CODEWITHSUNDEEP
httpstatushttp-proxy
jochen
jochen

Reputation: 3940

HTTP status code to indicate that proxy doesn't support CONNECT

How should an HTTP proxy, when receiving a CONNECT request from the client, indicate that the proxy does not support CONNECT? I tried to read RFC2817, but didn't find any information about the case when CONNECT is not supported.

Upvotes: 1

Views: 89

Answers (1)

Mathias R. Jessen
Mathias R. Jessen

Reputation: 175065

HTTP 405 Method Not Allowed

CONNECT, despite its distinct behavior, is still a request method, and according to RFC 2616 section 10.4.6 (CONNECT was originally specified as a reserved verb in RFC2616), HTTP 405 should be used when:

The method specified in the Request-Line is not allowed for the
resource identified by the Request-URI. The response MUST include an
Allow header containing a list of valid methods for the requested
resource.

RFCs 7230 and 7231 which updates and obsoletes both the original HTTP/1.1 specification as well as RFC2817 makes no mention of recommended responses to indicate CONNECT as not supported, in which case I assume the above still to be a valid interpretation

Upvotes: 4

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