HTTPステータスコード

The server has received the request headers and the client should proceed to send the request body.

The server is switching protocols as requested by the client.

The request has succeeded. The meaning of the success depends on the HTTP method.

The request has been fulfilled and resulted in a new resource being created.

The server successfully processed the request but is not returning any content.

The requested resource has been permanently moved to a new URL.

The requested resource temporarily resides under a different URL.

The resource has not been modified since the last request. Use the cached version.

The server could not understand the request due to invalid syntax.

The client must authenticate itself to get the requested response.

The client does not have access rights to the content.

The server cannot find the requested resource.

The request method is known by the server but is not supported by the target resource.

The server would like to shut down this unused connection.

The request conflicts with the current state of the server.

The requested resource has been permanently removed and will not be available again.

The user has sent too many requests in a given amount of time (rate limiting).

The server has encountered a situation it does not know how to handle.

The server received an invalid response from an upstream server.

The server is not ready to handle the request. It may be overloaded or down for maintenance.

The server is acting as a gateway and did not receive a timely response from the upstream server.