HTTP Status Codes

Server has received request headers; client should proceed with body.

Server is switching protocols as requested (e.g., Upgrade to WebSocket).

Early hints for resources the browser should preload.

Request succeeded. Standard response for successful HTTP requests.

Request fulfilled, resulting in the creation of a new resource.

Request accepted for processing, but processing has not completed.

Request succeeded, but there is no content to return.

Server is delivering only part of the resource (range header).

Resource has permanently moved to a new URL.

Resource temporarily moved to a different URL.

Cached version is still valid; no response body needed.

Temporary redirect; request method must not be changed.

Permanent redirect; request method must not be changed.

Malformed request syntax or invalid parameters.

Authentication is required and has failed or not been provided.

Reserved for future use; sometimes used for digital payment schemes.

Server refuses to authorize request; permissions insufficient.

Requested resource could not be found.

HTTP method is not supported for this endpoint.

Server timed out waiting for the client request.

Request conflicts with current state of the resource.

Resource is permanently gone and will not be available again.

Request payload exceeds server limits.

Media format of the data is not supported by the server.

April Fools HTCPCP joke: server refuses to brew coffee with a teapot. 🫖

Syntax is valid but semantic instructions cannot be processed.

User has sent too many requests in a given amount of time.

Resource access is denied due to legal demands.

Unexpected condition encountered on the server.

Server does not recognize or support the request method.

Server received an invalid response from upstream server.

Server is temporarily unable to handle the request (overloaded/down).

Server acted as a gateway and timed out waiting for upstream.

Server is unable to store the representation needed to complete request.

Client must authenticate to gain network access (e.g., WiFi portal).