Cookies added by a managed HttpModule aren't available to native IHttpModules or IHttpHandlers

This article helps you resolve the problem where cookies that are added by a managed isn't available to native IHttpModules or IHttpHandlers.

Original product version:   Internet Information Services
Original KB number:   2666571


When using the Cookies collection from either the managed HttpRequest or HttpResponse objects to add a cookie, the cookie doesn't show up in the native IHttpRequest object.


The Cookies collection in the managed HttpRequest and HttpResponse objects don't have a corresponding collection in the IHttpRequest or IHttpResponse object in Internet Information Services (IIS). So adding or modifying either of these collections doesn't modify the Cookie header in the IHttpRequest object.


To modify a specific cookie in the Cookie header of the native IHttpRequest object from managed code, modify the Cookie header directly in the managed HttpRequest object's Header collection, instead of via the Cookies collection.

More information

The following sample means managed HttpModule code would add the cookie to the headers in the IHttpRequest object in the IIS pipeline.

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;

namespace AddCookieModule
    public class AddCookieClass : IHttpModule
        private void Application_BeginRequest(Object source EventArgs e)
            HttpApplication application = (HttpApplication)source;
            HttpContext context = application.Context;
            HttpCookie testCookie = new HttpCookie("testCookie",
            testCookie.Expires = DateTime.Now.AddYears(5);
                                        "testCookie=" + testCookie.Value);

        public void Dispose()
            // nothing to do.

        public void Init(HttpApplication context)
            context.BeginRequest +=
                (new EventHandler(this.Application_BeginRequest));