405 Method Not Allowed
405 Method Not Allowed should be returned by a server when a certain
HTTP method is not supported at a resource.
It’s a bit different from 403 Forbidden. 403 suggest that the server
might support the HTTP request, but the client doesn’t have the right
privileges to do the HTTP request.
405 Method Not Allowed means that the HTTP method is simply not supported.
For example, a client might do a POST request on a resource where POST
is not implemented or it’s meaningless.
A server generating the 405 response must also tell the client which HTTP
methods it can do, using the Allow header.
Example
HTTP/1.1 405 Method Not Allowed
Content-Type: text/html
Allow: GET, HEAD, OPTIONS, PUT
<h1>405 Try another method!</h1>
Well, the next couple of weeks are going to be pretty quiet on the web, so I’m taking a short break of these series and see you back January 8th!
References
- RFC7231, Section 6.5.5 - 405 Method Not Allowed
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