[Users] Re: [Devel] OperSER can't handle a maddr tag in the RURI

[Dr. Rodney G. McDuff]

Hi Daniel
Daniel-Constantin Mierla wrote:
> Using subst_uri(), as you discovered, is the tweak to make it working
> (see the mailing list archives). However, the contact in reply must be
> handled by the end device (caller). The proxy should take care in case
> of NAT.
But would it be better to hide all these shenanigans from the user and
just interpret the maddr tag instead of rewriting it similar to how
asterisk does it:
>From chan_sip.c:
> /*! \brief  set_destination: Set destination from SIP URI ---*/
> static void set_destination(struct sip_pvt *p, char *uri)
> {
>
<snip>
>         /* Got the hostname:port - but maybe there's a "maddr=" to
> override address? */
>         maddr = strstr(h, "maddr=");
>         if (maddr) {
>                 maddr += 6;
>                 hn = strspn(maddr, "0123456789.") + 1;
>                 if (hn > sizeof(hostname)) hn = sizeof(hostname);
>                 ast_copy_string(hostname, maddr, hn);
>         }


**
>
> Cheers,
> Daniel
>
> On 03/06/06 04:02, Dr. Rodney G. McDuff wrote:
>> I am try to get Windows Messenger v5.1 to play nicely with other UAs and
>> SER/OpenSER and Asterisk. One of the problems that is confounding me is
>> WM5 non-standard contact header which is of the form:
>>
>>     Contact:
>> <sip:user at domain.net:5060;maddr=xxx.xxx.152.57;transport=tcp>;proxy=replace.
>>
>>
>> The SIP RFC say that a maddr URL tag overrides the host part of the url
>> (at least for the Via header). However when a UA uses this contact to
>> send an ACK or BYE back to the WM5 UA , OpenSER does seem to be able to
>> route it to xxx.xxx.152.57. If fact Openser pops the route header off
>> (which contains the IP for the proxy) into the RURI and the response
>> goes nowhere. (See attached trace)
>> When I rewrite the contact in the config file but put the following code
>> in route[0]:
>>
>>  

-- 
Dr. Rodney G. McDuff                 |Ex ignorantia ad sapientiam
Manager, Strategic Technologies Group|    Ex luce ad tenebras
Information Technology Services      |
The University of Queensland         |
EMAIL: mcduff at its.uq.edu.au          |
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