Client processes communicate with the pseudo daemon through a UNIX-domain socket (that's a socket in the file system) rather than using TCP or UDP.

客户机进程通过unix域套接字(即文件系统中的套接字)与pseudo守护进程进行通信，而不是使用TCP或UDP进行通信。

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The domain, type, and protocol argument values specify the family, type, and protocol to assign to the created socket.

type 和 protocol 参数值指定系列、类型和协议，以分配给创建的套接字。

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The address of a socket in the Internet domain consists of the Internet address of the host machine (every computer on the Internet has a unique 32 bit address, often referred to as its IP address).

互联网模式的地址格式是一个机器地址（一般是使用32字节代表的IP地址）。

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