[SR-Users] Proxying INVITE message without port information in R-URI

[Vikram Ragukumar]

Klaus,

> To me it seems that the SIP server also does some kind of NAT traversal:
> it puts the Contact IP in to the RURI but it sends the request to the
> IP:port from which the REGISTER was received (that's called NAT traversal).
>
> So, either fix the SIP server (make sure it adds the port as in the
> Contact header also to the RURI) or try a workaround:
>
> A woraround would be for example to put the received port in the Contact
> URI as an URI paramter. If the SIP server does not strip URI parameters
> as well, then you might be lucky and restore the port from the parameter
> in the RURI.
>
> For the URI-parameter workaround try the functions
> add_contact_alias() and handle_ruri_alias():
> http://www.kamailio.org/docs/modules/stable/modules_k/nathelper.html#id2764276

Ok, will try your suggestion for the workaround.

Thanks for all the help.

Regards,
Vikram.