fix for MODENDP-60 (handle max-forwards across a bridge). Move logic to core to…

fix for MODENDP-60 (handle max-forwards across a bridge).  Move logic to core to copy and decrement var.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6974 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -616,10 +616,8 @@ char *sofia_overcome_sip_uri_weakness(switch_core_session_t *session, const char
 switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 {
 	char *alert_info = NULL;
-	char *max_forwards = NULL;
+	const char *max_forwards = NULL;
 	const char *alertbuf;
-	const char *forwardbuf;
-	int forwardval;
 	private_object_t *tech_pvt;
 	switch_channel_t *channel = NULL;
 	switch_caller_profile_t *caller_profile;
@@ -664,10 +662,7 @@ switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 		alert_info = switch_core_session_sprintf(tech_pvt->session, "Alert-Info: %s", alertbuf);
 	}
 
-	if ((forwardbuf = switch_channel_get_variable(channel, SWITCH_MAX_FORWARDS_VARIABLE))) {
-		forwardval = atoi(forwardbuf) - 1;
-		max_forwards = switch_core_session_sprintf(tech_pvt->session, "%d", forwardval);
-	}
+	max_forwards = switch_channel_get_variable(channel, SWITCH_MAX_FORWARDS_VARIABLE);
 
 	if ((status = sofia_glue_tech_choose_port(tech_pvt)) != SWITCH_STATUS_SUCCESS) {
 		return status;

src/switch_core_session.c

@@ -288,8 +288,14 @@ SWITCH_DECLARE(switch_call_cause_t) switch_core_session_outgoing_channel(switch_
 				switch_channel_set_variable(peer_channel, SWITCH_B_SDP_VARIABLE, val);
 			}
 
-			if ((val = switch_channel_get_variable(channel, SWITCH_MAX_FORWARDS_VARIABLE))) {
-				switch_channel_set_variable(peer_channel, SWITCH_MAX_FORWARDS_VARIABLE, val);
+			val = switch_channel_get_variable(channel, SWITCH_MAX_FORWARDS_VARIABLE);
+
+			if (!switch_strlen_zero(val)) {
+				int forwardval =  atoi(val) - 1;
+				const char *max_forwards = switch_core_session_sprintf(session, "%d", forwardval);
+				switch_channel_set_variable(peer_channel, SWITCH_MAX_FORWARDS_VARIABLE, max_forwards);
+			} else {
+				switch_channel_set_variable(peer_channel, SWITCH_MAX_FORWARDS_VARIABLE, "70");
 			}
 
 			if (switch_channel_test_flag(channel, CF_BYPASS_MEDIA)) {