Added support for asp.net cores application lifetime

http://www.khalidabuhakmeh.com/looking-at-asp-net-cores-iapplicationlifetime

Author: niemyjski

src/Platforms/Exceptionless.AspNetCore/ExceptionlessExtensions.cs

@@ -7,6 +7,7 @@
 using Exceptionless.Models;
 using Exceptionless.Models.Data;
 using Exceptionless.Plugins.Default;
+using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -24,6 +25,9 @@ public static IApplicationBuilder UseExceptionless(this IApplicationBuilder app,
             var diagnosticListener = app.ApplicationServices.GetRequiredService<DiagnosticListener>();
             diagnosticListener?.SubscribeWithAdapter(new ExceptionlessDiagnosticListener(client));
 
+            var lifetime = app.ApplicationServices.GetRequiredService<IApplicationLifetime>();
+            lifetime.ApplicationStopping.Register(() => client.ProcessQueue());
+
             return app.UseMiddleware<ExceptionlessMiddleware>(client);
         }
 
@@ -44,10 +48,10 @@ public static IApplicationBuilder UseExceptionless(this IApplicationBuilder app,
         /// <param name="settings">The configuration settings</param>
         public static void ReadFromConfiguration(this ExceptionlessConfiguration config, IConfiguration settings) {
             if (config == null)
-                throw new ArgumentNullException("config");
+                throw new ArgumentNullException(nameof(config));
 
             if (settings == null)
-                throw new ArgumentNullException("settings");
+                throw new ArgumentNullException(nameof(settings));
 
             var section = settings.GetSection("Exceptionless");
 

src/Platforms/Exceptionless.AspNetCore/project.json

@@ -1,4 +1,4 @@
-{
+{
     "version": "99.99.99-dev",
     "title": "Exceptionless client for ASP.NET Core",
     "authors": [ "Exceptionless" ],
@@ -32,6 +32,7 @@
         "Exceptionless": {
             "target": "project"
         },
+        "Microsoft.AspNetCore.Hosting.Abstractions": "1.0.0",
         "Microsoft.AspNetCore.Http": "1.0.0",
         "Microsoft.AspNetCore.Http.Abstractions": "1.0.0",
         "Microsoft.AspNetCore.Http.Extensions": "1.0.0",