FIXED Client identification number privacy issue.
固定客户识别号码的隐私问题。
This chat server is pretty simple. It is so simple that it is lacking some very basic features such as an identification of who sent each message or handling the case where a client disconnects.
这个聊天服务器十分简单，它缺少一些非常基础的功能，比如识别是谁发送哪条消息，或者处理某个客户端断开的情况。
The first of these parameters is the client id which is a string based identification for the client which must be unique to each MQTT client connecting to the broker.
第一个参数是客户机id，它是基于字符串的客户机的标识，必须对每一个连接到代理的MQTT客户机唯一。
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