source: trunk/vnc/vnc_javasrc/HTTPConnectSocketFactory.java @ 143

Last change on this file since 143 was 66, checked in by quentin, 17 years ago

Initial checkin of modified Java VNC viewer for use as remote console

File size: 2.4 KB
Line 
1//
2//  Copyright (C) 2002 Constantin Kaplinsky, Inc.  All Rights Reserved.
3//
4//  This is free software; you can redistribute it and/or modify
5//  it under the terms of the GNU General Public License as published by
6//  the Free Software Foundation; either version 2 of the License, or
7//  (at your option) any later version.
8//
9//  This software is distributed in the hope that it will be useful,
10//  but WITHOUT ANY WARRANTY; without even the implied warranty of
11//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12//  GNU General Public License for more details.
13//
14//  You should have received a copy of the GNU General Public License
15//  along with this software; if not, write to the Free Software
16//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
17//  USA.
18//
19
20//
21// HTTPConnectSocketFactory.java together with HTTPConnectSocket.java
22// implement an alternate way to connect to VNC servers via one or two
23// HTTP proxies supporting the HTTP CONNECT method.
24//
25
26import java.applet.*;
27import java.net.*;
28import java.io.*;
29
30class HTTPConnectSocketFactory implements SocketFactory {
31
32  public Socket createSocket(String host, int port, Applet applet)
33    throws IOException {
34
35    return createSocket(host, port,
36                        applet.getParameter("PROXYHOST1"),
37                        applet.getParameter("PROXYPORT1"));
38  }
39
40  public Socket createSocket(String host, int port, String[] args)
41    throws IOException {
42
43    return createSocket(host, port,
44                        readArg(args, "PROXYHOST1"),
45                        readArg(args, "PROXYPORT1"));
46  }
47
48  public Socket createSocket(String host, int port,
49                             String proxyHost, String proxyPortStr)
50    throws IOException {
51
52    int proxyPort = 0;
53    if (proxyPortStr != null) {
54      try {
55        proxyPort = Integer.parseInt(proxyPortStr);
56      } catch (NumberFormatException e) { }
57    }
58
59    if (proxyHost == null || proxyPort == 0) {
60      System.out.println("Incomplete parameter list for HTTPConnectSocket");
61      return new Socket(host, port);
62    }
63
64    System.out.println("HTTP CONNECT via proxy " + proxyHost +
65                       " port " + proxyPort);
66    HTTPConnectSocket s =
67      new HTTPConnectSocket(host, port, proxyHost, proxyPort);
68
69    return (Socket)s;
70  }
71
72  private String readArg(String[] args, String name) {
73
74    for (int i = 0; i < args.length; i += 2) {
75      if (args[i].equalsIgnoreCase(name)) {
76        try {
77          return args[i+1];
78        } catch (Exception e) {
79          return null;
80        }
81      }
82    }
83    return null;
84  }
85}
86
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