[OpenSIPS-Users] Comparing client_nat_test with nat_uac_test

[Bogdan-Andrei Iancu]

Hi Dan,

Dan Pascu wrote:
>
> On 1 Jun 2009, at 15:12, Thomas Gelf wrote:
>
>> Bogdan-Andrei Iancu wrote:
>>>> test 8 (search RFC1918
>>>> addresses in the SDP payload) has no equivalent in client_nat_test().
>>
>>> again, I do use this use this test, but not for detecting the private
>>> IPs, but public once - this is useful when doing chains of RTPproxys +
>>> mediaproxy + whatever other media relay.
>>> ...
>>> here, to avoid deadlock between the 2 media relays, you detect if a
>>> public IP is in the SDP and start using that IP right away instead of
>>> waiting to receive traffic (in order to discover the RTP peer).
>>
>> That's a good example, thank you. Could such a "deadlock" still happen
>> with current Mediaproxy implementations?
>
> No. Mediaproxy doesn't suffer from this problem. You can chain as many 
> mediaproxy relays as you want, they will simply work without any need 
> to do anything in the proxy configuration. The only requirement is 
> that all chained media relays have a public IP address.
>
Out of curiosity....How does it work? typically you have to wait to 
receive traffic in order to be discover the end RTP points and to start 
sending. So, how MP proceed? does it automatically trust the received IP 
in SDP till incoming traffic updates the end peer info? or ?

Regards,
Bogdan