When is a cookie available?

Question

Hi i have a web application where i plant a cookie on my page. Then the user goes to another page, and from that page calls my page from a script, like this:

<script type="text/javascript" src="http://domain.com/page.aspx?id=6" ></script>

But i cant access the cookie when it calls my page, why not? and how to work around it?

Please note that this question is in relation to: Javascript and webshop tracking/affiliate across websites, how to do?

Edit The "other" page is on a entirely different domain. My code is in ASP.NET, but as far as i know its the same for all languages:

Planting the cookie (Default.aspx):

protected void Page_Load(object sender, EventArgs e)
    {
        Response.Cookies["affiliate"].Value = "InnovationPartner";
        Response.Cookies["affiliate"].Expires = DateTime.Now.AddDays(7);
        ...
    }

Retrieving the cookie (after round-trip) (Collect.aspx):

protected void Page_Load(object sender, EventArgs e)
    {
        bool affiliate = Request.Cookies["affiliate"] != null ? true : false;
        ...
    }

You need to be far more specific. What "page" do you mean? What "another page"? Is it same domain or different? Where is the reproduce code? — Your Common Sense, Apr 18 '10 at 09:19
Please see my edit, hopefully thats explains it a bit more detailed — Brian Hvarregaard, Apr 18 '10 at 09:25

score 0 · Accepted Answer · edited May 23 '17 at 12:30

0

Many browsers have options to place limitations on ‘third party cookies’, which is what your cookies are for a request caused by a <script> tag on another site.

In particular for IE's default settings, you will need to provide a P3P policy. See eg. this question.

edited May 23 '17 at 12:30

Community

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answered Apr 18 '10 at 09:30

bobince

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...but i set my cookie on: http://www.mycomain.com/default.aspx -> user clicks a link and is redirected to another page (the webshop) -> When the user has completed order i link back to my domain(the javascript): http://www.mydomain.Collect.aspx And its on mydomain.com i am setting and retrieving cookies, nowhere else. But when i try to retrieve my cookie its not there (return null) – Brian Hvarregaard Apr 18 '10 at 17:15
..what i mean is that, its not a real third pary cookie, when its not used on the domain of the webshop? – Brian Hvarregaard Apr 18 '10 at 17:22
It's a third-party cookie when a resource (script, style, image, iframe) is being fetched from a web page at a hostname that does not match the hostname of the resource. – bobince Apr 18 '10 at 20:11

score 0 · Answer 2 · answered Apr 18 '10 at 09:31

0

when called from the different domain, a P3P signature must be implemented.
Anyway, you must always watch an HTTP log to track the cookies flow

answered Apr 18 '10 at 09:31

Your Common Sense

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When is a cookie available?

2 Answers2