Azure Worker Role for hosting an Owin application

WorkerRole.cs

namespace Your.Product.Namespace
{
    public class WorkerRole : RoleEntryPoint, IDisposable
    {
        readonly TaskCompletionSource<bool> _endRole = new TaskCompletionSource<bool>();
        readonly ManualResetEvent _runCompleteEvent = new ManualResetEvent(false);
        IDisposable _app;
        bool _disposed = false;

        ~WorkerRole()
        {
            Dispose(false);
        }

        public override void Run()
        {
            var httpEndpoint = RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Http"];
            var httpsEndpoint = RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Https"];

            var httpUri = string.Format("{0}://{1}", httpEndpoint.Protocol, httpEndpoint.IPEndpoint);
            var httpsUri = string.Format("{0}://{1}", httpsEndpoint.Protocol, httpsEndpoint.IPEndpoint);

            var options = new StartOptions();
            options.Urls.Add(httpUri);
            options.Urls.Add(httpsUri);

            try
            {
                _app = WebApp.Start<Startup>(options);
                _endRole.Task.Wait();
            }
            catch (Exception ex)
            {
              ... do whatever logging you need.
              throw;
            }
            finally
            {
                _runCompleteEvent.Set();
            }
        }
        
        public override void OnStop()
        {
            _endRole.SetResult(true);
            _runCompleteEvent.WaitOne();
            _app.Dispose();
            base.OnStop();
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (!disposing || _disposed) { return; }

            if (_runCompleteEvent != null)
            {
                _runCompleteEvent.Dispose();
            }

            if (_app != null)
            {
                _app.Dispose();
                _app = null;
            }

            _disposed = true;
        }
    }
}