HTTP Pocket Reference

Summary of Support Across HTTP Versions

The following is a listing of all HTTP headers supported by each version of HTTP so far.

HTTP 0.9

Method	General	Request	Entity	Response
GET	None	None	None	None

HTTP 1.0

Method	General	Request	Entity	Response
GET	Connection	Accept	Allow	Location
HEAD	Date	Accept-charset	Content-encoding	Retry-after
POST	MIME-version	Accept-encoding	Content-language	Server
PUT	Pragma	Accept-language	Content-length	WWW-Authenticate
DELETE		Authorization	Content-type
LINK		From	Expires
UNLINK		If-modified-since	Last-modified
		Referer	Link
		User-agent	Title
			URL

HTTP 1.1

Method	General	Request	Entity	Response
OPTIONS	Cache-control	Accept	Allow	Accept-Ranges
GET	Connection	Accept-charset	Content-encoding	Age
HEAD	Date	Accept-encoding	Content-language	Etag
POST	Pragma	Accept-language	Content-length	Location
PUT	Trailer	Authorization	Content-location	Proxy-authenticate
DELETE	Transfer-encoding	Expect	Content-md5	Retry-after
TRACE	Upgrade	From	Content-range	Server
CONNECT	Via	Host	Content-type	Vary
	Warning	If-modified-since	Expires	WWW-Authenticate
		If-match	Last-modified
		If-none-match
		If-range
		If-unmodified-since
		Max-forwards
		Proxy-authorization
		Range
		Referer TE
		User-agent