add error handling for when we get response to a invite that we don't have a…

add error handling for when we get response to a invite that we don't have a session for (session timer after session destroyed?)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9947 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/sofia.c

@@ -2149,6 +2149,29 @@ static void sofia_handle_sip_r_invite(switch_core_session_t *session, int status
 			}
 		}
 	}
+
+	if (!session && (status == 180 || status == 183 || status == 200)) {
+		/* This should never happen.  It means the sip stack thinks there is a call but FreeSWITCH does not */
+		const char *callid = "n/a";
+
+		if (sip && sip->sip_call_id && sip->sip_call_id->i_id) callid = sip->sip_call_id->i_id;
+
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "received response to invite with no matching session, destroying callid [%s]!\n", callid);
+
+		if (nh) {
+			if (status == 200) {
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Sending BYE to orphan call.\n");
+				nua_bye(nh, TAG_END());
+			} else {
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Sending CANCEL to orphan call.\n");
+				nua_cancel(nh, TAG_END());
+			}
+
+			nua_handle_bind(nh, NULL);
+			nua_handle_destroy(nh);
+		}
+
+	}
 }