THeader enumeration

In unit HTTPProtocol

Enumeration of standard HTTP 1.1 headers.

Declaration

pascal

THeader = (hhUnknown,hhAccept,hhAcceptCharset,hhAcceptEncoding,
 hhAcceptLanguage,hhAcceptRanges,hhAge,hhAllow,
 hhAuthorization,hhCacheControl,hhConnection,
 hhContentEncoding,hhContentLanguage,hhContentLength,
 hhContentLocation,hhContentMD5,hhContentRange,hhContentType,
 hhDate,hhETag,hhExpires,hhExpect,hhFrom,hhHost,hhIfMatch,
 hhIfModifiedSince,hhIfNoneMatch,hhIfRange,
 hhIfUnModifiedSince,hhLastModified,hhLocation,hhMaxForwards,
 hhPragma,hhProxyAuthenticate,hhProxyAuthorization,hhRange,
 hhReferer,hhRetryAfter,hhServer,hhTE,hhTrailer,
 hhTransferEncoding,hhUpgrade,hhUserAgent,hhVary,hhVia,
 hhWarning,hhWWWAuthenticate)

Description

This enumeration defines all standard HTTP 1.1 headers as defined in RFC 2616, plus some commonly used non-standard headers like X-Requested-With, Cookie, and Set-Cookie.

Values

`hhUnknown`	Unknown or unrecognized header type.
`hhAccept`	Accept header - specifies acceptable response media types.
`hhAcceptCharset`	Accept-Charset header - specifies acceptable character encodings.
`hhAcceptEncoding`	Accept-Encoding header - specifies acceptable content encodings.
`hhAcceptLanguage`	Accept-Language header - specifies acceptable natural languages.
`hhAcceptRanges`	Accept-Ranges header - indicates server support for range requests.
`hhAge`	Age header - indicates response age in seconds.
`hhAllow`	Allow header - lists supported HTTP methods for resource.
`hhAuthorization`	Authorization header - contains client authentication credentials.
`hhCacheControl`	Cache-Control header - specifies caching directives.
`hhConnection`	Connection header - controls connection persistence.
`hhContentEncoding`	Content-Encoding header - specifies content compression method.
`hhContentLanguage`	Content-Language header - specifies content natural language.
`hhContentLength`	Content-Length header - specifies content size in bytes.
`hhContentLocation`	Content-Location header - specifies alternative resource location.
`hhContentMD5`	Content-MD5 header - contains MD5 hash of content.
`hhContentRange`	Content-Range header - specifies partial content range.
`hhContentType`	Content-Type header - specifies media type of content.
`hhDate`	Date header - specifies message origination date and time.
`hhETag`	ETag header - provides entity tag for caching validation.
`hhExpires`	Expires header - specifies response expiration date and time.
`hhExpect`	Expect header - indicates expected server behaviors.
`hhFrom`	From header - contains user agent email address.
`hhHost`	Host header - specifies target host and port number.
`hhIfMatch`	If-Match header - makes request conditional on entity tag.
`hhIfModifiedSince`	If-Modified-Since header - makes request conditional on modification date.
`hhIfNoneMatch`	If-None-Match header - makes request conditional on entity tag mismatch.
`hhIfRange`	If-Range header - makes range request conditional on entity tag or date.
`hhIfUnModifiedSince`	If-Unmodified-Since header - makes request conditional on lack of modification.
`hhLastModified`	Last-Modified header - specifies resource last modification date.
`hhLocation`	Location header - specifies redirect or resource location.
`hhMaxForwards`	Max-Forwards header - limits number of proxy forwards.
`hhPragma`	Pragma header - contains implementation-specific directives.
`hhProxyAuthenticate`	Proxy-Authenticate header - specifies proxy authentication method.
`hhProxyAuthorization`	Proxy-Authorization header - contains proxy authentication credentials.
`hhRange`	Range header - specifies partial content ranges to retrieve.
`hhReferer`	Referer header - specifies referring page URI.
`hhRetryAfter`	Retry-After header - specifies delay before retry attempt.
`hhServer`	Server header - specifies server software information.
`hhTE`	TE header - specifies acceptable transfer encodings.
`hhTrailer`	Trailer header - specifies header fields in chunked encoding trailer.
`hhTransferEncoding`	Transfer-Encoding header - specifies message body encoding method.
`hhUpgrade`	Upgrade header - specifies protocol upgrade options.
`hhUserAgent`	User-Agent header - specifies client software information.
`hhVary`	Vary header - specifies headers affecting response selection.
`hhVia`	Via header - specifies intermediate proxy information.
`hhWarning`	Warning header - provides additional warning information.
`hhWWWAuthenticate`	WWW-Authenticate header - specifies server authentication method.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.

THeader enumeration

Declaration

Description

See also

Values