[OpenSIPS-Users] Location table and received field

[Bogdan-Andrei Iancu]

Hi Mauro,

The received field is used for NAT traversal purposes. As the contact 
value cannot be altered (kept exactly as sent by client during 
registration) and if UAC is natted , the contact is private, so 
unusable, the USRLOC module keeps the public address of NAT in the 
"received" field in order to be able to send back messages.
During lookup(location), the contact will be placed in RURI and (if 
present) the received will be used as outboundproxy ($du - destination uri)

Regards,
Bogdan

Mauro Davi' wrote:
>
> Hi All,
>
> I would to know how the save function store the received field in the 
> location table.
>
> With same client this field is present correctly with the received 
> SIP:IP:PORT value, but in some circumstances this field is NULL.
>
> Could anyone can tell me why?
>
> I have a SIP server behind a SIP Proxy e when the server invoke the 
> lookup function seems that the Destination URI isn’t always correct.
>
> Thanks in advance
>
> MD
>
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