def writeBytes(self, s):
        """
        Write a string of bytes to the data stream.
        """
        l = len(s)

        if l > 0xffff:
            self.writeType(TYPE_LONGSTRING)
        else:
            self.writeType(TYPE_STRING)

        if l > 0xffff:
            self.stream.write_ulong(l)
        else:
            self.stream.write_ushort(l)

        self.stream.write(s)
Write a string of bytes to the data stream.