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comparison src/ch/ethz/ssh2/LocalStreamForwarder.java @ 273:91a31873c42a ganymed

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start conversion from trilead to ganymed
author Carl Byington <carl@five-ten-sg.com>
date Fri, 18 Jul 2014 11:21:46 -0700
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children 071eccdff8ea
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272:ce2f4e397703 273:91a31873c42a
1 /*
2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
3 * Please refer to the LICENSE.txt for licensing details.
4 */
5 package ch.ethz.ssh2;
6
7 import java.io.IOException;
8 import java.io.InputStream;
9 import java.io.OutputStream;
10 import java.net.InetAddress;
11
12 import ch.ethz.ssh2.channel.Channel;
13 import ch.ethz.ssh2.channel.ChannelManager;
14
15 /**
16 * A <code>LocalStreamForwarder</code> forwards an Input- and Outputstream
17 * pair via the secure tunnel to another host (which may or may not be identical
18 * to the remote SSH-2 server).
19 *
20 * @author Christian Plattner
21 * @version 2.50, 03/15/10
22 */
23 public class LocalStreamForwarder
24 {
25 private ChannelManager cm;
26
27 private Channel cn;
28
29 LocalStreamForwarder(ChannelManager cm, String host_to_connect, int port_to_connect) throws IOException
30 {
31 this.cm = cm;
32 cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect,
33 InetAddress.getLocalHost().getHostAddress(), 0);
34 }
35
36 /**
37 * @return An <code>InputStream</code> object.
38 * @throws IOException
39 */
40 public InputStream getInputStream() throws IOException
41 {
42 return cn.getStdoutStream();
43 }
44
45 /**
46 * Get the OutputStream. Please be aware that the implementation MAY use an
47 * internal buffer. To make sure that the buffered data is sent over the
48 * tunnel, you have to call the <code>flush</code> method of the
49 * <code>OutputStream</code>. To signal EOF, please use the
50 * <code>close</code> method of the <code>OutputStream</code>.
51 *
52 * @return An <code>OutputStream</code> object.
53 * @throws IOException
54 */
55 public OutputStream getOutputStream() throws IOException
56 {
57 return cn.getStdinStream();
58 }
59
60 /**
61 * Close the underlying SSH forwarding channel and free up resources.
62 * You can also use this method to force the shutdown of the underlying
63 * forwarding channel. Pending output (OutputStream not flushed) will NOT
64 * be sent. Pending input (InputStream) can still be read. If the shutdown
65 * operation is already in progress (initiated from either side), then this
66 * call is a no-op.
67 *
68 * @throws IOException
69 */
70 public void close() throws IOException
71 {
72 cm.closeChannel(cn, "Closed due to user request.", true);
73 }
74 }