[OpenSER-Users] best response seems wrong.

[Aymeric Moizard]

On Wed, 16 Jan 2008, Bogdan-Andrei Iancu wrote:

> Hi Aymeric,
>
> could you describe the message flow (requests and replies)? I understand 
> you do parallel forking to 2 clients that return 5xx replies, but where 
> the 407 comes from??

I was about to send the capture:

http://antisip.antisip.com/publish-issue.pcap

Put the filter "sip contains 77622" to view the incoming
transaction + the 2 outgoing transactions. 2 501 are received
and one 407 is sent back. There is no incoming 407 that comes
to openser.

I have to admit that the call flow is strange, because my openser forwards 
the PUBLISH sent by a user to himself. (I don't have presence server) The 
second strange thing is that the same softphone is registred twice on the 
same IP... However, this demonstrates the issue.

In case, there is only ONE binding for the user, the 501 is forwarded 
correctly...

To reproduce the error:
My softphone:
http://sip.antisip.com/download/emansip-setup/emansip-setup-v411-rc10.exe
Create an account first on:
http://sip.antisip.com/

I'm currently modifying my softphone to send 405, hoping that will fix
the issue... However, it would still be nice to solve it.

tks for your effort,
Aymeric

> regards,
> bogdan
>
> Iñaki Baz Castillo wrote:
>> On Wednesday 16 January 2008 14:58:22 Aymeric Moizard wrote:
>> 
>>> (sorry: just repost to follow correct thread/subjet)
>>> 
>>> I just found another  example from rfc3261 where an endpoint will use 5xx
>>> class answer:
>>> 
>>> 12.2.2 UAS Behavior
>>> 
>>> Page 76:
>>>
>>>     If the remote sequence number is empty, it MUST be set to the value
>>>     of the sequence number in the CSeq header field value in the request.
>>>     If the remote sequence number was not empty, but the sequence number
>>>     of the request is lower than the remote sequence number, the request
>>>     is out of order and MUST be rejected with a 500 (Server Internal
>>>     Error) response.
>>> 
>>> Hope I convinced you!
>>> 
>> 
>> Yes ;)
>> 
>> 
>> So the question here is why OpenSer is replying 407. But it's so strange...
>>
>> 
>
>