Wireshark-bugs: [Wireshark-bugs] [Bug 4022] New: tshark fails to display MEGACO protocol.
Date: Thu, 17 Sep 2009 07:54:57 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4022

           Summary: tshark fails to display MEGACO protocol.
           Product: Wireshark
           Version: 0.99.4
          Platform: Other
        OS/Version: Ubuntu
            Status: NEW
          Severity: Blocker
          Priority: Medium
         Component: TShark
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected]


Build Information:
tshark -v
TShark 0.99.4

Copyright 1998-2006 Gerald Combs <[email protected]> and contributors.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GLib 2.12.11, withlibpcap 0.9.5, with libz 1.2.3, with libpcre
6.7, without UCD-SNMP, with ADNS, without Lua, with GnuTLS 1.4.4, with Gcript
1.2.3, without Kerberos.

Running on Linux 2.6.20-15-sparc64-smp, with libpcap version 0.9.5.

Built using gcc 4.1.2 (Ubuntu 4.1.2-0ubuntu4).

--
This may not be related to this post.  However, I'm using tshark version 0.99.4
on a Linux machine.

I'm trying to filter out the MEGACO protocols from my traces using TShark.  I'm
successfully able to decode the MEGACO trace, however, when I try to utilize
the display filter, there is nothing in the output file.

Here are the commands I used:

tshark -r OriginalTrace -d udp.port==2944,megaco -F libpcap -R "megaco" -w
megacoOnlyTrace

This produces a blank file.  What am I doing wrong?

If I use the command:

tshark -r OriginalTrace -d udp.port==2944,megaco -F libpcap -w megacoOnlyTrace
tshark -r megacoOnlyTrace -R "megaco" -F libpcap -w megaco2.pcap

megacoOnlyTrace now contains the original trace + udp port 2944 decoded as
MEGACO.  However, the megaco2.pcap file is blank.

All of this works just fine on my PC (even on the 0.99.4 version), it is only
the LINUX version which has problems.

Thank you,
Kalpesh


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