Client Error

407 Proxy Authentication Required

Similar to 401 Unauthorized, but indicates that the client needs to authenticate itself in order to use a proxy.

The proxy MUST send a Proxy-Authenticate header field containing a challenge applicable to the proxy for the target resource. The client MAY repeat the request with a new or replaced Proxy-Authorization header field.

Source: RFC7235 Section 3.2

References for code 407

Rails HTTP Status Symbol:proxy_authentication_required
Go HTTP Status Constanthttp.StatusProxyAuthRequired
Symfony HTTP Status ConstantResponse::HTTP_PROXY_AUTHENTICATION_REQUIRED
Python 2 HTTP Status Constanthttplib.PROXY_AUTHENTICATION_REQUIRED
Python 3+ HTTP Status Constanthttp.client.PROXY_AUTHENTICATION_REQUIRED
Python 3.5+ HTTP Status Constanthttp.HTTPStatus.PROXY_AUTHENTICATION_REQUIRED