[OpenSIPS-Users] 408 Request Timeout with UDP

[Nabeel]

I just discovered that the SIP client logs show an error message only on
the recipient side, not on the caller's side.  I missed this previously
because the caller's side log does not show any error:

java.lang.Exception: No DNS SRV or A results found for: 162.242.153.259
>  (IP address of OpenSIPS server).


I have the SRV records set on the actual hostname/domain, but it seems to
be looking for SRV at the actual IP address itself.

On 21 August 2015 at 17:57, Nabeel <nabeelshikder at gmail.com> wrote:

> The log doesn't show any errors when the Timeout occurs, it only shows
> this:
>
> opensips[1842]: ACC: call missed:
>> timestamp=1440174643;method=INVITE;from_tag=z9hG4bK04147190;to_tag=;call_id=
>> 424618310389 at 10.137.181.237;code=408;reason=Request Timeout
>>
>
>
> This seems to occur sporadically; some calls connect without problem but
> others don't; so perhaps it is a genuine timeout... maybe it simply longer
> to connect on some calls?
>
>
> On 21 August 2015 at 17:46, Nabeel <nabeelshikder at gmail.com> wrote:
>
>> Sorry to bring this up again, but I still get the 408 Request Timeout on
>> some calls.
>>
>> Isn't there just a way to increase the request timeout limit?
>>
>> Here is the trace:
>>
>> http://pastebin.com/jvCPGYDu
>>
>> There is even an ACK in the trace after the request timeout message, but
>> the call doesn't connect.
>>
>> On 7 August 2015 at 18:10, Bogdan-Andrei Iancu <bogdan at opensips.org>
>> wrote:
>>
>>> Indeed,
>>>
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developerhttp://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>
>>> wrote:
>>>
>>>> Hi Nabeel,
>>>>
>>>> Bogdan-Andrei Iancu
>>>> OpenSIPS Founder and Developerhttp://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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