[OpenSER-Users] Relaying to outbound proxy

[Adrian A]

Hi Andreas,

I have set the configuration as you mentioned below but it does not seem to
help. Let me give you some more details about what I'm trying to accomplish.

In my setup, there are 2 proxies: Proxy A and Proxy B. Depending on the
physical location, some users register to Proxy A and some to Proxy B. The
openser database is shared between the two proxies.

Here is the call scenario that I'm looking to get working:

1. User Bob registers to Proxy A with a particular NAT binding
2. External call comes in to Proxy B for user Bob.
3. Proxy B tries to contact Bob at the location from the usrloc table but
because the NAT binding does not know anything about Proxy B's IP, the
request is not passed trough.

What I need is for Proxy B to send the request to Proxy A so this can then
relay to client.

I have added the modparam settings on both proxies (since both can act as
both outbound proxies and registrar for different users) and added inside
the route:

...
If (uri == myself) {
   ...
   If (is_method("REGISTER")) {
        add_path_received();
        ...

I would have expected that this would add something to the 'path' value in
the location table, but this is still NULL after user registers.

Thanks,
Adrian


On Mon, Mar 17, 2008 at 7:57 AM, Andreas Granig <agranig at sipwise.com> wrote:

> Hi Adrian,
>
> I wrote the path module for exactly the scenario you describe here, so
> it should work for you as well :)
>
> So, on your outbound proxy you have to set:
>
> loadmodule "path.so"
> modparam("path", "use_received", 1)
>
> As well as something like the following in your routes:
>
> if(method=="REGISTER") { add_path_received(); }
>
> An on your registrar/proxy, you have to set:
>
> modparam("registrar", "use_path", 1)
> modparam("registrar", "path_mode", 0)
> modparam("registrar", "path_use_received", 1)
>
> Cheers,
> Andreas
>
>
>
> Adrian A wrote:
> > Does anyone know how to use the Path functions or has an alternative
> > method of solving this issue with multiple proxies?
> >
> > Thanks in advance.
> >
> >
> > On Sat, Mar 15, 2008 at 7:45 PM, Iñaki Baz Castillo <ibc at aliax.net
> > <mailto:ibc at aliax.net>> wrote:
> >
> >     El Domingo, 16 de Marzo de 2008, Adrian A escribió:
> >      > I've looked over the RFC and the module and while they describe a
> >     slightly
> >      > different scenario (with a load balancer and separate
> >     registrars), it seems
> >      > like it should work.
> >      >
> >      > I've added the required parameters to the config:
> >      >
> >      > modparam("registrar", "use_path", 1)
> >      > modparam("registrar", "path_mode", 0)
> >      > modparam("registrar", "path_use_received", 1)
> >      > modparam("path", "use_received", 1)
> >      >
> >      > Then, in my auth section, I store the path:
> >      >
> >      > if (is_method("REGISTER")) {
> >      >             add_path();
> >      >
> >      > This does not seem to do anything however, the proxy still
> forwards
> >      > directly to the client instead of sending it to the proper
> >     outbound proxy.
> >      > I looked in the location table and I see path is set to NULL so
> >     unless this
> >      > is stored in some other place, the proxy would not know where to
> >     send it
> >      > anyway.
> >      >
> >      > Have you used this? Am I doing something wrong? I could not find
> >     on this
> >      > list or anywhere a sample openser config that uses it...
> >
> >     Sorry, I've not used it, but I'm 100% sure that it's what you need.
> >
> >
> >     --
> >     Iñaki Baz Castillo
> >
> >     _______________________________________________
> >     Users mailing list
> >     Users at lists.openser.org <mailto:Users at lists.openser.org>
> >     http://lists.openser.org/cgi-bin/mailman/listinfo/users
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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>
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