Parse the SSH2_MSG_KEXGSS_HOSTKEY message (client mode).

        :param `.Message` m: The content of the SSH2_MSG_KEXGSS_HOSTKEY message

def _parse_kexgss_hostkey(self, m):
        """
        Parse the SSH2_MSG_KEXGSS_HOSTKEY message (client mode).

        :param `.Message` m: The content of the SSH2_MSG_KEXGSS_HOSTKEY message
        """
        # client mode
        host_key = m.get_string()
        self.transport.host_key = host_key
        sig = m.get_string()
        self.transport._verify_key(host_key, sig)
        self.transport._expect_packet(MSG_KEXGSS_CONTINUE, MSG_KEXGSS_COMPLETE)