As far as I can tell, the compression is separate for the headers, does not use deflate, and (most importantly) is over the entire session, not just one request

As far as I can tell, the compression is separate for the headers, does not use deflate, and (most importantly) is over the entire session, not just one request. This would benefit from the fact that in one request headers are not repeated, but over multiple requests they certainly are. http://www.greenbytes.de/tech/webdav/draft-ietf-httpbis-header-compression-01.html http://www.greenbytes.de/tech/webdav/draft-ietf-httpbis-head...