This has been obsoleted by http://www.w3.org/2011/http-headers.rdfs
The Proxy-Authenticate header
Proxy-Authenticate
http://www.rfc-editor.org/rfc/rfc2227.txt
Simple Hit-Metering and Usage-Limiting for HTTP
The Pragma header
Pragma
http://www.watersprings.org/pub/id/draft-mutz-http-attributes-00.txt
User-Agent Display Attributes Headers
The UA-Pixels header
UA-Pixels
http://www.w3.org/TR/WD-proxy-960221
Notification for Proxy Caches
The Protocol-Request header
Protocol-Request
The Content-Encoding header
Content-Encoding
http://www.rfc-editor.org/rfc/rfc3253.txt
Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning)
The Proxy-Instruction header
Proxy-Instruction
The Accept-Encoding header
Accept-Encoding
The Cost header
Cost
http://www.rfc-editor.org/rfc/rfc2774.txt
An HTTP Extension Framework
The Referer header
Referer
The Lock-Token header
Lock-Token
The UA-Media header
UA-Media
http://www.rfc-editor.org/rfc/rfc3648.txt
Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol
The Cache-Control header
Cache-Control
The Authentication-Info header
Authentication-Info
The Link header
Link
The Label header
Label
http://www.w3.org/TR/REC-PICS-labels-961031
PICS 1.1 Label Distribution -- Label Syntax and Communication Protocols
The Retry-After header
Retry-After
http://www.w3.org/TR/NOTE-drp-19970825
The HTTP Distribution and Replication Protocol
http://www.w3.org/TR/NOTE-OPS-OverHTTP
Implementation of OPS Over HTTP
The Content-Version header
Content-Version
The Ordering-Type header
Ordering-Type
The Ext header
Ext
The PEP header
PEP
http://www.rfc-editor.org/rfc/rfc2617.txt
HTTP Authentication: Basic and Digest Access Authentication
The Protocol-Query header
Protocol-Query
The Resolution-Hint header
Resolution-Hint
The Accept-Ranges header
Accept-Ranges
The Protocol-Info header
Protocol-Info
The If-Modified-Since header
If-Modified-Since
The Want-Digest header
Want-Digest
The Set-Cookie2 header
Set-Cookie2
The Date header
Date
http://www3.ietf.org/proceedings/98dec/I-D/draft-mogul-http-dupsup-00.txt
Duplicate Suppression in HTTP
The Derived-From header
Derived-From
The Upgrade header
Upgrade
The Via header
Via
The UA-Color header
UA-Color
The Delta-Base header
Delta-Base
The Max-Forwards header
Max-Forwards
The Timeout header
Timeout
The Location header
Location
The Digest header
Digest
The Set-Cookie header
Set-Cookie
The C-Ext header
C-Ext
The Version header
Version
The Expires header
Expires
The Message-ID header
Message-ID
The Depth header
Depth
The Content-MD5 header
Content-MD5
The Redirect-Ref header
Redirect-Ref
The If-Match header
If-Match
The UA-Resolution header
UA-Resolution
The Accept-Charset header
Accept-Charset
The C-PEP header
C-PEP
The C-PEP-Info header
C-PEP-Info
The C-Opt header
C-Opt
The header
The Content-Range header
Content-Range
The P3P header
P3P
The Negotiate header
Negotiate
The Optional header
Optional
The DAV header
DAV
http://www.rfc-editor.org/rfc/rfc2616.txt
Hypertext Transfer Protocol -- HTTP/1.1
The Subst header
Subst
http://www.w3.org/TR/2000/NOTE-SOAP-20000508/
Simple Object Access Protocol (SOAP) 1.1
The Opt header
Opt
The A-IM header
A-IM
The Transfer-Encoding header
Transfer-Encoding
The Man header
Man
The Accept-Features header
Accept-Features
The Warning header
Warning
The Non-Compliance header
Non-Compliance
The Content-Style-Type header
Content-Style-Type
The Content-Length header
Content-Length
The Proxy-Authorization header
Proxy-Authorization
http://www.w3.org/Protocols/HTTP/Object_Headers.html
Object Header lines in HTTP
The Differential-ID header
Differential-ID
The User-Agent header
User-Agent
http://www.rfc-editor.org/rfc/rfc3229.txt
Delta encoding in HTTP
The If-Range header
If-Range
The SubOK header
SubOK
http://www.w3.org/TR/NOTE-jepi-970519
White Paper: Joint Electronic Payment Initiative
http://www.rfc-editor.org/rfc/rfc2324.txt
Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0)
The Range header
Range
http://www.w3.org/TR/2001/NOTE-edge-arch-20010804
Edge Architecture Specification
The SetProfile header
SetProfile
The Vary header
Vary
The Accept-Language header
Accept-Language
The overwrite header
Overwrite
http://www.w3.org/TR/WD-http-pep
PEP Specification: an Extension Mechanism for HTTP
The Status-URI header
Status-URI
http://tools.ietf.org/html/draft-ietf-atompub-protocol-17
The Atom Publishing Protocol
The From header
From
The Keep-Alive header
Keep-Alive
The Trailer header
Trailer
The Authorization header
Authorization
The GetProfile header
GetProfile
The Pep-Info header
Pep-Info
The C-Man header
C-Man
The URI header
URI
http://www.w3.org/TR/2002/REC-P3P-20020416/
The Platform for Privacy Preferences 1.0 (P3P1.0) Specification
The Surrogate-Control header
Surrogate-Control
http://www3.ietf.org/proceedings/98dec/I-D/draft-girod-w3-id-res-ext-00.txt
WIRE - W3 Identifier Resolution Extensions
The TCN header
TCN
The Cookie2 header
Cookie2
The Allow header
Allow
The Security-Scheme header
Security-Scheme
The WWW-Authenticate header
WWW-Authenticate
The ProfileObject header
ProfileObject
The Destination header
Destination
The Expect header
Expect
http://www.rfc-editor.org/rfc/rfc2109.txt
HTTP State Management Mechanism
The Cookie header
Cookie
The Accept-Additions header
Accept-Additions
http://www.rfc-editor.org/rfc/rfc2518.txt
HTTP Extensions for Distributed Authoring -- WEBDAV
The Content-Language header
Content-Language
http://www.rfc-editor.org/rfc/rfc2660.txt
The Secure HyperText Transfer Protocol
http://www.w3.org/TR/1999/REC-html401-19991224/
HTML 4.01 Specification
The Content-Script-Type header
Content-Script-Type
http://www.rfc-editor.org/rfc/rfc3230.txt
Instance Digests in HTTP
http://www.rfc-editor.org/rfc/rfc3648.txt
Web Distributed Authoring and Versioning (WebDAV) Redirect Reference Resources
The Last-Modified header
Last-Modified
The Variant-Vary header
Variant-Vary
http://www.rfc-editor.org/rfc/rfc2310.txt
The Safe Response Header Field
http://www.rfc-editor.org/rfc/rfc2295.txt
Transparent Content Negotiation in HTTP
The TE header
TE
The Connection header
Connection
The Server header
Server
The Content-ID header
Content-ID
The Proxy-Features header
Proxy-Features
The Host header
Host
The Content-Disposition header
Content-Disposition
The Position header
Position
The Content-Location header
Content-Location
http://www.rfc-editor.org/rfc/rfc2068.txt
Hypertext Transfer Protocol -- HTTP/1.1
The Surrogate-Capability header
Surrogate-Capability
The Age header
Age
The Accept header
Accept
The Proxy-Authentication-Info header
Proxy-Authentication-Info
The Safe header
Safe
The Content-Transfer-Encoding header
Content-Transfer-Encoding
The Title header
Title
The Resolver-Location header
Resolver-Location
The Protocol header
Protocol
The Default-Style header
Default-Style
The If-None-Match header
If-None-Match
The SoapAction header
SoapAction
The Meter header
Meter
The Compliance header
Compliance
The IM header
IM
http://www.watersprings.org/pub/id/draft-ietf-http-options-02.txt
Specification of HTTP/1.1 OPTIONS messages
The If-Unmodified-Since header
If-Unmodified-Since
The Public header
Public
The If header
If
The Content-Type header
Content-Type
The ETag header
ETag
The Apply-To-Redirect-Ref header
Apply-To-Redirect-Ref
http://www.rfc-editor.org/rfc/rfc2965.txt
HTTP State Management Mechanism
The alternates header
Alternates
The SLUG header
SLUG
The MIME-Version header
MIME-Version
The PICS-Label header
PICS-Label
The Content-Base header
Content-Base