From 25cfe0193ce44dc71ab4a3a1bbb088adacfbbb9d Mon Sep 17 00:00:00 2001
From: Shannon <sdeminick@gmail.com>
Date: Tue, 22 Sep 2015 12:19:14 +0200
Subject: [PATCH] adds detailed shutdown info to logs by default

---
 src/Umbraco.Core/UmbracoApplicationBase.cs | 44 +++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

diff --git a/src/Umbraco.Core/UmbracoApplicationBase.cs b/src/Umbraco.Core/UmbracoApplicationBase.cs
index 5b9c8903c6..6aadbd269a 100644
--- a/src/Umbraco.Core/UmbracoApplicationBase.cs
+++ b/src/Umbraco.Core/UmbracoApplicationBase.cs
@@ -1,5 +1,7 @@
 using System;
+using System.Diagnostics;
 using System.Linq;
+using System.Reflection;
 using System.Web;
 using System.Web.Hosting;
 using log4net;
@@ -180,7 +182,47 @@ namespace Umbraco.Core
         {
             if (SystemUtilities.GetCurrentTrustLevel() == AspNetHostingPermissionLevel.Unrestricted)
             {
-                Logger.Info<UmbracoApplicationBase>("Application shutdown. Reason: " + HostingEnvironment.ShutdownReason);
+                //Try to log the detailed shutdown message (typical asp.net hack: http://weblogs.asp.net/scottgu/433194)
+                try
+                {
+                    var runtime = (HttpRuntime)typeof(HttpRuntime).InvokeMember("_theRuntime",
+                                BindingFlags.NonPublic
+                                | BindingFlags.Static
+                                | BindingFlags.GetField,
+                                null,
+                                null,
+                                null);
+                    if (runtime == null)
+                        return;
+
+                    var shutDownMessage = (string)runtime.GetType().InvokeMember("_shutDownMessage",
+                        BindingFlags.NonPublic
+                        | BindingFlags.Instance
+                        | BindingFlags.GetField,
+                        null,
+                        runtime,
+                        null);
+
+                    var shutDownStack = (string)runtime.GetType().InvokeMember("_shutDownStack",
+                        BindingFlags.NonPublic
+                        | BindingFlags.Instance
+                        | BindingFlags.GetField,
+                        null,
+                        runtime,
+                        null);
+
+                    var shutdownMsg = string.Format("{0}\r\n\r\n_shutDownMessage={1}\r\n\r\n_shutDownStack={2}",
+                        HostingEnvironment.ShutdownReason,
+                        shutDownMessage,
+                        shutDownStack);
+
+                    Logger.Info<UmbracoApplicationBase>("Application shutdown. Details: " + shutdownMsg);
+                }
+                catch (Exception)
+                {
+                    //if for some reason that fails, then log the normal output
+                    Logger.Info<UmbracoApplicationBase>("Application shutdown. Reason: " + HostingEnvironment.ShutdownReason);
+                }
             }
             OnApplicationEnd(sender, e);