ProtocolCodes

Abstract

RFC 9110 defines the semantics of the Hypertext Transfer Protocol (HTTP), including the meaning of request methods, status codes, and header fields. It obsoletes RFC 7231, RFC 7232, RFC 7233, RFC 7235, and portions of other earlier HTTP specifications, consolidating the core semantic layer of HTTP.

Defined Status Codes

HTTP 100 Continue HTTP 101 Switching Protocols HTTP 200 OK HTTP 201 Created HTTP 202 Accepted HTTP 204 No Content HTTP 206 Partial Content HTTP 301 Moved Permanently HTTP 302 Found HTTP 303 See Other HTTP 304 Not Modified HTTP 307 Temporary Redirect HTTP 308 Permanent Redirect HTTP 400 Bad Request HTTP 401 Unauthorized HTTP 403 Forbidden HTTP 404 Not Found HTTP 405 Method Not Allowed HTTP 408 Request Timeout HTTP 409 Conflict HTTP 410 Gone HTTP 413 Content Too Large HTTP 414 URI Too Long HTTP 415 Unsupported Media Type HTTP 422 Unprocessable Content HTTP 500 Internal Server Error HTTP 501 Not Implemented HTTP 502 Bad Gateway HTTP 503 Service Unavailable HTTP 504 Gateway Timeout

Defined Terms

Idempotency Safe Methods Content Negotiation Status Code Media Type (MIME Type) Response Header Request Method (HTTP Verb) Redirect Conditional Request Authentication HTTP Semantics (RFC 9110) URI (Uniform Resource Identifier)

Obsoletes

RFC 7235 Hypertext Transfer Protocol (HTTP/1.1): Authentication RFC 7231 Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content