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annotate src/ch/ethz/ssh2/channel/LocalAcceptThread.java @ 435:9c6a269fabb5 stable-1.9.2
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| author | Carl Byington <carl@five-ten-sg.com> |
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| date | Thu, 09 Apr 2015 11:32:38 -0700 |
| parents | 071eccdff8ea |
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| rev | line source |
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1 /* |
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2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved. |
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3 * Please refer to the LICENSE.txt for licensing details. |
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4 */ |
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5 package ch.ethz.ssh2.channel; |
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6 |
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7 import java.io.IOException; |
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8 import java.net.InetSocketAddress; |
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9 import java.net.ServerSocket; |
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10 import java.net.Socket; |
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11 |
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12 /** |
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13 * LocalAcceptThread. |
| 307 | 14 * |
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15 * @author Christian Plattner |
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16 * @version 2.50, 03/15/10 |
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17 */ |
| 307 | 18 public class LocalAcceptThread extends Thread implements IChannelWorkerThread { |
| 19 ChannelManager cm; | |
| 20 String host_to_connect; | |
| 21 int port_to_connect; | |
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22 |
| 307 | 23 final ServerSocket ss; |
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24 |
| 307 | 25 public LocalAcceptThread(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect) |
| 26 throws IOException { | |
| 27 this.cm = cm; | |
| 28 this.host_to_connect = host_to_connect; | |
| 29 this.port_to_connect = port_to_connect; | |
| 30 ss = new ServerSocket(local_port); | |
| 31 } | |
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32 |
| 307 | 33 public LocalAcceptThread(ChannelManager cm, InetSocketAddress localAddress, String host_to_connect, |
| 34 int port_to_connect) throws IOException { | |
| 35 this.cm = cm; | |
| 36 this.host_to_connect = host_to_connect; | |
| 37 this.port_to_connect = port_to_connect; | |
| 38 ss = new ServerSocket(); | |
| 39 ss.bind(localAddress); | |
| 40 } | |
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41 |
| 307 | 42 public ServerSocket getServerSocket() { |
| 43 return ss; | |
| 44 } | |
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45 |
| 307 | 46 @Override |
| 47 public void run() { | |
| 48 try { | |
| 49 cm.registerThread(this); | |
| 50 } | |
| 51 catch (IOException e) { | |
| 52 stopWorking(); | |
| 53 return; | |
| 54 } | |
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55 |
| 307 | 56 while (true) { |
| 57 Socket s = null; | |
| 58 | |
| 59 try { | |
| 60 s = ss.accept(); | |
| 61 } | |
| 62 catch (IOException e) { | |
| 63 stopWorking(); | |
| 64 return; | |
| 65 } | |
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66 |
| 307 | 67 Channel cn = null; |
| 68 StreamForwarder r2l = null; | |
| 69 StreamForwarder l2r = null; | |
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70 |
| 307 | 71 try { |
| 72 /* This may fail, e.g., if the remote port is closed (in optimistic terms: not open yet) */ | |
| 73 cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, s.getInetAddress().getHostAddress(), s | |
| 74 .getPort()); | |
| 75 } | |
| 76 catch (IOException e) { | |
| 77 /* Simply close the local socket and wait for the next incoming connection */ | |
| 78 try { | |
| 79 s.close(); | |
| 80 } | |
| 81 catch (IOException ignore) { | |
| 82 } | |
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83 |
| 307 | 84 continue; |
| 85 } | |
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86 |
| 307 | 87 try { |
| 88 r2l = new StreamForwarder(cn, null, null, cn.stdoutStream, s.getOutputStream(), "RemoteToLocal"); | |
| 89 l2r = new StreamForwarder(cn, r2l, s, s.getInputStream(), cn.stdinStream, "LocalToRemote"); | |
| 90 } | |
| 91 catch (IOException e) { | |
| 92 try { | |
| 93 /* This message is only visible during debugging, since we discard the channel immediatelly */ | |
| 94 cn.cm.closeChannel(cn, e, true); | |
| 95 } | |
| 96 catch (IOException ignore) { | |
| 97 } | |
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98 |
| 307 | 99 continue; |
| 100 } | |
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101 |
| 307 | 102 r2l.setDaemon(true); |
| 103 l2r.setDaemon(true); | |
| 104 r2l.start(); | |
| 105 l2r.start(); | |
| 106 } | |
| 107 } | |
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108 |
| 307 | 109 public void stopWorking() { |
| 110 try { | |
| 111 /* This will lead to an IOException in the ss.accept() call */ | |
| 112 ss.close(); | |
| 113 } | |
| 114 catch (IOException ignored) { | |
| 115 } | |
| 116 } | |
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117 } |