How to change the port number for Asp.Net core app

问题:

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?

回答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 Properties\launchSettings.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.

回答2:

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.

回答3:

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

回答4:

Use following one line of code .UseUrls("http://*:80") in Program.cs

Thus changing .UseStartup<Startup>()

to

.UseStartup<Startup>() .UseUrls("http://*:80")

回答5:

It's working to me.

I use Asp.net core 2.2 (this way supported in asp.net core 2.1 and upper version).

add Kestrel section in appsettings.json file. like this:

{
  "Kestrel": {
    "EndPoints": {
      "Http": {
        "Url": "http://localhost:4300"
      }
    }
  },
  "Logging": {
    "LogLevel": {
      "Default": "Warning"
    }
  },
  "AllowedHosts": "*"
}

and in Startup.cs:

public Startup(IConfiguration configuration, IHostingEnvironment env)
{
      var builder = new ConfigurationBuilder()
         .SetBasePath(env.ContentRootPath)
         .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
         .AddEnvironmentVariables();

      Configuration = builder.Build();
}

回答6:

All the other answer accounts only for http URLs. If the URL is https, then do as follows,

1. Open launchsettings.json under Properties of the API project.

   

2. Change the sslPort under iisSettings -> iisExpress

A sample launchsettings.json will look as follows

{
  "iisSettings": {
    "iisExpress": {
      "applicationUrl": "http://localhost:12345",
      "sslPort": 98765 <== Change_This
    }
  },

回答7:

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

回答8:

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();
    }

回答9:

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