List of HTTP header fields

List of HTTP header fields - Wikipedia, the free encyclopedia

List of HTTP header fields

 

From Wikipedia, the free encyclopedia

Jump to: navigation,
search

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please improve this article by introducing more precise citations. (September 2010)

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (September 2010)

HTTP

Persistence · Compression · HTTPS

Request methods

OPTIONS · GET · HEAD · POST · PUT · DELETE · TRACE · CONNECT · PATCH

Header fields

Cookie · ETag · Location · Referer

DNT · X-Forwarded-For

Status codes

301 Moved permanently

302 Found

303 See Other

403 Forbidden

404 Not Found

This box: view talk edit

HTTP header fields are components of the message header of requests and responses in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction.

The header fields are transmitted after the request or response line, the first line of a message. Header fields are colon-separated name-value pairs in clear-text string format, terminated by a carriage return (CR) and line feed (LF) character sequence. The end of the header fields is indicated by an empty field, resulting in the transmission of two consecutive CR-LF pairs. Long lines can be folded into multiple lines; continuation lines are indicated by presence of space (SP) or horizontal tab (HT) as first character on next line. ^[1] Few fields can also contain comments (i.e. in. User-Agent, Server, Via fields), which can be ignored by software.^[2]