c# - How to change the port number for Asp.Net core app?

Question

I added the following section in project.json.

  "commands": {
    "run": "run server.urls=http://localhost:8082",
    "web": "Microsoft.AspNet.Hosting --server Microsoft.AspNet.Server.Kestrel --server.urls http://localhost:8082",
    "weblistener": "Microsoft.AspNet.Hosting --server WebListener --server.urls http://localhost:8082"
  },

However, it still shows "Now listening on: http://localhost:5000" when run it using dotnet myapp.dll?

BTW, will clients from other machine be able to access the service?

Answer 1

Yes this will be accesible from other machines if you bind on any external IP address. For example binding to http://*:80 . Note that binding to http://localhost:80 will only bind on 127.0.0.1 interface and therefore will not be accesible from other machines.

Visual Studio is overriding your port. You can change VS port editing this file PropertieslaunchSettings.json or else set it by code:

        var host = new WebHostBuilder()
            .UseKestrel()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseIISIntegration()
            .UseStartup<Startup>()
            .UseUrls("http://localhost:80") // <-----
            .Build();

        host.Run();

A step by step guide using an external config file is available here.