1 /* 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.nio.ch; 27 28 import java.io.*; 29 import java.net.*; 30 import java.nio.channels.*; 31 32 33 // Make a server-socket channel look like a server socket. 34 // 35 // The methods in this class are defined in exactly the same order as in 36 // java.net.ServerSocket so as to simplify tracking future changes to that 37 // class. 38 // 39 40 public class ServerSocketAdaptor // package-private 41 extends ServerSocket 42 { 43 44 // The channel being adapted 45 private final ServerSocketChannelImpl ssc; 46 47 // Timeout "option" value for accepts 48 private volatile int timeout = 0; 49 50 public static ServerSocket create(ServerSocketChannelImpl ssc) { 51 try { 52 return new ServerSocketAdaptor(ssc); 53 } catch (IOException x) { 54 throw new Error(x); 55 } 56 } 57 58 // ## super will create a useless impl 59 private ServerSocketAdaptor(ServerSocketChannelImpl ssc) 60 throws IOException 61 { 62 this.ssc = ssc; 63 } 64 65 66 public void bind(SocketAddress local) throws IOException { 67 bind(local, 50); 68 } 69 70 public void bind(SocketAddress local, int backlog) throws IOException { 71 if (local == null) 72 local = new InetSocketAddress(0); 73 try { 74 ssc.bind(local, backlog); 75 } catch (Exception x) { 76 Net.translateException(x); 77 } 78 } 79 80 public InetAddress getInetAddress() { 81 if (!ssc.isBound()) 82 return null; 83 return Net.getRevealedLocalAddress(ssc.localAddress()).getAddress(); 84 85 } 86 87 public int getLocalPort() { 88 if (!ssc.isBound()) 89 return -1; 90 return Net.asInetSocketAddress(ssc.localAddress()).getPort(); 91 } 92 93 94 public Socket accept() throws IOException { 95 synchronized (ssc.blockingLock()) { 96 if (!ssc.isBound()) 97 throw new IllegalBlockingModeException(); 98 try { 99 if (timeout == 0) { 100 SocketChannel sc = ssc.accept(); 101 if (sc == null && !ssc.isBlocking()) 102 throw new IllegalBlockingModeException(); 103 return sc.socket(); 104 } 105 106 ssc.configureBlocking(false); 107 try { 108 SocketChannel sc; 109 if ((sc = ssc.accept()) != null) 110 return sc.socket(); 111 long to = timeout; 112 for (;;) { 113 if (!ssc.isOpen()) 114 throw new ClosedChannelException(); 115 long st = System.currentTimeMillis(); 116 int result = ssc.poll(Net.POLLIN, to); 117 if (result > 0 && ((sc = ssc.accept()) != null)) 118 return sc.socket(); 119 to -= System.currentTimeMillis() - st; 120 if (to <= 0) 121 throw new SocketTimeoutException(); 122 } 123 } finally { 124 if (ssc.isOpen()) 125 ssc.configureBlocking(true); 126 } 127 128 } catch (Exception x) { 129 Net.translateException(x); 130 assert false; 131 return null; // Never happens 132 } 133 } 134 } 135 136 public void close() throws IOException { 137 ssc.close(); 138 } 139 140 public ServerSocketChannel getChannel() { 141 return ssc; 142 } 143 144 public boolean isBound() { 145 return ssc.isBound(); 146 } 147 148 public boolean isClosed() { 149 return !ssc.isOpen(); 150 } 151 152 public void setSoTimeout(int timeout) throws SocketException { 153 this.timeout = timeout; 154 } 155 156 public int getSoTimeout() throws SocketException { 157 return timeout; 158 } 159 160 public void setReuseAddress(boolean on) throws SocketException { 161 try { 162 ssc.setOption(StandardSocketOptions.SO_REUSEADDR, on); 163 } catch (IOException x) { 164 Net.translateToSocketException(x); 165 } 166 } 167 168 public boolean getReuseAddress() throws SocketException { 169 try { 170 return ssc.getOption(StandardSocketOptions.SO_REUSEADDR).booleanValue(); 171 } catch (IOException x) { 172 Net.translateToSocketException(x); 173 return false; // Never happens 174 } 175 } 176 177 public String toString() { 178 if (!isBound()) 179 return "ServerSocket[unbound]"; 180 return "ServerSocket[addr=" + getInetAddress() + 181 // ",port=" + getPort() + 182 ",localport=" + getLocalPort() + "]"; 183 } 184 185 public void setReceiveBufferSize(int size) throws SocketException { 186 // size 0 valid for ServerSocketChannel, invalid for ServerSocket 187 if (size <= 0) 188 throw new IllegalArgumentException("size cannot be 0 or negative"); 189 try { 190 ssc.setOption(StandardSocketOptions.SO_RCVBUF, size); 191 } catch (IOException x) { 192 Net.translateToSocketException(x); 193 } 194 } 195 196 public int getReceiveBufferSize() throws SocketException { 197 try { 198 return ssc.getOption(StandardSocketOptions.SO_RCVBUF).intValue(); 199 } catch (IOException x) { 200 Net.translateToSocketException(x); 201 return -1; // Never happens 202 } 203 } 204 205 } 206
