Fix session refresh during onging call

Author: herlesupreeth

ims_base/Dockerfile

@@ -38,8 +38,8 @@ RUN apt-get update && \
 
 # Fetch Kamailio code
 RUN mkdir -p /usr/local/src/ && cd /usr/local/src/ && \
-	git clone https://github.com/kamailio/kamailio && \
-	cd kamailio && git checkout 913dce948729cdd0f9e45e7d71da8c3936719c58
+	git clone https://github.com/herlesupreeth/kamailio && \
+	cd kamailio && git fetch && git checkout fix_session_refresh_during_an_ongoing_call
 
 # Build and Install Kamailio
 RUN cd /usr/local/src/kamailio && make cfg

pcscf/route/mo.cfg

@@ -469,7 +469,8 @@ onreply_route[MO_indialog_reply] {
 		route(NATMANAGE);
 
 #!ifdef WITH_RX
-	if (t_check_status("180|183|200") && has_body("application/sdp") && !is_method("PRACK")) {
+	# Rx AAR for in-dialog requests with SDP or Session refresh via UPDATE
+	if ((t_check_status("180|183|200") && has_body("application/sdp") && !is_method("PRACK")) || (is_method("UPDATE"))) {
 		if (t_is_retr_async_reply()) {
 			xlog("L_DBG", "Dropping retransmitted reply which is still currently suspended\n");
 			drop();

pcscf/route/mt.cfg

@@ -180,7 +180,8 @@ onreply_route[MT_indialog_reply] {
 		route(NATMANAGE);
 
 #!ifdef WITH_RX
-	if (t_check_status("180|183|200") && has_body("application/sdp") && !is_method("PRACK")) {
+	# Rx AAR for in-dialog requests with SDP or Session refresh via UPDATE
+	if ((t_check_status("180|183|200") && has_body("application/sdp") && !is_method("PRACK")) || (is_method("UPDATE"))) {
 		if (t_is_retr_async_reply()) {
 			xlog("L_DBG", "Dropping retransmitted reply which is still currently suspended\n");
 			drop();