[Freeswitch-users] Reasons for a SIP/2.0 400 Bad Request ?

[Charlie Orford]

Hmm it doesn't look like it is a fragmentation problem. Same "400 Bad 
Request" response even with the INVITE at 995 bytes:

http://pastebin.freeswitch.org/17868
http://pastebin.freeswitch.org/17867

FYI, issuing "ping -f -l 1470 my.fs.server.com" from a windows 
workstation on the same network as the phone goes through ok (so I think 
this means as long as the INVITE packet is 1470 bytes or less, it should 
not get fragmented).

Is there anything else I can debug to track this down?

Charlie


On 24/11/2011 14:59, chrisbware at interfree.it wrote:
> Your INVITE is 1672 bytes. Some router split packet over 1500 bytes. To test if this is the problema, disable all codecs leaving only "basic codecs" as Aastra call them (g711a,g711u,g729) and disable ice. Packet should be smaller: if the problem is fixed in this way, packet fragmentation is the cause.
>
>
> -----Messaggio originale-----
> Da: Charlie Orford<charlie.orford at attackplan.net>
> Inviato il: 24 Nov 2011 - 13:47
> A: FreeSWITCH Users Help<freeswitch-users at lists.freeswitch.org>
>
>
> Hi Chris,
>
> I've increased the debugging and taken a new trace:
>
> http://pastebin.freeswitch.org/17864
>
> And here is the output of tport_sip.log:
>
> http://pastebin.freeswitch.org/17865
>
> A person on the #freeswitch IRC channel suggested the problem might be
> due to packet fragmentation?
>
> Charlie
>
>
> On 24/11/2011 14:29, chrisbware at interfree.it wrote:
>> I suspect problem is on SDP but we can't see it on pastebin.
>> -----Messaggio originale-----
>> Da: Charlie Orford
>> Inviato il: 24 Nov 2011 - 10:17
>> A: FreeSWITCH Users Help
>>
>>
>> Hi list
>>
>> I have done some googling but cannot find much info about what causes FS
>> to send a SIP/2.0 400 Bad Request response.
>>
>> My phones are able to register but when I try a test call (e.g. to 9196)
>> FS responds to the INVITE with Bad Request. For a short transcript of
>> this in action see: http://pastebin.freeswitch.org/17863
>>
>> My setup:
>> I have a clean git head install (cloned yesterday) and am running the
>> unmodified "out of the box" configuration (except I have enabled
>> NDLB-force-rport on the internal profile and set a default poassword).
>> FS is on a public server (no nat) and phones (aastra 57i models) are all
>> natted behind an ADSL router.
>>
>> Thanks&  Regards,
>> Charlie
>>
>>
>>
>>
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