add missing macro USE_DISCONNECTEX switch #705
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windows上现在默认用的wepoll，没有编译使用这个文件了 |
我之前以为开了USE IOCP会启用重叠IO这个文件实现。。这个重叠IO为什么不打算用了？据说iocp+overlapio才是socket通讯性能极限。 |
因为select、poll、epoll、kqueue这些都是reactor模型，事件到来然后进行读写，而iocp+overlapio是proactor模型，先投递读写，然后通知完成，这两种模型不太好统一，所以目前在windows上是使用了wepoll来调用iocp实现reactor模型，没有使用到overlapio |
我看后续规划中有支持linux的io_uring考虑，这个应该和iocp+overlapio类似吧 |
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event/overlapio.c 行397存在这个宏开关