I'm looking for an easy way to re(p)lay HTTP requests, sent to one (live) server, immediately (or later) to another (test) server, for both GET and POST requests. With as little interference as possible on the original (live) server.
The way I figure it, this would ideally be a module that would install itself as an Apache PerlHandler in a mod_perl environment. This module would take the request object and write out the input headers, method, URL etc. to a log file or syslog daemon in some format.
Another (part of the) module would be capable of reading the log file and sending an identical request to a (test) server of choice. This could be either a direct relay (when reading the log file with a tail -f) or a delayed replay (whenever you want to process the log file).
I've looked at HTTP::Recorder and WWW::Mechanize, but they seem to be overkill (and I don't want to add the extra complexity of a proxy server).
Is there such a beast already? If not, would it make sense to make such a beast?