[SR-Users] Terminating PCSCF unresolvable request URI (Kamailio IMS Websockets)

[Daniel-Constantin Mierla]

Hello,

the unresolvable destination should be triggered when the dns server
failed to resolve the hostname in r-uri and in this case it's clear it's
an invalid one being a contact for webrtc. You are not handling
correctly the devices connected over websocket, you have to deal with
them as with devices behind the nat, so you add a contact alias and
handle the parameter in r-uri for requests within dialog -- look at
default kamailio.cfg how the nat traversal part is done.

Cheers,
Daniel


On 18/10/16 22:40, Serhat Guler wrote:
> Dear all,
>
> I am trying to make a call between 2 webrtc clients(sipml5) using my
> kamailio IMS setup. The invite request fails at the terminating PCSCF
> with error code "Status: 478 Unresolvable destination (478/TM)". I
> have traced the packages and saw that the package that arrives at the
> terminating PCSCF has an unresolvable request URI due to the websocket
> connection.
>
> The package being sent from terminating ICSCF to SCSCF has the
> "Request-URI: sip:bob at net1.test"
> The package from terminating SCSCF to terminating PCSCF has the
> "Request-URI:
> sip:bob at df7jal23ls0d.invalid;rtcweb-breaker=yes;transport=ws"
>
> I guess the terminating SCSCF replaces the request URI with the one it
> stored during the registration process, but the terminating PCSCF
> cannot resolve the host name&port number; therefore, it reports back
> "Unresolvable destination". Is that really the case happening in here
> ? How can I get over this problem ? Any ideas are welcome.
>
> Cheers,
> Serhat
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com

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