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1 package myVncProxy;
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0
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2 //
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3 // Copyright (C) 2002 Constantin Kaplinsky, Inc. All Rights Reserved.
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4 //
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5 // This is free software; you can redistribute it and/or modify
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6 // it under the terms of the GNU General Public License as published by
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7 // the Free Software Foundation; either version 2 of the License, or
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8 // (at your option) any later version.
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9 //
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10 // This software is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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14 //
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15 // You should have received a copy of the GNU General Public License
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16 // along with this software; if not, write to the Free Software
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17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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18 // USA.
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19 //
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20
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21 //
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22 // HTTPConnectSocketFactory.java together with HTTPConnectSocket.java
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23 // implement an alternate way to connect to VNC servers via one or two
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24 // HTTP proxies supporting the HTTP CONNECT method.
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25 //
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26
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27 import java.applet.*;
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28 import java.net.*;
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29 import java.io.*;
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30
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31 class HTTPConnectSocketFactory implements SocketFactory {
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32
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33 public Socket createSocket(String host, int port, Applet applet)
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34 throws IOException {
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35
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36 return createSocket(host, port,
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37 applet.getParameter("PROXYHOST1"),
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38 applet.getParameter("PROXYPORT1"));
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39 }
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40
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41 public Socket createSocket(String host, int port, String[] args)
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42 throws IOException {
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43
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44 return createSocket(host, port,
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45 readArg(args, "PROXYHOST1"),
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46 readArg(args, "PROXYPORT1"));
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47 }
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48
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49 public Socket createSocket(String host, int port,
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50 String proxyHost, String proxyPortStr)
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51 throws IOException {
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52
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53 int proxyPort = 0;
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54 if (proxyPortStr != null) {
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55 try {
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56 proxyPort = Integer.parseInt(proxyPortStr);
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57 } catch (NumberFormatException e) { }
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58 }
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59
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60 if (proxyHost == null || proxyPort == 0) {
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61 System.out.println("Incomplete parameter list for HTTPConnectSocket");
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62 return new Socket(host, port);
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63 }
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64
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65 System.out.println("HTTP CONNECT via proxy " + proxyHost +
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66 " port " + proxyPort);
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67 HTTPConnectSocket s =
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68 new HTTPConnectSocket(host, port, proxyHost, proxyPort);
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69
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70 return (Socket)s;
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71 }
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72
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73 private String readArg(String[] args, String name) {
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74
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75 for (int i = 0; i < args.length; i += 2) {
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76 if (args[i].equalsIgnoreCase(name)) {
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77 try {
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78 return args[i+1];
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79 } catch (Exception e) {
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80 return null;
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81 }
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82 }
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83 }
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84 return null;
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85 }
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86 }
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87
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