Re: [SR-Users] Kamailio not receiving BYE request

Hi, When I'm adding record_route() to kamailio config , Acks and BYE messages are received by kamailio , yet connection between the client and the gateway is not properly established meaning that the gateway keeps waiting for acknowledgement and then network failure message appear. Below is the status of SIP phone on the gateway side : Session ID: 67 Session Type: SIP Call Type: SIP Direction: Incoming Address: 192.168.110.181 : 5060 Dial String: sip:5000@192.168.110.181 Dialed as: Respondent: 5000 Program: X-Lite Program version: Status: Awaiting acknowledgement Audio codec (in) : Audio codec (out): PCMU Regards, Ali -----Original Message----- From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Alex Balashov Sent: Thursday, May 28, 2015 3:44 PM To: sr-users(a)lists.sip-router.org Subject: Re: [SR-Users] Kamailio not receiving BYE request Hi Ali, I was unable to open your client trace, but the Kamailio trace worked: client-trace.pcap: pcap-ng capture file - version 1.0 kamailio trace.pcap: data Anyway, looking at the Kamailio trace, you will see that the BYE is going straight from 192.168.26.3 (client) to 192.168.26.4 (gateway), bypassing Kamailio. This is the normal, default behaviour for a proxy. A BYE is a kind of request called a sequential request, which means it occurs within a dialog. After the initial INVITE transaction is set up through the proxy, sequential requests such as end-to-end ACKs, BYEs, reinvites, etc. flow directly between the endpoints, using the network and transport-layer reachability information in their respective Contact headers. If you want these sequential requests to traverse Kamailio, you must add a Record-Route header to the initial INVITE before forwarding it. This tells the two endpoints to pass sequential requests through Kamailio as well: if(is_method("INVITE")) { ... record_route(); ... if(!t_relay()) sl_reply_error(); } -- Alex -- Alex Balashov | Principal | Evariste Systems LLC 303 Perimeter Center North, Suite 300 Atlanta, GA 30346 United States Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users