Wireshark display protocol merely UDP instead of RTPS, not decoded

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Fri, 11/18/2016 - 09:42
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cburian
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Wireshark display protocol merely UDP instead of RTPS, not decoded

Hi,


I've got the newest development version of Wireshark which has RTPS in its filter list.  And RTPS is protocol is shown in associated ICMP messages, but not for the UDP messages.  The DDS packets are simply fragmented UDP not having source and destination ports (the wire protocol?).  In one of the menus for the dissector, it asks the TCP port, but we are using UDP. 

Also, the UDP fragments are out of sequence.  Is that normal/expected?

What am I doing wrong that Wireshark can't tell the packets are RTPS, defragment them and colorize/display?


Thanks,

Chris

 

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Thu, 12/22/2016 - 04:55
Juanjo Martin
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Hi Chris,

Can you attach the Wireshark capture to this post?

Thanks,

Juanjo

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Thu, 12/22/2016 - 14:36
robuser
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Need screenshot of the protocol hierarchy. Fragmented packages are not associated to RTPS. Use async data writers and use a UDPv4 message size smaller than your MTU to work around it.

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