Wireshark · Ethereal-dev: Re: [Ethereal-dev] [Fwd: Patch for VoIP]

[Olivier GRALL <olivier.grall@xxxxxxxxxx>]

I don't use "ras in q931 facility", I use a TCP connection as a tunnel 
and I use it to send or receive H323 messages.

I need to verify the messages because there are address and port 
translations in the H323 messages. The first step is to add the 2 
patches I sent (only 1 line to add in 2 files). Then I will be able to 
make my own dissector for this TCP Connection. This dissector will call 
the RAS dissector or the Q931 dissector when an H323 messages is sent.

For the moment I can only share a file from server side where you can 
see the TCP connection and a RRQ/RCF dial for example.

Olivier.


LEGO a écrit :

> do you have any capture of those "ras in q931 facility" packets you can share? 
>
> Luis
>
> On Mon, 21 Feb 2005 14:16:50 +0100, Olivier GRALL
> <olivier.grall@xxxxxxxxxx> wrote:
>  
>
> > Hello,
> >
> > I come back to explain a bit more my needs. I use only ONE tcp connexion
> > to transport all H323 messages (RAS, Q931, H245). I want to see if my
> > H323 messages are OK. But with ethereal, the overhead of the packets and
> > the only one TCP connection don't permit to call the right dissectors.
> >
> > My 2 patches permit to call the RAS dissector and the Q931 dissector in
> > a good way from everywhere. It may be usefull for other cases.
> >
> > Thanks,
> >
> > Olivier GRALL.
> >
> > -------- Message original --------
> > Sujet:  Patch for VoIP
> > Date:   Tue, 08 Feb 2005 18:33:21 +0100
> > De:     Olivier GRALL <olivier.grall@xxxxxxxxxx>
> > Pour:   ethereal-dev@xxxxxxxxxxxx
> >
> > Hello,
> >
> > I need to look at H323 communications over tunnels. So, I tried 2 minor
> > changes.
> >
> > I would like to submit these changes if it's possible in epan/dissectors.
> >
> > I need to be able to call RAS dissector for IP ports different from 1718
> > and 1719. And I also need to dissect encapsulated Q931 messages with
> > tpkt. The only way I found to do it is in the patches. I prepared the
> > patches from last SVN source code.
> >
> > Thanks a lot in advance.
> >
> > Olivier GRALL
> >
> >
> > --- packet-h225.c       2005-02-08 18:22:55.028461224 +0100
> > +++ packet-h225.c.old   2005-02-08 18:20:14.762825304 +0100
> > @@ -12237,7 +12237,6 @@
> >                &h225_reassembly);
> >
> >   new_register_dissector("h225", dissect_h225_H323UserInformation, proto_h225);
> > -  new_register_dissector("h225ras", dissect_h225_RasMessage, proto_h225);
> >   new_register_dissector("h323ui",dissect_h225_H323UserInformation, proto_h225);
> >
> >   nsp_object_dissector_table = register_dissector_table("h225.nsp.object", "H.225 NonStandardParameter (object)", FT_STRING, BASE_NONE);
> >
> >
> > --- packet-q931.c       2005-02-08 18:23:47.995409024 +0100
> > +++ packet-q931.c.old   2005-02-08 18:20:21.894741088 +0100
> > @@ -3165,7 +3165,6 @@
> >            proto_q931);
> >        register_dissector("q931.ie", dissect_q931_ie_cs0, proto_q931);
> >        register_dissector("q931.ie.cs7", dissect_q931_ie_cs7, proto_q931);
> > -       register_dissector("q931tpkt", dissect_q931_tpkt_pdu, proto_q931);
> >
> >        /* subdissector code */
> >        codeset_dissector_table = register_dissector_table("q931.codeset", "Q.931 Codeset", FT_UINT8, BASE_HEX);
> >
> >
> > _______________________________________________
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> > Ethereal-dev@xxxxxxxxxxxx
> > http://www.ethereal.com/mailman/listinfo/ethereal-dev
> >
> >
> >
> >    
>
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>

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