Re: [OpenSIPStack] OpenSBC terminate connection
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Re: [OpenSIPStack] OpenSBC terminate connection
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From: OpenSIPStack F. <ope...@op...> - 2008-11-17 11:52:20
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I have the exact same problem with the latest CVS version 1.1.5-36.
The softswitch replies to the BYE with a "400 Bad Request".
I'll provide level 5 log and wireshark capture.
Regards.
Antonio.
> {quote:title=Guest wrote:}{quote}Andre,
>
> If it's not much trouble. Please provide level 5 log and wireshark
> capture from the sbc box.
>
> Joegen
>
> André Mamitzsch wrote:
> > Hello Joegen,
> >
> > I have tested against the latest CVS version, 1.1.5-27, still no
> > success. The softswitch still responds with a "400 Bad Request".
> >
> > Regards,
> >
> > Andre
> >
> > jo...@op... schrieb:
> >
> > > Andre,
> > >
> > > This is a known problem area in OpenSBC. Since we are a B2BUA and not a
> > > proxy we terminate our dialogs based on successful processing of a BYE
> > > request. OpenSBC does not wait for a final response before it destroys
> > > connections. This ensures that the SBC does not end up with ghost
> > > sessions as well if a certain UA is not able to handle authenticated BYE
> > > requests. This is the second time I have received this report regarding
> > > this problem. Can you provide me a with a level 5 log for this
> > > problematic call offlist? I'll see if an easy workaround is possible.
> > > If you could, please also attach a wire shark capture of the successful
> > > call you made using a UA directly calling your softswitch. My e-mail
> > > address is jo...@op...
> > >
> > > Joegen
> > >
> > > André Mamitzsch wrote:
> > >
> > > > Hello,
> > > >
> > > > I have seen a strange behavior with the OpenSBC1.1.5RC1. The scenario is
> > > > as follows:
> > > >
> > > > The OpenSBC is configured in B2BUAUpperReg mode.
> > > >
> > > > I place a call from a SIP client (A) to a PSTN Phone (B). The connection
> > > > is established whithout any problems. A goes on hook and sends a BYE to
> > > > which the SBC immediately replies with a 200 OK.
> > > >
> > > > Another BYE message is being sent out to the softswitch platform.
> > > >
> > > > The softswitch challenges authentication and therefore responds with a
> > > > 401 unauthorized message. Since the SBC, at least that's my assumption,
> > > > has already successfully terminated the internal connection there is no
> > > > match and the requested authenticated BYE will never be send out. This
> > > > behavior results in ghost connections and the billing runs until B goes
> > > > on-hook as well.
> > > >
> > > > I have tested the same scenario with my SIP client directly connected to
> > > > our softswitch platform and did not detect the problem there. Upon
> > > > receiving the 401 unauthorized message, the client resends the BYE
> > > > containing the authentication information.
> > > >
> > > > I have checked the RFC 3261 this morning and tried to find out whether
> > > > it is a regular behavior to reply to a BYE message with authentication
> > > > challenge or not. I could not find any hint there.
> > > >
> > > > How difficult is it to change this behavior and wait for confirmation
> > > > before terminating the entire connection ?
> > > >
> > > > Regards,
> > > >
> > > > Andre
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