[OpenSIPS-Users] tcp keep-alive time

[Bogdan-Andrei Iancu]

George,

If the TCP conn closes, it is not much you can do from the server 
side...you cannot open a TCP conn behind NAT. You have to wait for the 
UAC to re-connect again.

About your manual UDP defrag - I do not think it is a good it - the UDP 
stack must to that for you, you cannot simulate it on top of datagram.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 17.10.2014 14:05, george wu wrote:
> Bogdan-Andrei:
>
> Thank you very much for so many helps.
> Yes, tcp_connection_lifetime.
> As you said before, udp scale up very well. But tcp is not.
> However, I have no choice other than tcp. If the tcp get closed often, 
> is it similar to udp?
>
> Recently I modify the udp_server.c so that I defragment the udp 
> package manually.
> (For ice, the packet is about 1700+ bytes.)
> This approach works 80% of time.
>
> However the udp packages sometimes come out of order
> which makes the linphone parser gets a coredump.
> I googled a lot, some router's mtu is 1500 (payload 1472), some 1400. 
> the only requirement is minimum 576 bytes.
> So I finally give up the udp. I think tcp is the only reliable way to 
> deliver big packet.
> Unless your packet is less than 576 bytes. But my packet is 1700 bytes.
>
> George
>
>
>
>
> At 2014-10-17 17:18:43, "Bogdan-Andrei Iancu" <bogdan at opensips.org> wrote:
>
>     Hi Geroge,
>
>     You want to change the keepalive or the lifetime of the TCP conn ?
>
>     As it sounds to me you are more looking for lifetime (to have
>     closed asap):
>     http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc91
>
>     Regards,
>
>     Bogdan-Andrei Iancu
>     OpenSIPS Founder and Developer
>     http://www.opensips-solutions.com
>
>     On 17.10.2014 02:44, george wu wrote:
>>     Hi, guys:
>>
>>     How can I adjust the global tcp keep alive time? what's the
>>     default in opensips?
>>     I want it to close as soon as possible so that tcp deployment can
>>     scale.
>>
>>     George Wu
>>
>>
>>
>>
>>
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>
>
>

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