application HTTP

HTTP

What happens when I go to google.com home page?

What do I need to send a request packet?

What is an address?

How do I get google's address?

How do I get DNS's address?

How do I get DHCP's address?

How do I get my address?

What if I have more than one window or tab to the same google.com?

client side

• can I cache a page?

• how do I know if newer update is available? conditional-get

• the "refresh" button, do I need to get the same page again and again?

• how does amazon know it is me again? cookies

• shopping cart, how does it work?

server side

• how many languages do I want to support?

• how do I know which language to send in response?

• how do I know if you're a mobile or what?

• do I care about the size of client's display?

  • proxy server ,,, web caches for enterprise

connection, connection, connection

• • persistent, non persistent HTTP, why?

  • pipeline, no pipeline

  • parallel, no parallel

  • how many connections in a typical http session?

wireshark exercise