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How can I filter packet bytes to display only certain messages...

asked 2018-12-13 16:14:32 +0000

DaveP gravatar image

updated 2018-12-13 17:59:19 +0000

I am trying to find a hex sequence within the packet bytes display using the "Find Packet" function. It works but shows all packets containing the hex sequence. Within a packet, I want it to only display the messages which contain the hex sequence and hide all messages which dont. Can I do this?

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You'll need to be a bit more explicit about what you mean by "messages", it's possible that there's a better display filter you can use.

Apart from that "Find Packet" is doing what you asked, it finds a packet containing the hex sequence.

grahamb gravatar imagegrahamb ( 2018-12-13 16:42:19 +0000 )edit

By a single message, I mean one line in the "Packet Bytes window" . My window has 419 lines

DaveP gravatar imageDaveP ( 2018-12-13 18:00:24 +0000 )edit

The "Find Packet" filter can't do that, as you haven't told it which element in the packet you wish to search in, which would cause the bytes for that element to be highlighted.

Again, what protocol are you using for and what elements in that protocol are you searching for?

grahamb gravatar imagegrahamb ( 2018-12-13 18:06:47 +0000 )edit

This is UDP data. The data messages are CAN data, but I only want to search and display based on certain addresses(x08x0b)

DaveP gravatar imageDaveP ( 2018-12-13 18:13:24 +0000 )edit

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answered 2018-12-14 06:43:33 +0000

Jaap gravatar image

The filter system is designed to allow for selection of packets to be either shown or not. If a packet is selected to be shown its shown in its entirety. The filter system does not support defining a limited view of the packet contents and only show that view.

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Thank you for the answer!

DaveP gravatar imageDaveP ( 2018-12-18 14:01:55 +0000 )edit

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Asked: 2018-12-13 16:14:32 +0000

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Last updated: Dec 14 '18