Unable to start ASP.NET Core with HTTPS

Question

I have a WPF application, which starts a ASP.NET core WEB API application.

When I start the WEB API project as the startup project with these configurations, it works fine for HTTPS. But, when I try to launch this application from WPF environment, it's not working for HTTPS.

Configurations:

Web API configuration:

In Startup.cs file:

public void ConfigureServices(IServiceCollection services)
        {

                services.AddMvc();

                services.Configure<MvcOptions>(options =>
                {
                    options.Filters.Add(new RequireHttpsAttribute());
                });
        }

The Main method looks like this:

public static void InitHttpServer()
    {
        var host = new WebHostBuilder()
            .UseKestrel()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseIISIntegration()
            .UseStartup<Startup>()
            .UseUrls("https://localhost:44300/")
            //.UseApplicationInsights()
            .Build();

        host.Run();
    }

When I check the port using netstat command, it shows:

Postman says:

Neither the debugger on the action method in the application is being hit.

P.S. : When I revert the changes for HTTPS and try use HTTP, it works fine.

The main method for HTTP has different port and none of the configuration changes mentioned above.

I think you need to configure somewhere which certificate should be used. — Julian
– Julian, Commented Jun 19, 2017 at 19:30
When I run the Web API application as a startup project it works fine and no certificate are required. Would it require one when initiated from inside of some WPF application? — XYZ
– XYZ, Commented Jun 19, 2017 at 19:34

Travis Boatman · Accepted Answer · 2017-06-19 21:03:47Z

3

When you enable SSL in the web server settings your enabling SSL for IIS not your application. When you launch the web API from Visual Studio its running behind IIS as a reverse proxy service. This is why you get SSL only when you run it as the startup project. When you run it from your WPF application the API is running on Kestrel only.

So to enable SSL on Kestrel you need to add a cert then pass it in when setting up Kestrel.

var cert = new X509Certificate2("YourCert.pfx", "password");

var host = new WebHostBuilder()
    .UseKestrel(cfg => cfg.UseHttps(cert))
    .UseContentRoot(Directory.GetCurrentDirectory())
    .UseIISIntegration()
    .UseStartup<Startup>()
    .UseUrls("https://localhost:44300/")
    //.UseApplicationInsights()
    .Build();

answered Jun 19, 2017 at 21:03

Travis Boatman

2,28218 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

XYZ Over a year ago

took me some time to generate a .pfx and configure it on the browser for the Postman. But worked straight away! Thanks! Is there a way to use IIS, if I want to, with this setup (from inside of WPF)?

Travis Boatman Over a year ago

Yeah you could. You would need to launch IIS from your WPF app and configure it to listen to port 44300 (or whatever you assign it to) and enable SSL. How to tho, is beyond my knowledge. Good luck.

Valentin Petkov · Accepted Answer · 2022-06-15 05:08:07Z

0

Enforce HTTPS in ASP.NET Core
https://learn.microsoft.com/en-us/aspnet/core/security/enforcing-ssl?view=aspnetcore-6.0&tabs=visual-studio

Developing locally with ASP.NET Core under HTTPS, SSL, and Self-Signed Certs
https://www.hanselman.com/blog/developing-locally-with-aspnet-core-under-https-ssl-and-selfsigned-certs

Generate self-signed certificates with the .NET CLI
https://learn.microsoft.com/en-us/dotnet/core/additional-tools/self-signed-certificates-guide

edited Jun 15, 2022 at 5:08

answered Jun 15, 2022 at 4:32

Valentin Petkov

1,66619 silver badges23 bronze badges

Collectives™ on Stack Overflow

Unable to start ASP.NET Core with HTTPS

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related