rfc2217.py 文件源码

def rfc2217_send_subnegotiation(self, option, value=b''):
        """Subnegotiation of RFC 2217 parameters."""
        value = value.replace(IAC, IAC_DOUBLED)
        self.connection.write(to_bytes([IAC, SB, COM_PORT_OPTION, option] + list(value) + [IAC, SE]))

    # - check modem lines, needs to be called periodically from user to
    # establish polling