说明：  VB6使用的Socket控件源码，参考了网上的代码，经过反复优化精简，仍然存在win7和win10的兼容问题。最后研究通讯机制好几天，重写的代码兼容性很好。特别是消息回调机制，思路很新奇。
(VB6 used Socket control source code, reference to the code on the Internet, after repeated optimization and streamlining, there are still Win7 and Win10 compatibility problems. Finally, after studying the communication mechanism for several days, the code rewritten is well compatible. In particular, the message callback mechanism is very novel.)