Question

So imagine we have TCP server recieving all browser requests. How a cookie generated by some JavaScript function like:

function writeCookie() 
{ 

var the_cookie = "users_resolution="+ screen.width +"x"+ screen.height; 

document.cookie=the_cookie 

location = location.href; 
} 

Will loock if some browser like chrome will come to such server? what will full page requesl look like?

Answer 1

It comes through as part of the HTTP request header (look at the spec or http://en.wikipedia.org/wiki/HTTP_cookie for a quick overview). HTTP just looks like normal payload data as far a TCP is concerned. I would drag out a packet sniffer and capture some traffic.