[Kamailio-Users] SDP ending with CRLF and a=nortpproxy:yes

[Daniel-Constantin Mierla]

On 09/11/08 16:10, Klaus Darilion wrote:
> A similar bug was also described in opensips. They tried to fix it but 
> the bug is still present. I wonder if this is something new or if the 
> bug is thre since the beginning of nathelper but did not occured until now
>   
maybe this can be fixed by using the sdp parser available now in core. 
nathelper has quite limited sdp parsing capabilities now. the issue is 
to find the proper hook to add the lump with

a=nortpproxy:yes\r\n"

Cheers,
Daniel


> klaus
>
> Aymeric Moizard schrieb:
>   
>> Hi,
>>
>> I just happen to find an issue with a software
>> trying to call through my openser-1.3.1
>>
>> After inserting "a=nortpproxy:yes\r\n", the
>> message coming out openser is:
>>
>> [normal sdp packet]
>> a=fmtp:101 0-15\r\n
>> \r\n
>> \r\n
>> "a=nortpproxy:yes\r\n"
>>
>> No matter who is responsible in that specific case (the SDP received 
>> by openser with several \r\n looks not compliant to me).
>>
>> I think openser should add "a=nortpproxy:yes" in different place
>> in the SDP packet: NOT at the end of the SDP body. The "a=nortpproxy:yes"
>> should be either put at the global attribute level or right below a m= 
>> line.
>>
>> This approach would solve such issue and would be much more
>> adequate to the requirement: currently it's not very possible
>> to relay an audio stream and not relay a video stream with the
>> current approach.
>>
>> tks,
>> Aymeric MOIZARD / ANTISIP
>> amsip - http://www.antisip.com
>> osip2 - http://www.osip.org
>> eXosip2 - http://savannah.nongnu.org/projects/exosip/
>>
>>
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>
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>   

-- 
Daniel-Constantin Mierla
http://www.asipto.com