SOL_SOCKET的作用是什么? [英] What is SOL_SOCKET used for?

问题描述

如Linux man页中所述

As it is stated in the Linux man page

将此常量用作getsockopt或setsockopt的级别参数，以操纵本节中介绍的套接字级别选项

Use this constant as the level argument to getsockopt or setsockopt to manipulate the socket-level options described in this section

但是我没有得到这个解释. SOL_SOCKET的目的是什么?它有什么作用?

But I don't get this explanation. What is the purpose of SOL_SOCKET? What does it do?

推荐答案

SOL_SOCKET是套接字层本身.它用于与协议无关的选项.

SOL_SOCKET is the socket layer itself. It is used for options that are protocol independent.

您可以在这里.

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