ÇUnix套接字。信号处理 [英] C unix sockets. Signals to handle

问题描述

我在一个插座AF_INET处理哪一种信号，服务器和客户端？

which kind of signal i've to handle in a AF_INET socket, both server and client side?

推荐答案

根据你如何做你正在做什么，你的可能的必须处理 SIG_PIPE ，它可以发生在连接任意打破。

Depending on how you're doing what you're doing, you may have to handle SIG_PIPE, which can happen when the connection is arbitrarily broken.

您不应该处理任何其他信号。

You should not have to handle any other signals.

如果您使用的是选择（）或调查（）或（个人preference）的epoll（）您应该检查错误（例如， POLLHUP ）的前的您检查读/写可用性。

If you are using select() or poll() or (personal preference) epoll() you should check for errors (eg, POLLHUP) before you check for read/write availability.

您也应该检查的返回值的read（）/写（）/发送（）/的recv（）。如果有错误，它们返回-1，但如果他们返回0，这意味着另一端断开。也就是说，0读不只是意味着0字节宣读但连接还是不错的。事实并非如此。关闭套接字。这是通过POSIX规定。

You should also always check the return value of read()/write()/send()/recv(). If there's an error, they return -1, but if they return 0, that means the other end disconnected. Ie, a read of 0 does just mean 0 bytes were read but the connection is still good. It isn't. Close the socket. This is stipulated by POSIX.

这篇关于ÇUnix套接字。信号处理的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！