I thought I remembered it supporting POST, but I'm not psitive. What I've done with it is turn an apache log into a httperf session and play it back. If you really need it to be live, I would look at LWP instead. There are a couple of modules for proxying requests with LWP, which you can find on CPAN, but you'd have to do a bit of work to make them actually run the request locally as well as proxy it. Ideally, I would put the proxy stuff in a cleanup handler.
in reply to Re^2: Live re(p)laying of HTTP requests
in thread Live re(p)laying of HTTP requests