[semidet,multifile]http:authenticate_client(+URL,
+Action)This hooks is called by http_open/3
with the following Action value:
- send_auth_header(+AuthData, +Out, +Options)
- Called when sending the initial request. AuthData contains
the value for the http_open/3
option
authorization(AuthData) and Out is a
stream on which to write additional HTTP headers.
- auth_reponse(+Headers, +OptionsIn, -Options)
- Called if the server replies with a 401 code, challenging the client.
Our implementation adds a
request_header(authorization=Digest) header to Options,
causing
http_open/3 to retry the request
with the additional option.