* Sebastian Hammer, Adam Dickmeiss
*
* $Log: session.h,v $
- * Revision 1.1 1995-03-14 10:28:02 quinn
+ * Revision 1.6 1995-05-15 11:56:41 quinn
+ * Asynchronous facilities. Restructuring of seshigh code.
+ *
+ * Revision 1.5 1995/04/20 15:13:01 quinn
+ * Cosmetic
+ *
+ * Revision 1.4 1995/04/10 10:23:39 quinn
+ * Some work to add scan and other things.
+ *
+ * Revision 1.3 1995/03/30 09:09:27 quinn
+ * Added state-handle and some support for asynchronous activities.
+ *
+ * Revision 1.2 1995/03/27 08:34:29 quinn
+ * Added dynamic server functionality.
+ * Released bindings to session.c (is now redundant)
+ *
+ * Revision 1.1 1995/03/14 10:28:02 quinn
* More work on demo server.
*
*
#include <comstack.h>
#include <odr.h>
+#include <oid.h>
+#include <proto.h>
+#include <eventl.h>
+
+typedef struct request
+{
+ int len_refid; /* length of referenceid */
+ char *refid; /* referenceid */
+ enum {
+ REQUEST_IDLE, /* the request is just sitting in the queue */
+ REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
+ /* this list will have more elements when acc/res control is added */
+ } state;
+
+ Z_APDU *request; /* Current request */
+ ODR_MEM request_mem; /* ODR memory handle for request */
+ int size_response; /* size of buffer */
+ int len_response; /* length of encoded data */
+ char *response; /* encoded data waiting for transmission */
+
+ struct request *next;
+} request;
+
+typedef struct request_q
+{
+ request *head;
+ request *tail;
+ int num;
+} request_q;
+
+/*
+ * association state.
+ */
typedef struct association
{
- /* comms-related handles */
- IOCHAN client_chan;
- COMSTACK client_link;
- ODR decode;
- ODR encode;
- char *encode_buffer;
- int encoded_len;
- char *input_buffer;
- int input_buffer_len;
- int input_apdu_len;
- int state;
-#define ASSOC_UNINIT 0
-#define ASSOC_IDLE 1
+ IOCHAN client_chan; /* event-loop control */
+ COMSTACK client_link; /* communication handle */
+ ODR decode; /* decoding stream */
+ ODR encode; /* encoding stream */
+ ODR print; /* printing stream (for -a) */
+ char *encode_buffer; /* temporary buffer for encoded data */
+ int encoded_len; /* length of encoded data */
+ char *input_buffer; /* input buffer (allocated by comstack) */
+ int input_buffer_len; /* length (size) of buffer */
+ int input_apdu_len; /* length of current incoming APDU */
+ oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
+ void *backend; /* backend handle */
+ request_q incoming; /* Q of incoming PDUs */
+ request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
/* session parameters */
int preferredMessageSize;
} association;
association *create_association(IOCHAN channel, COMSTACK link);
+void destroy_association(association *h);
void ir_session(IOCHAN h, int event);
+void request_enq(request_q *q, request *r);
+request *request_head(request_q *q);
+request *request_deq(request_q *q);
+void request_initq(request_q *q);
+request *request_get(void);
+void request_release(request *r);
+
#endif