Added IExceptionHandlerPathFeature interface.

src/Microsoft.AspNetCore.Diagnostics.Abstractions/IExceptionHandlerPathFeature.cs

@@ -0,0 +1,17 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.AspNetCore.Diagnostics
+{
+    /// <summary>
+    /// Represents an exception handler with the original path of the request.
+    /// </summary>
+    public interface IExceptionHandlerPathFeature : IExceptionHandlerFeature
+    {
+        /// <summary>
+        /// The portion of the request path that identifies the requested resource. The value
+        /// is un-escaped.
+        /// </summary>
+        string Path { get; }
+    }
+}

src/Microsoft.AspNetCore.Diagnostics/ExceptionHandler/ExceptionHandlerFeature.cs

@@ -5,8 +5,10 @@ using System;
 
 namespace Microsoft.AspNetCore.Diagnostics
 {
-    public class ExceptionHandlerFeature : IExceptionHandlerFeature
+    public class ExceptionHandlerFeature : IExceptionHandlerPathFeature
     {
         public Exception Error { get; set; }
+
+        public string Path { get; set; }
     }
 }

src/Microsoft.AspNetCore.Diagnostics/ExceptionHandler/ExceptionHandlerMiddleware.cs

@@ -22,8 +22,8 @@ namespace Microsoft.AspNetCore.Diagnostics
         private readonly DiagnosticSource _diagnosticSource;
 
         public ExceptionHandlerMiddleware(
-            RequestDelegate next, 
-            ILoggerFactory loggerFactory, 
+            RequestDelegate next,
+            ILoggerFactory loggerFactory,
             IOptions<ExceptionHandlerOptions> options,
             DiagnosticSource diagnosticSource)
         {
@@ -65,8 +65,10 @@ namespace Microsoft.AspNetCore.Diagnostics
                     var exceptionHandlerFeature = new ExceptionHandlerFeature()
                     {
                         Error = ex,
+                        Path = originalPath.Value,
                     };
                     context.Features.Set<IExceptionHandlerFeature>(exceptionHandlerFeature);
+                    context.Features.Set<IExceptionHandlerPathFeature>(exceptionHandlerFeature);
                     context.Response.StatusCode = 500;
                     context.Response.OnStarting(_clearCacheHeadersDelegate, context.Response);