Cookie Testing
What is Cookies?
Cookie is the type of record stored in the file on user’s
drive by web servers. This record is later used to retrieve information by web
browser from the related machine so that requested command can escape from the
post back otherwise all small commands
will consume time to fetch data from server on each and all request. Offenly
cookie holds personal user data or personal information that is used to
communicate between two or more different-2 web pages.
Process of Two Stages:
Cookies contain two-stage process. In First stage cookie
stores in the user's computer without user’s knowledge or consent. i.e. Web
search engines like Google!, a user can select categories of interest from the
available Web page. That Web server then creates a exact cookie, which is necessary
to tagged string of text containing the user's choice, and it transmits specific
cookie to the user's PC. The user's Web browser receives the cookie and stores
it in a special text file, which is called cookie list. All This happens
without any user consent or notification. As a result, Web server formatted the
personal information (when user's category preferences), saved by user's
PC and transmitted.
During Second Stage, the cookie is automatically and clandestinely
relocated from the machine or user to a Web server. Whenever users browse their
Web browser to open a certain Web page from any server, the browser will,
without the user's permission or knowledge transmitted the cookie containing private
record to the Web server.
Why Cookies should use?
Cookies can be used to identity and track the user
navigation throughout the web site pages. It’s the stateless communication
between web browser and web server.
i.e. if you are browsing
the domain https://www.mydomain.com/123.html
then web browser will send the query to webexample.com
server for the page 123.html. Next time when you just type page http://www.mydomain.com/342.html
then new request is send to webexample.com web server for sending 342.html page
and web server don’t know anything about to whom the previous page 123.html
served.
Let’s check previous history of same user communication
with web server
We need to maintain the interaction and user state between
web server and web browser. Here cookie comes into picture. Cookies will serve
the use of maintaining the user communication with web server.
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How cookies work?
To maintain the cookies web used the
HTTP protocol to exchange information files on the web. Two types of HTTP
protocol are Stateful HTTP protocol and Stateless HTTP. Stateless HTTP
protocol never keep any record for previously browsed web page history. While
State full HTTP protocol always keep history of previous accessed and web
server communication and only this protocol is used by cookies to maintain the
user communication.
An Example code that is used to develop
the cookie and used inside any HTML page:
Set-Cookie:
NAME=VALUE;
expires=DATE;
path=PATH;
domain=DOMAIN_NAME;
Whenever user will visit the required
web page or domain, then later this cookie will be read from disk and then used
to recognize the next visit of the same user on same web page. Expiration time will
also be set while developing the cookie. This time will be decided by the web application
that will use the cookie.
Generally user machine required two types of cookies:
1. Session
cookies: This cookie works along with the session is live in active
browser as soon as browser will be closed, session cookies will be deleted
automatically. Session timing can be set by developer as per required. Session
cookies are like temporary cookies.
2. Persistent cookies: Or permanent cookies
that are worked permanently on user PC and remained continue for the years or
months.
The place of cookies gets stored
Cookies generally get saved in a text file on user’s hard
disk drive. The path of cookies storage is only depends on the browser. Browsers
have different place to store cookie in different paths.
For Example- Internet
explorer path for cookies “C:\Documents and Settings\Default User\Cookies”
“Default User” mean
the current user who logged in as i.e. “Administrator”, or user name like “John”
etc.
By navigating the browser options, cookies path can be found.
Mozilla Firefox browser cookies can be found here:
Browser the Mozilla browser
Click on Tools->Options->Privacy and then “Show
cookies” button.
How cookies store?
Good example of cookies written on Mozilla Firefox browser
by rediff.com:
When you browse the rediff.com on Mozilla Firefox browser or
login into rediff.com mail account, then cookie will get stored on PC Hard
disk. To see this cookie just click on “Show cookies” button mentioned on provided
path above. You Just Need to Click on Rediff.com site which is coming in this
cookie list. You can see different-2 cookies stored by rediff.com domain with
different-2 names.
Site: Rediff.com Cookie name: RMID
Cookie Name: RMID (Name of the cookie)
Content: 1d11c8ws23er49e0… (Encrypted Type content)
Domain: rediff.com
Path of cookie: / (Any path after the domain name)
Send For: All types of connections
Expires: Friday, Feb 29, 2021 12:58:58 AM
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