HTTP status codes

Some HTTP status code

Some HTTP status codes include:

100	Continue	See also the request header `Expect`
101	Switching Protocols	See also the `Upgrade` request header.
200	OK
201	Created	A resource was created on the server. Typically used after `POST` (why?) and sometimes after `PUT` requests.
202	Accepted
203	Non-Authoritative Information
204	No Content
205	Reset Content
206	Partial Content
300	Multiple Choices
301	Moved Permanently	The `Location` response header contains the URL to which a resource has moved. See also the `-L` option of `curl`. Comapre with 307.
302	Found	Was previously referred to as «Moved temporarily»
303	See Other
304	Not Modified	See the `ETag` and `If-None-Matched` headers. Compare with the 412 status code.
305	Use Proxy	Deprecated
306	not used anymore	This status code was used to indicate Switch Proxy
307	Temporary Redirect	Compare with 301.
308	Permanent Redirect	described in RFC 7538
400	Bad Request
401	Unauthorized	Used to indicate authentication. Must include a `WWW-Authenticate` header field and a challenge.
402	Payment Required	Rarely used (and there is no standard convention)
403	Forbidden
404	Not Found	The client was able to contact the web server, but the web server was unable find the requested resource (possibly because the client has a typo in the request). Compare with 410
405	Method not allowed
406	Not Acceptable	Might be sent if a server cannot serve a document in one of the languages requested with the `Accept-Language` or encodings requested with the `Accept-Encoding` request headers
407	Proxy Authentication Required	See also the `Proxy-Authenticate` and `Proxy-Authorization` headers.
408	Request Timeout
409	Conflict
410	Gone	This resource was likely available in the past but was removed. Compare with 404.
411	LengthRequired
412	Precondition Failed	412 is returned when the ETag/If-Match mechanism detected a mid-air collision. Compare with status 304.
413	Request Entity Too Large
414	Request Uri Too Long
415	Unsupported Media Type
416	Range Not Satisfiable	See also the `Range` request header.
417	Expectation Failed	See also the request header `Expect`.
418	I'm a teapot	Published in RFC 2324, 1 April 1998.
421	Misdirected Content
422	Locked	WebDAV
424	Failed Dependency	WebDAV
425	Too Early	Experimental
425	Upgrade Required
428	Precondition Required	optional: clients cannot rely upon this status code to prevent «lost update» conflicts.
429	Too Many Requests	User has sent too many requests in a given amount of time (rate limiting). This status might come with a `Retry-After` response header. Compare with Status code 503. See also with DoD (Denial of Service) attacks.
431	Request Header Fields Too Large	server is unwilling to process the request because its header fields are too large.
426	Upgrade Required
451	Unavailable For Legal Reasons
500	Internal Server Error	For example in an Apache Web Server because an `.htaccess` file is corrupt.
501	Not implemented	The request method is either not understood by web server, or it is not implemented in the web server.
502	Bad Gateway	A server that acts as a gateway or proxy received an invalid response from its upstream server.
503	Service Unavailable	Should be sent with the `Retry-After` response header. Compare with status code 429.
504	Gateway Timeout
505	HTTP Version Not Supported
511	Network Authentication Required	client needs to authenticate to gain network access.

When creating this list, the .NET enumeration System.Net.HttpStatusCode was helpful in the following PowerShell foreach statement:

foreach ($e in [enum]::GetValues([System.Net.HttpStatusCode])) { 
   "$($e.value__) $e"
}

429

HTTP/1.1 429 Too Many Requests
Content-Type: text/html
Retry-After: 3600

HTTP status codes

Some HTTP status code

429

See also