ServerSocket.java revision 9902f3494c6d983879d8b9cfe6b1f771cfefe703
1adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/* 2adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one or more 3adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * contributor license agreements. See the NOTICE file distributed with 4adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * this work for additional information regarding copyright ownership. 5adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * The ASF licenses this file to You under the Apache License, Version 2.0 6adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * (the "License"); you may not use this file except in compliance with 7adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the License. You may obtain a copy of the License at 8adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 9adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 10adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 11adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Unless required by applicable law or agreed to in writing, software 12adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 13adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * See the License for the specific language governing permissions and 15adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * limitations under the License. 16adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 17adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 18adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpackage java.net; 19adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 209902f3494c6d983879d8b9cfe6b1f771cfefe703Elliott Hughesimport java.io.Closeable; 21adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.io.IOException; 22adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.nio.channels.ServerSocketChannel; 23adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 24adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 25adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * This class represents a server-side socket that waits for incoming client 26adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * connections. A {@code ServerSocket} handles the requests and sends back an 27adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * appropriate reply. The actual tasks that a server socket must accomplish are 28adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * implemented by an internal {@code SocketImpl} instance. 29adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 309902f3494c6d983879d8b9cfe6b1f771cfefe703Elliott Hughespublic class ServerSocket implements Closeable { 31a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes /** 32a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * The RI specifies that where the caller doesn't give an explicit backlog, 33a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * the default is 50. The OS disagrees, so we need to explicitly call listen(2). 34a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes */ 35a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes private static final int DEFAULT_BACKLOG = 50; 36adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 37a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes private final SocketImpl impl; 38adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 39a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes /** 40a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * @hide internal use only 41a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes */ 42a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public SocketImpl getImpl$() { 43a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes return impl; 44a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes } 45adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 46a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes static SocketImplFactory factory; 47adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 48adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private boolean isBound; 49adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 50adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private boolean isClosed; 51f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson 52adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 53a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * Constructs a new unbound {@code ServerSocket}. 54f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 55a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * @throws IOException if an error occurs while creating the socket. 56adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 57adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public ServerSocket() throws IOException { 58a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes this.impl = factory != null ? factory.createSocketImpl() 59f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson : new PlainServerSocketImpl(); 60a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes impl.create(true); 61adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 62adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 63adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 64a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * Constructs a new {@code ServerSocket} instance bound to the given {@code port}. 65a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * The backlog is set to 50. If {@code port == 0}, a port will be assigned by the OS. 66adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 67a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * @throws IOException if an error occurs while creating the socket. 68adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 69a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public ServerSocket(int port) throws IOException { 70a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes this(port, DEFAULT_BACKLOG, Inet4Address.ANY); 71adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 72adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 73adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 74a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * Constructs a new {@code ServerSocket} instance bound to the given {@code port}. 75a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * The backlog is set to {@code backlog}. 76a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * If {@code port == 0}, a port will be assigned by the OS. 77f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 78a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * @throws IOException if an error occurs while creating the socket. 79adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 80a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public ServerSocket(int port, int backlog) throws IOException { 81a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes this(port, backlog, Inet4Address.ANY); 82adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 83adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 84adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 85a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * Constructs a new {@code ServerSocket} instance bound to the given {@code localAddress} 86a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * and {@code port}. The backlog is set to {@code backlog}. 87a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * If {@code localAddress == null}, the ANY address is used. 88a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * If {@code port == 0}, a port will be assigned by the OS. 89f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 90a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes * @throws IOException if an error occurs while creating the socket. 91adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 92a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public ServerSocket(int port, int backlog, InetAddress localAddress) throws IOException { 93a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkListen(port); 94a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes this.impl = factory != null ? factory.createSocketImpl() 95f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson : new PlainServerSocketImpl(); 96a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes InetAddress addr = (localAddress == null) ? Inet4Address.ANY : localAddress; 97adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 98adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project synchronized (this) { 99adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project impl.create(true); 100adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 101a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes impl.bind(addr, port); 102adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project isBound = true; 103a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes impl.listen(backlog > 0 ? backlog : DEFAULT_BACKLOG); 104adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 105adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project close(); 106adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project throw e; 107adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 108adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 109adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 110adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 111adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 112adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Waits for an incoming request and blocks until the connection is opened. 113adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * This method returns a socket object representing the just opened 114adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * connection. 115f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 116adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return the connection representing socket. 117adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 118adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if an error occurs while accepting a new connection. 119adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 120adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public Socket accept() throws IOException { 121a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 122adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!isBound()) { 123b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new SocketException("Socket is not bound"); 124adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 125adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 126adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Socket aSocket = new Socket(); 127adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 12855392539fea537abfb6581b474918f9d611fba27Jesse Wilson implAccept(aSocket); 129adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 130adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project aSocket.close(); 131adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project throw e; 132adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 133adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return aSocket; 134adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 135adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 136ad41624e761bcf1af9c8008eb45187fc13983717Elliott Hughes private void checkListen(int aPort) { 137adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (aPort < 0 || aPort > 65535) { 138b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new IllegalArgumentException("Port out of range: " + aPort); 139adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 140adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 141adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 142adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 143adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Closes this server socket and its implementation. Any attempt to connect 144adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * to this socket thereafter will fail. 145f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 146adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 147adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if an error occurs while closing this socket. 148adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 149adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public void close() throws IOException { 150adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project isClosed = true; 151adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project impl.close(); 152adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 153adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 154adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 155adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Gets the local IP address of this server socket or {@code null} if the 156adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * socket is unbound. This is useful for multihomed hosts. 157f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 158adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return the local address of this server socket. 159adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 160adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public InetAddress getInetAddress() { 161adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!isBound()) { 162adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return null; 163adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 164adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return impl.getInetAddress(); 165adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 166adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 167adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 168adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Gets the local port of this server socket or {@code -1} if the socket is 169adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * unbound. 170f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 171adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return the local port this server is listening on. 172adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 173adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public int getLocalPort() { 174adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!isBound()) { 175adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return -1; 176adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 177adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return impl.getLocalPort(); 178adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 179adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 180adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 18106f47d3e721e7032c97f80b3b2c7d25a8e6f2d21Brian Carlstrom * Gets the socket {@link SocketOptions#SO_TIMEOUT accept timeout}. 182f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 183adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 184adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if the option cannot be retrieved. 185adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 186adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public synchronized int getSoTimeout() throws IOException { 187a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 188adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return ((Integer) impl.getOption(SocketOptions.SO_TIMEOUT)).intValue(); 189adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 190adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 191adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 192adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Invokes the server socket implementation to accept a connection on the 193adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * given socket {@code aSocket}. 194f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 195adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param aSocket 196adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the concrete {@code SocketImpl} to accept the connection 197adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * request on. 198adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 199adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if the connection cannot be accepted. 200adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 201adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project protected final void implAccept(Socket aSocket) throws IOException { 20255392539fea537abfb6581b474918f9d611fba27Jesse Wilson synchronized (this) { 20355392539fea537abfb6581b474918f9d611fba27Jesse Wilson impl.accept(aSocket.impl); 20455392539fea537abfb6581b474918f9d611fba27Jesse Wilson aSocket.accepted(); 20555392539fea537abfb6581b474918f9d611fba27Jesse Wilson } 206adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 207adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 208adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 209adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Sets the server socket implementation factory of this instance. This 210adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * method may only be invoked with sufficient security privilege and only 211adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * once during the application lifetime. 212f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 213adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param aFactory 214adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the streaming socket factory to be used for further socket 215adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * instantiations. 216adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 217adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if the factory could not be set or is already set. 218adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 219a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public static synchronized void setSocketFactory(SocketImplFactory aFactory) throws IOException { 220adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (factory != null) { 221b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new SocketException("Factory already set"); 222adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 223adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project factory = aFactory; 224adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 225adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 226adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 22706f47d3e721e7032c97f80b3b2c7d25a8e6f2d21Brian Carlstrom * Sets the {@link SocketOptions#SO_TIMEOUT accept timeout} in milliseconds for this socket. 2284e4000ed98f9056639fba0713a3fd3caacf9746cElliott Hughes * This accept timeout defines the period the socket will block waiting to 2294e4000ed98f9056639fba0713a3fd3caacf9746cElliott Hughes * accept a connection before throwing an {@code InterruptedIOException}. The value 2304e4000ed98f9056639fba0713a3fd3caacf9746cElliott Hughes * {@code 0} (default) is used to set an infinite timeout. To have effect 2314e4000ed98f9056639fba0713a3fd3caacf9746cElliott Hughes * this option must be set before the blocking method was called. 232f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 2334e4000ed98f9056639fba0713a3fd3caacf9746cElliott Hughes * @param timeout the timeout in milliseconds or 0 for no timeout. 234adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws SocketException 235adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if an error occurs while setting the option. 236adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 237adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public synchronized void setSoTimeout(int timeout) throws SocketException { 238a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 239adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (timeout < 0) { 240b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new IllegalArgumentException("timeout < 0"); 241adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 242adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project impl.setOption(SocketOptions.SO_TIMEOUT, Integer.valueOf(timeout)); 243adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 244adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 245adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 246adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns a textual representation of this server socket including the 247adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * address, port and the state. The port field is set to {@code 0} if there 248adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * is no connection to the server socket. 249f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 250adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return the textual socket representation. 251adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 252adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project @Override 253adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public String toString() { 254a389b4a499f40379b0b204d7ba1c2057663d95c0Jesse Wilson StringBuilder result = new StringBuilder(64); 255f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes result.append("ServerSocket["); 256adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!isBound()) { 257f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes return result.append("unbound]").toString(); 258adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 259f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes return result.append("addr=") 260f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes .append(getInetAddress().getHostName()).append("/") 261adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .append(getInetAddress().getHostAddress()).append( 262f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes ",port=0,localport=") 263f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes .append(getLocalPort()).append("]") 264adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .toString(); 265adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 266adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 267adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 2684d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * Binds this server socket to the given local socket address with a maximum 2694d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * backlog of 50 unaccepted connections. If the {@code localAddr} is set to 2704d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * {@code null} the socket will be bound to an available local address on 2714d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * any free port of the system. 272f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 273adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param localAddr 274adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the local address and port to bind on. 275adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IllegalArgumentException 276adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if the {@code SocketAddress} is not supported. 277adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws IOException 278adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if the socket is already bound or a problem occurs during 279adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * binding. 280adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 281adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public void bind(SocketAddress localAddr) throws IOException { 282a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes bind(localAddr, DEFAULT_BACKLOG); 283adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 284adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 285adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 286adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Binds this server socket to the given local socket address. If the 287adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * {@code localAddr} is set to {@code null} the socket will be bound to an 2884d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * available local address on any free port of the system. 289f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 2904d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * @param localAddr the local machine address and port to bind on. 2914d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * @param backlog the maximum number of unaccepted connections. Passing 0 or 2924d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * a negative value yields the default backlog of 50. 2934d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * @throws IllegalArgumentException if the {@code SocketAddress} is not 2944d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * supported. 2954d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * @throws IOException if the socket is already bound or a problem occurs 2964d743816cad738bfeccf6dc210fc7c9bd84a8777Jesse Wilson * during binding. 297adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 298adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public void bind(SocketAddress localAddr, int backlog) throws IOException { 299a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 300adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (isBound()) { 301b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new BindException("Socket is already bound"); 302adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 303adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project int port = 0; 304051128862ae7c5c031b8ddb763848ed264a63746Lorenzo Colitti InetAddress addr = Inet4Address.ANY; 305adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (localAddr != null) { 306adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!(localAddr instanceof InetSocketAddress)) { 307b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new IllegalArgumentException("Local address not an InetSocketAddress: " + 308b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes localAddr.getClass()); 309adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 310adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project InetSocketAddress inetAddr = (InetSocketAddress) localAddr; 311adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if ((addr = inetAddr.getAddress()) == null) { 312b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new SocketException("Host is unresolved: " + inetAddr.getHostName()); 313adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 314adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project port = inetAddr.getPort(); 315adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 316adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 317adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project synchronized (this) { 318adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 319adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project impl.bind(addr, port); 320adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project isBound = true; 321a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes impl.listen(backlog > 0 ? backlog : DEFAULT_BACKLOG); 322adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 323adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project close(); 324adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project throw e; 325adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 326adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 327adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 328adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 329adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 330adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Gets the local socket address of this server socket or {@code null} if 331adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the socket is unbound. This is useful on multihomed hosts. 332f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 333adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return the local socket address and port this socket is bound to. 334adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 335adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public SocketAddress getLocalSocketAddress() { 336adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!isBound()) { 337adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return null; 338adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 339adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return new InetSocketAddress(getInetAddress(), getLocalPort()); 340adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 341adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 342adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 343adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns whether this server socket is bound to a local address and port 344adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * or not. 345f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 346adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return {@code true} if this socket is bound, {@code false} otherwise. 347adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 348adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public boolean isBound() { 349adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return isBound; 350adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 351adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 352adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 353adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns whether this server socket is closed or not. 354f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 355adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return {@code true} if this socket is closed, {@code false} otherwise. 356adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 357adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public boolean isClosed() { 358adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return isClosed; 359adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 360adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 361a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes private void checkOpen() throws SocketException { 362adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (isClosed()) { 363b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new SocketException("Socket is closed"); 364adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 365adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 366adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 367adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 368adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Sets the value for the socket option {@code SocketOptions.SO_REUSEADDR}. 369f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 370adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param reuse 371adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the socket option setting. 372adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws SocketException 373adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if an error occurs while setting the option value. 374adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 375adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public void setReuseAddress(boolean reuse) throws SocketException { 376a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 3770371d85fa3ecb5f162d107cdbff0a99cd987fdccElliott Hughes impl.setOption(SocketOptions.SO_REUSEADDR, Boolean.valueOf(reuse)); 378adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 379adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 380adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 381adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Gets the value of the socket option {@code SocketOptions.SO_REUSEADDR}. 382f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 383adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @return {@code true} if the option is enabled, {@code false} otherwise. 384adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws SocketException 385adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * if an error occurs while reading the option value. 386adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 387adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public boolean getReuseAddress() throws SocketException { 388a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 389a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes return ((Boolean) impl.getOption(SocketOptions.SO_REUSEADDR)).booleanValue(); 390adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 391adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 392adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 393a9c6c9013b08934867f71b69a90efce0c1b66918Elliott Hughes * Sets this socket's {@link SocketOptions#SO_SNDBUF receive buffer size}. 394adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 395adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public void setReceiveBufferSize(int size) throws SocketException { 396a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 397adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (size < 1) { 398b1396870f92135aa140bd2b86221768dea5bc11dElliott Hughes throw new IllegalArgumentException("size < 1"); 399adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 400adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project impl.setOption(SocketOptions.SO_RCVBUF, Integer.valueOf(size)); 401adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 402adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 403adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 404a9c6c9013b08934867f71b69a90efce0c1b66918Elliott Hughes * Returns this socket's {@link SocketOptions#SO_RCVBUF receive buffer size}. 405adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 406adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public int getReceiveBufferSize() throws SocketException { 407a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes checkOpen(); 408adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return ((Integer) impl.getOption(SocketOptions.SO_RCVBUF)).intValue(); 409adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 410adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 411adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 4120d93c38cc3c7a5001aece8a18cafc6d1fc7551f3Elliott Hughes * Returns this socket's {@code ServerSocketChannel}, if one exists. A channel is 4130d93c38cc3c7a5001aece8a18cafc6d1fc7551f3Elliott Hughes * available only if this socket wraps a channel. (That is, you can go from a 4140d93c38cc3c7a5001aece8a18cafc6d1fc7551f3Elliott Hughes * channel to a socket and back again, but you can't go from an arbitrary socket to a channel.) 4150d93c38cc3c7a5001aece8a18cafc6d1fc7551f3Elliott Hughes * In practice, this means that the socket must have been created by 4160d93c38cc3c7a5001aece8a18cafc6d1fc7551f3Elliott Hughes * {@link java.nio.channels.ServerSocketChannel#open}. 417adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 418adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public ServerSocketChannel getChannel() { 419adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return null; 420adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 421adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 422adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 423adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Sets performance preferences for connection time, latency and bandwidth. 424adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * <p> 425adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * This method does currently nothing. 426f5597e626ecf7949d249dea08c1a2964d890ec11Jesse Wilson * 427adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param connectionTime 428adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the value representing the importance of a short connecting 429adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * time. 430adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param latency 431adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the value representing the importance of low latency. 432adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param bandwidth 433adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the value representing the importance of high bandwidth. 434adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 435a3b57e9cb41fb00ac607cd330fa73270b564b66cElliott Hughes public void setPerformancePreferences(int connectionTime, int latency, int bandwidth) { 436adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // Our socket implementation only provide one protocol: TCP/IP, so 437adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // we do nothing for this method 438adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 439adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project} 440