1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 package org.apache.mina.proxy;
21
22 import java.net.InetSocketAddress;
23 import java.net.SocketAddress;
24 import java.util.concurrent.Executor;
25
26 import org.apache.mina.core.buffer.IoBuffer;
27 import org.apache.mina.core.file.FileRegion;
28 import org.apache.mina.core.filterchain.IoFilter;
29 import org.apache.mina.core.future.ConnectFuture;
30 import org.apache.mina.core.future.DefaultConnectFuture;
31 import org.apache.mina.core.service.AbstractIoConnector;
32 import org.apache.mina.core.service.DefaultTransportMetadata;
33 import org.apache.mina.core.service.IoHandler;
34 import org.apache.mina.core.service.TransportMetadata;
35 import org.apache.mina.core.session.IoSession;
36 import org.apache.mina.core.session.IoSessionConfig;
37 import org.apache.mina.core.session.IoSessionInitializer;
38 import org.apache.mina.proxy.filter.ProxyFilter;
39 import org.apache.mina.proxy.handlers.socks.SocksProxyRequest;
40 import org.apache.mina.proxy.session.ProxyIoSession;
41 import org.apache.mina.proxy.session.ProxyIoSessionInitializer;
42 import org.apache.mina.transport.socket.DefaultSocketSessionConfig;
43 import org.apache.mina.transport.socket.SocketConnector;
44 import org.apache.mina.transport.socket.SocketSessionConfig;
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65 public class ProxyConnector extends AbstractIoConnector {
66 private static final TransportMetadata METADATA = new DefaultTransportMetadata("proxy", "proxyconnector", false,
67 true, InetSocketAddress.class, SocketSessionConfig.class, IoBuffer.class, FileRegion.class);
68
69
70
71
72 private SocketConnector connector = null;
73
74
75
76
77 private final ProxyFilter proxyFilter = new ProxyFilter();
78
79
80
81
82 private ProxyIoSession proxyIoSession;
83
84
85
86
87 private DefaultConnectFuture future;
88
89
90
91
92 public ProxyConnector() {
93 super(new DefaultSocketSessionConfig(), null);
94 }
95
96
97
98
99
100
101 public ProxyConnector(final SocketConnector connector) {
102 this(connector, new DefaultSocketSessionConfig(), null);
103 }
104
105
106
107
108
109 public ProxyConnector(final SocketConnector connector, IoSessionConfig config, Executor executor) {
110 super(config, executor);
111 setConnector(connector);
112 }
113
114
115
116
117 public IoSessionConfig getSessionConfig() {
118 return connector.getSessionConfig();
119 }
120
121
122
123
124 public ProxyIoSession getProxyIoSession() {
125 return proxyIoSession;
126 }
127
128
129
130
131
132 public void setProxyIoSession(ProxyIoSession proxyIoSession) {
133 if (proxyIoSession == null) {
134 throw new IllegalArgumentException("proxySession object cannot be null");
135 }
136
137 if (proxyIoSession.getProxyAddress() == null) {
138 throw new IllegalArgumentException("proxySession.proxyAddress cannot be null");
139 }
140
141 proxyIoSession.setConnector(this);
142 setDefaultRemoteAddress(proxyIoSession.getProxyAddress());
143 this.proxyIoSession = proxyIoSession;
144 }
145
146
147
148
149
150
151
152
153
154
155 @SuppressWarnings("unchecked")
156 @Override
157 protected ConnectFuture connect0(final SocketAddress remoteAddress, final SocketAddress localAddress,
158 final IoSessionInitializer<? extends ConnectFuture> sessionInitializer) {
159 if (!proxyIoSession.isReconnectionNeeded()) {
160
161 IoHandler handler = getHandler();
162 if (!(handler instanceof AbstractProxyIoHandler)) {
163 throw new IllegalArgumentException("IoHandler must be an instance of AbstractProxyIoHandler");
164 }
165
166 connector.setHandler(handler);
167 future = new DefaultConnectFuture();
168 }
169
170 ConnectFuture conFuture = connector.connect(proxyIoSession.getProxyAddress(), new ProxyIoSessionInitializer(
171 sessionInitializer, proxyIoSession));
172
173
174
175
176
177
178 if (proxyIoSession.getRequest() instanceof SocksProxyRequest || proxyIoSession.isReconnectionNeeded()) {
179 return conFuture;
180 }
181
182 return future;
183 }
184
185
186
187
188 public void cancelConnectFuture() {
189 future.cancel();
190 }
191
192
193
194
195
196
197
198 protected ConnectFuture fireConnected(final IoSession session) {
199 future.setSession(session);
200 return future;
201 }
202
203
204
205
206
207 public final SocketConnector getConnector() {
208 return connector;
209 }
210
211
212
213
214
215
216
217 private final void setConnector(final SocketConnector connector) {
218 if (connector == null) {
219 throw new IllegalArgumentException("connector cannot be null");
220 }
221
222 this.connector = connector;
223 String className = ProxyFilter.class.getName();
224
225
226 if (connector.getFilterChain().contains(className)) {
227 connector.getFilterChain().remove(className);
228 }
229
230
231 connector.getFilterChain().addFirst(className, proxyFilter);
232 }
233
234
235
236
237 @Override
238 protected void dispose0() throws Exception {
239 if (connector != null) {
240 connector.dispose();
241 }
242 }
243
244
245
246
247 public TransportMetadata getTransportMetadata() {
248 return METADATA;
249 }
250 }