Requests
| Field name | Description | Example |
|---|---|---|
| Accept | Content-Types that are acceptable | Accept: text/plain |
| Accept-Charset | Character sets that are acceptable | Accept-Charset: utf-8 |
| Accept-Encoding | Acceptable encodings. See HTTP compression. | Accept-Encoding: gzip, deflate |
| Accept-Language | Acceptable human languages for response | Accept-Language: en-US |
| Accept-Datetime | Acceptable version in time | Accept-Datetime: Thu, 31 May 2007 20:35:00 GMT |
| Authorization | Authentication credentials for HTTP authentication | Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ== |
| Cache-Control | Used to specify directives that MUST be obeyed by all caching mechanisms along the request/response chain | Cache-Control: no-cache |
| Connection | What type of connection the user-agent would prefer | Connection: keep-alive |
| Cookie | an HTTP cookie previously sent by the server with Set-Cookie (below) | Cookie: $Version=1; Skin=new; |
| Content-Length | The length of the request body in octets (8-bit bytes) | Content-Length: 348 |
| Content-MD5 | A Base64-encoded binary MD5 sum of the content of the request body | Content-MD5: Q2hlY2sgSW50ZWdyaXR5IQ== |
| Content-Type | The MIME type of the body of the request (used with POST and PUT requests) | Content-Type: application/x-www-form-urlencoded |
| Date | The date and time that the message was sent | Date: Tue, 15 Nov 1994 08:12:31 GMT |
| Expect | Indicates that particular server behaviors are required by the client | Expect: 100-continue |
| From | The email address of the user making the request | From: user@example.com |
| Host | The domain name of the server (for virtual hosting), and the TCP port number on which the server is listening. The port number may be omitted if the port is the standard port for the service requested. Mandatory since HTTP/1.1. Although domain name are specified as case-insensitive, it is not specified whether the contents of the Host field should be interpreted in a case-insensitive manner and in practice some implementations of virtual hosting interpret the contents of the Host field in a case-sensitive manner. | Host: en.wikipedia.org:80
|
| If-Match | Only perform the action if the client supplied entity matches the same entity on the server. This is mainly for methods like PUT to only update a resource if it has not been modified since the user last updated it. | If-Match: "737060cd8c284d8af7ad3082f209582d" |
| If-Modified-Since | Allows a 304 Not Modified to be returned if content is unchanged | If-Modified-Since: Sat, 29 Oct 1994 19:43:31 GMT |
| If-None-Match | Allows a 304 Not Modified to be returned if content is unchanged, see HTTP ETag | If-None-Match: "737060cd8c284d8af7ad3082f209582d" |
| If-Range | If the entity is unchanged, send me the part(s) that I am missing; otherwise, send me the entire new entity | If-Range: "737060cd8c284d8af7ad3082f209582d" |
| If-Unmodified-Since | Only send the response if the entity has not been modified since a specific time. | If-Unmodified-Since: Sat, 29 Oct 1994 19:43:31 GMT |
| Max-Forwards | Limit the number of times the message can be forwarded through proxies or gateways. | Max-Forwards: 10 |
| Pragma | Implementation-specific headers that may have various effects anywhere along the request-response chain. | Pragma: no-cache |
| Proxy-Authorization | Authorization credentials for connecting to a proxy. | Proxy-Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ== |
| Range | Request only part of an entity. Bytes are numbered from 0. | Range: bytes=500-999 |
| Referer | This is the address of the previous web page from which a link to the currently requested page was followed. (The word “referrer” is misspelled in the RFC as well as in most implementations.) | Referer: http://en.wikipedia.org/wiki/Main_Page |
| TE | The transfer encodings the user agent is willing to accept: the same values as for the response header Transfer-Encoding can be used, plus the "trailers" value (related to the "chunked" transfer method) to notify the server it expects to receive additional headers (the trailers) after the last, zero-sized, chunk. | TE: trailers, deflate |
| Upgrade | Ask the server to upgrade to another protocol. | Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11 |
| User-Agent | The user agent string of the user agent | User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20100101 Firefox/12.0 |
| Via | Informs the server of proxies through which the request was sent. | Via: 1.0 fred, 1.1 example.com (Apache/1.1) |
| Warning | A general warning about possible problems with the entity body. | Warning: 199 Miscellaneous warning |
Read more about this topic: List Of HTTP Header Fields
Famous quotes containing the word requests:
“I haven’t seen so much tippy-toeing around since the last time I went to the ballet. When members of the arts community were asked this week about one of their biggest benefactors, Philip Morris, and its requests that they lobby the New York City Council on the company’s behalf, the pas de deux of self- justification was so painstakingly choreographed that it constituted a performance all by itself.”
—Anna Quindlen (b. 1952)
“Do not worry about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.”
—Bible: New Testament, Philippians 4:6.