Hello,
are you sure you got the sip reply for the request?
Apart of cseq number, all the other tokens are different, including the
via branch. Kamailio doesn't generate any callid or from-tag when using
sl_send_reply() or options_reply(), it reuses the ones from request.
if you still think it is the case of an issues, try:
- add xlog() before sending the reply printing the call-id, from-tag via
header and cseq header
- grab the pcap capture of such case
Send the syslog messages and the pcap file here on mailing list so we
can analyze.
Cheers,
Daniel
On 10/08/15 10:41, Jean-Marie Baran wrote:
> Hi,
>
> I am trying to get Kamailio working with a third party SIP provider.
> This provider pings Kamailio with OPTIONS messages, but Kamailio does
> not answer correctly: the Call-ID and the tags change where they
> should not. Here is an example:
>
> Third party SIP server:
>
> OPTIONS sip:false.sip.provider:5060 SIP/2.0
> Via: SIP/2.0/UDP 197.17.144.4:5060;branch=z9hG4bK8e45ac1463a
> From: <sip:197.17.144.4>;tag=1669836943
> To: <sip:false.sip.provider>
> Date: Fri, 07 Aug 2015 12:34:37 GMT
> Call-ID: a012e080-5c41a5ce-8e5-38512c6@197.17.144.4
> User-Agent: Cisco-CUCM10.5
> CSeq: 101 OPTIONS
> Contact: <sip:197.17.144.4:5060>
> Max-Forwards: 0
> Content-Length: 0
>
> Kamailio's answer:
>
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP
> 197.17.144.4:5060;branch=z9hG4bK93e5f072f5f;received=174.37.217.1
> From: <sip:197.17.144.4>;tag=298911055
> To: <sip:false.sip.provider>;tag=b27e1a1d33761e85846fc98f5f3a7e58.8c24
> Call-ID: 2defcb00-5c41aa17-93f-38512c6@197.17.144.4
> CSeq: 101 OPTIONS
> Server: kamailio (4.3.1 (x86_64/linux))
> Content-Length: 0
>
> You can see that the Call-ID change from
> "a012e080-5c41a5ce-8e5-38512c6" to "2defcb00-5c41aa17-93f-38512c6".
> Likewise, the From tag change ("1669836943" to "298911055"). What
> could be the reason for this ?
> Moreover I think Kamailio should add the field Allow (with
> INVITE,ACK,BYE,CANCEL,INFO,OPTIONS,REFER,SUBSCRIBE,NOTIFY), but it
> does not.
>
> I should mention that I had to modify /kamailio.cfg/ to have Kamailio
> answer to OPTIONS messages (I added *the code in bold*):
>
> if (*!is_method("OPTIONS") && *!mf_process_maxfwd_header("10")) {
> sl_send_reply("483","Too Many Hops");
> exit;
> }
>
> if(is_method("OPTIONS") && uri==myself && $rU==$null) {
> *#* sl_send_reply("200","Keepalive");
> *options_reply();*
> exit;
> }
>
> Maybe this hack replaces an expected behavior that I failed to
> see/configure ?
>
> Thanks,
> Jean-Marie.
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users@lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
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