[OpenSIPS-Users] Wrong Contact in location table

[Răzvan Crainea]

Hi, Dragomir!

If you simply do fix_nated_register() on the REGISTER messages, all 
these will be sorted out. Moreover, it's actually not correct to change 
the contact of the user, because in the SIP message it might expect to 
have exactly what he sent.
When using fix_nated_register(), there is another field (called 
Received) that stores the actual IP and port where the REGISTER came 
from, and when an invite comes in, it is automatically set by the 
lookup() function in the DST uri, without changing the contact (the 
contact may still be private).

So simply calling fix_nated_register() should fix this issue for all 
scenarios.
I initially though that you were using the Contact from something else 
and you really need that value there.

Best regards,

Răzvan Crainea
OpenSIPS Developer
www.opensips-solutions.com

On 11/03/2017 09:36 PM, Dragomir Haralambiev wrote:
> Hi,
>
> Why I need the real IP and port in location table?
>
> Now I make only outgoing call. Everything works fine on the following 
> scenario.:
> User -----> Opensips ------> ITSP
>
> If I not have real IP in location table incoming calls not be implemented.
> ITSP ----> Opensips ---->?
>
> Opensips get IP from location table and try to send call. But in 
> location table have not real IP.
> I see how the Opensips try to send call to 192.168.2.34.
>
> This is the main problem.
>
> 2017-11-03 11:45 GMT+02:00 Răzvan Crainea <razvan at opensips.org 
> <mailto:razvan at opensips.org>>:
>
>     Unfortunately I just realised that you cannot change the Contact
>     header for this scenario.
>     And to be honest I don't really understand why you are trying to
>     change it - if you need the real IP and port, you can take them
>     from the received field.
>
>     Best regards,
>
>     Răzvan Crainea
>     OpenSIPS Developer
>     www.opensips-solutions.com <http://www.opensips-solutions.com>
>
>     On 11/02/2017 11:43 PM, Dragomir Haralambiev wrote:
>>     Hi,
>>
>>     Here is part of my script:
>>     ....
>>     modparam("registrar", "mcontact_avp", "$avp(register)")
>>     .....
>>
>>         if (t_check_status("2[0-9][0-9]"))  {
>>     $log_level = 5;
>>     script_trace( 1, "$rm from $si, ruri=$ru, ct=$ct.fields(uri)
>>     avp(register)=$avp(register)", "me");
>>     route(save_location);
>>                            .......
>>         }
>>
>>     You can see log here:
>>     https://pastebin.com/WWQ9Mmh4
>>
>>     Here is the replacement contact:
>>
>>     DBG:registrar:build_contact: created Contact HF: Contact:
>>     <sip:55595009 at 192.168.22.138:5062
>>     <http://sip:55595009@192.168.22.138:5062>>;expires=360
>>     DBG:registrar:save: replacing contact uri
>>     [sip:55595009 at 188.23.232.10:1043
>>     <http://sip:55595009@188.23.232.10:1043>] with
>>     [sip:55595009 at 192.168.22.138:5062
>>     <http://sip:55595009@192.168.22.138:5062>]
>>
>>     How to stop replacing contact from 188.23.232.10:1043
>>     <http://188.23.232.10:1043> to 192.168.22.138:5062
>>     <http://192.168.22.138:5062> ?
>
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