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

[Bogdan-Andrei Iancu]

Right, but is a bit delicate as from routing script (SIP level) we start 
playing with the transport layer :
    - first will generate some confusion
    - it will become more difficult to script down your configuration.

I was paying some second thoughts to some discussions we had some time 
ago, about embedding some automation for some very standard behaviours, 
in order to reduce the scripting complexity.....
I will attack this issue during the next week IRC meeting.

Regards,
Bogdan


Klaus Darilion wrote:
>
>
> Bogdan-Andrei Iancu schrieb:
>> 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....
>
> This brings me to an INO very useful feature request I mentioned some 
> time ago: For certain kind of scenarios it would be useful to tell 
> openser to "not open a new TCP connection if there is no existing TCP 
> connection" - e.g. by having a flag somewhere.
>
> Use cases: natpinging, requests forwarded to TCP clients behind NAT 
> (e.g. after lookup), ....
>
> regards
> klaus
>
>
>>
>> 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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>>
>