Wireshark-bugs: [Wireshark-bugs] [Bug 4905] New: VoIP Calls Prepare Filter unreliable

Date: Wed, 23 Jun 2010 05:22:49 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4905

           Summary: VoIP Calls Prepare Filter unreliable
           Product: Wireshark
           Version: 1.4.0
          Platform: x86
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: keithfrench@xxxxxxxxxxxxx


Build Information:
Version 1.4.0rc1 (SVN Rev 33190 from /trunk-1.4)

Copyright 1998-2010 Gerald Combs <gerald@xxxxxxxxxxxxx> 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 GTK+ 2.16.6, (32-bit) with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jun
 9 2010), with AirPcap.

Running on 32-bit Windows 7, build 7600, with WinPcap version 4.1.1 (packet.dll
version 4.1.0.1753), based on libpcap version 1.0 branch 1_0_rel0b (20091008),
GnuTLS 2.8.5, Gcrypt 1.4.5, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
When the "Prepare Filter" button is used from "VoIP Calls" normally I would
expect to see at least one RTP packet from each stream, when this filter has
been applied. However, the results seem irratic, sometimes they are there, some
times there are none and sometimes only 1 RTP packet. I have noticed this
particularly with H323 call setups.

I can supply an example trace of this if required.

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