想要改变TCP关闭超时-wanttochangeTCPclosingtimeout

We have a client server application in use on our suse linux server.
Sometimes it happens, that on the client side the tcp socket somehow goes away and on the server side the other end of the socket remains existent.

我们在suse linux服务器上使用了一个客户端服务器应用程序。有时它会发生，在客户端，tcp套接字会以某种方式消失，而在服务器端，套接字的另一端仍然存在。

At the end of the day, when we stop the backend on the linux server, the backend tries to close all remaining tcp connections, also those "zombie" sockets.

在一天结束时，当我们停止linux服务器上的后端时，后端会尝试关闭所有剩余的tcp连接，也就是那些“僵尸”套接字。

(I watch this with strace).

（我用strace看这个）。

When the backend tries to close a tcp connection, where there is nothing anymore on the client side, it sends a [FIN, ACK] packet to the target. And of course, nothing comes back.

当后端尝试关闭tcp连接时，客户端不再存在任何内容，它会向目标发送[FIN，ACK]数据包。当然，什么也没有回来。

The backend repeats to send this packet. The first time it waits only a few hundredths of a second to repeat it, then, it waits longer and longer. At the end it waits seconds to repeat it. But, after 15 seconds, there is a timeout, and it goes on to end another tcp connection.

后端重复发送此数据包。它第一次只等几百分之一秒重复它，然后，它等待的时间越来越长。最后它等待几秒钟重复它。但是，15秒后，有一个超时，它继续结束另一个TCP连接。

Now, I do not know where this 15 second timeout is coming from. I would like to change it.

现在，我不知道这15秒超时的来源。我想改变它。

Thank you very much in advance.

非常感谢你提前。

1 个解决方案