Invocation instructions:
1. run/debug TcpExample2ConnectionCounting.java

2. Windows: ipconfig
     MacOS: ifconfig

3. Windows: telnet  localhost 2317
     MacOS:  nc     localhost 2317

Program responses:

===================================================
run-single:
TcpExample2ConnectionCounting has started and is waiting for a connection.
  help: https://savage.nps.edu/Savage/developers.html#telnet
  Windows ipconfig (or Mac ifconfig) indicates current IPv4_Address (for example local wireless IP address)
  Windows enter (telnet localhost 2317)    or Mac enter (nc localhost 2317)    for loopback operation, or
  Windows enter (telnet IPv4_Address 2317) or Mac enter (nc IPv4_Address 2317) for LAN operation
TcpExample2ConnectionCounting server standing by...
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.153.125, 55424 ))
got another connection, #1
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.153.125, 55425 ))
got another connection, #2
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.153.125, 55426 ))
got another connection, #3
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.153.125, 55427 ))
got another connection, #4
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.153.125, 55428 ))
got another connection, #5
This server response was written by server TcpExamples.TcpExample2ConnectionCounting
Socket pair (server, client): (( /172.20.154.38, 2317 ), ( /172.20.154.38, 49308 ))
got another connection, #6

===================================================
$  telnet localhost 2317

This client response was written by server TcpExamples.TcpExample2ConnectionCounting                                                                                                                               
You were connection #6, by my count                                                                                                                                                                                
                                                                                                                                                                              
Connection to host lost.
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