如何删除 CLOSE_WAIT 套接字连接 [英] How do I remove a CLOSE_WAIT socket connection

问题描述

我编写了一个小程序，可以与特定端口上的服务器进行交互.该程序运行良好，但是:

I have written a small program that interacts with a server on a specific port. The program works fine, but:

一旦程序意外终止，并且此后套接字连接显示为 CLOSE_WAIT 状态.如果我尝试运行一个程序，它会挂起，我必须强制关闭它，这会累积更多 CLOSE_WAIT 套接字连接.

Once the program terminated unexpectedly, and ever since that socket connection is shown in CLOSE_WAIT state. If I try to run a program it hangs and I have to force it close, which accumulates even more CLOSE_WAIT socket connections.

有没有办法刷新这些连接?

Is there a way to flush these connections?

推荐答案

CLOSE_WAIT 表示你的程序仍在运行，并且还没有关闭套接字(内核正在等待它这样做)).将 -p 添加到 netstat 以获取 pid，然后更强力地杀死它(如果需要，使用 SIGKILL).那应该摆脱你的 CLOSE_WAIT 套接字.您也可以使用 ps 来查找 pid.

CLOSE_WAIT means your program is still running, and hasn't closed the socket (and the kernel is waiting for it to do so). Add -p to netstat to get the pid, and then kill it more forcefully (with SIGKILL if needed). That should get rid of your CLOSE_WAIT sockets. You can also use ps to find the pid.

SO_REUSEADDR 用于服务器和 TIME_WAIT 套接字，因此不适用于此处.

SO_REUSEADDR is for servers and TIME_WAIT sockets, so doesn't apply here.

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