --git a/framework/api/current.txt b/framework/api/current.txt
index 31b8fc8..a8f1a4d 100644
--- a/framework/api/current.txt
+++ b/framework/api/current.txt
@@ -401,16 +401,6 @@
     method public android.net.NetworkRequest.Builder setNetworkSpecifier(android.net.NetworkSpecifier);
   }
 
-  public final class Proxy {
-    ctor public Proxy();
-    method @Deprecated public static String getDefaultHost();
-    method @Deprecated public static int getDefaultPort();
-    method @Deprecated public static String getHost(android.content.Context);
-    method @Deprecated public static int getPort(android.content.Context);
-    field @Deprecated public static final String EXTRA_PROXY_INFO = "android.intent.extra.PROXY_INFO";
-    field public static final String PROXY_CHANGE_ACTION = "android.intent.action.PROXY_CHANGE";
-  }
-
   public class ProxyInfo implements android.os.Parcelable {
     ctor public ProxyInfo(@Nullable android.net.ProxyInfo);
     method public static android.net.ProxyInfo buildDirectProxy(String, int);
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index 3af855e..d2ed73e 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -6,6 +6,7 @@
   }
 
   public class ConnectivityManager {
+    method @NonNull @RequiresPermission(anyOf={android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, android.Manifest.permission.NETWORK_STACK, android.Manifest.permission.NETWORK_SETTINGS}) public java.util.List<android.net.NetworkStateSnapshot> getAllNetworkStateSnapshot();
     method @RequiresPermission(anyOf={android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, android.Manifest.permission.NETWORK_SETTINGS}) public void registerSystemDefaultNetworkCallback(@NonNull android.net.ConnectivityManager.NetworkCallback, @NonNull android.os.Handler);
     method @RequiresPermission(anyOf={android.Manifest.permission.NETWORK_SETTINGS, android.Manifest.permission.NETWORK_STACK, android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK}) public void requestBackgroundNetwork(@NonNull android.net.NetworkRequest, @Nullable android.os.Handler, @NonNull android.net.ConnectivityManager.NetworkCallback);
     method @RequiresPermission(anyOf={android.Manifest.permission.MANAGE_TEST_NETWORKS, android.Manifest.permission.NETWORK_STACK}) public void simulateDataStall(int, long, @NonNull android.net.Network, @NonNull android.os.PersistableBundle);
@@ -23,10 +24,6 @@
     field public static final int TRANSPORT_TEST = 7; // 0x7
   }
 
-  public final class Proxy {
-    method public static void setHttpProxyConfiguration(@Nullable android.net.ProxyInfo);
-  }
-
   public final class TcpRepairWindow {
     ctor public TcpRepairWindow(int, int, int, int, int, int);
     field public final int maxWindow;
diff --git a/framework/api/system-current.txt b/framework/api/system-current.txt
index 41ebc57..f5972fa 100644
--- a/framework/api/system-current.txt
+++ b/framework/api/system-current.txt
@@ -2,7 +2,7 @@
 package android.net {
 
   public class CaptivePortal implements android.os.Parcelable {
-    method public void logEvent(int, @NonNull String);
+    method @Deprecated public void logEvent(int, @NonNull String);
     method @RequiresPermission(android.Manifest.permission.NETWORK_STACK) public void reevaluateNetwork();
     method public void useNetwork();
     field public static final int APP_REQUEST_REEVALUATION_REQUIRED = 100; // 0x64
@@ -308,6 +308,9 @@
     field public static final int ID_NONE = -1; // 0xffffffff
   }
 
+  public class NetworkReleasedException extends java.lang.Exception {
+  }
+
   public class NetworkRequest implements android.os.Parcelable {
     method @Nullable public String getRequestorPackageName();
     method public int getRequestorUid();
@@ -317,6 +320,47 @@
     method @NonNull @RequiresPermission(android.Manifest.permission.NETWORK_SIGNAL_STRENGTH_WAKEUP) public android.net.NetworkRequest.Builder setSignalStrength(int);
   }
 
+  public abstract class QosCallback {
+    ctor public QosCallback();
+    method public void onError(@NonNull android.net.QosCallbackException);
+    method public void onQosSessionAvailable(@NonNull android.net.QosSession, @NonNull android.net.QosSessionAttributes);
+    method public void onQosSessionLost(@NonNull android.net.QosSession);
+  }
+
+  public static class QosCallback.QosCallbackRegistrationException extends java.lang.RuntimeException {
+  }
+
+  public final class QosCallbackException extends java.lang.Exception {
+  }
+
+  public abstract class QosFilter {
+    method @NonNull public abstract android.net.Network getNetwork();
+    method public abstract boolean matchesLocalAddress(@NonNull java.net.InetAddress, int, int);
+  }
+
+  public final class QosSession implements android.os.Parcelable {
+    ctor public QosSession(int, int);
+    method public int describeContents();
+    method public int getSessionId();
+    method public int getSessionType();
+    method public long getUniqueId();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.QosSession> CREATOR;
+    field public static final int TYPE_EPS_BEARER = 1; // 0x1
+  }
+
+  public interface QosSessionAttributes {
+  }
+
+  public final class QosSocketInfo implements android.os.Parcelable {
+    ctor public QosSocketInfo(@NonNull android.net.Network, @NonNull java.net.Socket) throws java.io.IOException;
+    method public int describeContents();
+    method @NonNull public java.net.InetSocketAddress getLocalSocketAddress();
+    method @NonNull public android.net.Network getNetwork();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.QosSocketInfo> CREATOR;
+  }
+
   public final class RouteInfo implements android.os.Parcelable {
     ctor public RouteInfo(@Nullable android.net.IpPrefix, @Nullable java.net.InetAddress, @Nullable String, int);
     ctor public RouteInfo(@Nullable android.net.IpPrefix, @Nullable java.net.InetAddress, @Nullable String, int, int);
@@ -331,6 +375,12 @@
     field public static final int SUCCESS = 0; // 0x0
   }
 
+  public class SocketLocalAddressChangedException extends java.lang.Exception {
+  }
+
+  public class SocketNotBoundException extends java.lang.Exception {
+  }
+
   public final class StaticIpConfiguration implements android.os.Parcelable {
     ctor public StaticIpConfiguration();
     ctor public StaticIpConfiguration(@Nullable android.net.StaticIpConfiguration);
@@ -392,16 +442,3 @@
 
 }
 
-package android.net.util {
-
-  public final class SocketUtils {
-    method public static void bindSocketToInterface(@NonNull java.io.FileDescriptor, @NonNull String) throws android.system.ErrnoException;
-    method public static void closeSocket(@Nullable java.io.FileDescriptor) throws java.io.IOException;
-    method @NonNull public static java.net.SocketAddress makeNetlinkSocketAddress(int, int);
-    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int);
-    method @Deprecated @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, @NonNull byte[]);
-    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int, @NonNull byte[]);
-  }
-
-}
-
diff --git a/framework/src/android/net/CaptivePortal.java b/framework/src/android/net/CaptivePortal.java
index 269bbf2..4a7b601 100644
--- a/framework/src/android/net/CaptivePortal.java
+++ b/framework/src/android/net/CaptivePortal.java
@@ -160,12 +160,11 @@
      * @param eventId one of the CAPTIVE_PORTAL_LOGIN_* constants in metrics_constants.proto.
      * @param packageName captive portal application package name.
      * @hide
+     * @deprecated The event will not be logged in Android S and above. The
+     * caller is migrating to statsd.
      */
+    @Deprecated
     @SystemApi
     public void logEvent(int eventId, @NonNull String packageName) {
-        try {
-            ICaptivePortal.Stub.asInterface(mBinder).logEvent(eventId, packageName);
-        } catch (RemoteException e) {
-        }
     }
 }
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index e7ab0a1..d7c6854 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -1259,6 +1259,25 @@
     }
 
     /**
+     * Return a list of {@link NetworkStateSnapshot}s, one for each network that is currently
+     * connected.
+     * @hide
+     */
+    @SystemApi(client = MODULE_LIBRARIES)
+    @RequiresPermission(anyOf = {
+            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
+            android.Manifest.permission.NETWORK_STACK,
+            android.Manifest.permission.NETWORK_SETTINGS})
+    @NonNull
+    public List<NetworkStateSnapshot> getAllNetworkStateSnapshot() {
+        try {
+            return mService.getAllNetworkStateSnapshot();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
      * Returns the {@link Network} object currently serving a given type, or
      * null if the given type is not connected.
      *
@@ -2245,31 +2264,6 @@
         }
     }
 
-    /* TODO: These permissions checks don't belong in client-side code. Move them to
-     * services.jar, possibly in com.android.server.net. */
-
-    /** {@hide} */
-    public static final void enforceChangePermission(Context context,
-            String callingPkg, String callingAttributionTag) {
-        int uid = Binder.getCallingUid();
-        checkAndNoteChangeNetworkStateOperation(context, uid, callingPkg,
-                callingAttributionTag, true /* throwException */);
-    }
-
-    /**
-     * Check if the package is a allowed to change the network state. This also accounts that such
-     * an access happened.
-     *
-     * @return {@code true} iff the package is allowed to change the network state.
-     */
-    // TODO: Remove method and replace with direct call once R code is pushed to AOSP
-    private static boolean checkAndNoteChangeNetworkStateOperation(@NonNull Context context,
-            int uid, @NonNull String callingPackage, @Nullable String callingAttributionTag,
-            boolean throwException) {
-        return Settings.checkAndNoteChangeNetworkStateOperation(context, uid, callingPackage,
-                callingAttributionTag, throwException);
-    }
-
     /**
      * Check if the package is a allowed to write settings. This also accounts that such an access
      * happened.
diff --git a/framework/src/android/net/ICaptivePortal.aidl b/framework/src/android/net/ICaptivePortal.aidl
index fe21905..e35f8d4 100644
--- a/framework/src/android/net/ICaptivePortal.aidl
+++ b/framework/src/android/net/ICaptivePortal.aidl
@@ -23,5 +23,4 @@
 oneway interface ICaptivePortal {
     void appRequest(int request);
     void appResponse(int response);
-    void logEvent(int eventId, String packageName);
 }
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index 160338d..cd49258 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -31,6 +31,7 @@
 import android.net.NetworkInfo;
 import android.net.NetworkRequest;
 import android.net.NetworkState;
+import android.net.NetworkStateSnapshot;
 import android.net.OemNetworkPreferences;
 import android.net.ProxyInfo;
 import android.net.UidRange;
@@ -79,6 +80,8 @@
     @UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
     NetworkState[] getAllNetworkState();
 
+    List<NetworkStateSnapshot> getAllNetworkStateSnapshot();
+
     boolean isActiveNetworkMetered();
 
     boolean requestRouteToHostAddress(int networkType, in byte[] hostAddress,
diff --git a/framework/src/android/net/IOnSetOemNetworkPreferenceListener.aidl b/framework/src/android/net/IOnSetOemNetworkPreferenceListener.aidl
new file mode 100644
index 0000000..7979afc
--- /dev/null
+++ b/framework/src/android/net/IOnSetOemNetworkPreferenceListener.aidl
@@ -0,0 +1,23 @@
+/**
+ *
+ * Copyright (C) 2021 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;
+
+/** @hide */
+oneway interface IOnSetOemNetworkPreferenceListener {
+    void onComplete();
+}
diff --git a/framework/src/android/net/IQosCallback.aidl b/framework/src/android/net/IQosCallback.aidl
new file mode 100644
index 0000000..91c7575
--- /dev/null
+++ b/framework/src/android/net/IQosCallback.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2020 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.Bundle;
+import android.net.QosSession;
+import android.telephony.data.EpsBearerQosSessionAttributes;
+
+/**
+ * AIDL interface for QosCallback
+ *
+ * @hide
+ */
+oneway interface IQosCallback
+{
+     void onQosEpsBearerSessionAvailable(in QosSession session,
+        in EpsBearerQosSessionAttributes attributes);
+     void onQosSessionLost(in QosSession session);
+     void onError(in int type);
+}
diff --git a/framework/src/android/net/NetworkReleasedException.java b/framework/src/android/net/NetworkReleasedException.java
new file mode 100644
index 0000000..0629b75
--- /dev/null
+++ b/framework/src/android/net/NetworkReleasedException.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2021 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.annotation.SystemApi;
+
+/**
+ * Indicates that the {@link Network} was released and is no longer available.
+ *
+ * @hide
+ */
+@SystemApi
+public class NetworkReleasedException extends Exception {
+    /** @hide */
+    public NetworkReleasedException() {
+        super("The network was released and is no longer available");
+    }
+}
diff --git a/framework/src/android/net/NetworkState.java b/framework/src/android/net/NetworkState.java
new file mode 100644
index 0000000..d010265
--- /dev/null
+++ b/framework/src/android/net/NetworkState.java
@@ -0,0 +1,130 @@
+/*
+ * 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.annotation.NonNull;
+import android.annotation.Nullable;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.os.Build;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Slog;
+
+/**
+ * Snapshot of network state.
+ *
+ * @hide
+ */
+public class NetworkState implements Parcelable {
+    private static final boolean VALIDATE_ROAMING_STATE = false;
+
+    // TODO: remove and make members @NonNull.
+    public static final NetworkState EMPTY = new NetworkState();
+
+    public final NetworkInfo networkInfo;
+    public final LinkProperties linkProperties;
+    public final NetworkCapabilities networkCapabilities;
+    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
+    public final Network network;
+    public final String subscriberId;
+    public final int legacyNetworkType;
+
+    private NetworkState() {
+        networkInfo = null;
+        linkProperties = null;
+        networkCapabilities = null;
+        network = null;
+        subscriberId = null;
+        legacyNetworkType = 0;
+    }
+
+    public NetworkState(int legacyNetworkType, @NonNull LinkProperties linkProperties,
+            @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+            @Nullable String subscriberId) {
+        this(legacyNetworkType, new NetworkInfo(legacyNetworkType, 0, null, null), linkProperties,
+                networkCapabilities, network, subscriberId);
+    }
+
+    // Constructor that used internally in ConnectivityService mainline module.
+    public NetworkState(@NonNull NetworkInfo networkInfo, @NonNull LinkProperties linkProperties,
+            @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+            @Nullable String subscriberId) {
+        this(networkInfo.getType(), networkInfo, linkProperties,
+                networkCapabilities, network, subscriberId);
+    }
+
+    public NetworkState(int legacyNetworkType, @NonNull NetworkInfo networkInfo,
+            @NonNull LinkProperties linkProperties,
+            @NonNull NetworkCapabilities networkCapabilities, @NonNull Network network,
+            @Nullable String subscriberId) {
+        this.networkInfo = networkInfo;
+        this.linkProperties = linkProperties;
+        this.networkCapabilities = networkCapabilities;
+        this.network = network;
+        this.subscriberId = subscriberId;
+        this.legacyNetworkType = legacyNetworkType;
+
+        // This object is an atomic view of a network, so the various components
+        // should always agree on roaming state.
+        if (VALIDATE_ROAMING_STATE && networkInfo != null && networkCapabilities != null) {
+            if (networkInfo.isRoaming() == networkCapabilities
+                    .hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING)) {
+                Slog.wtf("NetworkState", "Roaming state disagreement between " + networkInfo
+                        + " and " + networkCapabilities);
+            }
+        }
+    }
+
+    @UnsupportedAppUsage
+    public NetworkState(Parcel in) {
+        networkInfo = in.readParcelable(null);
+        linkProperties = in.readParcelable(null);
+        networkCapabilities = in.readParcelable(null);
+        network = in.readParcelable(null);
+        subscriberId = in.readString();
+        legacyNetworkType = in.readInt();
+    }
+
+    @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.writeParcelable(network, flags);
+        out.writeString(subscriberId);
+        out.writeInt(legacyNetworkType);
+    }
+
+    @UnsupportedAppUsage
+    @NonNull
+    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/framework/src/android/net/NetworkUtils.java b/framework/src/android/net/NetworkUtils.java
index b5e8a61..9e42bbe 100644
--- a/framework/src/android/net/NetworkUtils.java
+++ b/framework/src/android/net/NetworkUtils.java
@@ -87,22 +87,6 @@
     public static native int bindSocketToNetwork(FileDescriptor fd, int netId);
 
     /**
-     * Protect {@code fd} from VPN connections.  After protecting, data sent through
-     * this socket will go directly to the underlying network, so its traffic will not be
-     * forwarded through the VPN.
-     */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553,
-            publicAlternatives = "Use {@link android.net.VpnService#protect} instead.")
-    public static native boolean protectFromVpn(FileDescriptor fd);
-
-    /**
-     * Protect {@code socketfd} from VPN connections.  After protecting, data sent through
-     * this socket will go directly to the underlying network, so its traffic will not be
-     * forwarded through the VPN.
-     */
-    public native static boolean protectFromVpn(int socketfd);
-
-    /**
      * Determine if {@code uid} can access network designated by {@code netId}.
      * @return {@code true} if {@code uid} can access network, {@code false} otherwise.
      */
diff --git a/framework/src/android/net/PacProxySelector.java b/framework/src/android/net/PacProxySelector.java
deleted file mode 100644
index 326943a..0000000
--- a/framework/src/android/net/PacProxySelector.java
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * 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 android.os.ServiceManager;
-import android.util.Log;
-
-import com.android.net.IProxyService;
-
-import com.google.android.collect.Lists;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.MalformedURLException;
-import java.net.Proxy;
-import java.net.Proxy.Type;
-import java.net.ProxySelector;
-import java.net.SocketAddress;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.util.List;
-
-/**
- * @hide
- */
-public class PacProxySelector extends ProxySelector {
-    private static final String TAG = "PacProxySelector";
-    public static final String PROXY_SERVICE = "com.android.net.IProxyService";
-    private static final String SOCKS = "SOCKS ";
-    private static final String PROXY = "PROXY ";
-
-    private IProxyService mProxyService;
-    private final List<Proxy> mDefaultList;
-
-    public PacProxySelector() {
-        mProxyService = IProxyService.Stub.asInterface(
-                ServiceManager.getService(PROXY_SERVICE));
-        if (mProxyService == null) {
-            // Added because of b10267814 where mako is restarting.
-            Log.e(TAG, "PacProxyInstaller: no proxy service");
-        }
-        mDefaultList = Lists.newArrayList(java.net.Proxy.NO_PROXY);
-    }
-
-    @Override
-    public List<Proxy> select(URI uri) {
-        if (mProxyService == null) {
-            mProxyService = IProxyService.Stub.asInterface(
-                    ServiceManager.getService(PROXY_SERVICE));
-        }
-        if (mProxyService == null) {
-            Log.e(TAG, "select: no proxy service return NO_PROXY");
-            return Lists.newArrayList(java.net.Proxy.NO_PROXY);
-        }
-        String response = null;
-        String urlString;
-        try {
-            // Strip path and username/password from URI so it's not visible to PAC script. The
-            // path often contains credentials the app does not want exposed to a potentially
-            // malicious PAC script.
-            if (!"http".equalsIgnoreCase(uri.getScheme())) {
-                uri = new URI(uri.getScheme(), null, uri.getHost(), uri.getPort(), "/", null, null);
-            }
-            urlString = uri.toURL().toString();
-        } catch (URISyntaxException e) {
-            urlString = uri.getHost();
-        } catch (MalformedURLException e) {
-            urlString = uri.getHost();
-        }
-        try {
-            response = mProxyService.resolvePacFile(uri.getHost(), urlString);
-        } catch (Exception e) {
-            Log.e(TAG, "Error resolving PAC File", e);
-        }
-        if (response == null) {
-            return mDefaultList;
-        }
-
-        return parseResponse(response);
-    }
-
-    private static List<Proxy> parseResponse(String response) {
-        String[] split = response.split(";");
-        List<Proxy> ret = Lists.newArrayList();
-        for (String s : split) {
-            String trimmed = s.trim();
-            if (trimmed.equals("DIRECT")) {
-                ret.add(java.net.Proxy.NO_PROXY);
-            } else if (trimmed.startsWith(PROXY)) {
-                Proxy proxy = proxyFromHostPort(Type.HTTP, trimmed.substring(PROXY.length()));
-                if (proxy != null) {
-                    ret.add(proxy);
-                }
-            } else if (trimmed.startsWith(SOCKS)) {
-                Proxy proxy = proxyFromHostPort(Type.SOCKS, trimmed.substring(SOCKS.length()));
-                if (proxy != null) {
-                    ret.add(proxy);
-                }
-            }
-        }
-        if (ret.size() == 0) {
-            ret.add(java.net.Proxy.NO_PROXY);
-        }
-        return ret;
-    }
-
-    private static Proxy proxyFromHostPort(Proxy.Type type, String hostPortString) {
-        try {
-            String[] hostPort = hostPortString.split(":");
-            String host = hostPort[0];
-            int port = Integer.parseInt(hostPort[1]);
-            return new Proxy(type, InetSocketAddress.createUnresolved(host, port));
-        } catch (NumberFormatException|ArrayIndexOutOfBoundsException e) {
-            Log.d(TAG, "Unable to parse proxy " + hostPortString + " " + e);
-            return null;
-        }
-    }
-
-    @Override
-    public void connectFailed(URI uri, SocketAddress address, IOException failure) {
-
-    }
-
-}
diff --git a/framework/src/android/net/Proxy.java b/framework/src/android/net/Proxy.java
deleted file mode 100644
index 77c8a4f..0000000
--- a/framework/src/android/net/Proxy.java
+++ /dev/null
@@ -1,248 +0,0 @@
-/*
- * Copyright (C) 2007 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.annotation.Nullable;
-import android.annotation.SdkConstant;
-import android.annotation.SdkConstant.SdkConstantType;
-import android.annotation.SystemApi;
-import android.compat.annotation.UnsupportedAppUsage;
-import android.content.Context;
-import android.os.Build;
-import android.text.TextUtils;
-import android.util.Log;
-
-import com.android.net.module.util.ProxyUtils;
-
-import java.net.InetSocketAddress;
-import java.net.ProxySelector;
-import java.net.URI;
-import java.util.List;
-
-/**
- * A convenience class for accessing the user and default proxy
- * settings.
- */
-public final class Proxy {
-
-    private static final String TAG = "Proxy";
-
-    private static final ProxySelector sDefaultProxySelector;
-
-    /**
-     * Used to notify an app that's caching the proxy that either the default
-     * connection has changed or any connection's proxy has changed. The new
-     * proxy should be queried using {@link ConnectivityManager#getDefaultProxy()}.
-     *
-     * <p class="note">This is a protected intent that can only be sent by the system
-     */
-    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
-    public static final String PROXY_CHANGE_ACTION = "android.intent.action.PROXY_CHANGE";
-    /**
-     * Intent extra included with {@link #PROXY_CHANGE_ACTION} intents.
-     * It describes the new proxy being used (as a {@link ProxyInfo} object).
-     * @deprecated Because {@code PROXY_CHANGE_ACTION} is sent whenever the proxy
-     * for any network on the system changes, applications should always use
-     * {@link ConnectivityManager#getDefaultProxy()} or
-     * {@link ConnectivityManager#getLinkProperties(Network)}.{@link LinkProperties#getHttpProxy()}
-     * to get the proxy for the Network(s) they are using.
-     */
-    @Deprecated
-    public static final String EXTRA_PROXY_INFO = "android.intent.extra.PROXY_INFO";
-
-    private static ConnectivityManager sConnectivityManager = null;
-
-    static {
-        sDefaultProxySelector = ProxySelector.getDefault();
-    }
-
-    /**
-     * Return the proxy object to be used for the URL given as parameter.
-     * @param ctx A Context used to get the settings for the proxy host.
-     * @param url A URL to be accessed. Used to evaluate exclusion list.
-     * @return Proxy (java.net) object containing the host name. If the
-     *         user did not set a hostname it returns the default host.
-     *         A null value means that no host is to be used.
-     * {@hide}
-     */
-    @UnsupportedAppUsage
-    public static final java.net.Proxy getProxy(Context ctx, String url) {
-        String host = "";
-        if ((url != null) && !isLocalHost(host)) {
-            URI uri = URI.create(url);
-            ProxySelector proxySelector = ProxySelector.getDefault();
-
-            List<java.net.Proxy> proxyList = proxySelector.select(uri);
-
-            if (proxyList.size() > 0) {
-                return proxyList.get(0);
-            }
-        }
-        return java.net.Proxy.NO_PROXY;
-    }
-
-
-    /**
-     * Return the proxy host set by the user.
-     * @param ctx A Context used to get the settings for the proxy host.
-     * @return String containing the host name. If the user did not set a host
-     *         name it returns the default host. A null value means that no
-     *         host is to be used.
-     * @deprecated Use standard java vm proxy values to find the host, port
-     *         and exclusion list.  This call ignores the exclusion list.
-     */
-    @Deprecated
-    public static final String getHost(Context ctx) {
-        java.net.Proxy proxy = getProxy(ctx, null);
-        if (proxy == java.net.Proxy.NO_PROXY) return null;
-        try {
-            return ((InetSocketAddress)(proxy.address())).getHostName();
-        } catch (Exception e) {
-            return null;
-        }
-    }
-
-    /**
-     * Return the proxy port set by the user.
-     * @param ctx A Context used to get the settings for the proxy port.
-     * @return The port number to use or -1 if no proxy is to be used.
-     * @deprecated Use standard java vm proxy values to find the host, port
-     *         and exclusion list.  This call ignores the exclusion list.
-     */
-    @Deprecated
-    public static final int getPort(Context ctx) {
-        java.net.Proxy proxy = getProxy(ctx, null);
-        if (proxy == java.net.Proxy.NO_PROXY) return -1;
-        try {
-            return ((InetSocketAddress)(proxy.address())).getPort();
-        } catch (Exception e) {
-            return -1;
-        }
-    }
-
-    /**
-     * Return the default proxy host specified by the carrier.
-     * @return String containing the host name or null if there is no proxy for
-     * this carrier.
-     * @deprecated Use standard java vm proxy values to find the host, port and
-     *         exclusion list.  This call ignores the exclusion list and no
-     *         longer reports only mobile-data apn-based proxy values.
-     */
-    @Deprecated
-    public static final String getDefaultHost() {
-        String host = System.getProperty("http.proxyHost");
-        if (TextUtils.isEmpty(host)) return null;
-        return host;
-    }
-
-    /**
-     * Return the default proxy port specified by the carrier.
-     * @return The port number to be used with the proxy host or -1 if there is
-     * no proxy for this carrier.
-     * @deprecated Use standard java vm proxy values to find the host, port and
-     *         exclusion list.  This call ignores the exclusion list and no
-     *         longer reports only mobile-data apn-based proxy values.
-     */
-    @Deprecated
-    public static final int getDefaultPort() {
-        if (getDefaultHost() == null) return -1;
-        try {
-            return Integer.parseInt(System.getProperty("http.proxyPort"));
-        } catch (NumberFormatException e) {
-            return -1;
-        }
-    }
-
-    private static final boolean isLocalHost(String host) {
-        if (host == null) {
-            return false;
-        }
-        try {
-            if (host != null) {
-                if (host.equalsIgnoreCase("localhost")) {
-                    return true;
-                }
-                if (InetAddresses.parseNumericAddress(host).isLoopbackAddress()) {
-                    return true;
-                }
-            }
-        } catch (IllegalArgumentException iex) {
-        }
-        return false;
-    }
-
-    /** @hide */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
-    @Deprecated
-    public static void setHttpProxySystemProperty(ProxyInfo p) {
-        setHttpProxyConfiguration(p);
-    }
-
-    /**
-     * Set HTTP proxy configuration for the process to match the provided ProxyInfo.
-     *
-     * If the provided ProxyInfo is null, the proxy configuration will be cleared.
-     * @hide
-     */
-    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
-    public static void setHttpProxyConfiguration(@Nullable ProxyInfo p) {
-        String host = null;
-        String port = null;
-        String exclList = null;
-        Uri pacFileUrl = Uri.EMPTY;
-        if (p != null) {
-            host = p.getHost();
-            port = Integer.toString(p.getPort());
-            exclList = ProxyUtils.exclusionListAsString(p.getExclusionList());
-            pacFileUrl = p.getPacFileUrl();
-        }
-        setHttpProxyConfiguration(host, port, exclList, pacFileUrl);
-    }
-
-    /** @hide */
-    public static void setHttpProxyConfiguration(String host, String port, String exclList,
-            Uri pacFileUrl) {
-        if (exclList != null) exclList = exclList.replace(",", "|");
-        if (false) Log.d(TAG, "setHttpProxySystemProperty :"+host+":"+port+" - "+exclList);
-        if (host != null) {
-            System.setProperty("http.proxyHost", host);
-            System.setProperty("https.proxyHost", host);
-        } else {
-            System.clearProperty("http.proxyHost");
-            System.clearProperty("https.proxyHost");
-        }
-        if (port != null) {
-            System.setProperty("http.proxyPort", port);
-            System.setProperty("https.proxyPort", port);
-        } else {
-            System.clearProperty("http.proxyPort");
-            System.clearProperty("https.proxyPort");
-        }
-        if (exclList != null) {
-            System.setProperty("http.nonProxyHosts", exclList);
-            System.setProperty("https.nonProxyHosts", exclList);
-        } else {
-            System.clearProperty("http.nonProxyHosts");
-            System.clearProperty("https.nonProxyHosts");
-        }
-        if (!Uri.EMPTY.equals(pacFileUrl)) {
-            ProxySelector.setDefault(new PacProxySelector());
-        } else {
-            ProxySelector.setDefault(sDefaultProxySelector);
-        }
-    }
-}
diff --git a/framework/src/android/net/QosCallback.java b/framework/src/android/net/QosCallback.java
new file mode 100644
index 0000000..22f06bc
--- /dev/null
+++ b/framework/src/android/net/QosCallback.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2020 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.annotation.NonNull;
+import android.annotation.SystemApi;
+
+import java.util.concurrent.Executor;
+
+/**
+ * Receives Qos information given a {@link Network}.  The callback is registered with
+ * {@link ConnectivityManager#registerQosCallback}.
+ *
+ * <p>
+ * <br/>
+ * The callback will no longer receive calls if any of the following takes place:
+ * <ol>
+ * <li>{@link ConnectivityManager#unregisterQosCallback(QosCallback)} is called with the same
+ * callback instance.</li>
+ * <li>{@link QosCallback#onError(QosCallbackException)} is called.</li>
+ * <li>A network specific issue occurs.  eg. Congestion on a carrier network.</li>
+ * <li>The network registered with the callback has no associated QoS providers</li>
+ * </ul>
+ * {@hide}
+ */
+@SystemApi
+public abstract class QosCallback {
+    /**
+     * Invoked after an error occurs on a registered callback.  Once called, the callback is
+     * automatically unregistered and the callback will no longer receive calls.
+     *
+     * <p>The underlying exception can either be a runtime exception or a custom exception made for
+     * {@link QosCallback}. see: {@link QosCallbackException}.
+     *
+     * @param exception wraps the underlying cause
+     */
+    public void onError(@NonNull final QosCallbackException exception) {
+    }
+
+    /**
+     * Called when a Qos Session first becomes available to the callback or if its attributes have
+     * changed.
+     * <p>
+     * Note: The callback may be called multiple times with the same attributes.
+     *
+     * @param session the available session
+     * @param sessionAttributes the attributes of the session
+     */
+    public void onQosSessionAvailable(@NonNull final QosSession session,
+            @NonNull final QosSessionAttributes sessionAttributes) {
+    }
+
+    /**
+     * Called after a Qos Session is lost.
+     * <p>
+     * At least one call to
+     * {@link QosCallback#onQosSessionAvailable(QosSession, QosSessionAttributes)}
+     * with the same {@link QosSession} will precede a call to lost.
+     *
+     * @param session the lost session
+     */
+    public void onQosSessionLost(@NonNull final QosSession session) {
+    }
+
+    /**
+     * Thrown when there is a problem registering {@link QosCallback} with
+     * {@link ConnectivityManager#registerQosCallback(QosSocketInfo, QosCallback, Executor)}.
+     */
+    public static class QosCallbackRegistrationException extends RuntimeException {
+        /**
+         * @hide
+         */
+        public QosCallbackRegistrationException() {
+            super();
+        }
+    }
+}
diff --git a/framework/src/android/net/QosCallbackConnection.java b/framework/src/android/net/QosCallbackConnection.java
new file mode 100644
index 0000000..bdb4ad6
--- /dev/null
+++ b/framework/src/android/net/QosCallbackConnection.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2020 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.annotation.NonNull;
+import android.annotation.Nullable;
+import android.telephony.data.EpsBearerQosSessionAttributes;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.util.Objects;
+import java.util.concurrent.Executor;
+
+/**
+ * Sends messages from {@link com.android.server.ConnectivityService} to the registered
+ * {@link QosCallback}.
+ * <p/>
+ * This is a satellite class of {@link ConnectivityManager} and not meant
+ * to be used in other contexts.
+ *
+ * @hide
+ */
+class QosCallbackConnection extends android.net.IQosCallback.Stub {
+
+    @NonNull private final ConnectivityManager mConnectivityManager;
+    @Nullable private volatile QosCallback mCallback;
+    @NonNull private final Executor mExecutor;
+
+    @VisibleForTesting
+    @Nullable
+    public QosCallback getCallback() {
+        return mCallback;
+    }
+
+    /**
+     * The constructor for the connection
+     *
+     * @param connectivityManager the mgr that created this connection
+     * @param callback the callback to send messages back to
+     * @param executor The executor on which the callback will be invoked. The provided
+     *                 {@link Executor} must run callback sequentially, otherwise the order of
+     *                 callbacks cannot be guaranteed.
+     */
+    QosCallbackConnection(@NonNull final ConnectivityManager connectivityManager,
+            @NonNull final QosCallback callback,
+            @NonNull final Executor executor) {
+        mConnectivityManager = Objects.requireNonNull(connectivityManager,
+                "connectivityManager must be non-null");
+        mCallback = Objects.requireNonNull(callback, "callback must be non-null");
+        mExecutor = Objects.requireNonNull(executor, "executor must be non-null");
+    }
+
+    /**
+     * Called when either the {@link EpsBearerQosSessionAttributes} has changed or on the first time
+     * the attributes have become available.
+     *
+     * @param session the session that is now available
+     * @param attributes the corresponding attributes of session
+     */
+    @Override
+    public void onQosEpsBearerSessionAvailable(@NonNull final QosSession session,
+            @NonNull final EpsBearerQosSessionAttributes attributes) {
+
+        mExecutor.execute(() -> {
+            final QosCallback callback = mCallback;
+            if (callback != null) {
+                callback.onQosSessionAvailable(session, attributes);
+            }
+        });
+    }
+
+    /**
+     * Called when the session is lost.
+     *
+     * @param session the session that was lost
+     */
+    @Override
+    public void onQosSessionLost(@NonNull final QosSession session) {
+        mExecutor.execute(() -> {
+            final QosCallback callback = mCallback;
+            if (callback != null) {
+                callback.onQosSessionLost(session);
+            }
+        });
+    }
+
+    /**
+     * Called when there is an error on the registered callback.
+     *
+     *  @param errorType the type of error
+     */
+    @Override
+    public void onError(@QosCallbackException.ExceptionType final int errorType) {
+        mExecutor.execute(() -> {
+            final QosCallback callback = mCallback;
+            if (callback != null) {
+                // Messages no longer need to be received since there was an error.
+                stopReceivingMessages();
+                mConnectivityManager.unregisterQosCallback(callback);
+                callback.onError(QosCallbackException.createException(errorType));
+            }
+        });
+    }
+
+    /**
+     * The callback will stop receiving messages.
+     * <p/>
+     * There are no synchronization guarantees on exactly when the callback will stop receiving
+     * messages.
+     */
+    void stopReceivingMessages() {
+        mCallback = null;
+    }
+}
diff --git a/framework/src/android/net/QosCallbackException.java b/framework/src/android/net/QosCallbackException.java
new file mode 100644
index 0000000..7fd9a52
--- /dev/null
+++ b/framework/src/android/net/QosCallbackException.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2020 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.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.SystemApi;
+import android.util.Log;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * This is the exception type passed back through the onError method on {@link QosCallback}.
+ * {@link QosCallbackException#getCause()} contains the actual error that caused this exception.
+ *
+ * The possible exception types as causes are:
+ * 1. {@link NetworkReleasedException}
+ * 2. {@link SocketNotBoundException}
+ * 3. {@link UnsupportedOperationException}
+ * 4. {@link SocketLocalAddressChangedException}
+ *
+ * @hide
+ */
+@SystemApi
+public final class QosCallbackException extends Exception {
+
+    /** @hide */
+    @IntDef(prefix = {"EX_TYPE_"}, value = {
+            EX_TYPE_FILTER_NONE,
+            EX_TYPE_FILTER_NETWORK_RELEASED,
+            EX_TYPE_FILTER_SOCKET_NOT_BOUND,
+            EX_TYPE_FILTER_NOT_SUPPORTED,
+            EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface ExceptionType {}
+
+    private static final String TAG = "QosCallbackException";
+
+    // Types of exceptions supported //
+    /** {@hide} */
+    public static final int EX_TYPE_FILTER_NONE = 0;
+
+    /** {@hide} */
+    public static final int EX_TYPE_FILTER_NETWORK_RELEASED = 1;
+
+    /** {@hide} */
+    public static final int EX_TYPE_FILTER_SOCKET_NOT_BOUND = 2;
+
+    /** {@hide} */
+    public static final int EX_TYPE_FILTER_NOT_SUPPORTED = 3;
+
+    /** {@hide} */
+    public static final int EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED = 4;
+
+    /**
+     * Creates exception based off of a type and message.  Not all types of exceptions accept a
+     * custom message.
+     *
+     * {@hide}
+     */
+    @NonNull
+    static QosCallbackException createException(@ExceptionType final int type) {
+        switch (type) {
+            case EX_TYPE_FILTER_NETWORK_RELEASED:
+                return new QosCallbackException(new NetworkReleasedException());
+            case EX_TYPE_FILTER_SOCKET_NOT_BOUND:
+                return new QosCallbackException(new SocketNotBoundException());
+            case EX_TYPE_FILTER_NOT_SUPPORTED:
+                return new QosCallbackException(new UnsupportedOperationException(
+                        "This device does not support the specified filter"));
+            case EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED:
+                return new QosCallbackException(
+                        new SocketLocalAddressChangedException());
+            default:
+                Log.wtf(TAG, "create: No case setup for exception type: '" + type + "'");
+                return new QosCallbackException(
+                        new RuntimeException("Unknown exception code: " + type));
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public QosCallbackException(@NonNull final String message) {
+        super(message);
+    }
+
+    /**
+     * @hide
+     */
+    public QosCallbackException(@NonNull final Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/framework/src/android/net/QosFilter.java b/framework/src/android/net/QosFilter.java
new file mode 100644
index 0000000..ab55002
--- /dev/null
+++ b/framework/src/android/net/QosFilter.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2020 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.annotation.NonNull;
+import android.annotation.SystemApi;
+
+import java.net.InetAddress;
+
+/**
+ * Provides the related filtering logic to the {@link NetworkAgent} to match {@link QosSession}s
+ * to their related {@link QosCallback}.
+ *
+ * Used by the {@link com.android.server.ConnectivityService} to validate a {@link QosCallback}
+ * is still able to receive a {@link QosSession}.
+ *
+ * @hide
+ */
+@SystemApi
+public abstract class QosFilter {
+
+    /**
+     * The constructor is kept hidden from outside this package to ensure that all derived types
+     * are known and properly handled when being passed to and from {@link NetworkAgent}.
+     *
+     * @hide
+     */
+    QosFilter() {
+    }
+
+    /**
+     * The network used with this filter.
+     *
+     * @return the registered {@link Network}
+     */
+    @NonNull
+    public abstract Network getNetwork();
+
+    /**
+     * Validates that conditions have not changed such that no further {@link QosSession}s should
+     * be passed back to the {@link QosCallback} associated to this filter.
+     *
+     * @return the error code when present, otherwise the filter is valid
+     *
+     * @hide
+     */
+    @QosCallbackException.ExceptionType
+    public abstract int validate();
+
+    /**
+     * Determines whether or not the parameters is a match for the filter.
+     *
+     * @param address the local address
+     * @param startPort the start of the port range
+     * @param endPort the end of the port range
+     * @return whether the parameters match the local address of the filter
+     */
+    public abstract boolean matchesLocalAddress(@NonNull InetAddress address,
+            int startPort, int endPort);
+}
+
diff --git a/framework/src/android/net/QosFilterParcelable.java b/framework/src/android/net/QosFilterParcelable.java
new file mode 100644
index 0000000..da3b2cf
--- /dev/null
+++ b/framework/src/android/net/QosFilterParcelable.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2021 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.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Log;
+
+import java.util.Objects;
+
+/**
+ * Aware of how to parcel different types of {@link QosFilter}s.  Any new type of qos filter must
+ * have a specialized case written here.
+ * <p/>
+ * Specifically leveraged when transferring {@link QosFilter} from
+ * {@link com.android.server.ConnectivityService} to {@link NetworkAgent} when the filter is first
+ * registered.
+ * <p/>
+ * This is not meant to be used in other contexts.
+ *
+ * @hide
+ */
+public final class QosFilterParcelable implements Parcelable {
+
+    private static final String LOG_TAG = QosFilterParcelable.class.getSimpleName();
+
+    // Indicates that the filter was not successfully written to the parcel.
+    private static final int NO_FILTER_PRESENT = 0;
+
+    // The parcel is of type qos socket filter.
+    private static final int QOS_SOCKET_FILTER = 1;
+
+    private final QosFilter mQosFilter;
+
+    /**
+     * The underlying qos filter.
+     * <p/>
+     * Null only in the case parceling failed.
+     */
+    @Nullable
+    public QosFilter getQosFilter() {
+        return mQosFilter;
+    }
+
+    public QosFilterParcelable(@NonNull final QosFilter qosFilter) {
+        Objects.requireNonNull(qosFilter, "qosFilter must be non-null");
+
+        // NOTE: Normally a type check would belong here, but doing so breaks unit tests that rely
+        // on mocking qos filter.
+        mQosFilter = qosFilter;
+    }
+
+    private QosFilterParcelable(final Parcel in) {
+        final int filterParcelType = in.readInt();
+
+        switch (filterParcelType) {
+            case QOS_SOCKET_FILTER: {
+                mQosFilter = new QosSocketFilter(QosSocketInfo.CREATOR.createFromParcel(in));
+                break;
+            }
+
+            case NO_FILTER_PRESENT:
+            default: {
+                mQosFilter = null;
+            }
+        }
+    }
+
+    public static final Creator<QosFilterParcelable> CREATOR = new Creator<QosFilterParcelable>() {
+        @Override
+        public QosFilterParcelable createFromParcel(final Parcel in) {
+            return new QosFilterParcelable(in);
+        }
+
+        @Override
+        public QosFilterParcelable[] newArray(final int size) {
+            return new QosFilterParcelable[size];
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(final Parcel dest, final int flags) {
+        if (mQosFilter instanceof QosSocketFilter) {
+            dest.writeInt(QOS_SOCKET_FILTER);
+            final QosSocketFilter qosSocketFilter = (QosSocketFilter) mQosFilter;
+            qosSocketFilter.getQosSocketInfo().writeToParcel(dest, 0);
+            return;
+        }
+        dest.writeInt(NO_FILTER_PRESENT);
+        Log.e(LOG_TAG, "Parceling failed, unknown type of filter present: " + mQosFilter);
+    }
+}
diff --git a/framework/src/android/net/QosSession.java b/framework/src/android/net/QosSession.java
new file mode 100644
index 0000000..4f3bb77
--- /dev/null
+++ b/framework/src/android/net/QosSession.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2020 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.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.SystemApi;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Provides identifying information of a QoS session.  Sent to an application through
+ * {@link QosCallback}.
+ *
+ * @hide
+ */
+@SystemApi
+public final class QosSession implements Parcelable {
+
+    /**
+     * The {@link QosSession} is a LTE EPS Session.
+     */
+    public static final int TYPE_EPS_BEARER = 1;
+
+    private final int mSessionId;
+
+    private final int mSessionType;
+
+    /**
+     * Gets the unique id of the session that is used to differentiate sessions across different
+     * types.
+     * <p/>
+     * Note: Different qos sessions can be provided by different actors.
+     *
+     * @return the unique id
+     */
+    public long getUniqueId() {
+        return (long) mSessionType << 32 | mSessionId;
+    }
+
+    /**
+     * Gets the session id that is unique within that type.
+     * <p/>
+     * Note: The session id is set by the actor providing the qos.  It can be either manufactured by
+     * the actor, but also may have a particular meaning within that type.  For example, using the
+     * bearer id as the session id for {@link android.telephony.data.EpsBearerQosSessionAttributes}
+     * is a straight forward way to keep the sessions unique from one another within that type.
+     *
+     * @return the id of the session
+     */
+    public int getSessionId() {
+        return mSessionId;
+    }
+
+    /**
+     * Gets the type of session.
+     */
+    @QosSessionType
+    public int getSessionType() {
+        return mSessionType;
+    }
+
+    /**
+     * Creates a {@link QosSession}.
+     *
+     * @param sessionId uniquely identifies the session across all sessions of the same type
+     * @param sessionType the type of session
+     */
+    public QosSession(final int sessionId, @QosSessionType final int sessionType) {
+        //Ensures the session id is unique across types of sessions
+        mSessionId = sessionId;
+        mSessionType = sessionType;
+    }
+
+
+    @Override
+    public String toString() {
+        return "QosSession{"
+                + "mSessionId=" + mSessionId
+                + ", mSessionType=" + mSessionType
+                + '}';
+    }
+
+    /**
+     * Annotations for types of qos sessions.
+     */
+    @IntDef(value = {
+            TYPE_EPS_BEARER,
+    })
+    @interface QosSessionType {}
+
+    private QosSession(final Parcel in) {
+        mSessionId = in.readInt();
+        mSessionType = in.readInt();
+    }
+
+    @NonNull
+    public static final Creator<QosSession> CREATOR = new Creator<QosSession>() {
+        @NonNull
+        @Override
+        public QosSession createFromParcel(@NonNull final Parcel in) {
+            return new QosSession(in);
+        }
+
+        @NonNull
+        @Override
+        public QosSession[] newArray(final int size) {
+            return new QosSession[size];
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull final Parcel dest, final int flags) {
+        dest.writeInt(mSessionId);
+        dest.writeInt(mSessionType);
+    }
+}
diff --git a/framework/src/android/net/QosSessionAttributes.java b/framework/src/android/net/QosSessionAttributes.java
new file mode 100644
index 0000000..7a88594
--- /dev/null
+++ b/framework/src/android/net/QosSessionAttributes.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 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.annotation.SystemApi;
+
+/**
+ * Implemented by classes that encapsulate Qos related attributes that describe a Qos Session.
+ *
+ * Use the instanceof keyword to determine the underlying type.
+ *
+ * @hide
+ */
+@SystemApi
+public interface QosSessionAttributes {
+}
diff --git a/framework/src/android/net/QosSocketFilter.java b/framework/src/android/net/QosSocketFilter.java
new file mode 100644
index 0000000..2080e68
--- /dev/null
+++ b/framework/src/android/net/QosSocketFilter.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2020 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.QosCallbackException.EX_TYPE_FILTER_NONE;
+import static android.net.QosCallbackException.EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.ParcelFileDescriptor;
+import android.system.ErrnoException;
+import android.system.Os;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.io.FileDescriptor;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.net.SocketAddress;
+import java.util.Objects;
+
+/**
+ * Filters a {@link QosSession} according to the binding on the provided {@link Socket}.
+ *
+ * @hide
+ */
+public class QosSocketFilter extends QosFilter {
+
+    private static final String TAG = QosSocketFilter.class.getSimpleName();
+
+    @NonNull
+    private final QosSocketInfo mQosSocketInfo;
+
+    /**
+     * Creates a {@link QosSocketFilter} based off of {@link QosSocketInfo}.
+     *
+     * @param qosSocketInfo the information required to filter and validate
+     */
+    public QosSocketFilter(@NonNull final QosSocketInfo qosSocketInfo) {
+        Objects.requireNonNull(qosSocketInfo, "qosSocketInfo must be non-null");
+        mQosSocketInfo = qosSocketInfo;
+    }
+
+    /**
+     * Gets the parcelable qos socket info that was used to create the filter.
+     */
+    @NonNull
+    public QosSocketInfo getQosSocketInfo() {
+        return mQosSocketInfo;
+    }
+
+    /**
+     * Performs two validations:
+     * 1. If the socket is not bound, then return
+     *    {@link QosCallbackException.EX_TYPE_FILTER_SOCKET_NOT_BOUND}. This is detected
+     *    by checking the local address on the filter which becomes null when the socket is no
+     *    longer bound.
+     * 2. In the scenario that the socket is now bound to a different local address, which can
+     *    happen in the case of UDP, then
+     *    {@link QosCallbackException.EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED} is returned.
+     * @return validation error code
+     */
+    @Override
+    public int validate() {
+        final InetSocketAddress sa = getAddressFromFileDescriptor();
+        if (sa == null) {
+            return QosCallbackException.EX_TYPE_FILTER_SOCKET_NOT_BOUND;
+        }
+
+        if (!sa.equals(mQosSocketInfo.getLocalSocketAddress())) {
+            return EX_TYPE_FILTER_SOCKET_LOCAL_ADDRESS_CHANGED;
+        }
+
+        return EX_TYPE_FILTER_NONE;
+    }
+
+    /**
+     * The local address of the socket's binding.
+     *
+     * Note: If the socket is no longer bound, null is returned.
+     *
+     * @return the local address
+     */
+    @Nullable
+    private InetSocketAddress getAddressFromFileDescriptor() {
+        final ParcelFileDescriptor parcelFileDescriptor = mQosSocketInfo.getParcelFileDescriptor();
+        if (parcelFileDescriptor == null) return null;
+
+        final FileDescriptor fd = parcelFileDescriptor.getFileDescriptor();
+        if (fd == null) return null;
+
+        final SocketAddress address;
+        try {
+            address = Os.getsockname(fd);
+        } catch (final ErrnoException e) {
+            Log.e(TAG, "getAddressFromFileDescriptor: getLocalAddress exception", e);
+            return null;
+        }
+        if (address instanceof InetSocketAddress) {
+            return (InetSocketAddress) address;
+        }
+        return null;
+    }
+
+    /**
+     * The network used with this filter.
+     *
+     * @return the registered {@link Network}
+     */
+    @NonNull
+    @Override
+    public Network getNetwork() {
+        return mQosSocketInfo.getNetwork();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    @Override
+    public boolean matchesLocalAddress(@NonNull final InetAddress address, final int startPort,
+            final int endPort) {
+        if (mQosSocketInfo.getLocalSocketAddress() == null) {
+            return false;
+        }
+
+        return matchesLocalAddress(mQosSocketInfo.getLocalSocketAddress(), address, startPort,
+                endPort);
+    }
+
+    /**
+     * Called from {@link QosSocketFilter#matchesLocalAddress(InetAddress, int, int)} with the
+     * filterSocketAddress coming from {@link QosSocketInfo#getLocalSocketAddress()}.
+     * <p>
+     * This method exists for testing purposes since {@link QosSocketInfo} couldn't be mocked
+     * due to being final.
+     *
+     * @param filterSocketAddress the socket address of the filter
+     * @param address the address to compare the filterSocketAddressWith
+     * @param startPort the start of the port range to check
+     * @param endPort the end of the port range to check
+     */
+    @VisibleForTesting
+    public static boolean matchesLocalAddress(@NonNull final InetSocketAddress filterSocketAddress,
+            @NonNull final InetAddress address,
+            final int startPort, final int endPort) {
+        return startPort <= filterSocketAddress.getPort()
+                && endPort >= filterSocketAddress.getPort()
+                && filterSocketAddress.getAddress().equals(address);
+    }
+}
diff --git a/framework/src/android/net/QosSocketInfo.java b/framework/src/android/net/QosSocketInfo.java
new file mode 100644
index 0000000..d37c469
--- /dev/null
+++ b/framework/src/android/net/QosSocketInfo.java
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2020 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.annotation.NonNull;
+import android.annotation.SystemApi;
+import android.os.Parcel;
+import android.os.ParcelFileDescriptor;
+import android.os.Parcelable;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.util.Objects;
+
+/**
+ * Used in conjunction with
+ * {@link ConnectivityManager#registerQosCallback}
+ * in order to receive Qos Sessions related to the local address and port of a bound {@link Socket}.
+ *
+ * @hide
+ */
+@SystemApi
+public final class QosSocketInfo implements Parcelable {
+
+    @NonNull
+    private final Network mNetwork;
+
+    @NonNull
+    private final ParcelFileDescriptor mParcelFileDescriptor;
+
+    @NonNull
+    private final InetSocketAddress mLocalSocketAddress;
+
+    /**
+     * The {@link Network} the socket is on.
+     *
+     * @return the registered {@link Network}
+     */
+    @NonNull
+    public Network getNetwork() {
+        return mNetwork;
+    }
+
+    /**
+     * The parcel file descriptor wrapped around the socket's file descriptor.
+     *
+     * @return the parcel file descriptor of the socket
+     */
+    @NonNull
+    ParcelFileDescriptor getParcelFileDescriptor() {
+        return mParcelFileDescriptor;
+    }
+
+    /**
+     * The local address of the socket passed into {@link QosSocketInfo(Network, Socket)}.
+     * The value does not reflect any changes that occur to the socket after it is first set
+     * in the constructor.
+     *
+     * @return the local address of the socket
+     */
+    @NonNull
+    public InetSocketAddress getLocalSocketAddress() {
+        return mLocalSocketAddress;
+    }
+
+    /**
+     * Creates a {@link QosSocketInfo} given a {@link Network} and bound {@link Socket}.  The
+     * {@link Socket} must remain bound in order to receive {@link QosSession}s.
+     *
+     * @param network the network
+     * @param socket the bound {@link Socket}
+     */
+    public QosSocketInfo(@NonNull final Network network, @NonNull final Socket socket)
+            throws IOException {
+        Objects.requireNonNull(socket, "socket cannot be null");
+
+        mNetwork = Objects.requireNonNull(network, "network cannot be null");
+        mParcelFileDescriptor = ParcelFileDescriptor.dup(socket.getFileDescriptor$());
+        mLocalSocketAddress =
+                new InetSocketAddress(socket.getLocalAddress(), socket.getLocalPort());
+    }
+
+    /* Parcelable methods */
+    private QosSocketInfo(final Parcel in) {
+        mNetwork = Objects.requireNonNull(Network.CREATOR.createFromParcel(in));
+        mParcelFileDescriptor = ParcelFileDescriptor.CREATOR.createFromParcel(in);
+
+        final int addressLength = in.readInt();
+        mLocalSocketAddress = readSocketAddress(in, addressLength);
+    }
+
+    private InetSocketAddress readSocketAddress(final Parcel in, final int addressLength) {
+        final byte[] address = new byte[addressLength];
+        in.readByteArray(address);
+        final int port = in.readInt();
+
+        try {
+            return new InetSocketAddress(InetAddress.getByAddress(address), port);
+        } catch (final UnknownHostException e) {
+            /* The catch block was purposely left empty.  UnknownHostException will never be thrown
+               since the address provided is numeric and non-null. */
+        }
+        return new InetSocketAddress();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull final Parcel dest, final int flags) {
+        mNetwork.writeToParcel(dest, 0);
+        mParcelFileDescriptor.writeToParcel(dest, 0);
+
+        final byte[] address = mLocalSocketAddress.getAddress().getAddress();
+        dest.writeInt(address.length);
+        dest.writeByteArray(address);
+        dest.writeInt(mLocalSocketAddress.getPort());
+    }
+
+    @NonNull
+    public static final Parcelable.Creator<QosSocketInfo> CREATOR =
+            new Parcelable.Creator<QosSocketInfo>() {
+            @NonNull
+            @Override
+            public QosSocketInfo createFromParcel(final Parcel in) {
+                return new QosSocketInfo(in);
+            }
+
+            @NonNull
+            @Override
+            public QosSocketInfo[] newArray(final int size) {
+                return new QosSocketInfo[size];
+            }
+        };
+}
diff --git a/framework/src/android/net/SocketLocalAddressChangedException.java b/framework/src/android/net/SocketLocalAddressChangedException.java
new file mode 100644
index 0000000..9daad83
--- /dev/null
+++ b/framework/src/android/net/SocketLocalAddressChangedException.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2021 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.annotation.SystemApi;
+
+/**
+ * Thrown when the local address of the socket has changed.
+ *
+ * @hide
+ */
+@SystemApi
+public class SocketLocalAddressChangedException extends Exception {
+    /** @hide */
+    public SocketLocalAddressChangedException() {
+        super("The local address of the socket changed");
+    }
+}
diff --git a/framework/src/android/net/SocketNotBoundException.java b/framework/src/android/net/SocketNotBoundException.java
new file mode 100644
index 0000000..b1d7026
--- /dev/null
+++ b/framework/src/android/net/SocketNotBoundException.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2021 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.annotation.SystemApi;
+
+/**
+ * Thrown when a previously bound socket becomes unbound.
+ *
+ * @hide
+ */
+@SystemApi
+public class SocketNotBoundException extends Exception {
+    /** @hide */
+    public SocketNotBoundException() {
+        super("The socket is unbound");
+    }
+}
diff --git a/framework/src/android/net/UidRange.aidl b/framework/src/android/net/UidRange.aidl
new file mode 100644
index 0000000..f70fc8e
--- /dev/null
+++ b/framework/src/android/net/UidRange.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2018 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;
+
+/**
+ * An inclusive range of UIDs.
+ *
+ * {@hide}
+ */
+parcelable UidRange;
\ No newline at end of file
diff --git a/framework/src/android/net/UidRange.java b/framework/src/android/net/UidRange.java
new file mode 100644
index 0000000..26518d3
--- /dev/null
+++ b/framework/src/android/net/UidRange.java
@@ -0,0 +1,152 @@
+/*
+ * 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.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.os.UserHandle;
+
+import java.util.Collection;
+
+/**
+ * An inclusive range of UIDs.
+ *
+ * @hide
+ */
+public final class UidRange implements Parcelable {
+    public final int start;
+    public final int stop;
+
+    public UidRange(int startUid, int stopUid) {
+        if (startUid < 0) throw new IllegalArgumentException("Invalid start UID.");
+        if (stopUid < 0) throw new IllegalArgumentException("Invalid stop UID.");
+        if (startUid > stopUid) throw new IllegalArgumentException("Invalid UID range.");
+        start = startUid;
+        stop  = stopUid;
+    }
+
+    /** Creates a UidRange for the specified user. */
+    public static UidRange createForUser(UserHandle user) {
+        final UserHandle nextUser = UserHandle.of(user.getIdentifier() + 1);
+        final int start = UserHandle.getUid(user, 0 /* appId */);
+        final int end = UserHandle.getUid(nextUser, 0) - 1;
+        return new UidRange(start, end);
+    }
+
+    /** Returns the smallest user Id which is contained in this UidRange */
+    public int getStartUser() {
+        return UserHandle.getUserHandleForUid(start).getIdentifier();
+    }
+
+    /** Returns the largest user Id which is contained in this UidRange */
+    public int getEndUser() {
+        return UserHandle.getUserHandleForUid(stop).getIdentifier();
+    }
+
+    /** Returns whether the UidRange contains the specified UID. */
+    public boolean contains(int uid) {
+        return start <= uid && uid <= stop;
+    }
+
+    /**
+     * Returns the count of UIDs in this range.
+     */
+    public int count() {
+        return 1 + stop - start;
+    }
+
+    /**
+     * @return {@code true} if this range contains every UID contained by the {@code other} range.
+     */
+    public boolean containsRange(UidRange other) {
+        return start <= other.start && other.stop <= stop;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = 17;
+        result = 31 * result + start;
+        result = 31 * result + stop;
+        return result;
+    }
+
+    @Override
+    public boolean equals(@Nullable Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o instanceof UidRange) {
+            UidRange other = (UidRange) o;
+            return start == other.start && stop == other.stop;
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return start + "-" + stop;
+    }
+
+    // Implement the Parcelable interface
+    // TODO: Consider making this class no longer parcelable, since all users are likely in the
+    // system server.
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(start);
+        dest.writeInt(stop);
+    }
+
+    public static final @android.annotation.NonNull Creator<UidRange> CREATOR =
+            new Creator<UidRange>() {
+        @Override
+        public UidRange createFromParcel(Parcel in) {
+            int start = in.readInt();
+            int stop = in.readInt();
+
+            return new UidRange(start, stop);
+        }
+        @Override
+        public UidRange[] newArray(int size) {
+            return new UidRange[size];
+        }
+    };
+
+    /**
+     * Returns whether any of the UidRange in the collection contains the specified uid
+     *
+     * @param ranges The collection of UidRange to check
+     * @param uid the uid in question
+     * @return {@code true} if the uid is contained within the ranges, {@code false} otherwise
+     *
+     * @see UidRange#contains(int)
+     */
+    public static boolean containsUid(Collection<UidRange> ranges, int uid) {
+        if (ranges == null) return false;
+        for (UidRange range : ranges) {
+            if (range.contains(uid)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/framework/src/android/net/util/SocketUtils.java b/framework/src/android/net/util/SocketUtils.java
deleted file mode 100644
index e64060f..0000000
--- a/framework/src/android/net/util/SocketUtils.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (C) 2015 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.util;
-
-import static android.system.OsConstants.SOL_SOCKET;
-import static android.system.OsConstants.SO_BINDTODEVICE;
-
-import android.annotation.NonNull;
-import android.annotation.Nullable;
-import android.annotation.SystemApi;
-import android.net.NetworkUtils;
-import android.system.ErrnoException;
-import android.system.NetlinkSocketAddress;
-import android.system.Os;
-import android.system.PacketSocketAddress;
-
-import libcore.io.IoBridge;
-
-import java.io.FileDescriptor;
-import java.io.IOException;
-import java.net.SocketAddress;
-
-/**
- * Collection of utilities to interact with raw sockets.
- * @hide
- */
-@SystemApi
-public final class SocketUtils {
-    /**
-     * Create a raw datagram socket that is bound to an interface.
-     *
-     * <p>Data sent through the socket will go directly to the underlying network, ignoring VPNs.
-     */
-    public static void bindSocketToInterface(@NonNull FileDescriptor socket, @NonNull String iface)
-            throws ErrnoException {
-        // SO_BINDTODEVICE actually takes a string. This works because the first member
-        // of struct ifreq is a NULL-terminated interface name.
-        // TODO: add a setsockoptString()
-        Os.setsockoptIfreq(socket, SOL_SOCKET, SO_BINDTODEVICE, iface);
-        NetworkUtils.protectFromVpn(socket);
-    }
-
-    /**
-     * Make a socket address to communicate with netlink.
-     */
-    @NonNull
-    public static SocketAddress makeNetlinkSocketAddress(int portId, int groupsMask) {
-        return new NetlinkSocketAddress(portId, groupsMask);
-    }
-
-    /**
-     * Make socket address that packet sockets can bind to.
-     *
-     * @param protocol the layer 2 protocol of the packets to receive. One of the {@code ETH_P_*}
-     *                 constants in {@link android.system.OsConstants}.
-     * @param ifIndex the interface index on which packets will be received.
-     */
-    @NonNull
-    public static SocketAddress makePacketSocketAddress(int protocol, int ifIndex) {
-        return new PacketSocketAddress(
-                protocol /* sll_protocol */,
-                ifIndex /* sll_ifindex */,
-                null /* sll_addr */);
-    }
-
-    /**
-     * Make a socket address that packet socket can send packets to.
-     * @deprecated Use {@link #makePacketSocketAddress(int, int, byte[])} instead.
-     *
-     * @param ifIndex the interface index on which packets will be sent.
-     * @param hwAddr the hardware address to which packets will be sent.
-     */
-    @Deprecated
-    @NonNull
-    public static SocketAddress makePacketSocketAddress(int ifIndex, @NonNull byte[] hwAddr) {
-        return new PacketSocketAddress(
-                0 /* sll_protocol */,
-                ifIndex /* sll_ifindex */,
-                hwAddr /* sll_addr */);
-    }
-
-    /**
-     * Make a socket address that a packet socket can send packets to.
-     *
-     * @param protocol the layer 2 protocol of the packets to send. One of the {@code ETH_P_*}
-     *                 constants in {@link android.system.OsConstants}.
-     * @param ifIndex the interface index on which packets will be sent.
-     * @param hwAddr the hardware address to which packets will be sent.
-     */
-    @NonNull
-    public static SocketAddress makePacketSocketAddress(int protocol, int ifIndex,
-            @NonNull byte[] hwAddr) {
-        return new PacketSocketAddress(
-                protocol /* sll_protocol */,
-                ifIndex /* sll_ifindex */,
-                hwAddr /* sll_addr */);
-    }
-
-    /**
-     * @see IoBridge#closeAndSignalBlockedThreads(FileDescriptor)
-     */
-    public static void closeSocket(@Nullable FileDescriptor fd) throws IOException {
-        IoBridge.closeAndSignalBlockedThreads(fd);
-    }
-
-    private SocketUtils() {}
-}
diff --git a/service/Android.bp b/service/Android.bp
index f20b89f..e65b7b4 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -63,6 +63,7 @@
         "unsupportedappusage",
     ],
     static_libs: [
+        "modules-utils-os",
         "net-utils-device-common",
         "net-utils-framework-common",
         "netd-client",
diff --git a/service/jarjar-rules.txt b/service/jarjar-rules.txt
index ef53ebb..d8205bf 100644
--- a/service/jarjar-rules.txt
+++ b/service/jarjar-rules.txt
@@ -1 +1,2 @@
-rule com.android.net.module.util.** com.android.connectivity.util.@1
\ No newline at end of file
+rule com.android.net.module.util.** com.android.connectivity.net-utils.@1
+rule com.android.modules.utils.** com.android.connectivity.modules-utils.@1
\ No newline at end of file