[SR-Users] Edge Proxy, how is it supposed to work?

[Daniel-Constantin Mierla]

Hello,

first is important to clarify if you have clients supporting the
"SIP-Outbound" extension, which is only for TCP/TLS.

That is different than the (classic) "Outbound Proxy" which got into the
common speaking of SIP in the past.

A "classic" Outbound Proxy has to do Path if it routes REGISTER requests.

Cheers,
Daniel

On 14/08/15 17:42, Daniel Tryba wrote:
> The documentation for outbound contains sample configs for edge proxy and 
> registrar configs:
> http://kamailio.org/docs/modules/4.2.x/modules/outbound.html
>
> I tried to implement these but I don't see anything happen concerning the 
> outbound module. What is supposed to happen to make it work?
>
> The main problem I have is that calls for the endpoints coming in from the 
> registrar fail to get past the loose_routing check and fail with a 500 in the 
> default case of the switch. the R-URI contains username/externalip/port from 
> the endpoint, there is 1 route header (containing the edgeproxy ip) but no 
> username/flow-token. So per 
> http://kamailio.org/docs/modules/4.2.x/modules/rr.html#loose-route-id
> loose_routing returns false:
> "If a Route: header is found, the function returns 1 and behaves as described 
> in section 16.12 of RFC 3261. There is only one exception: If the request is 
> out-of-dialog (no to-tag) and there is only one Route: header indicating the 
> local proxy, then the Route: header is removed and the function returns 
> FALSE."
>
> How should the Path header look when registering? According to 
> http://kamailio.org/docs/modules/4.2.x/modules/path.html#idp3043008
> there should be a flowtoken inserted, this is not the case. Just a plain 
> Path: <sip:ip;lr> is added. So when is outbound required?
>
> Can anybody confirm that the examples work?
>
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-- 
Daniel-Constantin Mierla
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