https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2985
Summary: Reassembling of segmented TPKT/COTP packets
Product: Wireshark
Version: SVN
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: MartinL@xxxxxxxxxxx
Created an attachment (id=2381)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=2381)
packet_segmentation.pcap
Build Information:
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I worry that no one ever complaint about this. The MMS Protocol uses TPKT/COTP
as one of its underlying layers. On large messages COTP makes sure the packets
are split into the via handshake arranged size. But on TCP/IP some packages
could be joined by the Nagle algorithm. These packages are correctly displayed
as TPKT continuation data packages. If then the last COTP segment is
transmitted, the complete message could not be rebuild and the reassembled data
is shown crumbled. In the attached sample this happens over the frames 12-20.
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