Client Implementation

To communicate with a server, a client must specify:

A protocol
A machine address
A port number

Use the IO::Socket module:

Documented as perlipc
IPC is interprocess communication:
- Signals, fifos, pipes, safe subprocesses, sockets, and semaphores

Example of connecting a client to a time server:

use IO::Socket;
$remote = IO::Socket::INET->new(
   Proto    => "tcp",
   PeerAddr => "www.timeserver.com",
   PeerPort => "13",
)
   or die "cannot connect to daytime port";
while ( <$remote> ) { print }

PeerAddr identifies the server.
It can be an IP address (e.g. 128.34.52.4) or a hostname (e.g. www.keller.com).