HTTPステータスコード

100 Continue

Continue – initial part of request received, waiting for rest

101 Switching Protocols

Switching Protocols – server switching protocols as requested

102 Processing

Processing – request is being processed (WebDAV)

200 OK

OK – request successfully processed

201 Created

Created – new resource created

202 Accepted

Accepted – request accepted but not yet processed

203 Non-Authoritative Information

Non-Authoritative Information – request successful but info may be from another source

204 No Content

No Content – request successful but no content returned

205 Reset Content

Reset Content – request successful, reset document view

206 Partial Content

Partial Content – partial GET request fulfilled

207 Multi-Status

Multi-Status – XML message with multiple status codes (WebDAV)

208 Already Reported

Already Reported – binding member already enumerated (DAV)

226 IM Used

IM Used – server fulfilled request with instance operations

300 Multiple Choices

Multiple Choices – multiple actions available for request

301 Moved Permanently

Moved Permanently – resource moved to new URL permanently

302 Move Temporarily

Found – resource temporarily at different URI

303 See Other

See Other – use GET at different URI to retrieve response

304 Not Modified

Not Modified – resource not modified since last request

305 Use Proxy

Use Proxy – resource only accessible through proxy

306 Switch Proxy

Switch Proxy – no longer used

307 Temporary Redirect

Temporary Redirect – resource temporarily at different URI

308 Permanent Redirect

Permanent Redirect – all future requests use new URI

400 Bad Request

Bad Request – server cannot understand request syntax

401 Unauthorized

Unauthorized – authentication required

402 Payment Required

Payment Required – reserved for future use

403 Forbidden

Forbidden – server refuses to process request

404 Not Found

Not Found – server cannot find requested resource

405 Method Not Allowed

Method Not Allowed – request method not supported

406 Not Acceptable

Not Acceptable – cannot generate acceptable response

407 Proxy Authentication Required

Proxy Authentication Required – proxy authentication required

408 Request Timeout

Request Timeout – server timed out waiting for request

409 Conflict

Conflict – request conflicts with server state

410 Gone

Gone – resource permanently deleted

411 Length Required

Length Required – Content-Length header required

412 Precondition Failed

Precondition Failed – request precondition not met

413 Request Entity Too Large

Payload Too Large – request entity exceeds server limit

414 Request-URI Too Long

URI Too Long – URI too long for server to process

415 Unsupported Media Type

Unsupported Media Type – request format not supported

416 Requested Range Not Satisfiable

Range Not Satisfiable – requested range not available

417 Expectation Failed

Expectation Failed – Expect header requirement not met

418 I'm a teapot

I'm a teapot – RFC 2324 April Fools joke

421 Misdirected Request

Misdirected Request – request sent to wrong server

422 Unprocessable Entity

Unprocessable Entity – semantic error in request (WebDAV)

423 Locked

Locked – resource is locked (WebDAV)

424 Failed Dependency

Failed Dependency – previous request caused failure (WebDAV)

425 Too Early

Too Early – server unwilling to risk replay attack

426 Upgrade Required

Upgrade Required – client should switch to TLS/1.0

429 Too Many Requests

Too Many Requests – rate limit exceeded

431 Request Header Fields Too Large

Request Header Fields Too Large – header fields too large

449 Retry With

Retry With – retry after appropriate action (Microsoft extension)

451 Unavailable For Legal Reasons

Unavailable For Legal Reasons – resource unavailable due to legal reasons

500 Internal Server Error

Internal Server Error – generic server error

501 Not Implemented

Not Implemented – server does not support functionality

502 Bad Gateway

Bad Gateway – invalid upstream response

503 Service Unavailable

Service Unavailable – server temporarily unavailable

504 Gateway Timeout

Gateway Timeout – upstream server timeout

505 HTTP Version Not Supported

HTTP Version Not Supported – HTTP protocol version not supported

506 Variant Also Negotiates

Variant Also Negotiates – internal server configuration error

507 Insufficient Storage

Insufficient Storage – server cannot store required content

509 Bandwidth Limit Exceeded

Bandwidth Limit Exceeded – bandwidth limit reached (unofficial)

510 Not Extended

Not Extended – required policy not satisfied

511 Network Authentication Required

Network Authentication Required – network authentication needed