2 * Copyright (C) 1995-2007, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: session.h,v 1.14 2007-04-12 13:52:57 adam Exp $
9 * \brief Internal Header for GFS.
14 #include <yaz/comstack.h>
17 #include <yaz/proto.h>
18 #include <yaz/backend.h>
19 #include <yaz/retrieval.h>
23 statserv_options_block cb;
26 cql_transform_t cql_transform;
27 void *server_node_ptr;
31 yaz_retrieval_t retrieval;
32 struct gfs_server *next;
38 struct gfs_listen *next;
42 REQUEST_IDLE, /* the request is just sitting in the queue */
43 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
44 /* this list will have more elements when acc/res control is added */
47 typedef struct request
49 int len_refid; /* length of referenceid */
50 char *refid; /* referenceid */
53 Z_GDU *gdu_request; /* Current request */
54 Z_APDU *apdu_request; /* Current Z39.50 request */
55 NMEM request_mem; /* memory handle for request */
57 int size_response; /* size of buffer */
58 int len_response; /* length of encoded data */
59 char *response; /* encoded data waiting for transmission */
66 typedef struct request_q
79 ASSOC_NEW, /* not initialized yet */
80 ASSOC_UP, /* normal operation */
81 ASSOC_DEAD /* dead. Close if input arrives */
84 typedef struct association
86 IOCHAN client_chan; /* event-loop control */
87 COMSTACK client_link; /* communication handle */
88 ODR decode; /* decoding stream */
89 ODR encode; /* encoding stream */
90 ODR print; /* printing stream (for -a) */
91 char *encode_buffer; /* temporary buffer for encoded data */
92 int encoded_len; /* length of encoded data */
93 char *input_buffer; /* input buffer (allocated by comstack) */
94 int input_buffer_len; /* length (size) of buffer */
95 int input_apdu_len; /* length of current incoming APDU */
96 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
97 void *backend; /* backend handle */
98 request_q incoming; /* Q of incoming PDUs */
99 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
100 association_state state;
102 /* session parameters */
103 int preferredMessageSize;
104 int maximumRecordSize;
105 int version; /* highest version-bit set (2 or 3) */
107 unsigned cs_get_mask;
108 unsigned cs_put_mask;
109 unsigned cs_accept_mask;
111 struct bend_initrequest *init;
112 statserv_options_block *last_control;
114 struct gfs_server *server;
117 association *create_association(IOCHAN channel, COMSTACK link,
118 const char *apdufile);
119 void destroy_association(association *h);
120 void ir_session(IOCHAN h, int event);
122 void request_enq(request_q *q, request *r);
123 request *request_head(request_q *q);
124 request *request_deq(request_q *q);
125 request *request_deq_x(request_q *q, request *r);
126 void request_initq(request_q *q);
127 void request_delq(request_q *q);
128 request *request_get(request_q *q);
129 void request_release(request *r);
131 int statserv_must_terminate(void);
133 int control_association(association *assoc, const char *host, int force);
135 int ir_read(IOCHAN h, int event);
141 * indent-tabs-mode: nil
143 * vim: shiftwidth=4 tabstop=8 expandtab