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tshark get only application level data bytes

asked 2019-09-26 22:05:04 +0000

rogerz343 gravatar image

I'm using tshark to get a .csv of various fields, and I want the application level data (above tcp/udp) as one of the fields. For some of the frames I can get this from "data.data" but not for the frames whose application level protocol has already been dissected.

Is there a way to get just the (app-level) data above tcp/udp layer (in either raw bytes or hex string) for all of the frames? I don't want to use "-x" or something like that to get all of the bytes since then I have to first remove the lower-level layers.

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answered 2019-09-27 07:50:08 +0000

SYN-bit gravatar image

For TCP, there is the field tcp.payload which is the TCP segment (payload) of the packet, regardless of the upper layer protocol.

For UDP there is not yet(?) such a field. If you would like such a field to be added, you might want to add a feature request on https://bugs.wireshark.org

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answered 2019-09-27 00:06:06 +0000

Chuckc gravatar image

updated 2019-09-27 04:09:50 +0000

Brute force might be to have a profile with all protocols disabled except ethernet, ipv4, ipv6?, tcp and udp. Use "-C" to specify the profile to load and print the data.data field.

tshark -r .\http-riverbed-one.pcapng -C data_data -e "data.data" -Tfields -Y data.data > tmp.fil
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Asked: 2019-09-26 22:05:04 +0000

Seen: 318 times

Last updated: Sep 27 '19