[OpenSER-Users] Is there OPTIONS keepalive in TCP?
Klaus Darilion
klaus.mailinglists at pernau.at
Fri Feb 15 14:17:16 CET 2008
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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>
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