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| 1 | /* | ||
| 2 | * Copyright (c) 2000, 2010, 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.asInetSocketAddress(ssc.localAddress()).getAddress(); | ||
| 84 | } | ||
| 85 | |||
| 86 | public int getLocalPort() { | ||
| 87 | if (!ssc.isBound()) | ||
| 88 | return -1; | ||
| 89 | return Net.asInetSocketAddress(ssc.localAddress()).getPort(); | ||
| 90 | } | ||
| 91 | |||
| 92 | |||
| 93 | public Socket accept() throws IOException { | ||
| 94 | synchronized (ssc.blockingLock()) { | ||
| 95 | if (!ssc.isBound()) | ||
| 96 | throw new IllegalBlockingModeException(); | ||
| 97 | try { | ||
| 98 | if (timeout == 0) { | ||
| 99 | SocketChannel sc = ssc.accept(); | ||
| 100 | if (sc == null && !ssc.isBlocking()) | ||
| 101 | throw new IllegalBlockingModeException(); | ||
| 102 | return sc.socket(); | ||
| 103 | } | ||
| 104 | |||
| 105 | // Implement timeout with a selector | ||
| 106 | SelectionKey sk = null; | ||
| 107 | Selector sel = null; | ||
| 108 | ssc.configureBlocking(false); | ||
| 109 | try { | ||
| 110 | SocketChannel sc; | ||
| 111 | if ((sc = ssc.accept()) != null) | ||
| 112 | return sc.socket(); | ||
| 113 | sel = Util.getTemporarySelector(ssc); | ||
| 114 | sk = ssc.register(sel, SelectionKey.OP_ACCEPT); | ||
| 115 | long to = timeout; | ||
| 116 | for (;;) { | ||
| 117 | if (!ssc.isOpen()) | ||
| 118 | throw new ClosedChannelException(); | ||
| 119 | long st = System.currentTimeMillis(); | ||
| 120 | int ns = sel.select(to); | ||
| 121 | if (ns > 0 && | ||
| 122 | sk.isAcceptable() && ((sc = ssc.accept()) != null)) | ||
| 123 | return sc.socket(); | ||
| 124 | sel.selectedKeys().remove(sk); | ||
| 125 | to -= System.currentTimeMillis() - st; | ||
| 126 | if (to <= 0) | ||
| 127 | throw new SocketTimeoutException(); | ||
| 128 | } | ||
| 129 | } finally { | ||
| 130 | if (sk != null) | ||
| 131 | sk.cancel(); | ||
| 132 | if (ssc.isOpen()) | ||
| 133 | ssc.configureBlocking(true); | ||
| 134 | if (sel != null) | ||
| 135 | Util.releaseTemporarySelector(sel); | ||
| 136 | } | ||
| 137 | |||
| 138 | } catch (Exception x) { | ||
| 139 | Net.translateException(x); | ||
| 140 | assert false; | ||
| 141 | return null; // Never happens | ||
| 142 | } | ||
| 143 | } | ||
| 144 | } | ||
| 145 | |||
| 146 | public void close() throws IOException { | ||
| 147 | ssc.close(); | ||
| 148 | } | ||
| 149 | |||
| 150 | public ServerSocketChannel getChannel() { | ||
| 151 | return ssc; | ||
| 152 | } | ||
| 153 | |||
| 154 | public boolean isBound() { | ||
| 155 | return ssc.isBound(); | ||
| 156 | } | ||
| 157 | |||
| 158 | public boolean isClosed() { | ||
| 159 | return !ssc.isOpen(); | ||
| 160 | } | ||
| 161 | |||
| 162 | public void setSoTimeout(int timeout) throws SocketException { | ||
| 163 | this.timeout = timeout; | ||
| 164 | } | ||
| 165 | |||
| 166 | public int getSoTimeout() throws SocketException { | ||
| 167 | return timeout; | ||
| 168 | } | ||
| 169 | |||
| 170 | public void setReuseAddress(boolean on) throws SocketException { | ||
| 171 | try { | ||
| 172 | ssc.setOption(StandardSocketOptions.SO_REUSEADDR, on); | ||
| 173 | } catch (IOException x) { | ||
| 174 | Net.translateToSocketException(x); | ||
| 175 | } | ||
| 176 | } | ||
| 177 | |||
| 178 | public boolean getReuseAddress() throws SocketException { | ||
| 179 | try { | ||
| 180 | return ssc.getOption(StandardSocketOptions.SO_REUSEADDR).booleanValue(); | ||
| 181 | } catch (IOException x) { | ||
| 182 | Net.translateToSocketException(x); | ||
| 183 | return false; // Never happens | ||
| 184 | } | ||
| 185 | } | ||
| 186 | |||
| 187 | public String toString() { | ||
| 188 | if (!isBound()) | ||
| 189 | return "ServerSocket[unbound]"; | ||
| 190 | return "ServerSocket[addr=" + getInetAddress() + | ||
| 191 | // ",port=" + getPort() + | ||
| 192 | ",localport=" + getLocalPort() + "]"; | ||
| 193 | } | ||
| 194 | |||
| 195 | public void setReceiveBufferSize(int size) throws SocketException { | ||
| 196 | // size 0 valid for ServerSocketChannel, invalid for ServerSocket | ||
| 197 | if (size <= 0) | ||
| 198 | throw new IllegalArgumentException("size cannot be 0 or negative"); | ||
| 199 | try { | ||
| 200 | ssc.setOption(StandardSocketOptions.SO_RCVBUF, size); | ||
| 201 | } catch (IOException x) { | ||
| 202 | Net.translateToSocketException(x); | ||
| 203 | } | ||
| 204 | } | ||
| 205 | |||
| 206 | public int getReceiveBufferSize() throws SocketException { | ||
| 207 | try { | ||
| 208 | return ssc.getOption(StandardSocketOptions.SO_RCVBUF).intValue(); | ||
| 209 | } catch (IOException x) { | ||
| 210 | Net.translateToSocketException(x); | ||
| 211 | return -1; // Never happens | ||
| 212 | } | ||
| 213 | } | ||
| 214 | |||
| 215 | } | ||