http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1417
Summary: Inaccurate RTCP Parsing
Product: Wireshark
Version: unspecified
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: Medium
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: brettcclark@xxxxxxxxxxx
Build Information:
wireshark 0.99.3 (SVN Rev 19011)
Copyright 1998-2006 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+ 2.6.9, with GLib 2.6.6, with WinPcap (version unknown),
with libz 1.2.3, with libpcre 6.4, with Net-SNMP 5.3.1, with ADNS, with Lua
5.1.
Running with WinPcap version 3.1 (packet.dll version 3, 1, 0, 27), based on
libp
cap version 0.9[.x] on Windows XP Service Pack 2, build 2600.
--
When parsing RTCP packets, the RFC 3550 states that the 'Length' field in the
RTCP common header, should be the size of data which follows the header. The
length field in the packet denotes size of this data in WORDs (the RFC seems to
define WORD = 4 bytes). You have just copied this size directly into your
Packet Details window instead of turning it into bytes. Thus, you need to
multiply the Length field by 4 to get an accurate byte count.
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