Changeset 1814 for pjproject/trunk/pjsip/src/pjsip-ua/sip_inv.c

Timestamp:

Feb 21, 2008 7:28:21 PM (16 years ago)

Author:

bennylp

Message:

Ticket #488: When outgoing request within dialog is responded with 481 or 408, should send BYE after terminating dialog (thanks Philippe Leuba)

File:

• pjproject/trunk/pjsip/src/pjsip-ua/sip_inv.c (modified) (7 diffs)

pjproject/trunk/pjsip/src/pjsip-ua/sip_inv.c

@@ -2884 +2884 @@
 
 /*
+ * Handle 408, 481, or any other responses that terminates dialog.
+ */
+static pj_bool_t handle_408_481_response(pjsip_inv_session *inv, 
+                                         pjsip_event *e)
+{
+    /* RFC 3261 Section 12.2.1.2:
+     *  If the response for a request within a dialog is a 481
+     *  (Call/Transaction Does Not Exist) or a 408 (Request Timeout), the UAC
+     *  SHOULD terminate the dialog.  A UAC SHOULD also terminate a dialog if
+     *  no response at all is received for the request (the client
+     *  transaction would inform the TU about the timeout.)
+     * 
+     *  For INVITE initiated dialogs, terminating the dialog consists of
+     *  sending a BYE.
+     *
+     * Note:
+     *  according to X, this should terminate dialog usage only, not the 
+     *  dialog.
+     */
+    pjsip_transaction *tsx = e->body.tsx_state.tsx;
+
+    pj_assert(tsx->role == PJSIP_UAC_ROLE);
+
+    /* Note that 481 response to CANCEL does not terminate dialog usage,
+     * but only the transaction.
+     */
+    if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST &&
+            tsx->method.id != PJSIP_CANCEL_METHOD) ||
+        tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT ||
+        tsx->status_code == PJSIP_SC_TSX_TIMEOUT ||
+        tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR)
+    {
+        pjsip_tx_data *bye;
+        pj_status_t status;
+
+        inv_set_cause(inv, tsx->status_code, &tsx->status_text);
+        inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e);
+
+        /* Send BYE */
+        status = pjsip_dlg_create_request(inv->dlg, pjsip_get_bye_method(), 
+                                          -1, &bye);
+        if (status == PJ_SUCCESS) {
+            pjsip_inv_send_msg(inv, bye);
+        }
+
+        return PJ_TRUE; /* Handled */
+
+    } else {
+        return PJ_FALSE; /* Unhandled */
+    }
+}
+
+
+/*
  * State CONNECTING is after 2xx response to INVITE is sent/received.
  */
@@ -2994 +3048 @@
          * Handle response to outgoing UPDATE request.
          */
-        inv_handle_update_response(inv, e);
+        if (handle_408_481_response(inv, e) == PJ_FALSE)
+            inv_handle_update_response(inv, e);
 
     } else if (tsx->role == PJSIP_ROLE_UAS &&
@@ -3006 +3061 @@
 
     } else if (tsx->role == PJSIP_ROLE_UAC) {
-        /*
-         * Handle case when outgoing request is answered with 481 (Call/
-         * Transaction Does Not Exist), 408, or when it's timed out. In these
-         * cases, disconnect session (i.e. dialog usage only).
-         * Note that 481 response to CANCEL does not terminate dialog usage,
-         * but only the transaction.
-         */
-        if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST &&
-                tsx->method.id != PJSIP_CANCEL_METHOD) ||
-            tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT ||
-            tsx->status_code == PJSIP_SC_TSX_TIMEOUT ||
-            tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR)
-        {
-            inv_set_cause(inv, tsx->status_code, &tsx->status_text);
-            inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e);
-        }
+        
+        handle_408_481_response(inv, e);
     }
 
@@ -3250 +3291 @@
             inv_send_ack(inv, e);
 
+        } else if (handle_408_481_response(inv, e)) {
+
+            /* Handle response that terminates dialog */
+            /* Nothing to do (already handled) */
+
         } else if (tsx->state == PJSIP_TSX_STATE_COMPLETED &&
                    (tsx->status_code==401 || tsx->status_code==407))
@@ -3267 +3313 @@
             status = pjsip_inv_send_msg( inv, tdata);
 
-        } else if (tsx->status_code==PJSIP_SC_CALL_TSX_DOES_NOT_EXIST ||
-                   tsx->status_code==PJSIP_SC_REQUEST_TIMEOUT ||
-                   tsx->status_code >= 700)
-        {
-            /*
-             * Handle responses that terminates dialog.
-             */
-            inv_set_cause(inv, tsx->status_code, &tsx->status_text);
-            inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e);
-
         } else if (tsx->status_code >= 300 && tsx->status_code < 700) {
 
@@ -3305 +3341 @@
          * Handle response to outgoing UPDATE request.
          */
-        inv_handle_update_response(inv, e);
+        if (handle_408_481_response(inv, e) == PJ_FALSE)
+            inv_handle_update_response(inv, e);
 
     } else if (tsx->role == PJSIP_ROLE_UAS &&
@@ -3318 +3355 @@
     } else if (tsx->role == PJSIP_ROLE_UAC) {
         /*
-         * Handle case when outgoing request is answered with 481 (Call/
-         * Transaction Does Not Exist), 408, or when it's timed out. In these
-         * cases, disconnect session (i.e. dialog usage only).
-         * Note that 481 response to CANCEL does not terminate dialog usage,
-         * but only the transaction.
-         */
-        if ((tsx->status_code == PJSIP_SC_CALL_TSX_DOES_NOT_EXIST &&
-                tsx->method.id != PJSIP_CANCEL_METHOD) ||
-            tsx->status_code == PJSIP_SC_REQUEST_TIMEOUT ||
-            tsx->status_code == PJSIP_SC_TSX_TIMEOUT ||
-            tsx->status_code == PJSIP_SC_TSX_TRANSPORT_ERROR)
-        {
-            inv_set_cause(inv, tsx->status_code, &tsx->status_text);
-            inv_set_state(inv, PJSIP_INV_STATE_DISCONNECTED, e);
-        }
+         * Handle 408/481 response
+         */
+        handle_408_481_response(inv, e);
     }