GlobalExceptionHandlingMiddleware

GlobalExceptionHandlingMiddleware.cs

public class GlobalExceptionHandlingMiddleware : OwinMiddleware
    {
        private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
        public GlobalExceptionHandlingMiddleware(OwinMiddleware next) : base(next)
        {
        }

        public override async Task Invoke(IOwinContext context)
        {
            try
            {
                await Next.Invoke(context);
            }
            catch (Exception ex)
            {
                OnError(context, ex.InnerException ?? ex);
            }
        }

        static void OnError(IOwinContext context, Exception ex)
        {
            context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
            LogException(ex);
        }

        static void LogException(Exception exception)
        {
             Logger.Error(exception.Message, exception);
        }
    }

Startup.cs

public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app
                .UseCustomErrorPages()
                .Use<GlobalExceptionHandlingMiddleware>()
                .Use<SecurityBestPracticeMiddleware>()
                .UseNancy();
        }