Server Side Command Display

When the server is started it enters a "listening" mode where it is waiting to accept connection requests from clients.

When a client connects the server:

• accepts the connection from the client as a new socket
• receives the command from the client
• writes the command to the serial port (ie to the ADR card)
• reads the response from the serial port
• sends the response to the client
• closes the socket created for this connection
• waits to accept the next connection on the listening socket

The server also provides some rudimentary help text.