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comparison src/com/trilead/ssh2/LocalStreamForwarder.java @ 0:0ce5cc452d02

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initial version
author Carl Byington <carl@five-ten-sg.com>
date Thu, 22 May 2014 10:41:19 -0700
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1
2 package com.trilead.ssh2;
3
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.OutputStream;
7
8 import com.trilead.ssh2.channel.Channel;
9 import com.trilead.ssh2.channel.ChannelManager;
10 import com.trilead.ssh2.channel.LocalAcceptThread;
11
12
13 /**
14 * A <code>LocalStreamForwarder</code> forwards an Input- and Outputstream
15 * pair via the secure tunnel to another host (which may or may not be identical
16 * to the remote SSH-2 server).
17 *
18 * @author Christian Plattner, plattner@trilead.com
19 * @version $Id: LocalStreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
20 */
21 public class LocalStreamForwarder {
22 ChannelManager cm;
23
24 String host_to_connect;
25 int port_to_connect;
26 LocalAcceptThread lat;
27
28 Channel cn;
29
30 LocalStreamForwarder(ChannelManager cm, String host_to_connect, int port_to_connect) throws IOException {
31 this.cm = cm;
32 this.host_to_connect = host_to_connect;
33 this.port_to_connect = port_to_connect;
34 cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, "127.0.0.1", 0);
35 }
36
37 /**
38 * @return An <code>InputStream</code> object.
39 * @throws IOException
40 */
41 public InputStream getInputStream() throws IOException {
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 return cn.getStdinStream();
57 }
58
59 /**
60 * Close the underlying SSH forwarding channel and free up resources.
61 * You can also use this method to force the shutdown of the underlying
62 * forwarding channel. Pending output (OutputStream not flushed) will NOT
63 * be sent. Pending input (InputStream) can still be read. If the shutdown
64 * operation is already in progress (initiated from either side), then this
65 * call is a no-op.
66 *
67 * @throws IOException
68 */
69 public void close() throws IOException {
70 cm.closeChannel(cn, "Closed due to user request.", true);
71 }
72 }