Wireshark · Wireshark-dev: [Wireshark-dev] Dissect multiple PDUs in one TCP Segment

[Robert Naumann <robert.naumann@xxxxxxxxxxxxxxxxxxxx>]

Hello,

i'm new to the dissector developement for wireshark. I've read that it 
should be actually possible to dissect multiple PDUs from one TCP 
Segment with tcp_dissect_pdus(), but i don't get it working.

For example: i've got 2 different PDUs with different lengths (5 and 6). 
I already got the pdu lengths. The Length of the TCP Datasegment is 11.

So for the first PDU the function:

tcp_dissect_pdus(tvb, pinfo, tree, TRUE, min_pdu_size, 
*first_pdu_size*, dissect_pdu_sc);

so the first PDU with the correct size (proved) should be passed to the 
dissector function dissect_pdu_sc.

My first problem:   
=============
At the dissection of my top level protocol the PDU is marked as 
[Malformed Packet], why? Size is correct! bitstream show the complete 
data of my PDU

My second problem:     
===============
The second PDU within the the TCP Segment wont be dissected and not 
shown as a part of my top level protocol. Is the second PDU 
automatically processed or do i have to call the function 
tcp_dissect_pdus() again?

Any suggestion would be nice,

Thanks, Robert