2 * Copyright (c) 1998-2003, Index Data.
3 * See the file LICENSE for details.
5 * $Id: yaz-proxy.cpp,v 1.48 2003-10-01 13:13:51 adam Exp $
12 #include <yaz/diagbib1.h>
13 #include <yaz++/proxy.h>
15 static const char *apdu_name(Z_APDU *apdu)
19 case Z_APDU_initRequest:
21 case Z_APDU_initResponse:
22 return "initResponse";
23 case Z_APDU_searchRequest:
24 return "searchRequest";
25 case Z_APDU_searchResponse:
26 return "searchResponse";
27 case Z_APDU_presentRequest:
28 return "presentRequest";
29 case Z_APDU_presentResponse:
30 return "presentResponse";
31 case Z_APDU_deleteResultSetRequest:
32 return "deleteResultSetRequest";
33 case Z_APDU_deleteResultSetResponse:
34 return "deleteResultSetResponse";
35 case Z_APDU_scanRequest:
37 case Z_APDU_scanResponse:
38 return "scanResponse";
39 case Z_APDU_sortRequest:
41 case Z_APDU_sortResponse:
42 return "sortResponse";
43 case Z_APDU_extendedServicesRequest:
44 return "extendedServicesRequest";
45 case Z_APDU_extendedServicesResponse:
46 return "extendedServicesResponse";
54 Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable) :
55 Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
57 m_PDU_Observable = the_PDU_Observable;
65 m_proxy_authentication = 0;
68 m_client_idletime = 600;
69 m_target_idletime = 600;
70 m_optimize = xstrdup ("1");
71 strcpy(m_session_str, "x");
73 m_bytes_sent = m_bytes_recv = 0;
77 m_max_record_retrieve = 0;
80 Yaz_Proxy::~Yaz_Proxy()
82 yaz_log(LOG_LOG, "%s Closed %d/%d sent/recv bytes total", m_session_str,
83 m_bytes_sent, m_bytes_recv);
84 xfree (m_proxyTarget);
85 xfree (m_default_target);
86 xfree (m_proxy_authentication);
90 int Yaz_Proxy::set_config(const char *config)
92 int r = m_config.read_xml(config);
96 void Yaz_Proxy::set_default_target(const char *target)
98 xfree (m_default_target);
101 m_default_target = (char *) xstrdup (target);
104 void Yaz_Proxy::set_proxy_authentication (const char *auth)
106 xfree (m_proxy_authentication);
107 m_proxy_authentication = 0;
109 m_proxy_authentication = (char *) xstrdup (auth);
112 IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
113 *the_PDU_Observable, int fd)
115 Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable);
116 new_proxy->m_parent = this;
117 new_proxy->m_config = m_config;
118 new_proxy->timeout(m_client_idletime);
119 new_proxy->m_target_idletime = m_target_idletime;
120 new_proxy->set_default_target(m_default_target);
121 new_proxy->set_APDU_log(get_APDU_log());
122 new_proxy->set_proxy_authentication(m_proxy_authentication);
123 sprintf(new_proxy->m_session_str, "%ld:%d", (long) time(0), m_session_no);
125 yaz_log (LOG_LOG, "%s New session %s", new_proxy->m_session_str,
126 the_PDU_Observable->getpeername());
130 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
133 Z_OtherInformationUnit *oi;
135 ent.proto = PROTO_Z3950;
136 ent.oclass = CLASS_USERINFO;
137 ent.value = (oid_value) VAL_COOKIE;
138 assert (oid_ent_to_oid (&ent, oid));
140 if (oid_ent_to_oid (&ent, oid) &&
141 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
142 oi->which == Z_OtherInfo_characterInfo)
143 return oi->information.characterInfo;
147 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
150 Z_OtherInformationUnit *oi;
152 ent.proto = PROTO_Z3950;
153 ent.oclass = CLASS_USERINFO;
154 ent.value = (oid_value) VAL_PROXY;
155 if (oid_ent_to_oid (&ent, oid) &&
156 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
157 oi->which == Z_OtherInfo_characterInfo)
158 return oi->information.characterInfo;
162 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu)
165 Yaz_Proxy *parent = m_parent;
166 Z_OtherInformation **oi;
167 Yaz_ProxyClient *c = m_client;
169 get_otherInfoAPDU(apdu, &oi);
170 char *cookie = get_cookie(oi);
174 const char *proxy_host = get_proxy(oi);
176 proxy_host = m_default_target;
179 m_config.get_target_info(proxy_host, &url, &m_keepalive, &m_bw_max,
180 &m_pdu_max, &m_max_record_retrieve);
184 yaz_log(LOG_LOG, "%s No default target", m_session_str);
187 m_proxyTarget = (char*) xstrdup(url);
189 if (cookie && *cookie)
191 Yaz_ProxyClient *cc = 0;
193 for (c = parent->m_clientPool; c; c = c->m_next)
196 assert (*c->m_prev == c);
197 if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
198 !strcmp(m_proxyTarget, c->get_hostname()))
207 // The following handles "cancel"
208 // If connection is busy (waiting for PDU) and
209 // we have an initRequest we can safely do re-open
210 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
212 yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
215 c->client(m_proxyTarget);
220 c->m_last_resultCount = 0;
221 c->m_sr_transform = 0;
223 c->m_resultSetStartPoint = 0;
224 c->timeout(m_target_idletime);
226 c->m_seqno = parent->m_seqno;
227 if (c->m_server && c->m_server != this)
228 c->m_server->m_client = 0;
231 yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
237 Yaz_ProxyClient *cc = 0;
239 for (c = parent->m_clientPool; c; c = c->m_next)
242 assert (*c->m_prev == c);
243 if (c->m_server == 0 && c->m_cookie == 0 &&
244 !strcmp(m_proxyTarget, c->get_hostname()))
254 yaz_log (LOG_LOG, "%s REUSE %d %d %s",
256 c->m_seqno, parent->m_seqno, c->get_hostname());
258 c->m_seqno = parent->m_seqno;
259 assert(c->m_server == 0);
268 if (apdu->which != Z_APDU_initRequest)
270 yaz_log (LOG_LOG, "no first INIT!");
273 Z_InitRequest *initRequest = apdu->u.initRequest;
275 if (!initRequest->idAuthentication)
277 if (m_proxy_authentication)
279 initRequest->idAuthentication =
280 (Z_IdAuthentication *)
281 odr_malloc (odr_encode(),
282 sizeof(*initRequest->idAuthentication));
283 initRequest->idAuthentication->which =
284 Z_IdAuthentication_open;
285 initRequest->idAuthentication->u.open =
286 odr_strdup (odr_encode(), m_proxy_authentication);
290 // go through list of clients - and find the lowest/oldest one.
291 Yaz_ProxyClient *c_min = 0;
293 int no_of_clients = 0;
294 if (parent->m_clientPool)
295 yaz_log (LOG_LOG, "Existing sessions");
296 for (c = parent->m_clientPool; c; c = c->m_next)
298 yaz_log (LOG_LOG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
299 c->m_waiting, c->get_hostname(),
300 c->m_cookie ? c->m_cookie : "");
302 if (min_seq < 0 || c->m_seqno < min_seq)
304 min_seq = c->m_seqno;
308 if (no_of_clients >= parent->m_max_clients)
311 if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
313 yaz_log (LOG_LOG, "%s MAXCLIENTS Destroy %d",
314 m_session_str, c->m_seqno);
315 if (c->m_server && c->m_server != this)
321 yaz_log (LOG_LOG, "%s MAXCLIENTS Reuse %d %d %s",
323 c->m_seqno, parent->m_seqno, c->get_hostname());
327 c->m_cookie = xstrdup(cookie);
328 c->m_seqno = parent->m_seqno;
329 if (c->m_server && c->m_server != this)
331 c->m_server->m_client = 0;
340 yaz_log (LOG_LOG, "%s NEW %d %s",
341 m_session_str, parent->m_seqno, m_proxyTarget);
342 c = new Yaz_ProxyClient(m_PDU_Observable->clone());
343 c->m_next = parent->m_clientPool;
345 c->m_next->m_prev = &c->m_next;
346 parent->m_clientPool = c;
347 c->m_prev = &parent->m_clientPool;
353 c->m_cookie = xstrdup(cookie);
355 c->m_seqno = parent->m_seqno;
356 c->client(m_proxyTarget);
358 c->m_last_resultCount = 0;
361 c->m_sr_transform = 0;
363 c->m_resultSetStartPoint = 0;
368 yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
372 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
375 for (i = 0; i<num; i++)
378 Z_DefaultDiagFormat *r;
379 Z_DiagRec *p = pp[i];
380 if (p->which != Z_DiagRec_defaultFormat)
382 yaz_log(LOG_LOG, "%s Error no diagnostics", m_session_str);
386 r = p->u.defaultFormat;
387 if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
388 ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
389 yaz_log(LOG_LOG, "%s Error unknown diagnostic set", m_session_str);
392 case Z_DefaultDiagFormat_v2Addinfo:
393 yaz_log(LOG_LOG, "%s Error %d %s:%s",
395 *r->condition, diagbib1_str(*r->condition),
398 case Z_DefaultDiagFormat_v3Addinfo:
399 yaz_log(LOG_LOG, "%s Error %d %s:%s",
401 *r->condition, diagbib1_str(*r->condition),
408 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
411 if (apdu->which == Z_APDU_searchResponse)
413 Z_SearchResponse *sr = apdu->u.searchResponse;
414 Z_Records *p = sr->records;
415 if (p && p->which == Z_Records_NSD)
417 Z_DiagRec dr, *dr_p = &dr;
418 dr.which = Z_DiagRec_defaultFormat;
419 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
421 display_diagrecs(&dr_p, 1);
426 yaz_log(LOG_LOG, "%s %d hits", m_session_str,
430 else if (apdu->which == Z_APDU_presentResponse)
432 Z_PresentResponse *sr = apdu->u.presentResponse;
433 Z_Records *p = sr->records;
434 if (p && p->which == Z_Records_NSD)
436 Z_DiagRec dr, *dr_p = &dr;
437 dr.which = Z_DiagRec_defaultFormat;
438 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
440 display_diagrecs(&dr_p, 1);
443 int r = send_Z_PDU(apdu, &len);
444 yaz_log (LOG_LOG, "%s Sending %s to client %d bytes", m_session_str,
445 apdu_name(apdu), len);
447 m_bw_stat.add_bytes(len);
451 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
454 int r = send_Z_PDU(apdu, &len);
455 yaz_log (LOG_LOG, "%s Sending %s to %s %d bytes",
457 apdu_name(apdu), get_hostname(), len);
462 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
464 if (*m_parent->m_optimize == '0')
465 return apdu; // don't optimize result sets..
466 if (apdu->which == Z_APDU_presentRequest)
468 Z_PresentRequest *pr = apdu->u.presentRequest;
469 Z_NamePlusRecordList *npr;
470 int toget = *pr->numberOfRecordsRequested;
471 int start = *pr->resultSetStartPoint;
473 if (m_client->m_last_resultSetId &&
474 !strcmp(m_client->m_last_resultSetId, pr->resultSetId))
476 if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
477 pr->preferredRecordSyntax,
478 pr->recordComposition))
480 yaz_log (LOG_LOG, "%s Returned cache records for present request",
482 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
483 new_apdu->u.presentResponse->referenceId = pr->referenceId;
485 new_apdu->u.presentResponse->numberOfRecordsReturned
486 = odr_intdup(odr_encode(), toget);
488 new_apdu->u.presentResponse->records = (Z_Records*)
489 odr_malloc(odr_encode(), sizeof(Z_Records));
490 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
491 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
492 new_apdu->u.presentResponse->nextResultSetPosition =
493 odr_intdup(odr_encode(), start+toget);
495 send_to_client(new_apdu);
501 if (apdu->which != Z_APDU_searchRequest)
503 Z_SearchRequest *sr = apdu->u.searchRequest;
504 Yaz_Z_Query *this_query = new Yaz_Z_Query;
505 Yaz_Z_Databases this_databases;
507 this_databases.set(sr->num_databaseNames, (const char **)
510 this_query->set_Z_Query(sr->query);
513 this_query->print(query_str, sizeof(query_str)-1);
514 yaz_log(LOG_LOG, "%s Query %s", m_session_str, query_str);
516 if (m_client->m_last_ok && m_client->m_last_query &&
517 m_client->m_last_query->match(this_query) &&
518 !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
519 m_client->m_last_databases.match(this_databases))
522 if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
523 m_client->m_last_resultCount < *sr->largeSetLowerBound)
525 Z_NamePlusRecordList *npr;
526 int toget = *sr->mediumSetPresentNumber;
527 Z_RecordComposition *comp = 0;
529 if (toget > m_client->m_last_resultCount)
530 toget = m_client->m_last_resultCount;
532 if (sr->mediumSetElementSetNames)
534 comp = (Z_RecordComposition *)
535 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
536 comp->which = Z_RecordComp_simple;
537 comp->u.simple = sr->mediumSetElementSetNames;
540 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
541 sr->preferredRecordSyntax, comp))
543 yaz_log (LOG_LOG, "%s Returned cache records for medium set",
545 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
546 new_apdu->u.searchResponse->referenceId = sr->referenceId;
547 new_apdu->u.searchResponse->resultCount =
548 &m_client->m_last_resultCount;
550 new_apdu->u.searchResponse->numberOfRecordsReturned
551 = odr_intdup(odr_encode(), toget);
553 new_apdu->u.searchResponse->presentStatus =
554 odr_intdup(odr_encode(), Z_PresentStatus_success);
555 new_apdu->u.searchResponse->records = (Z_Records*)
556 odr_malloc(odr_encode(), sizeof(Z_Records));
557 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
558 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
559 new_apdu->u.searchResponse->nextResultSetPosition =
560 odr_intdup(odr_encode(), toget+1);
561 send_to_client(new_apdu);
567 // send present request (medium size)
568 yaz_log (LOG_LOG, "%s Optimizing search for medium set",
571 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
572 Z_PresentRequest *pr = new_apdu->u.presentRequest;
573 pr->referenceId = sr->referenceId;
574 pr->resultSetId = sr->resultSetName;
575 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
576 *pr->numberOfRecordsRequested = toget;
577 pr->recordComposition = comp;
578 m_client->m_sr_transform = 1;
582 else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
583 m_client->m_last_resultCount <= 0)
585 // large set. Return pseudo-search response immediately
586 yaz_log (LOG_LOG, "%s Optimizing search for large set",
588 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
589 new_apdu->u.searchResponse->referenceId = sr->referenceId;
590 new_apdu->u.searchResponse->resultCount =
591 &m_client->m_last_resultCount;
592 send_to_client(new_apdu);
597 Z_NamePlusRecordList *npr;
598 int toget = m_client->m_last_resultCount;
599 Z_RecordComposition *comp = 0;
601 // send a present request (small set)
603 if (sr->smallSetElementSetNames)
605 comp = (Z_RecordComposition *)
606 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
607 comp->which = Z_RecordComp_simple;
608 comp->u.simple = sr->smallSetElementSetNames;
611 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
612 sr->preferredRecordSyntax, comp))
614 yaz_log (LOG_LOG, "%s Returned cache records for small set",
616 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
617 new_apdu->u.searchResponse->referenceId = sr->referenceId;
618 new_apdu->u.searchResponse->resultCount =
619 &m_client->m_last_resultCount;
621 new_apdu->u.searchResponse->numberOfRecordsReturned
622 = odr_intdup(odr_encode(), toget);
624 new_apdu->u.searchResponse->presentStatus =
625 odr_intdup(odr_encode(), Z_PresentStatus_success);
626 new_apdu->u.searchResponse->records = (Z_Records*)
627 odr_malloc(odr_encode(), sizeof(Z_Records));
628 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
629 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
630 new_apdu->u.searchResponse->nextResultSetPosition =
631 odr_intdup(odr_encode(), toget+1);
632 send_to_client(new_apdu);
637 yaz_log (LOG_LOG, "%s Optimizing search for small set",
639 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
640 Z_PresentRequest *pr = new_apdu->u.presentRequest;
641 pr->referenceId = sr->referenceId;
642 pr->resultSetId = sr->resultSetName;
643 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
644 *pr->numberOfRecordsRequested = toget;
645 pr->recordComposition = comp;
646 m_client->m_sr_transform = 1;
653 delete m_client->m_last_query;
654 m_client->m_last_query = this_query;
655 m_client->m_last_ok = 0;
656 m_client->m_cache.clear();
657 m_client->m_resultSetStartPoint = 0;
659 xfree (m_client->m_last_resultSetId);
660 m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
662 m_client->m_last_databases.set(sr->num_databaseNames,
663 (const char **) sr->databaseNames);
669 void Yaz_Proxy::recv_Z_PDU(Z_APDU *apdu, int len)
674 yaz_log (LOG_LOG, "%s Receiving %s from client %d bytes", m_session_str,
675 apdu_name(apdu), len);
677 if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
680 m_bw_stat.add_bytes(len);
681 m_pdu_stat.add_bytes(1);
683 int bw_total = m_bw_stat.get_total();
684 int pdu_total = m_pdu_stat.get_total();
686 yaz_log(LOG_LOG, "%s stat bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
687 m_session_str, bw_total, pdu_total, m_bw_max, m_pdu_max);
690 if (bw_total > m_bw_max)
692 reduce = (bw_total/m_bw_max);
697 if (pdu_total > m_pdu_max)
699 int nreduce = (60/m_pdu_max);
700 reduce = (reduce > nreduce) ? reduce : nreduce;
705 yaz_log(LOG_LOG, "%s Limit delay=%d", m_session_str, reduce);
706 m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
707 timeout(reduce); // call us reduce seconds later
710 recv_Z_PDU_0(apdu); // all fine. Proceed receive PDU as usual
713 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
715 if (m_max_record_retrieve)
717 if (apdu->which == Z_APDU_presentRequest)
719 Z_PresentRequest *pr = apdu->u.presentRequest;
720 if (pr->numberOfRecordsRequested &&
721 *pr->numberOfRecordsRequested > m_max_record_retrieve)
722 *pr->numberOfRecordsRequested = m_max_record_retrieve;
727 void Yaz_Proxy::recv_Z_PDU_0(Z_APDU *apdu)
729 // Determine our client.
730 m_client = get_client(apdu);
736 m_client->m_server = this;
738 if (apdu->which == Z_APDU_initRequest)
740 if (m_client->m_init_flag)
742 Z_APDU *apdu = m_client->m_initResponse;
743 apdu->u.initResponse->otherInfo = 0;
744 if (m_client->m_cookie && *m_client->m_cookie)
745 set_otherInformationString(apdu, VAL_COOKIE, 1,
747 send_to_client(apdu);
750 m_client->m_init_flag = 1;
752 handle_max_record_retrieve(apdu);
754 apdu = result_set_optimize(apdu);
758 // delete other info part from PDU before sending to target
759 Z_OtherInformation **oi;
760 get_otherInfoAPDU(apdu, &oi);
764 if (apdu->which == Z_APDU_presentRequest &&
765 m_client->m_resultSetStartPoint == 0)
767 Z_PresentRequest *pr = apdu->u.presentRequest;
768 m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
769 m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
771 m_client->m_resultSetStartPoint = 0;
773 if (m_client->send_to_target(apdu) < 0)
780 m_client->m_waiting = 1;
783 void Yaz_Proxy::connectNotify()
787 void Yaz_Proxy::shutdown()
789 // only keep if keep_alive flag is set...
790 if (m_keepalive && m_client && m_client->m_waiting == 0)
792 yaz_log (LOG_LOG, "%s Shutdown (client to proxy) keepalive %s",
794 m_client->get_hostname());
795 assert (m_client->m_waiting != 2);
796 // Tell client (if any) that no server connection is there..
797 m_client->m_server = 0;
801 yaz_log (LOG_LOG, "%s Shutdown (client to proxy) close %s",
803 m_client->get_hostname());
804 assert (m_client->m_waiting != 2);
809 yaz_log (LOG_LOG, "%s shutdown (client to proxy) bad state",
815 yaz_log (LOG_LOG, "%s Shutdown (client to proxy)",
821 const char *Yaz_ProxyClient::get_session_str()
825 return m_server->get_session_str();
828 void Yaz_ProxyClient::shutdown()
830 yaz_log (LOG_LOG, "%s Shutdown (proxy to target) %s", get_session_str(),
836 void Yaz_Proxy::failNotify()
838 yaz_log (LOG_LOG, "%s Connection closed by client",
843 void Yaz_ProxyClient::failNotify()
845 yaz_log (LOG_LOG, "%s Connection closed by target %s",
846 get_session_str(), get_hostname());
850 void Yaz_ProxyClient::connectNotify()
852 yaz_log (LOG_LOG, "%s Connection accepted by %s", get_session_str(),
856 to = m_server->get_target_idletime();
862 IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
863 *the_PDU_Observable, int fd)
865 return new Yaz_ProxyClient(the_PDU_Observable);
868 Yaz_ProxyClient::~Yaz_ProxyClient()
873 m_next->m_prev = m_prev;
874 m_waiting = 2; // for debugging purposes only.
875 odr_destroy(m_init_odr);
877 xfree (m_last_resultSetId);
881 void Yaz_Proxy::timeoutNotify()
885 timeout(m_client_idletime);
886 Z_APDU *apdu = m_bw_hold_PDU;
892 yaz_log (LOG_LOG, "%s Timeout (client to proxy)", m_session_str);
897 void Yaz_ProxyClient::timeoutNotify()
899 yaz_log (LOG_LOG, "%s Timeout (proxy to target) %s", get_session_str(),
904 Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable) :
905 Yaz_Z_Assoc (the_PDU_Observable)
912 m_last_resultSetId = 0;
913 m_last_resultCount = 0;
917 m_init_odr = odr_createmem (ODR_DECODE);
919 m_resultSetStartPoint = 0;
920 m_bytes_sent = m_bytes_recv = 0;
923 const char *Yaz_Proxy::option(const char *name, const char *value)
925 if (!strcmp (name, "optimize")) {
928 m_optimize = xstrdup (value);
935 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
939 yaz_log (LOG_LOG, "%s Receiving %s from %s %d bytes", get_session_str(),
940 apdu_name(apdu), get_hostname(), len);
941 if (apdu->which == Z_APDU_initResponse)
943 NMEM nmem = odr_extract_mem (odr_decode());
944 odr_reset (m_init_odr);
945 nmem_transfer (m_init_odr->mem, nmem);
946 m_initResponse = apdu;
949 if (apdu->which == Z_APDU_searchResponse)
951 Z_SearchResponse *sr = apdu->u.searchResponse;
952 m_last_resultCount = *sr->resultCount;
953 int status = *sr->searchStatus;
954 if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
958 if (sr->records && sr->records->which == Z_Records_DBOSD)
960 m_cache.add(odr_decode(),
961 sr->records->u.databaseOrSurDiagnostics, 1,
966 if (apdu->which == Z_APDU_presentResponse)
968 Z_PresentResponse *pr = apdu->u.presentResponse;
972 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
973 Z_SearchResponse *sr = new_apdu->u.searchResponse;
974 sr->referenceId = pr->referenceId;
975 *sr->resultCount = m_last_resultCount;
976 sr->records = pr->records;
977 sr->nextResultSetPosition = pr->nextResultSetPosition;
978 sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
981 if (pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
983 m_cache.add(odr_decode(),
984 pr->records->u.databaseOrSurDiagnostics,
985 m_resultSetStartPoint, -1);
986 m_resultSetStartPoint = 0;
990 set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
993 m_server->send_to_client(apdu);
995 if (apdu->which == Z_APDU_close)