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When serving CGI binary this version of the handler is CGI/1.1 compatible.
It accepts CGI headers from the binary and produces a set of required HTTP headers
followed by gzipped content.

=head2 POST Request Features

I have to serve the POST requests for CGI binary with special care,
because in this case the handler
is standing along and have to serve all data flow in both directions
at the time when C<stdin> is tied into
Apache, and could not be exposed to CGI binary transparently.

To solve the problem I alter POST with GET request internally
doing the required incoming data transformations on the fly.

This could cause a problem, when you have a huge incoming stream from your client (more than 4K bytes).
Another problem could appear if your CGI binary is capable to distinguish POST and GET requests internally.

=head2 Control over the Client Cache

The control over the lifetime of the response in client's cache is provided