HTTPステータスコードリファレンス

Server received request headers, client should proceed

Server is switching protocols as requested

Server is processing the request (WebDAV)

Used to return response headers before final response

Request succeeded

Request succeeded, new resource created

Request accepted for processing

Metadata from third-party copy

No content to send, headers may be useful

Reset the document that sent this request

Partial resource due to Range header

Multiple status codes (WebDAV)

DAV binding already reported (WebDAV)

Multiple options for the resource

Resource moved permanently to new URL

Resource temporarily moved to different URL

Response found at another URI using GET

Resource not modified since last request

Temporary redirect, keep HTTP method

Permanent redirect, keep HTTP method

Server cannot process due to client error

Authentication required

Reserved for future use

Server refuses to authorize

Resource not found

HTTP method not allowed

No content conforming to Accept headers

Proxy authentication needed

Server timed out waiting for request

Request conflicts with server state

Resource permanently deleted

Content-Length header required

Precondition in headers not met

Request entity too large

URI too long for server

Media format not supported

Range specified can't be fulfilled

Expect header cannot be met

Server refuses to brew coffee with teapot

Request well-formed but has semantic errors

Resource is locked (WebDAV)

Request failed due to previous request

Server unwilling to risk early request

Client should switch protocols

Request must be conditional

Rate limited, too many requests

Headers too large

Blocked for legal reasons

Generic server error

Server does not support functionality

Invalid response from upstream server

Server not ready, often overloaded

Gateway did not get response in time

HTTP version not supported

Content negotiation error

Server unable to store (WebDAV)

Infinite loop detected (WebDAV)

Further extensions required

Network authentication needed