[OpenSIPS-Users] 408 Request Timeout with UDP

[Bogdan-Andrei Iancu]

Indeed,

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

On 07.08.2015 20:08, Nabeel wrote:
> You mean like this, right?
>
> if (is_method("REGISTER"))
>
> {
> if (   0 ) setflag(TCP_PERSISTENT);
>
> setbflag(SIP_PING_FLAG);
>
> if (!save("location"))
> sl_reply_error();
>
> exit;
> }
>
>
>
> On 7 August 2015 at 17:52, Bogdan-Andrei Iancu <bogdan at opensips.org 
> <mailto:bogdan at opensips.org>> wrote:
>
>     Hi Nabeel,
>
>     Bogdan-Andrei Iancu
>     OpenSIPS Founder and Developer
>     http://www.opensips-solutions.com
>
>     On 07.08.2015 19:39, Nabeel wrote:
>>     [........]
>>     Bogdan,
>>
>>     Regarding UDP, I realised that the UDP port could not be in
>>     LISTEN state and this was probably preventing my server from
>>     fully opening that port.  Running nmap on that port showed result
>>     "open|filtered", unlike with TCP which showed fully open.  I am
>>     not running any firewalls on my server, so this seems to be the
>>     default behaviour of my network.
>     A bidirectional traffic through the NAT will keep the NAT pinhole
>     open, while a unidirectional one may not. This is the advantage of
>     the SIP pinging versus simple UDP pinging.
>>
>>     I would like to clarify one thing.  You mentioned adding
>>     setbflag(SIP_PING_FLAG) before doing save(), but in my config
>>     file I don't see save() anywhere, there is only this line: "if
>>     (!save("location"))".  Where exactly do I add this line?
>     exactly.
>
>     Regards,
>     Bogdan
>
>

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