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Now you know a tremendous amount about the Internet. You know that when you type
a URL into a browser, the following steps occur:
- The browser breaks the URL into
three parts:
- The protocol
("http")
- The server
name ("www.mysite.com")
- The file
name ("web-server.htm")
- The browser communicates
with a name server to
translate the server name, "www.mysite.com," into an IP
address, which it uses to connect to that server machine.
- The browser then forms a connection
to the Web server at that IP address on port 80.
- Following the
HTTP protocol, the browser sends a GET request to the
server, asking for
the file "http://www.mysite.com/web-server.htm." (Note
that cookies may be sent from browser to server
with the GET request.)
- The server sends
the HTML text for
the Web page to the browser. (Cookies may also be sent
from server to browser in the header for the page.)
- The browser reads
the HTML tags and
formats the page onto your screen.
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