Added IP and Referel url to error email

Teknik/App_Start/SubdomainRoute.cs

@@ -47,8 +47,8 @@ namespace Teknik
             if (routeData == null) return null; // Only look at the subdomain if this route matches in the first place.
             string subdomain = httpContext.Request.QueryString["sub"]; // A subdomain specified as a query parameter takes precedence over the hostname.
             string host = httpContext.Request.Headers["Host"];
-            string curSub = host.GetSubdomain();
             string domain = host.GetDomain();
+            string curSub = host.GetSubdomain();
 
             // special consideration for 'dev' subdomain
             if (subdomain == null || subdomain == "dev")

Teknik/Areas/Error/Controllers/ErrorController.cs

@@ -148,8 +148,10 @@ namespace Teknik.Areas.Error.Controllers
 Message: {0}
 
 Source: {1}
+IP Address: {2}
+Referer Address: {3} 
 
-Stack Trace: {2}", ex.GetFullMessage(true), ex.Source, ex.StackTrace);
+Stack Trace: {4}", ex.GetFullMessage(true), ex.Source, GetIPAddress(), Request.UrlReferrer.AbsoluteUri, ex.StackTrace);
                 mail.BodyEncoding = UTF8Encoding.UTF8;
                 mail.DeliveryNotificationOptions = DeliveryNotificationOptions.Never;
 
@@ -157,5 +159,22 @@ Stack Trace: {2}", ex.GetFullMessage(true), ex.Source, ex.StackTrace);
             }
             catch (Exception) { /* don't handle something in the handler */ }
         }
+
+        private string GetIPAddress()
+        {
+            System.Web.HttpContext context = System.Web.HttpContext.Current;
+            string ipAddress = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
+
+            if (!string.IsNullOrEmpty(ipAddress))
+            {
+                string[] addresses = ipAddress.Split(',');
+                if (addresses.Length != 0)
+                {
+                    return addresses[0];
+                }
+            }
+
+            return context.Request.ServerVariables["REMOTE_ADDR"];
+        }
     }
 }