2 * Copyright (c) 1998-2000, Index Data.
3 * See the file LICENSE for details.
5 * $Log: yaz-pdu-assoc.cpp,v $
6 * Revision 1.19 2000-11-01 14:22:59 adam
7 * Added fd parameter for method IYaz_PDU_Observer::clone.
9 * Revision 1.18 2000/10/24 12:29:57 adam
10 * Fixed bug in proxy where a Yaz_ProxyClient could be owned by
11 * two Yaz_Proxy's (fatal).
13 * Revision 1.17 2000/10/11 11:58:16 adam
14 * Moved header files to include/yaz++. Switched to libtool and automake.
15 * Configure script creates yaz++-config script.
17 * Revision 1.16 2000/09/22 09:54:11 heikki
20 * Revision 1.15 2000/09/21 21:43:20 adam
21 * Better high-level server API.
23 * Revision 1.14 2000/09/12 12:09:53 adam
24 * More work on high-level server.
26 * Revision 1.13 2000/09/08 10:23:42 adam
27 * Added skeleton of yaz-z-server.
29 * Revision 1.12 2000/09/06 14:23:45 adam
32 * Revision 1.11 2000/09/04 08:29:22 adam
33 * Fixed memory leak(s). Added re-use of associations, rather than
34 * re-init, when maximum number of targets are in use.
36 * Revision 1.10 2000/08/10 08:42:42 adam
37 * Fixes for {set,get}_APDU_log.
39 * Revision 1.9 1999/12/06 13:52:45 adam
40 * Modified for new location of YAZ header files. Experimental threaded
43 * Revision 1.8 1999/04/28 13:04:03 adam
44 * Fixed setting of proxy otherInfo so that database(s) are removed.
46 * Revision 1.7 1999/04/21 12:09:01 adam
47 * Many improvements. Modified to proxy server to work with "sessions"
50 * Revision 1.6 1999/04/20 10:30:05 adam
51 * Implemented various stuff for client and proxy. Updated calls
52 * to ODR to reflect new name parameter.
54 * Revision 1.5 1999/04/09 11:46:57 adam
55 * Added object Yaz_Z_Assoc. Much more functional client.
57 * Revision 1.4 1999/03/23 14:17:57 adam
58 * More work on timeout handling. Work on yaz-client.
60 * Revision 1.3 1999/02/02 14:01:20 adam
61 * First WIN32 port of YAZ++.
63 * Revision 1.2 1999/01/28 13:08:44 adam
64 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
65 * yaz-socket-manager.cc.
67 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
68 * First implementation of YAZ++.
74 #include <yaz++/yaz-pdu-assoc.h>
77 #include <yaz/tcpip.h>
79 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
83 m_socketObservable = socketObservable;
96 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
98 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
102 void Yaz_PDU_Assoc::socketNotify(int event)
104 logf (m_log, "Yaz_PDU_Assoc::socketNotify p=%p event = %d", this, event);
105 if (0 /* m_state == Connected */)
108 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
109 YAZ_SOCKET_OBSERVE_EXCEPT);
110 m_PDU_Observer->connectNotify();
113 else if (m_state == Connecting)
115 if (event & YAZ_SOCKET_OBSERVE_READ)
118 m_PDU_Observer->failNotify();
120 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
122 m_PDU_Observer->timeoutNotify();
127 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
128 YAZ_SOCKET_OBSERVE_EXCEPT);
129 m_PDU_Observer->connectNotify();
133 else if (m_state == Listen)
135 if (event & YAZ_SOCKET_OBSERVE_READ)
140 if ((res = cs_listen(m_cs, 0, 0)) == 1)
144 logf(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
147 if (!(new_line = cs_accept(m_cs)))
149 /* 1. create socket-manager
151 3. create top-level object
152 setup observer for child fileid in pdu-assoc
155 int fd = cs_fileno(new_line);
156 logf (m_log, "accept ok fd = %d", fd);
157 cs_fileno(new_line) = -1;
162 else if (m_state == Ready)
164 if (event & YAZ_SOCKET_OBSERVE_WRITE)
168 if (event & YAZ_SOCKET_OBSERVE_READ)
172 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
177 logf (m_log, "Connection closed by peer");
179 m_PDU_Observer->failNotify(); // problem here..
182 // lock it, so we know if recv_PDU deletes it.
184 m_destroyed = &destroyed;
186 m_PDU_Observer->recv_PDU(m_input_buf, res);
188 if (destroyed) // it really was destroyed, return now.
190 } while (m_cs && cs_more (m_cs));
192 if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
194 m_PDU_Observer->timeoutNotify();
199 void Yaz_PDU_Assoc::close()
201 m_socketObservable->deleteObserver(this);
205 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
211 PDU_Queue *q_this = m_queue_out;
212 m_queue_out = m_queue_out->m_next;
220 void Yaz_PDU_Assoc::destroy()
227 // delete from parent's child list (if any)
230 c = &m_parent->m_children;
238 // delete all children ...
242 Yaz_PDU_Assoc *here = *c;
249 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
251 m_buf = (char *) malloc (len);
252 memcpy (m_buf, buf, len);
257 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
262 int Yaz_PDU_Assoc::flush_PDU()
266 logf (m_log, "Yaz_PDU_Assoc::flush_PDU");
267 if (m_state != Ready)
269 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
272 PDU_Queue *q = m_queue_out;
275 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
276 YAZ_SOCKET_OBSERVE_EXCEPT);
279 r = cs_put (m_cs, q->m_buf, q->m_len);
283 m_PDU_Observer->failNotify();
288 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
289 YAZ_SOCKET_OBSERVE_EXCEPT|
290 YAZ_SOCKET_OBSERVE_WRITE);
291 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes (incomplete)",
295 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes", q->m_len);
296 // whole packet sent... delete this and proceed to next ...
297 m_queue_out = q->m_next;
299 // don't select on write if queue is empty ...
301 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
302 YAZ_SOCKET_OBSERVE_EXCEPT);
306 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
308 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
309 PDU_Queue **pq = &m_queue_out;
310 int is_idle = (*pq ? 0 : 1);
314 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
319 *pq = new PDU_Queue(buf, len);
323 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
328 COMSTACK Yaz_PDU_Assoc::comstack()
332 CS_TYPE cs_type = tcpip_type;
333 m_cs = cs_create (cs_type, 0, PROTO_Z3950);
338 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
343 COMSTACK cs = comstack();
345 logf (m_log, "Yaz_PDU_Assoc::listen %s", addr);
346 m_PDU_Observer = observer;
349 ap = cs_straddr (cs, addr);
352 if (cs_bind(cs, ap, CS_SERVER) < 0)
354 m_socketObservable->addObserver(cs_fileno(cs), this);
355 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
356 YAZ_SOCKET_OBSERVE_EXCEPT);
357 logf (m_log, "Yaz_PDU_Assoc::listen ok fd=%d", cs_fileno(cs));
361 void Yaz_PDU_Assoc::idleTime(int idleTime)
363 m_idleTime = idleTime;
364 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
365 m_socketObservable->timeoutObserver(this, m_idleTime);
368 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
371 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
373 m_PDU_Observer = observer;
374 COMSTACK cs = comstack();
375 void *ap = cs_straddr (cs, addr);
378 logf (m_log, "cs_straddr failed");
381 int res = cs_connect (cs, ap);
382 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(cs), res);
383 m_socketObservable->addObserver(cs_fileno(cs), this);
384 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
385 YAZ_SOCKET_OBSERVE_EXCEPT|
386 YAZ_SOCKET_OBSERVE_WRITE);
387 m_state = Connecting;
390 void Yaz_PDU_Assoc::socket(IYaz_PDU_Observer *observer, int fd)
393 m_PDU_Observer = observer;
396 CS_TYPE cs_type = tcpip_type;
397 m_cs = cs_createbysocket(fd, cs_type, 0, PROTO_Z3950);
399 m_socketObservable->addObserver(fd, this);
400 m_socketObservable->maskObserver(this,
401 YAZ_SOCKET_OBSERVE_READ|
402 YAZ_SOCKET_OBSERVE_EXCEPT);
403 m_socketObservable->timeoutObserver(this, m_idleTime);
408 // 1 = single-threaded
409 // 0 = multi-threaded
411 // Single-threaded... Only useful for non-blocking handlers
412 void Yaz_PDU_Assoc::childNotify(int fd)
414 // Clone PDU Observable (keep socket manager)
415 IYaz_PDU_Observable *new_observable = clone();
417 // Clone PDU Observer
418 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable, fd);
420 // Attach new socket to it
421 new_observable->socket(observer, fd);
425 #include <yaz++/yaz-socket-manager.h>
440 Yaz_SocketManager *s = (Yaz_SocketManager *) p;
442 logf (LOG_LOG, "thread started");
443 while (s->processEvent() > 0)
445 logf (LOG_LOG, "thread finished");
452 void Yaz_PDU_Assoc::childNotify(int fd)
454 Yaz_SocketManager *socket_observable = new Yaz_SocketManager;
455 Yaz_PDU_Assoc *new_observable = new Yaz_PDU_Assoc (socket_observable);
457 /// Clone PDU Observer
458 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable, fd);
460 /// Attach new socket to it
461 new_observable->socket(observer, fd);
465 t_id = _beginthread (events, 0, socket_observable);
468 logf (LOG_FATAL|LOG_ERRNO, "_beginthread failed");
474 int id = pthread_create (&type, 0, events, socket_observable);
475 logf (LOG_LOG, "pthread_create returned id=%d", id);