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15 package org.mortbay.jetty.client;
16
17 import java.io.IOException;
18 import java.io.InputStream;
19 import java.io.InterruptedIOException;
20
21 import org.mortbay.io.Buffer;
22 import org.mortbay.io.Buffers;
23 import org.mortbay.io.ByteArrayBuffer;
24 import org.mortbay.io.Connection;
25 import org.mortbay.io.EndPoint;
26 import org.mortbay.io.nio.SelectChannelEndPoint;
27 import org.mortbay.jetty.HttpGenerator;
28 import org.mortbay.jetty.HttpHeaderValues;
29 import org.mortbay.jetty.HttpHeaders;
30 import org.mortbay.jetty.HttpParser;
31 import org.mortbay.jetty.HttpSchemes;
32 import org.mortbay.jetty.HttpVersions;
33 import org.mortbay.jetty.client.security.Authorization;
34 import org.mortbay.jetty.security.SslHttpChannelEndPoint;
35 import org.mortbay.log.Log;
36 import org.mortbay.thread.Timeout;
37
38
39
40
41
42
43 public class HttpConnection implements Connection
44 {
45 HttpDestination _destination;
46 EndPoint _endp;
47 HttpGenerator _generator;
48 HttpParser _parser;
49 boolean _http11 = true;
50 Buffer _connectionHeader;
51 Buffer _requestContentChunk;
52 long _last;
53 boolean _requestComplete;
54 public String _message;
55 public Throwable _throwable;
56 public boolean _reserved;
57
58
59 volatile HttpExchange _exchange;
60 HttpExchange _pipeline;
61
62 public void dump() throws IOException
63 {
64 System.err.println("endp=" + _endp + " " + _endp.isBufferingInput() + " " + _endp.isBufferingOutput());
65 System.err.println("generator=" + _generator);
66 System.err.println("parser=" + _parser.getState() + " " + _parser.isMoreInBuffer());
67 System.err.println("exchange=" + _exchange);
68 if (_endp instanceof SslHttpChannelEndPoint)
69 ((SslHttpChannelEndPoint)_endp).dump();
70 }
71
72 Timeout.Task _timeout = new Timeout.Task()
73 {
74 public void expired()
75 {
76 HttpExchange ex=null;
77 try
78 {
79 synchronized (HttpConnection.this)
80 {
81 ex = _exchange;
82 _exchange = null;
83 if (ex != null)
84 _destination.returnConnection(HttpConnection.this,true);
85 }
86 }
87 catch (Exception e)
88 {
89 Log.debug(e);
90 }
91 finally
92 {
93 try
94 {
95 _endp.close();
96 }
97 catch (IOException e)
98 {
99 Log.ignore(e);
100 }
101
102 if (ex!=null && ex.getStatus() < HttpExchange.STATUS_COMPLETED)
103 {
104 ex.setStatus(HttpExchange.STATUS_EXPIRED);
105 }
106 }
107 }
108 };
109
110
111 HttpConnection(Buffers buffers, EndPoint endp, int hbs, int cbs)
112 {
113 _endp = endp;
114 _generator = new HttpGenerator(buffers,endp,hbs,cbs);
115 _parser = new HttpParser(buffers,endp,new Handler(),hbs,cbs);
116 }
117
118 public void setReserved (boolean reserved)
119 {
120 _reserved = reserved;
121 }
122
123 public boolean isReserved()
124 {
125 return _reserved;
126 }
127
128
129 public HttpDestination getDestination()
130 {
131 return _destination;
132 }
133
134
135 public void setDestination(HttpDestination destination)
136 {
137 _destination = destination;
138 }
139
140
141 public boolean send(HttpExchange ex) throws IOException
142 {
143
144
145
146 _throwable = new Throwable();
147 synchronized (this)
148 {
149 if (_exchange != null)
150 {
151 if (_pipeline != null)
152 throw new IllegalStateException(this + " PIPELINED!!! _exchange=" + _exchange);
153 _pipeline = ex;
154 return true;
155 }
156
157 if (!_endp.isOpen())
158 return false;
159
160 ex.setStatus(HttpExchange.STATUS_WAITING_FOR_COMMIT);
161 _exchange = ex;
162
163 if (_endp.isBlocking())
164 this.notify();
165 else
166 {
167 SelectChannelEndPoint scep = (SelectChannelEndPoint)_endp;
168 scep.scheduleWrite();
169 }
170
171 if (!_endp.isBlocking())
172 _destination.getHttpClient().schedule(_timeout);
173
174 return true;
175 }
176 }
177
178
179 public void handle() throws IOException
180 {
181 int no_progress = 0;
182 long flushed = 0;
183
184 boolean failed = false;
185 while (_endp.isBufferingInput() || _endp.isOpen())
186 {
187 synchronized (this)
188 {
189 while (_exchange == null)
190 {
191 if (_endp.isBlocking())
192 {
193 try
194 {
195 this.wait();
196 }
197 catch (InterruptedException e)
198 {
199 throw new InterruptedIOException();
200 }
201 }
202 else
203 {
204
205 _parser.fill();
206 _parser.skipCRLF();
207 if (_parser.isMoreInBuffer())
208 {
209 Log.warn("unexpected data");
210 _endp.close();
211 }
212
213 return;
214 }
215 }
216 }
217 if (_exchange.getStatus() == HttpExchange.STATUS_WAITING_FOR_COMMIT)
218 {
219 no_progress = 0;
220 commitRequest();
221 }
222
223 try
224 {
225 long io = 0;
226 _endp.flush();
227
228 if (_generator.isComplete())
229 {
230 if (!_requestComplete)
231 {
232 _requestComplete = true;
233 _exchange.getEventListener().onRequestComplete();
234 }
235 }
236 else
237 {
238
239 synchronized (this)
240 {
241 if (_exchange == null)
242 continue;
243 flushed = _generator.flush();
244 io += flushed;
245 }
246
247 if (!_generator.isComplete())
248 {
249 InputStream in = _exchange.getRequestContentSource();
250 if (in != null)
251 {
252 if (_requestContentChunk == null || _requestContentChunk.length() == 0)
253 {
254 _requestContentChunk = _exchange.getRequestContentChunk();
255 if (_requestContentChunk != null)
256 _generator.addContent(_requestContentChunk,false);
257 else
258 _generator.complete();
259 io += _generator.flush();
260 }
261 }
262 else
263 _generator.complete();
264 }
265 }
266
267
268
269 if (!_parser.isComplete() && _generator.isCommitted())
270 {
271 long filled = _parser.parseAvailable();
272 io += filled;
273 }
274
275 if (io > 0)
276 no_progress = 0;
277 else if (no_progress++ >= 2 && !_endp.isBlocking())
278 {
279
280 if (_endp instanceof SslHttpChannelEndPoint && !_generator.isComplete() && !_generator.isEmpty())
281 {
282 if (_generator.flush()>0)
283 continue;
284 }
285 return;
286 }
287 }
288 catch (IOException e)
289 {
290 synchronized (this)
291 {
292 if (_exchange != null)
293 {
294 _exchange.getEventListener().onException(e);
295 _exchange.setStatus(HttpExchange.STATUS_EXCEPTED);
296 }
297 }
298 failed = true;
299 throw e;
300 }
301 finally
302 {
303 boolean complete = false;
304 boolean close = failed;
305 if (!failed)
306 {
307
308 if (_generator.isComplete())
309 {
310 if (!_requestComplete)
311 {
312 _requestComplete = true;
313 _exchange.getEventListener().onRequestComplete();
314 }
315
316
317
318 if (_parser.isComplete())
319 {
320 _destination.getHttpClient().cancel(_timeout);
321 complete = true;
322 }
323 }
324 }
325
326 if (complete || failed)
327 {
328 synchronized (this)
329 {
330 if (!close)
331 close = shouldClose();
332
333 reset(true);
334 no_progress = 0;
335 flushed = -1;
336 if (_exchange != null)
337 {
338 _exchange = null;
339
340 if (_pipeline == null)
341 {
342 if (!isReserved())
343 _destination.returnConnection(this,close);
344 if (close)
345 return;
346 }
347 else
348 {
349 if (close)
350 {
351 if (!isReserved())
352 _destination.returnConnection(this,close);
353 _destination.send(_pipeline);
354 _pipeline = null;
355 return;
356 }
357
358 HttpExchange ex = _pipeline;
359 _pipeline = null;
360
361 send(ex);
362 }
363 }
364 }
365 }
366 }
367 }
368 }
369
370
371 public boolean isIdle()
372 {
373 synchronized (this)
374 {
375 return _exchange == null;
376 }
377 }
378
379
380 public EndPoint getEndPoint()
381 {
382 return _endp;
383 }
384
385
386 private void commitRequest() throws IOException
387 {
388 synchronized (this)
389 {
390 if (_exchange.getStatus() != HttpExchange.STATUS_WAITING_FOR_COMMIT)
391 throw new IllegalStateException();
392
393 _exchange.setStatus(HttpExchange.STATUS_SENDING_REQUEST);
394 _generator.setVersion(_exchange._version);
395
396 String uri = _exchange._uri;
397 if (_destination.isProxied() && uri.startsWith("/"))
398 {
399
400 uri = (_destination.isSecure()?HttpSchemes.HTTPS:HttpSchemes.HTTP) + "://" + _destination.getAddress().getHost() + ":"
401 + _destination.getAddress().getPort() + uri;
402 Authorization auth = _destination.getProxyAuthentication();
403 if (auth != null)
404 auth.setCredentials(_exchange);
405 }
406
407 _generator.setRequest(_exchange._method,uri);
408
409 if (_exchange._version >= HttpVersions.HTTP_1_1_ORDINAL)
410 {
411 if (!_exchange._requestFields.containsKey(HttpHeaders.HOST_BUFFER))
412 _exchange._requestFields.add(HttpHeaders.HOST_BUFFER,_destination.getHostHeader());
413 }
414
415 if (_exchange._requestContent != null)
416 {
417 _exchange._requestFields.putLongField(HttpHeaders.CONTENT_LENGTH,_exchange._requestContent.length());
418 _generator.completeHeader(_exchange._requestFields,false);
419 _generator.addContent(_exchange._requestContent,true);
420 }
421 else if (_exchange._requestContentSource != null)
422 {
423 _generator.completeHeader(_exchange._requestFields,false);
424 int available = _exchange._requestContentSource.available();
425 if (available > 0)
426 {
427
428
429
430 byte[] buf = new byte[available];
431 int length = _exchange._requestContentSource.read(buf);
432 _generator.addContent(new ByteArrayBuffer(buf,0,length),false);
433 }
434 }
435 else
436 {
437 _exchange._requestFields.remove(HttpHeaders.CONTENT_LENGTH);
438
439
440
441
442
443 _generator.completeHeader(_exchange._requestFields,true);
444 }
445
446 _exchange.setStatus(HttpExchange.STATUS_WAITING_FOR_RESPONSE);
447 }
448 }
449
450
451 protected void reset(boolean returnBuffers) throws IOException
452 {
453 _requestComplete = false;
454 _connectionHeader = null;
455 _parser.reset(returnBuffers);
456 _generator.reset(returnBuffers);
457 _http11 = true;
458 }
459
460
461 private boolean shouldClose()
462 {
463 if (_connectionHeader!=null)
464 {
465 if (HttpHeaderValues.CLOSE_BUFFER.equals(_connectionHeader))
466 return true;
467 if (HttpHeaderValues.KEEP_ALIVE_BUFFER.equals(_connectionHeader))
468 return false;
469 }
470 return !_http11;
471 }
472
473
474 private class Handler extends HttpParser.EventHandler
475 {
476 @Override
477 public void startRequest(Buffer method, Buffer url, Buffer version) throws IOException
478 {
479
480
481
482
483
484 }
485
486 @Override
487 public void startResponse(Buffer version, int status, Buffer reason) throws IOException
488 {
489 HttpExchange exchange = _exchange;
490 if (exchange!=null)
491 {
492 _http11 = HttpVersions.HTTP_1_1_BUFFER.equals(version);
493 exchange.getEventListener().onResponseStatus(version,status,reason);
494 exchange.setStatus(HttpExchange.STATUS_PARSING_HEADERS);
495 }
496 }
497
498 @Override
499 public void parsedHeader(Buffer name, Buffer value) throws IOException
500 {
501 HttpExchange exchange = _exchange;
502 if (exchange!=null)
503 {
504 if (HttpHeaders.CACHE.getOrdinal(name) == HttpHeaders.CONNECTION_ORDINAL)
505 {
506 _connectionHeader = HttpHeaderValues.CACHE.lookup(value);
507 }
508 exchange.getEventListener().onResponseHeader(name,value);
509 }
510 }
511
512 @Override
513 public void headerComplete() throws IOException
514 {
515 HttpExchange exchange = _exchange;
516 if (exchange!=null)
517 exchange.setStatus(HttpExchange.STATUS_PARSING_CONTENT);
518 }
519
520 @Override
521 public void content(Buffer ref) throws IOException
522 {
523 HttpExchange exchange = _exchange;
524 if (exchange!=null)
525 exchange.getEventListener().onResponseContent(ref);
526 }
527
528 @Override
529 public void messageComplete(long contextLength) throws IOException
530 {
531 HttpExchange exchange = _exchange;
532 if (exchange!=null)
533 exchange.setStatus(HttpExchange.STATUS_COMPLETED);
534 }
535 }
536
537
538 public String toString()
539 {
540 return "HttpConnection@" + hashCode() + "//" + _destination.getAddress().getHost() + ":" + _destination.getAddress().getPort();
541 }
542
543
544 public String toDetailString()
545 {
546 return toString() + " ex=" + _exchange + " " + _timeout.getAge();
547 }
548
549
550
551
552
553 public long getLast()
554 {
555 return _last;
556 }
557
558
559
560
561
562
563 public void setLast(long last)
564 {
565 _last = last;
566 }
567
568
569 public void close() throws IOException
570 {
571 _endp.close();
572 }
573
574 }