Added more aspnet core implementation of interfaces

src/Umbraco.Web.BackOffice/AspNetCore/AspNetCoreHostingEnvironment.cs

@@ -26,10 +26,15 @@ namespace Umbraco.Web.BackOffice.AspNetCore
             // IISVersion = HttpRuntime.IISVersion;
             IsDebugMode =  _hostingSettings.DebugMode;
         }
-
+        public bool IsHosted { get; } = true;
         public string SiteName { get; }
         public string ApplicationId { get; }
         public string ApplicationPhysicalPath { get; }
+
+        public string ApplicationVirtualPath { get; }
+        public bool IsDebugMode { get; }
+
+
         public string LocalTempPath
         {
             get
@@ -67,9 +72,7 @@ namespace Umbraco.Web.BackOffice.AspNetCore
                 }
             }
         }
-        public string ApplicationVirtualPath { get; }
-        public bool IsDebugMode { get; }
-        public bool IsHosted { get; } = true;
+
         public Version IISVersion { get; }
         public string MapPath(string path) => Path.Combine(_webHostEnvironment.WebRootPath, path);
 

src/Umbraco.Web.BackOffice/AspNetCore/AspNetCoreHttpContextAccessor.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Web;
-using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http;
 
 namespace Umbraco.Web.BackOffice.AspNetCore
 {

src/Umbraco.Web.BackOffice/AspNetCore/AspNetCoreIpResolver.cs

@@ -1,4 +1,3 @@
-using System;
 using Microsoft.AspNetCore.Http;
 using Umbraco.Net;
 
@@ -13,6 +12,6 @@ namespace Umbraco.Web.BackOffice.AspNetCore
             _httpContextAccessor = httpContextAccessor;
         }
 
-        public string GetCurrentRequestIpAddress() => _httpContextAccessor?.HttpContext?.Connection?.RemoteIpAddress?.ToString() ?? String.Empty;
+        public string GetCurrentRequestIpAddress() => _httpContextAccessor?.HttpContext?.Connection?.RemoteIpAddress?.ToString() ?? string.Empty;
     }
 }

src/Umbraco.Web.BackOffice/AspNetCore/AspNetCoreUmbracoApplicationLifetime.cs

@@ -0,0 +1,36 @@
+using System.Threading;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Umbraco.Net;
+
+namespace Umbraco.Web.AspNet
+{
+    public class AspNetCoreUmbracoApplicationLifetime : IUmbracoApplicationLifetime
+    {
+        private readonly IHttpContextAccessor _httpContextAccessor;
+        private readonly IApplicationLifetime _applicationLifetime;
+
+        public AspNetCoreUmbracoApplicationLifetime(IHttpContextAccessor httpContextAccessor, IApplicationLifetime applicationLifetime)
+        {
+            _httpContextAccessor = httpContextAccessor;
+            _applicationLifetime = applicationLifetime;
+        }
+
+        public bool IsRestarting { get; set; }
+        public void Restart()
+        {
+            IsRestarting = true;
+
+            var httpContext = _httpContextAccessor.HttpContext;
+            if (httpContext != null)
+            {
+                // unload app domain - we must null out all identities otherwise we get serialization errors
+                // http://www.zpqrtbnk.net/posts/custom-iidentity-serialization-issue
+                httpContext.User = null;
+            }
+
+            Thread.CurrentPrincipal = null;
+            _applicationLifetime.StopApplication();
+        }
+    }
+}

src/Umbraco.Web.BackOffice/AspNetCore/AspNetCoreUserAgentProvider.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore.Http;
+using Umbraco.Net;
+
+namespace Umbraco.Web.BackOffice.AspNetCore
+{
+    public class AspNetCoreUserAgentProvider : IUserAgentProvider
+    {
+        private readonly IHttpContextAccessor _httpContextAccessor;
+
+        public AspNetCoreUserAgentProvider(IHttpContextAccessor httpContextAccessor)
+        {
+            _httpContextAccessor = httpContextAccessor;
+        }
+
+        public string GetUserAgent()
+        {
+            return _httpContextAccessor.HttpContext.Request.Headers["User-Agent"].ToString();
+        }
+    }
+}