1 /* 2 * Copyright 2022 Google LLC 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.google.android.libraries.mobiledatadownload.downloader.offroad; 17 18 import android.net.TrafficStats; 19 import java.io.IOException; 20 import java.net.InetAddress; 21 import java.net.Socket; 22 import javax.net.SocketFactory; 23 24 /** A custom SocketFactory that tags the traffic going through the socket created by it. */ 25 // TODO(b/141362798): Make package-private when OkHttpFileDownloaderModule supports non-framework 26 // apps. 27 public final class TrafficStatsSocketFactory extends SocketFactory { 28 29 private final SocketFactory delegate; 30 private final int trafficTag; 31 TrafficStatsSocketFactory(SocketFactory delegate, int trafficTag)32 public TrafficStatsSocketFactory(SocketFactory delegate, int trafficTag) { 33 this.delegate = delegate; 34 this.trafficTag = trafficTag; 35 } 36 37 @Override createSocket()38 public Socket createSocket() throws IOException { 39 Socket socket = delegate.createSocket(); 40 TrafficStats.setThreadStatsTag(trafficTag); 41 TrafficStats.tagSocket(socket); 42 return socket; 43 } 44 45 @Override createSocket(String host, int port)46 public Socket createSocket(String host, int port) throws IOException { 47 Socket socket = delegate.createSocket(host, port); 48 TrafficStats.setThreadStatsTag(trafficTag); 49 TrafficStats.tagSocket(socket); 50 return socket; 51 } 52 53 @Override createSocket(String host, int port, InetAddress localHost, int localPort)54 public Socket createSocket(String host, int port, InetAddress localHost, int localPort) 55 throws IOException { 56 Socket socket = delegate.createSocket(host, port, localHost, localPort); 57 TrafficStats.setThreadStatsTag(trafficTag); 58 TrafficStats.tagSocket(socket); 59 return socket; 60 } 61 62 @Override createSocket(InetAddress host, int port)63 public Socket createSocket(InetAddress host, int port) throws IOException { 64 Socket socket = delegate.createSocket(host, port); 65 TrafficStats.setThreadStatsTag(trafficTag); 66 TrafficStats.tagSocket(socket); 67 return socket; 68 } 69 70 @Override createSocket(InetAddress address, int port, InetAddress localAddress, int localPort)71 public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) 72 throws IOException { 73 Socket socket = delegate.createSocket(address, port, localAddress, localPort); 74 TrafficStats.setThreadStatsTag(trafficTag); 75 TrafficStats.tagSocket(socket); 76 return socket; 77 } 78 } 79