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Connection Establishment
To fetch a WWW page, the browser application program (or more
correctly, process--see later) running on your
local computer first establishes a connection to
the remote host.
What this means is that the browser process uses the facilities of
the network connecting the two computers to send a "connection
request" message to a server program (process)
running on the computer whose name was given in the URL.
If the remote server process is prepared to accept the connection,
it responds with a "connection accepted" message.
The two process now have an open "communications channel"
between them.
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