In progress. Once finished, external links and copy-editing needed. Must tweet about it. Needed in order to document adequately the Websocket handshake protocol
Explains the usage of the q values in some headers
Not started. Needed to keep others pages simple. The q values are not much complex, but often poorly understood, even by browser manufacture.
Regroups everything about caching in HTTP
Not started. The goal is to replace the HTTP Caching FAQ which is 1) very incomplete 2) non-encyclopedic format 3) Unclear licensing.
Regroups everything about proxies in HTTP
Speaks about the If-* HTTP headers
Not started. Already spoken in the HTTP page, but I think it need some more details and examples, its own article.
Not started. This is a very important article as extension are *not* the way to know the type of a resource on the internet. Though it can be moved to MIME types instead of HTTP/MIME types as it is also important to the mail message format (RFC822 and so).
Explains the Link: HTTP headers
Not started. The Link: header got a revival. A new RFC went out in 2010 and it is currently being extended for Firefox 7 (or Fx 8). We need to completely rewrite its documentation as the "Link Prefetching FAQ" is too specific (rel=prefetch is not the only usage), in the FAQ format rather than an encyclopedic one, is fuzzy about its license. And we have a good page for the HTML <link> element, so they must work togethe.
What is pipelining and how it works
Not started. Must supersede the outdated HTTP Pipelining FAQ. There is a lot of work in progress in order to activate pipelining by default in Fx 8.