Call client_destroy when releasing it from session

[pazpar2-moved-to-github.git] / src / connection.c

diff --git a/src/connection.c b/src/connection.c
index f205252..e765435 100644 (file)
--- a/src/connection.c
+++ b/src/connection.c
@@ -79,7 +79,7 @@ static int connection_is_idle(struct connection *co)
     if (!ZOOM_connection_is_idle(link))
         return 0;
     event = ZOOM_connection_peek_event(link);
-    if (event == ZOOM_EVENT_NONE || event == ZOOM_EVENT_END)
+    if (event == ZOOM_EVENT_NONE)
         return 1;
     else
         return 0;
@@ -117,11 +117,12 @@ void connection_destroy(struct connection *co)
     }
     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 
-    remove_connection_from_host(co);
     if (co->client)
     {
         client_disconnect(co->client);
     }
+
+    remove_connection_from_host(co);
     xfree(co->zproxy);
     xfree(co);
 }
@@ -158,16 +159,20 @@ static struct connection *connection_create(struct client *cl,
 
 static void non_block_events(struct connection *co)
 {
-    struct client *cl = co->client;
+    int got_records = 0;
     IOCHAN iochan = co->iochan;
     ZOOM_connection link = co->link;
     while (1)
     {
+        struct client *cl = co->client;
         int ev;
         int r = ZOOM_event_nonblock(1, &link);
         if (!r)
             break;
+        if (!cl)
+            continue;
         ev = ZOOM_connection_last_event(link);
+        
 #if 0
         yaz_log(YLOG_LOG, "ZOOM_EVENT_%s", ZOOM_get_event_str(ev));
 #endif
@@ -208,33 +213,44 @@ static void non_block_events(struct connection *co)
             break;
         case ZOOM_EVENT_RECV_RECORD:
             client_record_response(cl);
+            got_records = 1;
             break;
         default:
             yaz_log(YLOG_LOG, "Unhandled event (%d) from %s",
                     ev, client_get_url(cl));
         }
     }
+    if (got_records)
+    {
+        struct client *cl = co->client;
+        if (cl)
+        {
+            client_got_records(cl);
+        }
+    }
 }
 
 void connection_continue(struct connection *co)
 {
-    non_block_events(co);
+    int r = ZOOM_connection_exec_task(co->link);
+    if (!r)
+        yaz_log(YLOG_WARN, "No task was executed for connection");
 }
 
 static void connection_handler(IOCHAN iochan, int event)
 {
     struct connection *co = iochan_getdata(iochan);
     struct client *cl = co->client;
-    struct session *se = 0;
 
-    if (cl)
-        se = client_get_session(cl);
-    else
+    if (!cl) 
     {
+        /* no client associated with it.. We are probably getting
+           a closed connection from the target.. Or, perhaps, an unexpected
+           package.. We will just close the connection */
+        yaz_log(YLOG_LOG, "timeout connection %p event=%d", co, event);
         connection_destroy(co);
         return;
     }
-
     if (event & EVENT_TIMEOUT)
     {
         if (co->state == Conn_Connecting)
@@ -274,6 +290,7 @@ void connect_resolver_host(struct host *host, iochan_man_t iochan_man)
 {
     struct connection *con;
 
+start:
     yaz_mutex_enter(host->mutex);
     con = host->connections;
     while (con)
@@ -284,22 +301,22 @@ void connect_resolver_host(struct host *host, iochan_man_t iochan_man)
             {
                 yaz_mutex_leave(host->mutex);
                 connection_destroy(con);
+                goto start;
                 /* start all over .. at some point it will be NULL */
-                con = host->connections;
             }
             else if (!con->client)
             {
                 yaz_mutex_leave(host->mutex);
                 connection_destroy(con);
                 /* start all over .. at some point it will be NULL */
-                con = host->connections;
+                goto start;
             }
             else
             {
                 yaz_mutex_leave(host->mutex);
                 connection_connect(con, iochan_man);
                 client_start_search(con->client);
-                con = host->connections;
+                goto start;
             }
         }
         else
@@ -396,7 +413,7 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man)
         ZOOM_connection_connect(link, host->ipport, 0);
     
     con->link = link;
-    con->iochan = iochan_create(0, connection_handler, 0);
+    con->iochan = iochan_create(0, connection_handler, 0, "connection_socket");
     con->state = Conn_Connecting;
     iochan_settimeout(con->iochan, con->operation_timeout);
     iochan_setdata(con->iochan, con);
@@ -421,7 +438,6 @@ int client_prep_connection(struct client *cl,
                            iochan_man_t iochan_man)
 {
     struct connection *co;
-    struct session *se = client_get_session(cl);
     struct host *host = client_get_host(cl);
     struct session_database *sdb = client_get_database(cl);
     const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY);
@@ -458,6 +474,9 @@ int client_prep_connection(struct client *cl,
             connection_release(co);
             client_set_connection(cl, co);
             co->client = cl;
+            /* ensure that connection is only assigned to this client
+               by marking the client non Idle */
+            client_set_state(cl, Client_Working);
             yaz_mutex_leave(host->mutex);
             co->operation_timeout = operation_timeout;
             co->session_timeout = session_timeout;