def host
      @env[Merb::Const::HTTP_X_FORWARDED_HOST] || @env[Merb::Const::HTTP_HOST] ||
        @env[Merb::Const::SERVER_NAME]
    end
def host
      @env[Merb::Const::HTTP_X_FORWARDED_HOST] || @env[Merb::Const::HTTP_HOST] ||
        @env[Merb::Const::SERVER_NAME]
    end
==== Returns
 String:: The full hostname including the port.

 :api: public