2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.6 1995-05-15 11:56:41 quinn
8 * Asynchronous facilities. Restructuring of seshigh code.
10 * Revision 1.5 1995/04/20 15:13:01 quinn
13 * Revision 1.4 1995/04/10 10:23:39 quinn
14 * Some work to add scan and other things.
16 * Revision 1.3 1995/03/30 09:09:27 quinn
17 * Added state-handle and some support for asynchronous activities.
19 * Revision 1.2 1995/03/27 08:34:29 quinn
20 * Added dynamic server functionality.
21 * Released bindings to session.c (is now redundant)
23 * Revision 1.1 1995/03/14 10:28:02 quinn
24 * More work on demo server.
38 typedef struct request
40 int len_refid; /* length of referenceid */
41 char *refid; /* referenceid */
43 REQUEST_IDLE, /* the request is just sitting in the queue */
44 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
45 /* this list will have more elements when acc/res control is added */
48 Z_APDU *request; /* Current request */
49 ODR_MEM request_mem; /* ODR memory handle for request */
51 int size_response; /* size of buffer */
52 int len_response; /* length of encoded data */
53 char *response; /* encoded data waiting for transmission */
58 typedef struct request_q
68 typedef struct association
70 IOCHAN client_chan; /* event-loop control */
71 COMSTACK client_link; /* communication handle */
72 ODR decode; /* decoding stream */
73 ODR encode; /* encoding stream */
74 ODR print; /* printing stream (for -a) */
75 char *encode_buffer; /* temporary buffer for encoded data */
76 int encoded_len; /* length of encoded data */
77 char *input_buffer; /* input buffer (allocated by comstack) */
78 int input_buffer_len; /* length (size) of buffer */
79 int input_apdu_len; /* length of current incoming APDU */
80 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
81 void *backend; /* backend handle */
82 request_q incoming; /* Q of incoming PDUs */
83 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
85 /* session parameters */
86 int preferredMessageSize;
87 int maximumRecordSize;
90 association *create_association(IOCHAN channel, COMSTACK link);
91 void destroy_association(association *h);
92 void ir_session(IOCHAN h, int event);
94 void request_enq(request_q *q, request *r);
95 request *request_head(request_q *q);
96 request *request_deq(request_q *q);
97 void request_initq(request_q *q);
98 request *request_get(void);
99 void request_release(request *r);