[SR-Users] Record-Route and received/rport parameters

[Asgaroth]

This would not work if I dont have access to the proxy that is 
advertising a private address in the record-route header, thanks for the 
tip though.



On 03/05/18 15:26, Amar Tinawi wrote:
> You may introduce advertise command  in the configuration files when 
> defining the interfaces
>
>
> Like this way :
> listen=private ip  advertise public ip
>
> On Thu, May 3, 2018, 4:52 PM Asgaroth <00asgaroth00 at gmail.com 
> <mailto:00asgaroth00 at gmail.com>> wrote:
>
>     Hi All,
>
>     I've come accros a scenario where a proxy is sitting on a private
>     address range and inserts a record-route specifying the the
>     private address.
>
>     This causes issues whereby the BYE to an INVITE attempts to relay
>     to the
>     private address defined in record-route.
>
>     I was wondering, if we were inject a received and rport parameter
>     into
>     the record-route header of the original invite, whould kamailio relay
>     the response (BYE) to the receive/rport destination instead of the
>     uri
>     defined in the record-route header.
>
>     As an example, initial invite comes in with a record-route as follows:
>
>     Record-Route: <sip:172.17.0.2:5062;lr;ftag=b4551d29>
>
>     If we injected received and rport as follows:
>
>     Record-Route:
>     <sip:172.17.0.2:5062;lr;ftag=b4551d29;rport=33429;received=212.172.2.212>
>
>     and relayed the message to the B2B.
>
>     Then, I assume, when the B2B creates its BYE message, the Route
>     header
>     should look like this:
>
>     Route:
>     <sip:172.17.0.2:5062;lr;ftag=b4551d29;rport=33429;received=212.172.2.212>
>
>     Once this hits the kamailio instance to relay to the last route
>     header
>     as mentioned above, would it set $du to received:rport like it
>     does with
>     Via headers?
>
>     Thanks
>
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