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Is there a way to show non truncated data with tshark without recompiling?

asked 2019-08-26 17:00:22 +0000

rspiege1 gravatar image

Has there been a feature added yet to T-Shark to allow you to see the full non-truncated payload of a message? In my case I am working with webscocket data that is compressed using permessage-deflate. I can decompress it, but it truncates the payload.

I'm aware that I can recompile tshark and modify the ITEM_LABEL_LENGTH in epan/proto.h, but I wanted to see if there was any other way this could be accomplished without recompiling tshark.

This is an example of the Tshark command I am running: tshark -r ~/Downloads/small.pcap -Y websocket.payload -Tfields -e frame.number -e frame.time -e text


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Have you solved this issue?

doogers gravatar imagedoogers ( 2022-10-14 10:14:44 +0000 )edit

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answered 2019-08-26 17:31:23 +0000

grahamb gravatar image

updated 2023-06-15 08:08:41 +0000

Guy Harris gravatar image

Enhancement request 14874 is looking for something user adjustable for use with the GUI, but if implemented would probably work in the CLI as well.

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That request is talking about the items in the packet detail pane. It's not clear that, say, a line in a protocol tree view that's 100000 characters wide would be all that useful - that's a lot of scrolling* - but for somebody dumping that information out in a form possibly intended for machine consumption, such as -T fields output, perhaps there should be no limit.

That might require that the -T fields output be produced by different code from the protocol tree display code, but that's not necessarily a bad thing - what's useful for human consumption isn't necessarily what's useful for machine consumption.

Guy Harris gravatar imageGuy Harris ( 2019-08-26 19:06:11 +0000 )edit

answered 2021-11-30 22:16:15 +0000

fred82 gravatar image

I've developed my own tool to extract WebSocket frames from a pcap file, it works quite better than Wireshark. It's at

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Asked: 2019-08-26 17:00:22 +0000

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Last updated: Jun 15 '23