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by lionet 3751 days ago
-m 'foo' -m 'bar' is one way. --message-file <filename1> --message-file <filename2> is another way.

You can randomize input somewhat by using \{connection.id % 100} expressions right in the -m and within the files.

But yes, tcpkali can do simple randomizations, but does not support full-blown scripting. For that, consider using http://github.com/machinezone/mzbench or other alternatives.