Standalone web API with OWIN on EC2

Question

I followed the step-by-step instructions from http://www.asp.net/web-api/overview/hosting-aspnet-web-api/use-owin-to-self-host-web-api .

Here is the console application code:

namespace OWINTest
{
class Program
  {
    static void Main(string[] args)
    {
        string baseAddress = "http://localhost:1961/";
        // Start OWIN host 
        WebApp.Start<Startup>(url: baseAddress);
        ...
    }
  }
class Startup
  {
    // This code configures Web API. The Startup class is specified as a type
    // parameter in the WebApp.Start method.
    public void Configuration(IAppBuilder appBuilder)
    {
        // Configure Web API for self-host. 
        HttpConfiguration config = new HttpConfiguration();
        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        appBuilder.UseWebApi(config);
    }
  }
public class ValuesController : ApiController
  {
    public IEnumerable<string> Get()
    {
        return new string[] { "value1", "value2" };
    }
  }
}

The following is true:

• OWIN server is running (can connect from one computer using Fiddler, browser)
• An instance of the EC2 instance opens in incoming traffic through the security group.
• No other processes are listening on this port.
• OWIN Version - Microsoft.AspNet.WebApi.OwinSelfHost 5.2.2
• .NET 4.5 installed on an EC2 instance

The problem I am facing:

HTTP/1.1 502 - Connection Failed error when calling http://(uc2-00-000-000-us-west-1.compute.amazonaws.com):1961/api/values with the following message: The connection to 'ec2-00-000-000-us-west-1.compute.amazonaws.com' failed. Error: TimedOut (0x274c). System.Net.Sockets.SocketException A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 

I tried the following without success:

 1. 'netsh http add urlacl url=http://localhost:1961 user=everyone'
 2. 'netsh http add urlacl url=http://+:1961 user=everyone'
 3. 'netsh http add urlacl url=http://*:1961 user=everyone'

Answer 1

http://+:1961/ , Windows owin-, urlacl. :

• owin Windows local system, urlacl.
• owin .