# File lib/rhc/rest/httpclient.rb, line 126
        def set(uri, user, passwd)
          @set = true
          if uri.nil?
            @cred = DeferredCredential.new(user, passwd)
          else
            uri = uri_dirname(urify(uri))
            @auth[uri] = DeferredCredential.new(user, passwd)
          end
        end