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

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

Answer 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.

Answer 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

Answer 4

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
    }
  },

Answer 5

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

Thus changing .UseStartup<Startup>()

to

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

Answer 6

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();
}