[OpenSIPS-Users] How to overcome SIP ALG on Wi-Fi routers

[Russell Treleaven]

Look for the fragmentation flag.
On May 17, 2016 1:08 PM, "Nabeel" <nabeelshikder at gmail.com> wrote:

> In that case, the answer to your question seems to be that the UDP packets
> did not reach the OpenSIPS server, because nothing was added to the
> OpenSIPS logs using debug level 4. All of this seems to point to the cause
> being UDP packet fragmentation. Is this correct?
> On 17 May 2016 4:24 pm, "Bogdan-Andrei Iancu" <bogdan at opensips.org> wrote:
>
>> The TCP/IP stack of your server may decide to drop an UDP packet if it
>> cannot re-assemble it correctly (like not all the IP fragments were
>> received).
>> In such a case, you see the IP packets (carrying the fragments) on
>> network level, but they are never delivered at application level.
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>
>> On 17.05.2016 16:05, Nabeel wrote:
>>
>> The next question - is this INVITE reaching your opensips script ? to be
>>> sure that the OS delivers the UDP packet to the opensips application.
>>
>>
>> I don't have any firewall on my server. Why would the UDP packet get
>> blocked between entering the server and reaching opensips script? The
>> opensips server is running without errors. Other calls work fine.
>>
>>
>>
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