When either of them receives data, it writes the data to the other socket.
当它们其中一个收到数据时，就会将数据写到另一个套接字。
When a client connects to the server socket, it will give me a socket representing that connection.
当一个客户端连接到该服务器套接字时，它将为我提供一个套接字，显示连接。
Each socket has a socket queue, and each interface has an interface queue used for data communication.
每个套接字具有一个套接字队列，并且每个接口具有一个用于数据通信的接口队列。
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