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Wireshark-bugs: [Wireshark-bugs] [Bug 7522] New: Wrong results in Statistics->Conversations

Date: Tue, 24 Jul 2012 05:19:54 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7522

           Summary: Wrong results in Statistics->Conversations
           Product: Wireshark
           Version: 1.8.1
          Platform: x86
        OS/Version: Windows 7
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: msbreuer@xxxxxxxxx


Build Information:
Version 1.8.1 (SVN Rev 43946 from /trunk-1.8)

Copyright 1998-2012 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 (64-bit) with GTK+ 2.24.10, with Cairo 1.10.2, with Pango 1.30.0, with
GLib 2.32.2, with WinPcap (4_1_2), with libz 1.2.5, without POSIX capabilities,
with SMI 0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS
2.12.18, with Gcrypt 1.4.6, without Kerberos, with GeoIP, with PortAudio
V19-devel (built Jul 23 2012), with AirPcap.

Running on 64-bit Windows 7, build 7600, with WinPcap version 4.1.2 (packet.dll
version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b (20091008),
GnuTLS 2.12.18, Gcrypt 1.4.6, without AirPcap.

Built using Microsoft Visual C++ 10.0 build 40219

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

Check the man page and http://www.wireshark.org for more information.
--
After updating from wireshark 1.6 to 1.8.1 the feature in menu
statistics->conversations does not summarize correctly.

I am analyzing a dump with plenty tcp connections problems - 3 times SYN
without ACK - and got different result in wireshark 1.8.1.

My display filter is: tcp.flags.syn eq 1

Calling statistics->conversations
-> select "limit to display filter"
-> select tcp tab

In 1.8.1 the column "Packets" and "Packets a->b" seems to use wrong sums, the
latest wireshark revision always shows a count of 3. The older release showed
greater values. By evaluation the display filter directly you see, the older
revision is right.

Probably 1.8.1 calculates on a per tcp-session base. But that is wrong, the
table shows ip and ports, so all traffic (matching the filter) should be
considered.

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