def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def connection_made(self, transport):
        self.transport = transport
        # Here the buffer is intended to be copied, so that the outgoing buffer
        # won't be wrongly updated by next read
        self.buffer = bytearray(256 * 1024)