HTTP::Request? Possibly even HTTP::Request::FromTemplate, although I've never tested it with POST data. Possibly you can also trick WWW::Mechanize into allowing you to set the Content-Type of the file. WWW::Mechanize not setting the Content-Type might or might not be construed as a bug.

In reply to Re^5: Automation and Java Applet by Corion
in thread Automation and Java Applet by Tomcat7194

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