NET Core中如何获取当前进程的监听端口？ [英] how to get current process listening ports in .net core?

问题描述

创建一个cmd进程并调用 netstat 可能会获得监听端口，但是它很复杂并且创建可能很慢，任何内置方法都可以做到这一点？

create a cmd process and call netstat may get listening ports, but it's complicated and create may be slowly, any build-in method can does this?

我发现 IPGlobalProperties.GetIPGlobalProperties（）。GetActiveTcpListeners（），但这将返回所有tcp侦听器，而没有进程信息。

I found IPGlobalProperties.GetIPGlobalProperties().GetActiveTcpListeners(), but this will return all tcp listener and without process info.

推荐答案

有一种方法可以获取当前的 Address：Port

There is a way to get current Address:Port, which i figure out, while starting the project.

关键点是，您必须至少定义一次 ASPNETCORE_URLS 来自外包源。如果您不这样做，.net核心不会设置DefaultEnpoints ，这会直接导致无法访问的 address：port 。

The critical thing is that you must define at least once 'ASPNETCORE_URLS' somehow from out-source. If you dont do that .net core doesn't set DefaultEnpoints which causes unreachable address:port directly.

Startup.cs

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        String ServerAddress = app.ServerFeatures.Get<IServerAddressesFeature>().Addresses.FirstOrDefault();
        Console.WriteLine($"ServerInfo: {ServerAddress}");
        ...
    }

CMD（Windows）

set ASPNETCORE_URLS = http://localhost:2020 && dotnet MyProject.dll

Docker

docker run --rm -it -p 2020:80 -e ASPNETCORE_URLS="http://localhost:2020" MyProjectImage

注意：

如果不尝试使用环境变量（ASPNETCORE_URLS），您将看到空的地址集合

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