2 * Copyright (C) 1995-1999, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.22 2000-03-20 19:06:25 adam
8 * Added Segment request for fronend server. Work on admin for client.
10 * Revision 1.21 1999/11/30 13:47:12 adam
11 * Improved installation. Moved header files to include/yaz.
13 * Revision 1.20 1999/10/11 10:01:24 adam
14 * Implemented bend_sort_rr handler for frontend server.
16 * Revision 1.19 1999/04/20 09:56:48 adam
17 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
18 * Modified all encoders/decoders to reflect this change.
20 * Revision 1.18 1998/08/03 10:23:57 adam
21 * Fixed bug regarding Options for Sort.
23 * Revision 1.17 1998/07/20 12:38:43 adam
24 * Implemented delete result set service to server API.
26 * Revision 1.16 1998/03/31 11:07:45 adam
27 * Furhter work on UNIverse resource report.
28 * Added Extended Services handling in frontend server.
30 * Revision 1.15 1998/02/11 11:53:36 adam
31 * Changed code so that it compiles as C++.
33 * Revision 1.14 1998/02/10 11:03:57 adam
34 * Added support for extended handlers in backend server interface.
36 * Revision 1.13 1998/01/29 13:30:23 adam
37 * Better event handle system for NT/Unix.
39 * Revision 1.12 1997/09/01 08:53:01 adam
40 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
41 * moved a separate directory. MSV5.0 project server.dsp created.
42 * As an option, the server can now operate as an NT service.
44 * Revision 1.11 1995/11/08 17:41:40 quinn
47 * Revision 1.10 1995/08/29 11:18:01 quinn
48 * Added code to receive close
50 * Revision 1.9 1995/06/16 10:31:38 quinn
51 * Added session timeout.
53 * Revision 1.8 1995/05/17 08:42:28 quinn
54 * Transfer auth info to backend. Allow backend to reject init gracefully.
56 * Revision 1.7 1995/05/16 08:51:08 quinn
57 * License, documentation, and memory fixes
59 * Revision 1.6 1995/05/15 11:56:41 quinn
60 * Asynchronous facilities. Restructuring of seshigh code.
62 * Revision 1.5 1995/04/20 15:13:01 quinn
65 * Revision 1.4 1995/04/10 10:23:39 quinn
66 * Some work to add scan and other things.
68 * Revision 1.3 1995/03/30 09:09:27 quinn
69 * Added state-handle and some support for asynchronous activities.
71 * Revision 1.2 1995/03/27 08:34:29 quinn
72 * Added dynamic server functionality.
73 * Released bindings to session.c (is now redundant)
75 * Revision 1.1 1995/03/14 10:28:02 quinn
76 * More work on demo server.
84 #include <sys/types.h>
85 #include <yaz/comstack.h>
88 #include <yaz/proto.h>
92 REQUEST_IDLE, /* the request is just sitting in the queue */
93 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
94 /* this list will have more elements when acc/res control is added */
97 typedef struct request
99 int len_refid; /* length of referenceid */
100 char *refid; /* referenceid */
103 Z_APDU *request; /* Current request */
104 NMEM request_mem; /* memory handle for request */
106 int size_response; /* size of buffer */
107 int len_response; /* length of encoded data */
108 char *response; /* encoded data waiting for transmission */
111 struct request *next;
115 typedef struct request_q
128 ASSOC_NEW, /* not initialized yet */
129 ASSOC_UP, /* normal operation */
130 ASSOC_DEAD /* dead. Close if input arrives */
133 typedef struct association
135 IOCHAN client_chan; /* event-loop control */
136 COMSTACK client_link; /* communication handle */
137 ODR decode; /* decoding stream */
138 ODR encode; /* encoding stream */
139 ODR print; /* printing stream (for -a) */
140 char *encode_buffer; /* temporary buffer for encoded data */
141 int encoded_len; /* length of encoded data */
142 char *input_buffer; /* input buffer (allocated by comstack) */
143 int input_buffer_len; /* length (size) of buffer */
144 int input_apdu_len; /* length of current incoming APDU */
145 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
146 void *backend; /* backend handle */
147 request_q incoming; /* Q of incoming PDUs */
148 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
149 association_state state;
151 /* session parameters */
152 int preferredMessageSize;
153 int maximumRecordSize;
154 int version; /* highest version-bit set (2 or 3) */
157 int (*bend_search) ();
158 int (*bend_present) ();
159 int (*bend_esrequest) ();
160 int (*bend_delete) ();
162 int (*bend_segment) ();
165 association *create_association(IOCHAN channel, COMSTACK link);
166 void destroy_association(association *h);
167 void ir_session(IOCHAN h, int event);
169 void request_enq(request_q *q, request *r);
170 request *request_head(request_q *q);
171 request *request_deq(request_q *q);
172 request *request_deq_x(request_q *q, request *r);
173 void request_initq(request_q *q);
174 void request_delq(request_q *q);
175 request *request_get(request_q *q);
176 void request_release(request *r);