Wireshark-bugs: [Wireshark-bugs] [Bug 2826] New: TCP SEQ/ACK Analysis Bug
Date: Fri, 22 Aug 2008 05:22:50 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2826

           Summary: TCP SEQ/ACK Analysis Bug
           Product: Wireshark
           Version: 1.0.2
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: wirehanger@xxxxxxxxxxx


Created an attachment (id=2178)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=2178)
trace for seq/ack analysis problem

Build Information:
Version 1.0.2 (SVN Rev 25698)

Copyright 1998-2008 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+ 2.12.8, with GLib 2.14.6, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with ADNS, with Lua 5.1, with GnuTLS 2.3.8, with Gcrypt 1.4.1, with MIT
Kerberos, with PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, without WinPcap, without
AirPcap.

Built using Microsoft Visual C++ 6.0 build 8804

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

Check the man page and http://www.wireshark.org for more information.
--
Wireshark is reporting the RTT to ACK segments incorrectly.

In the attached trace it reports a RTT of 2.6 seconds but this segment was
already ACK'd in packet 460.  It is not paying attention to the previous ACK of
the segement.


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