2 * Copyright (c) 1998-2000, Index Data.
3 * See the file LICENSE for details.
5 * $Log: yaz-pdu-assoc.cpp,v $
6 * Revision 1.17 2000-10-11 11:58:16 adam
7 * Moved header files to include/yaz++. Switched to libtool and automake.
8 * Configure script creates yaz++-config script.
10 * Revision 1.16 2000/09/22 09:54:11 heikki
13 * Revision 1.15 2000/09/21 21:43:20 adam
14 * Better high-level server API.
16 * Revision 1.14 2000/09/12 12:09:53 adam
17 * More work on high-level server.
19 * Revision 1.13 2000/09/08 10:23:42 adam
20 * Added skeleton of yaz-z-server.
22 * Revision 1.12 2000/09/06 14:23:45 adam
25 * Revision 1.11 2000/09/04 08:29:22 adam
26 * Fixed memory leak(s). Added re-use of associations, rather than
27 * re-init, when maximum number of targets are in use.
29 * Revision 1.10 2000/08/10 08:42:42 adam
30 * Fixes for {set,get}_APDU_log.
32 * Revision 1.9 1999/12/06 13:52:45 adam
33 * Modified for new location of YAZ header files. Experimental threaded
36 * Revision 1.8 1999/04/28 13:04:03 adam
37 * Fixed setting of proxy otherInfo so that database(s) are removed.
39 * Revision 1.7 1999/04/21 12:09:01 adam
40 * Many improvements. Modified to proxy server to work with "sessions"
43 * Revision 1.6 1999/04/20 10:30:05 adam
44 * Implemented various stuff for client and proxy. Updated calls
45 * to ODR to reflect new name parameter.
47 * Revision 1.5 1999/04/09 11:46:57 adam
48 * Added object Yaz_Z_Assoc. Much more functional client.
50 * Revision 1.4 1999/03/23 14:17:57 adam
51 * More work on timeout handling. Work on yaz-client.
53 * Revision 1.3 1999/02/02 14:01:20 adam
54 * First WIN32 port of YAZ++.
56 * Revision 1.2 1999/01/28 13:08:44 adam
57 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
58 * yaz-socket-manager.cc.
60 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
61 * First implementation of YAZ++.
67 #include <yaz++/yaz-pdu-assoc.h>
70 #include <yaz/tcpip.h>
72 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
76 m_socketObservable = socketObservable;
89 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
91 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
95 void Yaz_PDU_Assoc::socketNotify(int event)
97 logf (m_log, "Yaz_PDU_Assoc::socketNotify p=%p event = %d", this, event);
98 if (0 /* m_state == Connected */)
101 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
102 YAZ_SOCKET_OBSERVE_EXCEPT);
103 m_PDU_Observer->connectNotify();
106 else if (m_state == Connecting)
108 if (event & YAZ_SOCKET_OBSERVE_READ)
111 m_PDU_Observer->failNotify();
113 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
115 m_PDU_Observer->timeoutNotify();
120 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
121 YAZ_SOCKET_OBSERVE_EXCEPT);
122 m_PDU_Observer->connectNotify();
126 else if (m_state == Listen)
128 if (event & YAZ_SOCKET_OBSERVE_READ)
133 if ((res = cs_listen(m_cs, 0, 0)) == 1)
137 logf(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
140 if (!(new_line = cs_accept(m_cs)))
142 /* 1. create socket-manager
144 3. create top-level object
145 setup observer for child fileid in pdu-assoc
148 int fd = cs_fileno(new_line);
149 logf (m_log, "accept ok fd = %d", fd);
150 cs_fileno(new_line) = -1;
155 else if (m_state == Ready)
157 if (event & YAZ_SOCKET_OBSERVE_WRITE)
161 if (event & YAZ_SOCKET_OBSERVE_READ)
165 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
170 logf (m_log, "Connection closed by peer");
172 m_PDU_Observer->failNotify();
175 // lock it, so we know if recv_PDU deletes it.
177 m_destroyed = &destroyed;
179 m_PDU_Observer->recv_PDU(m_input_buf, res);
181 if (destroyed) // it really was destroyed, return now.
183 } while (m_cs && cs_more (m_cs));
185 if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
187 m_PDU_Observer->timeoutNotify();
192 void Yaz_PDU_Assoc::close()
194 m_socketObservable->deleteObserver(this);
198 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
204 PDU_Queue *q_this = m_queue_out;
205 m_queue_out = m_queue_out->m_next;
213 void Yaz_PDU_Assoc::destroy()
220 // delete from parent's child list (if any)
223 c = &m_parent->m_children;
231 // delete all children ...
235 Yaz_PDU_Assoc *here = *c;
242 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
244 m_buf = (char *) malloc (len);
245 memcpy (m_buf, buf, len);
250 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
255 int Yaz_PDU_Assoc::flush_PDU()
259 logf (m_log, "Yaz_PDU_Assoc::flush_PDU");
260 if (m_state != Ready)
262 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
265 PDU_Queue *q = m_queue_out;
268 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
269 YAZ_SOCKET_OBSERVE_EXCEPT);
272 r = cs_put (m_cs, q->m_buf, q->m_len);
276 m_PDU_Observer->failNotify();
281 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
282 YAZ_SOCKET_OBSERVE_EXCEPT|
283 YAZ_SOCKET_OBSERVE_WRITE);
284 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes (incomplete)",
288 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes", q->m_len);
289 // whole packet sent... delete this and proceed to next ...
290 m_queue_out = q->m_next;
292 // don't select on write if queue is empty ...
294 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
295 YAZ_SOCKET_OBSERVE_EXCEPT);
299 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
301 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
302 PDU_Queue **pq = &m_queue_out;
303 int is_idle = (*pq ? 0 : 1);
307 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
312 *pq = new PDU_Queue(buf, len);
316 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
321 COMSTACK Yaz_PDU_Assoc::comstack()
325 CS_TYPE cs_type = tcpip_type;
326 m_cs = cs_create (cs_type, 0, PROTO_Z3950);
331 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
336 COMSTACK cs = comstack();
338 logf (m_log, "Yaz_PDU_Assoc::listen %s", addr);
339 m_PDU_Observer = observer;
342 ap = cs_straddr (cs, addr);
345 if (cs_bind(cs, ap, CS_SERVER) < 0)
347 m_socketObservable->addObserver(cs_fileno(cs), this);
348 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
349 YAZ_SOCKET_OBSERVE_EXCEPT);
350 logf (m_log, "Yaz_PDU_Assoc::listen ok fd=%d", cs_fileno(cs));
354 void Yaz_PDU_Assoc::idleTime(int idleTime)
356 m_idleTime = idleTime;
357 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
358 m_socketObservable->timeoutObserver(this, m_idleTime);
361 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
364 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
366 m_PDU_Observer = observer;
367 COMSTACK cs = comstack();
368 void *ap = cs_straddr (cs, addr);
371 logf (m_log, "cs_straddr failed");
374 int res = cs_connect (cs, ap);
375 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(cs), res);
376 m_socketObservable->addObserver(cs_fileno(cs), this);
377 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
378 YAZ_SOCKET_OBSERVE_EXCEPT|
379 YAZ_SOCKET_OBSERVE_WRITE);
380 m_state = Connecting;
383 void Yaz_PDU_Assoc::socket(IYaz_PDU_Observer *observer, int fd)
386 m_PDU_Observer = observer;
389 CS_TYPE cs_type = tcpip_type;
390 m_cs = cs_createbysocket(fd, cs_type, 0, PROTO_Z3950);
392 m_socketObservable->addObserver(fd, this);
393 m_socketObservable->maskObserver(this,
394 YAZ_SOCKET_OBSERVE_READ|
395 YAZ_SOCKET_OBSERVE_EXCEPT);
396 m_socketObservable->timeoutObserver(this, m_idleTime);
401 // 1 = single-threaded
402 // 0 = multi-threaded
404 // Single-threaded... Only useful for non-blocking handlers
405 void Yaz_PDU_Assoc::childNotify(int fd)
407 // Clone PDU Observable (keep socket manager)
408 IYaz_PDU_Observable *new_observable = clone();
410 // Clone PDU Observer
411 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
413 // Attach new socket to it
414 new_observable->socket(observer, fd);
418 #include <yaz++/yaz-socket-manager.h>
433 Yaz_SocketManager *s = (Yaz_SocketManager *) p;
435 logf (LOG_LOG, "thread started");
436 while (s->processEvent() > 0)
438 logf (LOG_LOG, "thread finished");
445 void Yaz_PDU_Assoc::childNotify(int fd)
447 Yaz_SocketManager *socket_observable = new Yaz_SocketManager;
448 Yaz_PDU_Assoc *new_observable = new Yaz_PDU_Assoc (socket_observable);
450 /// Clone PDU Observer
451 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
453 /// Attach new socket to it
454 new_observable->socket(observer, fd);
458 t_id = _beginthread (events, 0, socket_observable);
461 logf (LOG_FATAL|LOG_ERRNO, "_beginthread failed");
467 int id = pthread_create (&type, 0, events, socket_observable);
468 logf (LOG_LOG, "pthread_create returned id=%d", id);