Fixed ticket #203: Fix error when telephone-event is set as the first format in SDP (thanks Chris Hamilton)

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1109 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 11 insertions, 0 deletions

diff --git a/pjsip/src/pjsua-lib/pjsua_call.c b/pjsip/src/pjsua-lib/pjsua_call.c
index 2441f8ed..b0e420eb 100644
--- a/pjsip/src/pjsua-lib/pjsua_call.c
+++ b/pjsip/src/pjsua-lib/pjsua_call.c
@@ -708,6 +708,9 @@ pj_bool_t pjsua_call_on_incoming(pjsip_rx_data *rdata)
 	if (status != PJ_SUCCESS)
 	    pjsua_perror(THIS_FILE, "Error answering session", status);
 
+	/* Note that inv may be invalid if 200/OK has caused error in
+	 * starting the media.
+	 */
 
 	PJ_LOG(4,(THIS_FILE, "Disconnecting replaced call %d",
 			     replaced_call->index));
@@ -1035,6 +1038,14 @@ PJ_DEF(pj_status_t) pjsua_call_answer( pjsua_call_id call_id,
 	return status;
     }
 
+    /* Call might have been disconnected if application is answering with
+     * 200/OK and the media failed to start.
+     */
+    if (call->inv == NULL) {
+	pjsip_dlg_dec_lock(dlg);
+	return PJSIP_ESESSIONTERMINATED;
+    }
+
     /* Add additional headers etc */
     pjsua_process_msg_data( tdata, msg_data);