[ACCEPTED]-Can One Domain Have Multiple Cookies?-cookies
I would speculate that the cookies 10 were created by separate components of the 9 website, which were created by separate 8 teams of developers. We, of all people, should 7 realize that this is often the case when 6 we need to get some development done but 5 do not have time to wait for collaboration 4 or for another team to develop a necessary 3 layer for us.
Relevant count 2 of maximum stored cookies per domain for 1 the major browsers are:
- Firefox 3.0: 50
- Opera 9: 30
- Internet Explorer 7: 50
Can one domain generate multiple cookies 8 on visitor's web browser?
Yes. The exact 7 limit depends on the browser, Internet Explorer used to accept 20 but increased this to 50.
If so, when 6 user vists the website, which cookies will 5 be delivered to server?
All of them
And why 4 would a website generate multiple cookies?
So 3 that you don't need to serialise all the 2 data (which could be from unrelated parts 1 of the system) in one cookie.
A cookie is just a single key/value pair, with 3 optional domain, path, expiration and access 2 settings.
Reasons to separate data into separate 1 cookies include:
- Easier to maintain code - various bits of the site that need to store state don't need to interoperate with each other to pack it all into one cookie.
- Easier user management - the end user (you) can see more easily what is stored, and can selectively delete certain cookies.
- Different usages - for example, a cookie holding your session key can be marked
- Reduce request size - if some cookies are only used for certain pages, the
pathproperty can be used so they aren't sent unnecessarily for pages they aren't needed on.
A server can specify any number of cookies 12 and each cookie is specified in its own 11
Set-Cookie header contains at least 10 the
CookieName=CookieValue pair, and may contain other
key=value pairs 9 in addition to either a
httpOnly attribute. These 8 additional pairs and attributes are metadata 7 referring to the actual cookie and cannot 6 be used to set additional cookies.
When a 5 client sends cookies back to a server it 4 combines them all into a single
Cookie header. This 3 is possible because the client never sends 2 the metadata back, only the cookie name 1 and value.
Consider this HTTP exchange:
GET / HTTP/1.1 Host: www.example.com HTTP/1.1 302 Found Location: http://www.example.com/index.html Set-Cookie: UserID=12345; Expires=Wed, 09 Jun 2021 10:18:14 GMT; domain=.example.com;path=/index.html; httpOnly` Set-Cookie: SessionID=6478; domain=.example.com;path=/index.html; httpOnly Set-Cookie: foo=bar GET /index.html HTTP/1.1 Host: www.example.com Cookie: UserID=12345; SessionID=6478; foo=bar
When you write a program, do you use just 3 one variable? No, right?
Same principle here 2 - cookies are just key/value pairs that 1 your program (server/client) can use.
Yes, one domain can generate many cookies. The 1 maximum number varies by browser.
-Every site can create any number of cookies 6 it desires. (But it seams this may vary 5 from browser to browser)
-When the user visits 4 the web site all active cookies will be 3 sent.
-It makes sense to have multiple cookies 2 to store separate data. In an extreme comparison 1 compare cookies to classes ;)
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