HTTP 1.1 compliance
I am writting a HTTP server and want to be sure that it supports all mandatory features of HTTP 1.1.

Unfortunatelly I cannot find a list of mandatory and optional features of HTTP 1.1
So it would be hard work to go through the RFC.

Does someone can point me to such a feature list?
I am also interested in tools which test HTTP 1.1 compliance of a HTTP server.
HTTP 1.1 compliance
===

I am writting a HTTP server and want to be sure that it supports all mandatory features of HTTP 1.1.

Unfortunatelly I cannot find a list of mandatory and optional features of HTTP 1.1
So it would be hard work to go through the RFC.

Does someone can point me to such a feature list?
I am also interested in tools which test HTTP 1.1 compliance of a HTTP server.