[OpenSIPS-Users] SST module: Min-SE optional in request

Bogdan-Andrei Iancu bogdan at voice-system.ro
Wed Oct 8 15:02:25 CEST 2008

Hi Sebastian,

Schumann Sebastian wrote:
> Dear all
> I might have noticed a bug in SST module:
> If I send an INVITE with
> Session-Expires: 300
> Supported: timer
> I get rejected with 422 Session-Timer too small.
> If a Min-SE: x header with x > set min_se parameter included I do not 
> get the message.
> This is IMHO wrong behavior, as Min-SE is optional in initial 
> INVITE-requests sent by the phone acc. RFC 4028, table 1.
AFAIK, the "422 Session-Timer too small" is a response related to 
"Session-Expires" value - the other party considers the value to high 
and in the reject adds the Min-SE with the minimum accepted 
> Another thing that I noticed is the response to this message includes 
> the Min-SE header (as it should), but has no linebreak after it (at 
> least in kamailio branch 1.4). The message looks like
> MIN-SE:120Server: Kamailio (1.4.1-notls (i386/linux))
This should be fixed in OpenSIPS 1.4 and devel.


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