2 * Copyright (c) 1998-2000, Index Data.
3 * See the file LICENSE for details.
5 * $Log: yaz-pdu-assoc.cpp,v $
6 * Revision 1.15 2000-09-21 21:43:20 adam
7 * Better high-level server API.
9 * Revision 1.14 2000/09/12 12:09:53 adam
10 * More work on high-level server.
12 * Revision 1.13 2000/09/08 10:23:42 adam
13 * Added skeleton of yaz-z-server.
15 * Revision 1.12 2000/09/06 14:23:45 adam
18 * Revision 1.11 2000/09/04 08:29:22 adam
19 * Fixed memory leak(s). Added re-use of associations, rather than
20 * re-init, when maximum number of targets are in use.
22 * Revision 1.10 2000/08/10 08:42:42 adam
23 * Fixes for {set,get}_APDU_log.
25 * Revision 1.9 1999/12/06 13:52:45 adam
26 * Modified for new location of YAZ header files. Experimental threaded
29 * Revision 1.8 1999/04/28 13:04:03 adam
30 * Fixed setting of proxy otherInfo so that database(s) are removed.
32 * Revision 1.7 1999/04/21 12:09:01 adam
33 * Many improvements. Modified to proxy server to work with "sessions"
36 * Revision 1.6 1999/04/20 10:30:05 adam
37 * Implemented various stuff for client and proxy. Updated calls
38 * to ODR to reflect new name parameter.
40 * Revision 1.5 1999/04/09 11:46:57 adam
41 * Added object Yaz_Z_Assoc. Much more functional client.
43 * Revision 1.4 1999/03/23 14:17:57 adam
44 * More work on timeout handling. Work on yaz-client.
46 * Revision 1.3 1999/02/02 14:01:20 adam
47 * First WIN32 port of YAZ++.
49 * Revision 1.2 1999/01/28 13:08:44 adam
50 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
51 * yaz-socket-manager.cc.
53 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
54 * First implementation of YAZ++.
60 #include <yaz-pdu-assoc.h>
63 #include <yaz/tcpip.h>
65 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
69 m_socketObservable = socketObservable;
82 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
84 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
88 void Yaz_PDU_Assoc::socketNotify(int event)
90 logf (m_log, "Yaz_PDU_Assoc::socketNotify p=%p event = %d", this, event);
91 if (0 /* m_state == Connected */)
94 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
95 YAZ_SOCKET_OBSERVE_EXCEPT);
96 m_PDU_Observer->connectNotify();
99 else if (m_state == Connecting)
101 if (event & YAZ_SOCKET_OBSERVE_READ)
104 m_PDU_Observer->failNotify();
106 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
108 m_PDU_Observer->timeoutNotify();
113 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
114 YAZ_SOCKET_OBSERVE_EXCEPT);
115 m_PDU_Observer->connectNotify();
119 else if (m_state == Listen)
121 if (event & YAZ_SOCKET_OBSERVE_READ)
126 if ((res = cs_listen(m_cs, 0, 0)) == 1)
130 logf(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
133 if (!(new_line = cs_accept(m_cs)))
135 /* 1. create socket-manager
137 3. create top-level object
138 setup observer for child fileid in pdu-assoc
141 int fd = cs_fileno(new_line);
142 logf (m_log, "accept ok fd = %d", fd);
143 cs_fileno(new_line) = -1;
148 else if (m_state == Ready)
150 if (event & YAZ_SOCKET_OBSERVE_WRITE)
154 if (event & YAZ_SOCKET_OBSERVE_READ)
158 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
163 logf (m_log, "Connection closed by peer");
165 m_PDU_Observer->failNotify();
168 // lock it, so we know if recv_PDU deletes it.
170 m_destroyed = &destroyed;
172 m_PDU_Observer->recv_PDU(m_input_buf, res);
174 if (destroyed) // it really was destroyed, return now.
176 } while (m_cs && cs_more (m_cs));
178 if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
180 m_PDU_Observer->timeoutNotify();
185 void Yaz_PDU_Assoc::close()
187 m_socketObservable->deleteObserver(this);
191 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
197 PDU_Queue *q_this = m_queue_out;
198 m_queue_out = m_queue_out->m_next;
206 void Yaz_PDU_Assoc::destroy()
213 // delete from parent's child list (if any)
216 c = &m_parent->m_children;
224 // delete all children ...
228 Yaz_PDU_Assoc *here = *c;
235 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
237 m_buf = (char *) malloc (len);
238 memcpy (m_buf, buf, len);
243 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
248 int Yaz_PDU_Assoc::flush_PDU()
252 logf (m_log, "Yaz_PDU_Assoc::flush_PDU");
253 if (m_state != Ready)
255 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
258 PDU_Queue *q = m_queue_out;
261 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
262 YAZ_SOCKET_OBSERVE_EXCEPT);
265 r = cs_put (m_cs, q->m_buf, q->m_len);
269 m_PDU_Observer->failNotify();
274 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
275 YAZ_SOCKET_OBSERVE_EXCEPT|
276 YAZ_SOCKET_OBSERVE_WRITE);
277 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes (incomplete)",
281 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes", q->m_len);
282 // whole packet sent... delete this and proceed to next ...
283 m_queue_out = q->m_next;
285 // don't select on write if queue is empty ...
287 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
288 YAZ_SOCKET_OBSERVE_EXCEPT);
292 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
294 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
295 PDU_Queue **pq = &m_queue_out;
296 int is_idle = (*pq ? 0 : 1);
300 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
305 *pq = new PDU_Queue(buf, len);
309 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
314 COMSTACK Yaz_PDU_Assoc::comstack()
318 CS_TYPE cs_type = tcpip_type;
319 m_cs = cs_create (cs_type, 0, PROTO_Z3950);
324 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
329 COMSTACK cs = comstack();
331 logf (m_log, "Yaz_PDU_Assoc::listen %s", addr);
332 m_PDU_Observer = observer;
335 ap = cs_straddr (cs, addr);
338 if (cs_bind(cs, ap, CS_SERVER) < 0)
340 m_socketObservable->addObserver(cs_fileno(cs), this);
341 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
342 YAZ_SOCKET_OBSERVE_EXCEPT);
343 logf (m_log, "Yaz_PDU_Assoc::listen ok fd=%d", cs_fileno(cs));
347 void Yaz_PDU_Assoc::idleTime(int idleTime)
349 m_idleTime = idleTime;
350 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
351 m_socketObservable->timeoutObserver(this, m_idleTime);
354 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
357 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
359 m_PDU_Observer = observer;
360 COMSTACK cs = comstack();
361 void *ap = cs_straddr (cs, addr);
364 logf (m_log, "cs_straddr failed");
367 int res = cs_connect (cs, ap);
368 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(cs), res);
369 m_socketObservable->addObserver(cs_fileno(cs), this);
370 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
371 YAZ_SOCKET_OBSERVE_EXCEPT|
372 YAZ_SOCKET_OBSERVE_WRITE);
373 m_state = Connecting;
376 void Yaz_PDU_Assoc::socket(IYaz_PDU_Observer *observer, int fd)
379 m_PDU_Observer = observer;
382 CS_TYPE cs_type = tcpip_type;
383 m_cs = cs_createbysocket(fd, cs_type, 0, PROTO_Z3950);
385 m_socketObservable->addObserver(fd, this);
386 m_socketObservable->maskObserver(this,
387 YAZ_SOCKET_OBSERVE_READ|
388 YAZ_SOCKET_OBSERVE_EXCEPT);
389 m_socketObservable->timeoutObserver(this, m_idleTime);
395 // Single-threaded... Only useful for non-blocking handlers
396 void Yaz_PDU_Assoc::childNotify(int fd)
398 // Clone PDU Observable (keep socket manager)
399 IYaz_PDU_Observable *new_observable = clone();
401 // Clone PDU Observer
402 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
404 // Attach new socket to it
405 new_observable->socket(observer, fd);
409 #include <yaz-socket-manager.h>
424 Yaz_SocketManager *s = (Yaz_SocketManager *) p;
426 logf (LOG_LOG, "thread started");
427 while (s->processEvent() > 0)
429 logf (LOG_LOG, "thread finished");
436 void Yaz_PDU_Assoc::childNotify(int fd)
438 Yaz_SocketManager *socket_observable = new Yaz_SocketManager;
439 Yaz_PDU_Assoc *new_observable = new Yaz_PDU_Assoc (socket_observable);
441 /// Clone PDU Observer
442 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
444 /// Attach new socket to it
445 new_observable->socket(observer, fd);
449 t_id = _beginthread (events, 0, socket_observable);
452 logf (LOG_FATAL|LOG_ERRNO, "_beginthread failed");
458 int id = pthread_create (&type, 0, events, socket_observable);
459 logf (LOG_LOG, "pthread_create returned id=%d", id);