how to log apache POST contents?

[abc_18]

On p38 of the O'Reilly "Apache Cookbook" (2003), it says it will soon be possible to log the contents of data submitted with a POST (as opposed to a GET) HTTP request, using an Apache 2.0 filter. However no one (as of 2003) had yet written such a filter :-(

Does anyone here have such a filter, or an alternate method for logging the POST contents? (This is with apache 2.x, on HP-UX 11.23).

Thanks in advance.