当缺少一种机制来通知你的应用程序所发生的这种情况：“连接已经建立了，正在等待客户端数据”，这将意味着有可能出现客户端只发出连接请求，但是不发送数据。
However, the application is not notified that a connection has been accepted before data is received. That means a client could connect to your server and not send any data.
当缺少一种机制来通知你的应用程序所发生的这种情况：“连接已经建立了，正在等待客户端数据”，这将意味着有可能出现客户端只发出连接请求，但是不发送数据。
However, the application is not notified that a connection has been accepted before data is received. That means a client could connect to your server and not send any data.
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