谷歌CheckCookie链接做什么？

Question

我找到了一个代码，用于以编程方式登录Google帐户后打开此链接 这个链接的目的是什么？

https://www.google.com/accounts/CheckCookie?chtml=LoginDoneHtml

Answer 1

After Successfully logged in this url gets all old cookiees which stored in browser in request header and verify with server and update it if any changes.

generally this cookie always changed during each request 

 1. __utma,
 2. __utmb,
 3. __utmc,
 4. __utmz.

在firefox中查看更改cookie使用firecookie插件的现场演示。