4×× - Client Error

405 Method Not Allowed

The method received in the request-line is known by the origin server but not supported by the target resource.

The origin server MUST generate an Allow header field in a 405 response containing a list of the target resource’s currently supported methods.

A 405 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls¹.

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• ¹ Calculating Heuristic Freshness RFC7234 Section 4.2.2
• Source: RFC7231 Section 6.5.5

405 Code References

• Rails HTTP Status Symbol: :method_not_allowed
• Go HTTP Status Constant: http.StatusMethodNotAllowed
• Symfony HTTP Status Constant: Response::HTTP_METHOD_NOT_ALLOWED
• Python2 HTTP Status Constant: httplib.METHOD_NOT_ALLOWED
• Python3+ HTTP Status Constant: http.client.METHOD_NOT_ALLOWED
• Python3.5+ HTTP Status Constant: http.HTTPStatus.METHOD_NOT_ALLOWED