How do I check for a network connection? <= https://stackoverflow.com/questions/520347/how-do-i-check-for-a-network-connection
<= https://www.codeproject.com/Articles/64975/Detect-Internet-Network-Availability
<= https://social.msdn.microsoft.com/Forums/vstudio/en-US/2be9fb43-54c5-4d30-a53a-274f678d1e15/network-connection-detection-c
END