Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel.Web/System/ServiceModel/WebScriptServiceHost.cs

@@ -0,0 +1,49 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel
+{
+    using System.IO;
+    using System.Collections.Generic;
+    using System.ServiceModel.Description;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Configuration;
+    using System.ServiceModel.Web;
+    using System.Net;
+    using System.ServiceModel.Channels;
+
+    class WebScriptServiceHost : ServiceHost
+    {
+        static readonly string WebScriptEndpointKind = "webScriptEndpoint";
+
+        public WebScriptServiceHost(Type serviceType, params Uri[] baseAddresses)
+            :
+            base(serviceType, baseAddresses)
+        {
+        }
+
+        protected override void OnOpening()
+        {
+            WebServiceHost.AddAutomaticWebHttpBindingEndpoints(this, this.ImplementedContracts, 
+                SR2.GetString(SR2.JsonWebScriptServiceHostOneServiceContract, this.ImplementedContracts.Count),
+                SR2.GetString(SR2.JsonWebScriptServiceHostAtLeastOneServiceContract), WebScriptEndpointKind);
+            foreach (ServiceEndpoint endpoint in this.Description.Endpoints)
+            {
+                if (endpoint.Binding != null && endpoint.Binding.CreateBindingElements().Find<WebMessageEncodingBindingElement>() != null)
+                {
+                    if (endpoint.Behaviors.Find<WebHttpBehavior>() == null)
+                    {
+                        ConfigLoader.LoadDefaultEndpointBehaviors(endpoint);
+                        if (endpoint.Behaviors.Find<WebHttpBehavior>() == null)
+                        {
+                            endpoint.Behaviors.Add(new WebScriptEnablingBehavior());
+                        }
+                    }
+                }
+            }
+
+            base.OnOpening();
+        }
+    }
+}