[OpenSER-Users] OpenSER Sending INVITE twice

Ovidiu Sas osas at voipembedded.com
Tue Dec 4 19:46:58 CET 2007


There is no per upstream server config.
Best thing to do is upgrade to openser 1.2.  Starting with this
release the timer granularity has been increased.
If you have a high RTT, you can increase the T1 timer:
http://www.openser.org/docs/modules/1.2.x/tm#AEN168


Hope this helps,
Ovidiu Sas

On Dec 4, 2007 12:44 PM, Douglas Garstang <dougmig33 at yahoo.com> wrote:
>
> Oh, and RTT as OpenSER determines it to where? Is it one RTT for all
> outgoing traffic or is it a different RTT for every upstream server?
>
>
>
> ----- Original Message ----
> From: Ovidiu Sas <osas at voipembedded.com>
> To: Douglas Garstang <dougmig33 at yahoo.com>
> Cc: Users at lists.openser.org
> Sent: Monday, November 26, 2007 5:47:23 PM
> Subject: Re: [OpenSER-Users] OpenSER Sending INVITE twice
>
>  This is the way that is supposed to work.  If nothing is received from
> upstream, the request is resent.
> From the rfc3261:
>
> 17.1.1.1 Overview of INVITE Transaction
>
>   The INVITE transaction consists of a three-way handshake.  The client
>   transaction sends an INVITE, the server transaction sends responses,
>   and the client transaction sends an ACK.  For unreliable transports
>   (such as UDP), the client transaction retransmits requests at an
>   interval that starts at T1 seconds and doubles after every
>   retransmission.  T1 is an estimate of the round-trip time (RTT), and
>   it defaults to 500 ms.
>
>
> Regards,
> Ovidiu Sas
>
> On Nov 26, 2007 3:29 PM, Douglas Garstang <dougmig33 at yahoo.com> wrote:
> >
> > I have an OpenSER 1.1 install here, and for some reason, OpenSER is
> sending
> > the INVITE message twice to the upstream host.
> >
> > The time difference between them is about 1/5 of a second. Nothing is
> > received between the first and second INVITE's.
> >
> > Why is OpenSER doing this?
> >
> > I have xlog() statements everywhere in openser.cfg, and OpenSER is only
> > logging ONE outgoing INVITE message, eventhough it's sending two. It is
> > logging the multiple TRYING messages that come back however.
> >
> > OpenSER is not calling failure_route because nothing is logged in there.
> > What could be going wrong? Why is it doing this?
> >
> > Doug.
> >
> >
> >
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