Hello,

I did a quick test and all looks fine, ports are set in via and record-route, in my config I have:

    record_route();

    $fs="udp:127.0.0.1:5080";
    $du = "sip:127.0.0.1:9";
    t_relay();
    exit;

Then sending an OPTIONS resulted in the trace shown below.

Cheers,
Daniel

U 2017/12/11 17:14:47.108430 127.0.0.1:56729 -> 127.0.0.1:5060
OPTIONS sip:test@127.0.0.1 SIP/2.0.
Via: SIP/2.0/UDP 192.168.178.84:62516;branch=z9hG4bK.3aaddf68;rport;alias.
From: sip:sipsak@192.168.178.84:62516;tag=16d1c24.
To: sip:test@127.0.0.1.
Call-ID: 23927844@192.168.178.84.
CSeq: 1 OPTIONS.
Contact: sip:sipsak@192.168.178.84:62516.
Content-Length: 0.
Max-Forwards: 70.
User-Agent: sipsak 0.9.7pre.
Accept: text/plain.
.


U 2017/12/11 17:14:51.010251 127.0.0.1:5080 -> 127.0.0.1:9
OPTIONS sip:test@127.0.0.1 SIP/2.0.
Record-Route: <sip:127.0.0.1:5080;r2=on;lr>.
Record-Route: <sip:127.0.0.1;r2=on;lr>.
Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK61bd.b2882fea15c488761489f8ef588efbe1.0.
Via: SIP/2.0/UDP 192.168.178.84:62516;received=127.0.0.1;branch=z9hG4bK.3aaddf68;rport=56729;alias.
From: sip:sipsak@192.168.178.84:62516;tag=16d1c24.
To: sip:test@127.0.0.1.
Call-ID: 23927844@192.168.178.84.
CSeq: 1 OPTIONS.
Contact: sip:sipsak@192.168.178.84:62516.
Content-Length: 0.
Max-Forwards: 69.
User-Agent: sipsak 0.9.7pre.
Accept: text/plain.
.

Hello all,

I have the following issue in my configuration, tested with 5.2.0-rc1 so far:

At some point, I set the $fs pseudovariable to force a request to be relayed through a specific socket. Although this is honoured by kamailio (i.e. the request does indeed leave the kamailio host from the respective socket), the port number is not added to the Via and RR headers. As a result, all replies to the request, as well as all subsequent requests from the other SIP UA are relayed to the default port, 5060. Here's an example:

SIP UAC to kamailio:

INVITE 192.168.1.1:5060 ---> 192.168.1.254:5060

Kamailio to UAS ($fs is set):

INVITE 2.2.2.2:5066 ---> 3.3.3.3:5060

Topmost Via in request relayed by kamailio is:

SIP/2.0/UDP 2.2.2.2;branch=aaaaaaaaaaaaaa    <- port 5066 is not added

Topmost RR in request relayed by kamailio is:

<sip:2.2.2.2;r2=on;lr;did=bbbbbbb;nat=yes>    <- port 5066 is not added

RESULT: Reply from UAS is sent to 2.2.2.2:5060

Is this behaviour valid? Am I missing anything? Kamailio is configured to listen on both sockets on IP 2.2.2.2, namely: a) udp:2.2.2.2:5060 and b) 2.2.2.2:5066. Thanks.

BR,

George

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