我使用的是同一台机器上的多个自承载的WCF服务。我需要打开他们每个人不同的端口（明显），所以我用网络：TCP：// localhost：0程序。作为地址，因为我想它会分配一个自由港这样

I'm using multiple self-hosted WCF services on the same machine. I need to open each of them on a different port (obviously), so I used "net:tcp://localhost:0" as address since I figured it would assign a free port this way.

现在我需要知道哪些端口已实际分配。这code在服务器上运行，所以我需要的本地的端口。我该怎么办呢？

Now I need to know which port was assigned actually. This code runs on the server, so I need the local port. How do I do that?

推荐答案

找到东西的作品，即使它是一个有点脏。相反，会自动分配一个端口，一个自由港的明确要求，并用于创建服务：

Found something that works, even though it is a bit dirty. Instead of automatically assigning a port, a free port is explicitly requested and used to create the service:

Address = "net.tcp://localhost:" + FindFreeTcpPort ();

private static int FindFreeTcpPort ()
{
    TcpListener l = new TcpListener (IPAddress.Parse ("127.0.0.1"), 0);
    l.Start ();
    int port = ((IPEndPoint) l.LocalEndpoint).Port;
    l.Stop ();
    return port;
}

（该方法code是here)