Microsoft.Azure.WebJobs.Script.WebHost.WebScriptHostManager.WarmUp C# (CSharp) Method

        public static void WarmUp(WebHostSettings settings)
        {
            var traceWriter = new FileTraceWriter(Path.Combine(settings.LogPath, "Host"), TraceLevel.Info);
            ScriptHost host = null;
            try
            {
                traceWriter.Info("Warm up started");

                string rootPath = settings.ScriptPath;
                if (Directory.Exists(rootPath))
                {
                    Directory.Delete(rootPath, true);
                }
                Directory.CreateDirectory(rootPath);

                string content = ReadResourceString("Functions.host.json");
                File.WriteAllText(Path.Combine(rootPath, "host.json"), content);

                // read in the C# function
                string functionPath = Path.Combine(rootPath, "Test-CSharp");
                Directory.CreateDirectory(functionPath);
                content = ReadResourceString("Functions.Test_CSharp.function.json");
                File.WriteAllText(Path.Combine(functionPath, "function.json"), content);
                content = ReadResourceString("Functions.Test_CSharp.run.csx");
                File.WriteAllText(Path.Combine(functionPath, "run.csx"), content);

                // read in the F# function
                functionPath = Path.Combine(rootPath, "Test-FSharp");
                Directory.CreateDirectory(functionPath);
                content = ReadResourceString("Functions.Test_FSharp.function.json");
                File.WriteAllText(Path.Combine(functionPath, "function.json"), content);
                content = ReadResourceString("Functions.Test_FSharp.run.fsx");
                File.WriteAllText(Path.Combine(functionPath, "run.fsx"), content);

                traceWriter.Info("Warm up functions deployed");

                ScriptHostConfiguration config = new ScriptHostConfiguration
                {
                    RootScriptPath = rootPath,
                    FileLoggingMode = FileLoggingMode.Never,
                    RootLogPath = settings.LogPath,
                    TraceWriter = traceWriter,
                    FileWatchingEnabled = false
                };
                config.HostConfig.StorageConnectionString = null;
                config.HostConfig.DashboardConnectionString = null;

                host = ScriptHost.Create(ScriptSettingsManager.Instance, config);
                traceWriter.Info(string.Format("Starting Host (Id={0})", host.ScriptConfig.HostConfig.HostId));

                host.Start();

                var arguments = new Dictionary<string, object>
                {
                    { "input", "{}" }
                };
                host.CallAsync("Test-CSharp", arguments).Wait();
                host.CallAsync("Test-FSharp", arguments).Wait();
                host.Stop();

                traceWriter.Info("Warm up succeeded");
            }
            catch (Exception ex)
            {
                traceWriter.Error(string.Format("Warm up failed: {0}", ex));
            }
            finally
            {
                host?.Dispose();
                traceWriter.Dispose();
            }
        }