[Kamailio-Users] Pretty basic Presence question

Mahesh Paolini-Subramanya mahesh at aptela.com
Thu May 28 12:08:43 CEST 2009


force_rport() doesnt do the trick - it was one of the first things i  
tried :-)  All it seems to do is add 'rport=...' to the Via line on  
the returned message, not actually *send* to that port.  Its clearly  
something ridiculously basic.
Also, fix_nated_contact() doesnt work entirely either.  What it *does*  
do is ensure that the NOTIFY (from the Sbc to the fone) goes to $sp: 
$si...

Incidentally, if i stick a t_newtran()/t_release around my REGISTER  
handling section, i get the same behavior, i.e., the responses go to  
5060 instead of the source port (i *am* using force_rport() there).   
Is that a Clue?

cheers

p.s.

The difference i see is as follows

A) Using the following basic code,  the response  (i've omitted most  
of the message)

    if (!t_newtran()) {
         sl_reply_error();
         return(-1);
     };

     if (is_method("SUBSCRIBE")) {
         handle_subscribe();
         t_release();
     };

U 2009/05/28 05:56:44.260579 1.2.3.4:2352 -> 5.6.7.8:5060
SUBSCRIBE sip:mm1 at 5.6.7.8 SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.10:5060;branch=z9hG4bK537dd37BF6A3AE6.
Contact: <sip:mm1 at 10.0.0.10:5060>.


U 2009/05/28 05:56:44.264687 5.6.7.8:5060 -> 1.2.3.4:5060
SIP/2.0 202 OK.
Via: SIP/2.0/UDP  
10.16.0.168:5060;branch=z9hG4bK537dd37BF6A3AE6;received=1.2.3.4.


B) If I use force_rport(), as follows, I get

    if (is_method("SUBSCRIBE")) {
         force_rport();
         handle_subscribe();
         t_release();
     };

U 2009/05/28 05:56:44.264687 5.6.7.8:5060 -> 1.2.3.4:5060
SIP/2.0 202 OK.
Via: SIP/2.0/UDP  
10.16.0.168 
:5060;branch=z9hG4bK537dd37BF6A3AE6;rport=2352;received=1.2.3.4.


---
Mahesh Paolini-Subramanya
CTO,  Aptela Inc.
(703.386.1500 x9100)
http://www.aptela.com

On May 27, 2009, at 6:29 PM, Mahesh Paolini-Subramanya wrote:

> El Jueves, 28 de Mayo de 2009, Mahesh Paolini-Subramanya escribió:
>> I'm trying to setup an extremely basic PRESENCE/BLF environment.
>> However, when I call handle_subscribe(), the message gets sent to  
>> $si:
>> 5060, *not* $si:$sp
>
> I assume you mean "the response gets sent...", right?
>
>
>> Any ideas?  Should I be doing something with nat_traversal.co (don't
>> see what, but worth asking...)
>>
>> The relevant portion of kamailio.cfg is
>
> Add "force_rport()" here.
>
>>    if (!t_newtran()) {
>>         sl_reply_error();
>>         return(-1);
>>     };
>>
>>     if (is_method("SUBSCRIBE")) {
>>         handle_subscribe();
>>         t_release();
>>     };
>>
>
>
>
> -- 
> Iñaki Baz Castillo <ibc at aliax.net>
>
> _______________________________________________
> Kamailio (OpenSER) - Users mailing list
> Users at lists.kamailio.org
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