2 * Copyright (c) 1998-2001, Index Data.
3 * See the file LICENSE for details.
5 * $Log: yaz-pdu-assoc.cpp,v $
6 * Revision 1.23 2001-03-26 14:43:49 adam
7 * New threaded PDU association.
9 * Revision 1.22 2001/01/29 11:18:24 adam
10 * Server sets OPTIONS search and present.
12 * Revision 1.21 2000/11/20 14:17:36 adam
13 * Yet another WIN32 fix for connect notify.
15 * Revision 1.20 2000/11/20 11:27:33 adam
16 * Fixes for connect operation (timeout and notify fix).
18 * Revision 1.19 2000/11/01 14:22:59 adam
19 * Added fd parameter for method IYaz_PDU_Observer::clone.
21 * Revision 1.18 2000/10/24 12:29:57 adam
22 * Fixed bug in proxy where a Yaz_ProxyClient could be owned by
23 * two Yaz_Proxy's (fatal).
25 * Revision 1.17 2000/10/11 11:58:16 adam
26 * Moved header files to include/yaz++. Switched to libtool and automake.
27 * Configure script creates yaz++-config script.
29 * Revision 1.16 2000/09/22 09:54:11 heikki
32 * Revision 1.15 2000/09/21 21:43:20 adam
33 * Better high-level server API.
35 * Revision 1.14 2000/09/12 12:09:53 adam
36 * More work on high-level server.
38 * Revision 1.13 2000/09/08 10:23:42 adam
39 * Added skeleton of yaz-z-server.
41 * Revision 1.12 2000/09/06 14:23:45 adam
44 * Revision 1.11 2000/09/04 08:29:22 adam
45 * Fixed memory leak(s). Added re-use of associations, rather than
46 * re-init, when maximum number of targets are in use.
48 * Revision 1.10 2000/08/10 08:42:42 adam
49 * Fixes for {set,get}_APDU_log.
51 * Revision 1.9 1999/12/06 13:52:45 adam
52 * Modified for new location of YAZ header files. Experimental threaded
55 * Revision 1.8 1999/04/28 13:04:03 adam
56 * Fixed setting of proxy otherInfo so that database(s) are removed.
58 * Revision 1.7 1999/04/21 12:09:01 adam
59 * Many improvements. Modified to proxy server to work with "sessions"
62 * Revision 1.6 1999/04/20 10:30:05 adam
63 * Implemented various stuff for client and proxy. Updated calls
64 * to ODR to reflect new name parameter.
66 * Revision 1.5 1999/04/09 11:46:57 adam
67 * Added object Yaz_Z_Assoc. Much more functional client.
69 * Revision 1.4 1999/03/23 14:17:57 adam
70 * More work on timeout handling. Work on yaz-client.
72 * Revision 1.3 1999/02/02 14:01:20 adam
73 * First WIN32 port of YAZ++.
75 * Revision 1.2 1999/01/28 13:08:44 adam
76 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
77 * yaz-socket-manager.cc.
79 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
80 * First implementation of YAZ++.
87 #include <yaz/tcpip.h>
89 #include <yaz++/yaz-pdu-assoc.h>
92 void Yaz_PDU_Assoc::init(IYazSocketObservable *socketObservable)
96 m_socketObservable = socketObservable;
109 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
111 init (socketObservable);
114 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable,
117 init(socketObservable);
120 if (cs->io_pending & CS_WANT_WRITE)
121 mask |= YAZ_SOCKET_OBSERVE_WRITE;
122 if (cs->io_pending & CS_WANT_READ)
123 mask |= YAZ_SOCKET_OBSERVE_READ;
124 m_socketObservable->addObserver(cs_fileno(cs), this);
127 yaz_log (m_log, "new PDU_Assoc. Ready");
133 yaz_log (m_log, "new PDU_Assoc. Accepting");
134 // assume comstack is accepting...
136 m_socketObservable->addObserver(cs_fileno(cs), this);
137 m_socketObservable->maskObserver(this,
138 mask |YAZ_SOCKET_OBSERVE_EXCEPT);
143 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
145 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
149 void Yaz_PDU_Assoc::socketNotify(int event)
151 yaz_log (m_log, "Yaz_PDU_Assoc::socketNotify p=%p state=%d event = %d",
152 this, m_state, event);
153 if (event & YAZ_SOCKET_OBSERVE_EXCEPT)
156 m_PDU_Observer->failNotify();
159 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
161 m_PDU_Observer->timeoutNotify();
167 if (!cs_accept (m_cs))
169 yaz_log (m_log, "Yaz_PDU_Assoc::cs_accept failed");
172 m_PDU_Observer->failNotify();
177 if (m_cs->io_pending & CS_WANT_WRITE)
178 mask |= YAZ_SOCKET_OBSERVE_WRITE;
179 if (m_cs->io_pending & CS_WANT_READ)
180 mask |= YAZ_SOCKET_OBSERVE_READ;
182 { // accept is complete. turn to ready state and write if needed
187 { // accept still incomplete.
188 m_socketObservable->maskObserver(this,
189 mask|YAZ_SOCKET_OBSERVE_EXCEPT);
194 if (event & YAZ_SOCKET_OBSERVE_READ &&
195 event & YAZ_SOCKET_OBSERVE_WRITE)
197 // For Unix: if both read and write is set, then connect failed.
199 m_PDU_Observer->failNotify();
203 yaz_log (m_log, "cs_connect again");
204 int res = cs_connect (m_cs, 0);
207 unsigned mask = YAZ_SOCKET_OBSERVE_EXCEPT;
208 if (m_cs->io_pending & CS_WANT_WRITE)
209 mask |= YAZ_SOCKET_OBSERVE_WRITE;
210 if (m_cs->io_pending & CS_WANT_READ)
211 mask |= YAZ_SOCKET_OBSERVE_READ;
212 m_socketObservable->maskObserver(this, mask);
217 m_PDU_Observer->connectNotify();
223 if (event & YAZ_SOCKET_OBSERVE_READ)
228 if ((res = cs_listen(m_cs, 0, 0)) == 1)
232 yaz_log(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
235 if (!(new_line = cs_accept(m_cs)))
237 /* 1. create socket-manager
239 3. create top-level object
240 setup observer for child fileid in pdu-assoc
243 childNotify (new_line);
247 if (event & (YAZ_SOCKET_OBSERVE_READ|YAZ_SOCKET_OBSERVE_WRITE))
251 if (event & (YAZ_SOCKET_OBSERVE_READ|YAZ_SOCKET_OBSERVE_WRITE))
255 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
258 unsigned mask = YAZ_SOCKET_OBSERVE_EXCEPT;
259 if (m_cs->io_pending & CS_WANT_WRITE)
260 mask |= YAZ_SOCKET_OBSERVE_WRITE;
261 if (m_cs->io_pending & CS_WANT_READ)
262 mask |= YAZ_SOCKET_OBSERVE_READ;
263 m_socketObservable->maskObserver(this, mask);
268 yaz_log (m_log, "Yaz_PDU_Assoc::Connection closed by peer");
270 m_PDU_Observer->failNotify(); // problem here..
273 // lock it, so we know if recv_PDU deletes it.
275 m_destroyed = &destroyed;
277 m_PDU_Observer->recv_PDU(m_input_buf, res);
279 if (destroyed) // it really was destroyed, return now.
281 } while (m_cs && cs_more (m_cs));
283 m_socketObservable->maskObserver(this,
284 YAZ_SOCKET_OBSERVE_EXCEPT|
285 YAZ_SOCKET_OBSERVE_READ);
289 logf (m_log, "CLOSING state=%d event was %d", m_state, event);
291 m_PDU_Observer->failNotify();
294 logf (m_log, "Unknown state=%d event was %d", m_state, event);
296 m_PDU_Observer->failNotify();
300 void Yaz_PDU_Assoc::close()
302 m_socketObservable->deleteObserver(this);
306 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
312 PDU_Queue *q_this = m_queue_out;
313 m_queue_out = m_queue_out->m_next;
321 void Yaz_PDU_Assoc::destroy()
328 // delete from parent's child list (if any)
331 c = &m_parent->m_children;
339 // delete all children ...
343 Yaz_PDU_Assoc *here = *c;
350 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
352 m_buf = (char *) malloc (len);
353 memcpy (m_buf, buf, len);
358 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
363 int Yaz_PDU_Assoc::flush_PDU()
367 if (m_state != Ready && m_state != Writing)
369 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
372 PDU_Queue *q = m_queue_out;
376 logf (m_log, "YAZ_PDU_Assoc::flush_PDU queue empty");
377 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
378 YAZ_SOCKET_OBSERVE_WRITE|
379 YAZ_SOCKET_OBSERVE_EXCEPT);
382 r = cs_put (m_cs, q->m_buf, q->m_len);
385 logf (m_log, "Yaz_PDU_Assoc::flush_PDU cs_put failed");
387 m_PDU_Observer->failNotify();
392 unsigned mask = YAZ_SOCKET_OBSERVE_EXCEPT;
394 if (m_cs->io_pending & CS_WANT_WRITE)
395 mask |= YAZ_SOCKET_OBSERVE_WRITE;
396 if (m_cs->io_pending & CS_WANT_READ)
397 mask |= YAZ_SOCKET_OBSERVE_READ;
399 m_socketObservable->maskObserver(this, mask);
400 logf (m_log, "Yaz_PDU_Assoc::flush_PDU cs_put %d bytes (incomplete)",
405 logf (m_log, "Yaz_PDU_Assoc::flush_PDU cs_put %d bytes", q->m_len);
406 // whole packet sent... delete this and proceed to next ...
407 m_queue_out = q->m_next;
409 // don't select on write if queue is empty ...
411 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
412 YAZ_SOCKET_OBSERVE_EXCEPT);
416 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
418 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
419 PDU_Queue **pq = &m_queue_out;
420 int is_idle = (*pq ? 0 : 1);
424 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
429 *pq = new PDU_Queue(buf, len);
433 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
438 COMSTACK Yaz_PDU_Assoc::comstack(const char *type_and_host, void **vp)
440 return cs_create_host(type_and_host, 0, vp);
443 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
448 logf (LOG_LOG, "Adding listener %s", addr);
450 m_PDU_Observer = observer;
452 m_cs = comstack(addr, &ap);
456 if (cs_bind(m_cs, ap, CS_SERVER) < 0)
458 m_socketObservable->addObserver(cs_fileno(m_cs), this);
459 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
460 YAZ_SOCKET_OBSERVE_EXCEPT);
461 logf (m_log, "Yaz_PDU_Assoc::listen ok fd=%d", cs_fileno(m_cs));
465 void Yaz_PDU_Assoc::idleTime(int idleTime)
467 m_idleTime = idleTime;
468 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
469 m_socketObservable->timeoutObserver(this, m_idleTime);
472 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
475 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
477 m_PDU_Observer = observer;
479 m_cs = comstack(addr, &ap);
480 int res = cs_connect (m_cs, ap);
481 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(m_cs), res);
482 m_socketObservable->addObserver(cs_fileno(m_cs), this);
485 { // Connect pending or complet
486 m_state = Connecting;
487 unsigned mask = YAZ_SOCKET_OBSERVE_EXCEPT;
488 if (m_cs->io_pending & CS_WANT_WRITE)
489 mask |= YAZ_SOCKET_OBSERVE_WRITE;
490 if (m_cs->io_pending & CS_WANT_READ)
491 mask |= YAZ_SOCKET_OBSERVE_READ;
492 m_socketObservable->maskObserver(this, mask);
495 { // Connect failed immediately
496 // Since m_state is Closed we can distinguish this case from
497 // normal connect in socketNotify handler
498 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_WRITE|
499 YAZ_SOCKET_OBSERVE_EXCEPT);
503 // Single-threaded... Only useful for non-blocking handlers
504 void Yaz_PDU_Assoc::childNotify(COMSTACK cs)
506 Yaz_PDU_Assoc *new_observable =
507 new Yaz_PDU_Assoc (m_socketObservable, cs);
509 // Clone PDU Observer
510 new_observable->m_PDU_Observer = m_PDU_Observer->sessionNotify
511 (new_observable, cs_fileno(cs));