HTTP/1.1 Headers

I tried to read Hypertext Transfer Protocol -- HTTP/1.1, especially, request and response header attributes. I am attaching two headers with my comments on attributes for both request and response headers. It was interesting to look at http://en.wikipedia.org/wiki/HTTP_cookie and see how cookies are handled.

Code links

NetA2008\HTTP Headers\request_www_google_com.txt

NetA2008\HTTP Headers\response_www_google_com.txt

Listings

^ NetA2008\HTTP Headers\request_www_google_com.txt

HTTP/1.1 Request Header
	Host: www.google.com
	User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12
## Here user-agent is Mozilla (browser) which is originating the request to the server. By knowing this server may leave things
## which won't make sense to the browser. 
	Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,
		text/plain;q=0.8,
		image/png,*/*;q=0.5
## The requster prefers texts and applications of extensions xml, xhtml and html. 
## It will accept text/html with 10% in mark-down quality.
## If not possible will accept text/plain with 20% in mark-down quality.
## The requster also prefers image/png. 
## And if nothing mentioned above is not available, it will accept anything with 50% in mark-down quality.
	Accept-Language: en-us,en;q=0.5
## The requester prefers US english, but it will also accept english of anytype.	
	Accept-Encoding: gzip,deflate
## The requester will accept only content encoding of gzip and deflate.
	Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
## The requester wants charachter set of ISO-8859-1 with quality 1 and utf-8 with 20% down in quality. Otherwise,
## anything with 30% mark-down in quality will be accepted.
	Keep-Alive: 300	
	Connection: keep-alive
## The requester wants server to hold the connection for 300msec after response.	
	Cookie: PREF=ID=84e3df1d485fc17d:TM=1203853428:LM=1203853428:S=0u6pjiw2HiJmf_Rd
## Google stores PREF in cookie to know user preferences.Reference 
http://en.wikipedia.org/wiki/HTTP_cookie. 

^ NetA2008\HTTP Headers\response_www_google_com.txt

HTTP/1.1 Response Header

	HTTP/1.1 200 OK
	Cache-Control: private
	Content-Type: text/html; charset=UTF-8
## The server responded with content text/html 	and character-set UTF-8.
	Content-Encoding: gzip
	Server: gws
## Google used gws software for giving the response.
## gws stands for Google Web Server.
	Content-Length: 2382
	Date: Sun, 24 Feb 2008 12:11:35 GMT