Hi,
I think the TCP reassembly has problems with out-of-sequence messages.
Do you plan to submit your dissector to us? Which 3GPP protocol is it
for? You could submit the asn1 .cnf template files etc ( e.g the files
that go in /asn1/xx/) to be worked on in the SVN tree in that way we
could see the code and comment on it.
Regards
Anders
-----Original Message-----
From: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of Christopher
White (WTA)
Sent: den 4 juni 2009 09:29
To: wireshark-dev@xxxxxxxxxxxxx
Subject: [Wireshark-dev] TCP segmentation loss
Dear All,
I have recently been building a dissector for an 3GPP ASN.1 based
protocol which uses a tcp based transport.
I have followed the developer's guide (9.4) relating to the re-assembly
of fragments, and this seems to work fine.
However, after a tcp segment loss ( I have the preference analyse tcp
sequence no. switched on), the ASN.1 BER PDUs are no longer detected
and decoded as expected. Somehow, synchronisation is lost. I presume
this is due to the sequence of segments on the wire.
I am new to building wireshark dissectors and with the ASN.1 tools. I
presume there is some additional logic required in my dissector - would
be very grateful if someone could point me in the right direction?
Best regards,
Chris
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