{"action":"created","comment":{"url":"https://api.github.com/repos/Azure/azure-webjobs-sdk-script/pulls/comments/137898636","pull_request_review_id":61633042,"id":137898636,"diff_hunk":"@@ -0,0 +1,86 @@\n+﻿// Copyright (c) .NET Foundation. All rights reserved.\n+// Licensed under the MIT License. See License.txt in the project root for license information.\n+\n+using System.IO;\n+using System.Net;\n+using System.Net.Http;\n+using System.Reflection;\n+using System.Threading.Tasks;\n+using Microsoft.Azure.WebJobs.Script.Config;\n+using Microsoft.Azure.WebJobs.Script.Description;\n+\n+namespace Microsoft.Azure.WebJobs.Script.WebHost.Config\n+{\n+    /// <summary>\n+    /// Contains methods related to standby mode (placeholder) app initialization.\n+    /// </summary>\n+    public static class StandbyManager\n+    {\n+        private const string WarmUpFunctionName = \"WarmUp\";\n+        private const string WarmUpAlternateRoute = \"CSharpHttpWarmup\";\n+\n+        public static async Task<HttpResponseMessage> WarmUp(HttpRequestMessage request, WebScriptHostManager scriptHostManager)\n+        {\n+            var queryParams = request.GetQueryParameterDictionary();\n+            string value = null;\n+            if (queryParams.TryGetValue(\"restart\", out value) && string.Compare(\"1\", value) == 0)\n+            {\n+                scriptHostManager.RestartHost();\n+                await scriptHostManager.DelayUntilHostReady();\n+            }\n+\n+            await StandbyManager.WarmUp(scriptHostManager.Instance);\n+\n+            return new HttpResponseMessage(HttpStatusCode.OK);\n+        }\n+\n+        public static bool IsWarmUpRequest(HttpRequestMessage request)\n+        {\n+            return ScriptSettingsManager.Instance.IsAzureEnvironment &&\n+                WebScriptHostManager.InStandbyMode &&\n+                request.IsAntaresInternalRequest() &&\n+                (request.MatchRoute($\"api/{WarmUpFunctionName}\") || request.MatchRoute($\"api/{WarmUpAlternateRoute}\"));\n+        }\n+\n+        public static async Task WarmUp(ScriptHost host)\n+        {\n+            // exercise the Node pipeline\n+            await NodeFunctionInvoker.InitializeAsync();","path":"src/WebJobs.Script.WebHost/StandbyManager.cs","position":48,"original_position":48,"commit_id":"32f5dd8cd4c5724148001bc76bcb638119e4efc3","original_commit_id":"32f5dd8cd4c5724148001bc76bcb638119e4efc3","user":{"login":"mathewc","id":1056548,"avatar_url":"https://avatars3.githubusercontent.com/u/1056548?v=4","gravatar_id":"","url":"https://api.github.com/users/mathewc","html_url":"https://github.com/mathewc","followers_url":"https://api.github.com/users/mathewc/followers","following_url":"https://api.github.com/users/mathewc/following{/other_user}","gists_url":"https://api.github.com/users/mathewc/gists{/gist_id}","starred_url":"https://api.github.com/users/mathewc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mathewc/subscriptions","organizations_url":"https://api.github.com/users/mathewc/orgs","repos_url":"https://api.github.com/users/mathewc/repos","events_url":"https://api.github.com/users/mathewc/events{/privacy}","received_events_url":"https://api.github.com/users/mathewc/received_events","type":"User","site_admin":false},"body":"Idea 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