The HTTP protocol handler is a significant source of bug reports and escalation. By its nature it is often difficult to diagnose the issue, involving network captures, server logs etc..
It would help a lot if there was more code instrumentation in the protocol handler. At the very least an easy way to log the HTTP traffic including headers and such.
There isn't steps to reproduce or a test case (noreg-hard key is present) and the issue was filed about improvement of HTTP protocol logging, so close as not verified.