Unix 套接字:AF_LOCAL 与 AF_INET [英] Unix Sockets : AF_LOCAL vs AF_INET

问题描述

我刚开始在 UNIX 中进行套接字编程，我正在阅读套接字系统调用的手册页.我对 AF_LOCAL 参数及其使用时间有些困惑.手册只说本地通信.AF_INET 格式不能用于本地通信吗?

I'm just starting with socket programming in UNIX and I was reading the man pages for the socket system call. I'm a bit confused about the AF_LOCAL argument and when it is used. The manual just says local communication. Wouldn't an AF_INET format also work for local communication?

推荐答案

AF_LOCAL 使用文件系统本地的 UNIX 域套接字，可用于内部通信.AF_INET 是一个 IP 套接字.AF_LOCAL 不会因通过 IP 发送数据而导致一些性能损失.请参阅该主题的古老但非常好的讨论.

AF_LOCAL uses UNIX domain sockets which are local to the filesystem and can be used for internal communications. AF_INET is an IP socket. AF_LOCAL will not incur some performance penalties related to sending data over IP. See this old but very nice discussion of the topic.

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