RE: [Partysip-dev] Duplicate INVITE and BYE

[Aymeric Moizard]

The two INVITE are sent by partysip because the UA has not
sent a response for 0.5s which is the timer in osip and SIP to
send a retransmission.

In osip, this is implemented so that the initial retransmissions is done
at least after 1s! (here the second invite is sent after 1.49s)

Aymeric

On Tue, 24 Dec 2002, Pang, Thomas wrote:

> Hi Aymeric,
>
> I have checked the traffic trace captured by Ethereal.
> It indicates duplicate INVITE and ACK were sent.  I have checked
> the timestamp between two consecutive INVITEs (or BYEs), they are
> less than 3 seconds apart.  I have checked psp_core.c and the
> retransmission timeout is set to 5 seconds when calling pspm_tlp_execute.
> It is set to 5 seconds because it is the default value suggested by
> rfc2543.
>
> Please look at the INVITEs and BYEs folked by partysip server
> (10.241.244.40).  The ip addresses of two user agents are 10.241.244.202
> and 10.241.244.58.
>
> I will send you the traffic trace in a separate email.
>
> Cheers,
>
> Thomas
>
>
>
> -----Original Message-----
> From: Aymeric Moizard [mailto:address@hidden
> Sent: Monday, December 23, 2002 12:51 AM
> To: Pang, Thomas
> Cc: 'address@hidden'
> Subject: Re: [Partysip-dev] Duplicate INVITE and BYE
>
>
>
> Possibly, the 2 INVITEs and 2 BYEs may just be 2 retransmissions.
> This is because UDP is unreliable.
>
> If you still think there is a bug, send me your call-flow.
> Thanks
> Aymeric
>
> On Sun, 22 Dec 2002, Pang, Thomas wrote:
>
> > Hi all,
> >
> > I am using partysip-0.5.0 with linphone-0.9.1.  Monitoring SIP messages
> > using Ethereal,
> > I realize that partysip folks INVITE and BYE twice.  Please see the
> > following traffic trace:
> >
> > UA 1          Proxy           UA 2
> >
> > INVITE ----->
> >        <----- Trying
> >               Invite  ------>
> >               Invite  ------>
> >                       <------ Trying
> >                       <------ Ringing
> >        <----- Ringing
> >                       <------ OK
> >        <----- OK
> > ACK    ------>
> >
> >        <----- RTP ------>
> >
> > BYE    ----->
> >               BYE     ------>
> >               BYE     ------>
> >                       <------ OK
> >        <----- OK
> >
> >
> > Is it a bug or is there a reason of duplicating INVITE and BYE messages?
> > Thanks.
> >
> > - Thomas
> >
> >
> >
> > _______________________________________________
> > Partysip-dev mailing list
> > address@hidden
> > http://mail.nongnu.org/mailman/listinfo/partysip-dev
> >
>
>
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