Asynch. API

[egate.git] / include / zaccess.h

diff --git a/include/zaccess.h b/include/zaccess.h
index 91f7a97..2b3e8d7 100644 (file)
--- a/include/zaccess.h
+++ b/include/zaccess.h
@@ -2,7 +2,10 @@
  * Europagate, 1995
  *
  * $Log: zaccess.h,v $
- * Revision 1.11  1995/04/19 12:55:41  quinn
+ * Revision 1.12  1995/04/20 15:25:25  quinn
+ * Asynch. API
+ *
+ * Revision 1.11  1995/04/19  12:55:41  quinn
  * Added auth
  *
  * Revision 1.10  1995/04/17  11:27:24  quinn
@@ -26,8 +29,8 @@
 #define ZASS_NAME "EUROPAGATE E-mail/Z39.50 gateway"
 #define ZASS_VERSION "development 0.2"
 
-#define ZASS_MAXRECORDSIZE  10000
-#define ZASS_PREFERREDMESSAGESIZE 10000
+#define ZASS_MAXRECORDSIZE  40000
+#define ZASS_PREFERREDMESSAGESIZE 40000
 
 typedef struct zass *ZASS;
 
@@ -77,10 +80,63 @@ typedef struct zass_presentent
     struct zass_record *records;
 } zass_presentent;
 
-ZASS zass_open(char *host, int port, char *auth);
+/*
+ * open a connection to the target. If complete is NULL, the connection
+ * will be blocking, and complete will be ignored by the following
+ * primitives. If complete is not null, the connection will be non-blocking.
+ * if the connection cannot be established immediately, *complete will
+ * be set to zero, and the user should call openresult when select signals
+ * that I/O is possible. Returns NULL on a fatal error in the connection
+ * establishment.
+ */
+ZASS zass_open(char *host, int port, int *complete, char *auth);
+
+/*
+ * second half of connection establishment in nonblocking mode.
+ * Returns:
+ * -1 with *complete == 0   : call again when select allows.
+ * -1 with *complete == 1   : fatal error. Abort connection.
+ * 0                        : success. 
+ */
+int zass_openresult(ZASS a, int *complete);
+
+/*
+ * Return the file handle of the association (for select() & other fun.
+ */
+int zass_fileno(ZASS a);
+
+/*
+ * Returns:
+ * NULL with *complete == 0 : call searchresult when select allows (nonbl. only)
+ * NULL with *complete == 1 : fatal error. Abort connection.
+ * non-null                 : operation complete.
+ */
 const struct zass_searchent *zass_search(ZASS a, struct ccl_rpn_node *query,
-    char *resname, char *databases);
+    char *resname, char *databases, int *complete);
+
+/*
+ * Returns:
+ * NULL with *complete == 0 : call again when select allows (nonbl. only)
+ * NULL with *complete == 1 : fatal error. Abort connection.
+ * non-null                 : operation complete.
+ */
+const struct zass_searchent *zass_searchresult(ZASS a, int *complete);
+
+/*
+ * Returns:
+ * NULL with *complete == 0 : call presentresult when select ok (nonbl. only)
+ * NULL with *complete == 1 : fatal error. Abort connection.
+ * non-null                 : operation complete.
+ */
 const struct zass_presentent *zass_present(ZASS a, char *resname, int start,
-    int num);
+    int num, int *complete);
+
+/*
+ * Returns:
+ * NULL with *complete == 0 : call again when select allows (nonbl. only)
+ * NULL with *complete == 1 : fatal error. Abort connection.
+ * non-null                 : operation complete.
+ */
+const struct zass_presentent *zass_presentresult(ZASS a, int *complete);
 
 #endif