Using TCP/IP from APL2
Using sockets
each user is located on a
host
each host has its
IP address
ex : 46.55.91.57
An IP address can have aliases ex: "www.xyz.edu"
Each program which uses TCP/IP has an internal number within the host : the
port number
To use TCP/IP we have to create a
session
via a
socket
The direct use of TCP/IP is called
socket programming
TCP/IP is the protocol used by Internet; TCP/IP can also be used outside internet : for your own use, you can choose freely your IP Address.