CS 75 Lecture 0: HTTP
root root servers know who the authority is for .com .net bubble up to these very high level root servers and bubble down to the authority who does know When we buy our domain name- tell the world , what the ip address is of your DNS server So someone tell it proacively once when we buy the DOMAIN a.b.c.d Once the ip has been resolved, the computer puts together a message as follows Message Content: { has 3 parts } --------------- GET / HTTP/1.0 Method - { / } The root HTTP/Version Number In reality , there are more HTTP headers that are sent from browser to server You can see those in action in just a bit This message captures really the more important aspect of the request. Our computer creates a Virtual envelope - This envelope has a message like the above Front of that Virtual envelope is an ip address 1.2.3.4 or what ever the googles ip address is In the return field of this virtual envelope, there is a return address - which is your ip address Your computer does...