JavascriptCallbackMessageInspector.cs source code in C# .NET

                        
Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Dispatcher / JavascriptCallbackMessageInspector.cs / 1305376 / JavascriptCallbackMessageInspector.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
#pragma warning disable 1634, 1691
namespace System.ServiceModel.Dispatcher 
{
    using System.Net; 
    using System.Linq; 
    using System.ServiceModel;
    using System.ServiceModel.Channels; 
    using System.ServiceModel.Web;
    using System.Web;
    using System.ServiceModel.Description;
    using System.Diagnostics; 
    using System.ServiceModel.Diagnostics;
 
    class JavascriptCallbackMessageInspector : IDispatchMessageInspector 
    {
        internal static readonly string applicationJavaScriptMediaType = "application/x-javascript"; 

        public JavascriptCallbackMessageInspector(string callbackParameterName)
        {
            this.CallbackParameterName = callbackParameterName; 
            if (DiagnosticUtility.ShouldTraceInformation)
            { 
                TraceUtility.TraceEvent(TraceEventType.Information, TraceCode.JsonpCallbackNameSet, SR2.GetString(SR2.TraceCodeJsonpCallbackNameSet, callbackParameterName)); 
            }
        } 

        string CallbackParameterName { get; set; }

        public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext) 
        {
            if (HttpContext.Current != null && 
                HttpContext.Current.User != null && 
                HttpContext.Current.User.Identity != null &&
                HttpContext.Current.User.Identity.IsAuthenticated) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR2.CrossDomainJavascriptAuthNotSupported));
            }
            return null; 
        }
 
        public void BeforeSendReply(ref Message reply, object correlationState) 
        {
            WebBodyFormatMessageProperty formatProperty; 
            JavascriptCallbackResponseMessageProperty javascriptCallbackResponseMessageProperty = null;
            if (reply.Properties.TryGetValue(WebBodyFormatMessageProperty.Name, out formatProperty) &&
                formatProperty != null &&
                formatProperty.Format == WebContentFormat.Json) 
            {
                if (!reply.Properties.TryGetValue(JavascriptCallbackResponseMessageProperty.Name, out javascriptCallbackResponseMessageProperty) 
                    || javascriptCallbackResponseMessageProperty == null) 
                {
                    javascriptCallbackResponseMessageProperty = WebHttpBehavior.TrySetupJavascriptCallback(this.CallbackParameterName); 
                    if (javascriptCallbackResponseMessageProperty != null)
                    {
                        reply.Properties.Add(JavascriptCallbackResponseMessageProperty.Name, javascriptCallbackResponseMessageProperty);
                    } 
                }
                if (javascriptCallbackResponseMessageProperty != null) 
                { 
                    HttpResponseMessageProperty property;
                    if (reply.Properties.TryGetValue(HttpResponseMessageProperty.Name, out property) && 
                        property != null)
                    {
                        property.Headers[HttpResponseHeader.ContentType] = applicationJavaScriptMediaType;
                        if (javascriptCallbackResponseMessageProperty.StatusCode == null) 
                        {
                            javascriptCallbackResponseMessageProperty.StatusCode = property.StatusCode; 
                        } 
                        property.StatusCode = HttpStatusCode.OK;
 
                        if (property.SuppressEntityBody)
                        {
                            property.SuppressEntityBody = false;
                            Message nullJsonMessage = WebOperationContext.Current.CreateJsonResponse