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

User · Answer

3 files have to changed appsettings json  see the last section - kestrel    launchsettings json - applicationurl commented out  and a 2 lines change in Startup cs Add below code in appsettings json file and port to any as you wish          quot Kestrel quot          quot Endpoints quot            quot Http quot              quot Url quot    quot http   localhost 5003 quot                         Modify Startup cs with below lines  using Microsoft AspNetCore Server Kestrel Core  services Configure lt KestrelServerOptions gt  Configuration GetSection  quot Kestrel quot

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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

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in appsetting json    quot DebugMode quot   false   quot Urls quot    quot http   localhost 8082 quot

User · Answer

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 lt Startup gt                 UseUrls  http     80       lt -----              Build             host Run      A step by step guide using an external config file is available here

User · Answer

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

User · Answer

you can also code like this           IConfiguration config    new ConfigurationBuilder            AddCommandLine args           Build             var host   new WebHostBuilder             UseConfiguration config            UseKestrel             UseContentRoot Directory GetCurrentDirectory               UseStartup lt Startup gt              Build      and set up your application by command line  dotnet run --server urls http     5555

User · Answer

Maybe it s because I am not using Core yet  My project didn t have a LaunchSettings json file but that did prompt me to look in the project properties  I found it under the Web tab and simply changed the project url

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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

User · Answer

in your hosting json  replace Url    http   localhost 80  by Url    http     80  and you will be able now access to your application by http   your local machine ip 80  for example http   192 168 1 4 80

User · Answer

All the other answer accounts only for http URLs  If the URL is https  then do as follows    Open launchsettings json under Properties of the API project    Change the sslPort under iisSettings - gt  iisExpress   A sample launchsettings json will look as follows       iisSettings          iisExpress            applicationUrl    http   localhost 12345          sslPort   98765  lt    Change This

User · Answer

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

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If you want to run on a specific port 60535 while developing locally but want to run app on port 80 in stage prod environment servers  this does it  Add to environmentVariables section in launchSettings json  quot ASPNETCORE DEVELOPER OVERRIDES quot    quot Developer-Overrides quot    and then modify Program cs to public static IHostBuilder CreateHostBuilder string   args    gt              Host CreateDefaultBuilder args                   ConfigureWebHostDefaults webBuilder   gt                                        webBuilder UseKestrel options   gt                                                var devOverride   Environment GetEnvironmentVariable  quot ASPNETCORE DEVELOPER OVERRIDES quot                            if   string IsNullOrWhiteSpace devOverride                                                         options ListenLocalhost 60535                                                     else                                                       options ListenAnyIP 80                                                                         UseStartup lt Startup gt                         UseNLog

User · Answer

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    gt              WebHost CreateDefaultBuilder args                   UseStartup lt Startup gt                        params string   urls                  UseUrls urls   http   localhost 10000                     Build

User · Answer

Use following one line of code  UseUrls  http     80   in Program csThus changing  UseStartup lt Startup gt    to UseStartup lt Startup gt     UseUrls  http     80

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

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