我怎么能强行关闭的TcpListener [英] How can I forcibly close a TcpListener

问题描述

我有过的TCPListener通信的服务。
问题是，当用户重新启动服务 - 一个地址已在使用抛出异常，服务无法启动几分钟的左右

I have a service which communicates through tcpListener. Problem is when the user restarts the service - an "Address already in use" exception is thrown, and the service cannot be started for a couple of minutes or so.

时有告知系统终止旧的连接，所以我可以打开一个新的方法吗？ （我不能只使用随机端口，因为没有办法为服务，通知客户端是什么端口，所以我们必须依靠一个预定义的端口）

Is there's any way of telling the system to terminate the old connection so I can open a new one? (I can't just use random ports because there is no way for the service to notify the clients what is the port, so we must depend on a predefined port)

推荐答案

设置绑定到侦听端口前的 SO_REUSEADDR 套接字选项。它看起来像对应的.NET代码是这样的：

Set the SO_REUSEADDR socket option before binding to the listening port. It looks like the corresponding .NET code is something like:

SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, 1);

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