Added license document.

[yaz-moved-to-github.git] / server / session.h

diff --git a/server/session.h b/server/session.h
index cd7c2a3..bf3fc3e 100644 (file)
--- a/server/session.h
+++ b/server/session.h
@@ -4,7 +4,23 @@
  * 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.
  *
  *
@@ -15,22 +31,56 @@
 
 #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;
@@ -38,6 +88,14 @@ typedef struct association
 } 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