[Devel] Questions about usrloc module

[Justin Pearce]

Thanks for the reply.
I made a mistake in not specifying my problem completely (stupid me :(
). Doing fix_nated_contact() works great for situations where the
clients are on separate nats (if they have ports mapped in the firewall
for each UA) or even if they don't have a nat at all (for this
particular UA). In fact, I use it extensively with great success for
those situations.

Where it becomes a problem is where the UAs are behind the same nat with
no ports forwarded and the server is outside that nat (this is
apparently a feature that my boss promised in our services to a client,
but failed to tell our dev team until last week...after the first
clients signed on :( ). Because we don't want to point the UAs at the
firewall (which has not forwarded ports), I am trying to get one UA to
point directly at the other UA. The UAs have no problem being pointed at
one another IF they have the CORRECT ports specified. Because the UAs
can't seem to send REGISTERs on the correct port, the server points one
UA to the wrong signaling port on the other UA and the call fails.

This is why I was looking into rewriting the Contact with the know port
5060 instead of the one the client provides.

Any other suggestions?

Justin Pearce

-----Original Message-----
From: Atle Samuelsen [mailto:clona at cyberhouse.no] 
Sent: Sunday, August 06, 2006 12:51 AM
To: Justin Pearce
Cc: devel at openser.org
Subject: Re: [Devel] Questions about usrloc module


Hi Justin, 

try this : 

load the nathelper module.

do : 

if(method=="REGISTER"){
        fix_nated_contact();
};

save("location");

iThis should save a "fixed" version of the contact :-)

- Atle
* Justin Pearce <justinp at pricevideo.com> [060805 23:46]:
> I have been looking into rewriting the port that the contact record
has,
> because the UA we are using can't seem to use the right port
> when initially registering (no, there is no option to use a different
UA
> :( ). From what I have read in the users mailing list, it seems that
you
> can
> try to rewrite the Contact header but the rewritten header is not
saved
> to the location on the server. So, no matter how you rewrite it,
> the contact record gets set to the original header.
> 
> The only solution I can see is to write some sort of module to allow
> access to the functions in the usrloc module, which brings me to the
> topic of this
> message. Would you guys have any suggestions on the use of the
> ul_update_ucontact function? I figure my best bet is to parse the sip
> message to grab the URI and other information, rewrite the URI in my
> module
> with the provided port and then call the ul_update_ucontact function
to
> update the record. Does the ul_update_ucontact function effect
contacts
> already saved in a domain (like "location") and would it also update
the
> database records? The documentation seems a little confusing to me in
> this area.
> 
> Any help or recommendations would be helpful.
> 
> Thanks!
> Justin Pearce
> 
> 
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