Wireshark display protocol merely UDP instead of RTPS, not decoded

3 posts / 0 new
Last post
Offline
Last seen: 2 years 10 months ago
Joined: 11/18/2016
Posts: 2
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

 

Juanjo Martin's picture
Offline
Last seen: 2 weeks 18 hours ago
Joined: 07/23/2012
Posts: 48

Hi Chris,

Can you attach the Wireshark capture to this post?

Thanks,

Juanjo

Offline
Last seen: 1 year 10 months ago
Joined: 09/17/2015
Posts: 53

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.