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Wireshark-bugs: [Wireshark-bugs] [Bug 12800] New: TCP Dissector - marks SYN retransmissions inco

Date: Wed, 31 Aug 2016 18:18:18 +0000
Bug ID 12800
Summary TCP Dissector - marks SYN retransmissions incorrectly as spurious
Product Wireshark
Version 2.0.5
Hardware x86
OS Windows 7
Status UNCONFIRMED
Severity Minor
Priority Low
Component Dissection engine (libwireshark)
Assignee [email protected]
Reporter [email protected]

Created attachment 14866 [details]
capture showing incorrectly tagged retransmissions

Build Information:
Version 2.0.5 (v2.0.5-0-ga3be9c6 from master-2.0)

Copyright 1998-2016 Gerald Combs <[email protected]> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 Qt 5.3.2, with WinPcap (4_1_3), with libz 1.2.8, with
GLib 2.42.0, with SMI 0.4.8, with c-ares 1.11.0, with Lua 5.2, with GnuTLS
3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with QtMultimedia,
with AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with locale
English_United States.1252, with WinPcap version 4.1.3 (packet.dll version
4.1.0.2980), based on libpcap version 1.0 branch 1_0_rel0b (20091008), with
GnuTLS 3.2.15, with Gcrypt 1.6.2, without AirPcap.
Intel(R) Core(TM) i3 CPU         550  @ 3.20GHz (with SSE4.2), with 8119MB of
physical memory.


Built using Microsoft Visual C++ 12.0 build 40629

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

Check the man page and http://www.wireshark.org for more information.
--
A device attempts to connect to an unused port. There is no response to the SYN
packet. After a timeout the SYN is retransmitted. It is in fact a
"retransmission". However, there is no prior connection for this socket or SYN
ACK. So this should not be a "spurious retransmission".


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