[OpenSER-Users] Is there OPTIONS keepalive in TCP?

[Bogdan-Andrei Iancu]

Hi Klaus,

I did some test last year with nathelper sending pings over TCP and it 
proofed to be non-functional. If the TCP connection is closed (from 
client side), the timer process will actually hang trying to open a TCP 
connection via NAT....

Regards,
Bogdan

Klaus Darilion wrote:
> Iñaki Baz Castillo schrieb:
>   
>> Hi, I register a X-Lite (TCP client) and a Twinkle (UDP client) behind NAT. I 
>> dissable STUN, ICE, keepalive, "discover external address", etc... in both.
>>
>> They send a REGISTER to my OpenSer with public IP so I enable OPTIONS pinging 
>> ifor both (I confirm that "location" table has the same cflags for the you 
>> entries and so, all is correct.
>>
>> But I just see a periodical SIP OPTIONS by UDP for Twinkle. Are they exist in 
>> case of TCP?
>>     
>
> Looks like this is a limitation of the natpinging. I would think it 
> should work with TCP/TLS too (useful to handle clients which close the 
> TCP connection after some time).
>
> klaus
>
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