def proxy_uri(self, value):
        """
        Set the Proxy-Uri option of a request.

        :param value: the Proxy-Uri value
        """
        option = Option()
        option.number = defines.OptionRegistry.PROXY_URI.number
        option.value = str(value)
        self.add_option(option)
Set the Proxy-Uri option of a request.

        :param value: the Proxy-Uri value