Proxy-Authenticate
The "Proxy-Authenticate" header field consists of at least one challenge that indicates the authentication scheme(s) and parameters applicable to the proxy for this effective request URI (Section 5.5 of [RFC7230]). A proxy MUST send at least one Proxy-Authenticate header field in each 407 (Proxy Authentication Required) response that it generates.
Writing responses (servers)
Reading responses (clients)
The request should be retried with a Proxy-Authorization header.
Overview table
- Name
- Proxy-Authenticate
- Description
- Requests the user-agent authenticate to an intermediate proxy.
- Direction
- Response
- Advertises
- Proxy-Authorization
- Specification
- RFC 7235: HTTP/1.1 Authentication ยง4.3. Proxy-Authenticate
Syntax
Proxy-Authenticate = 1#challenge
challenge = auth-scheme [ 1*SP ( token68 / #auth-param ) ]
auth-scheme = token
auth-param = token BWS "=" BWS ( token / quoted-string )
token68 = 1*( ALPHA / DIGIT / "-" / "." / "_" / "~" / "+" / "/" ) *"="
auth-scheme
is one of the registered values in the Authentication Scheme Registry.
Example
Proxy-Authenticate: Basic realm="gateway"