Styjun

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?

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://*:80") // <-----
 .Build();

 host.Run();

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

In Asp.net core 2.0 WebApp, if you are using visual studio search LaunchSettings.json. I am adding my LaunchSettings.json, you can change port no as u can see.

In visual studio 2017 we can change the port number from LaunchSetting.json

In Properties-> LaunchSettings.json.

Open LaunchSettings.json and change the Port Number.

Change the port Number in json file

We can use this command to run our host project via Windows Powershell without IIS and visual studio on a separate port. Default of krestel web server is 5001

$env:ASPNETCORE_URLS="http://localhost:22742" ; dotnet run

you can also code like this

 IConfiguration config = new ConfigurationBuilder()
 .AddCommandLine(args)
 .Build(); 
 var host = new WebHostBuilder()
 .UseConfiguration(config)
 .UseKestrel()
 .UseContentRoot(Directory.GetCurrentDirectory()) 
 .UseStartup<Startup>()
 .Build();

and set up your application by command line :dotnet run --server.urls http://*:5555

Go to your program.cs file add UseUrs method to set your url, make sure you don't use a reserved url or port

 public class Program
 
 public static void Main(string[] args)
 
 BuildWebHost(args).Run();
 

 public static IWebHost BuildWebHost(string[] args) =>
 WebHost.CreateDefaultBuilder(args)
 .UseStartup<Startup>()

 // params string[] urls
 .UseUrls(urls: "http://localhost:10000")

 .Build();