NewHeaderAuthenticator returns a new authenticator.Request that authenticates requests based on the X-Remote-User, X-Remote-Group, and X-Remote-Extra headers.

NewHeaderRoundTripper returns a new round tripper that adds the given headers to the request.

NewTransportWrapperFunc returns a new transport.WrapperFunc that adds the given headers to the request.

NewX509Authenticator creates a new authenticator that authenticates requests based on the provided client certificate.