Review WX protocol implmentation

[PropGit]

I'm concerned that the last setTimeout() in discoverWirelessPorts() is allowing for a bug; perhaps the sometimes-disappearing WiFi Module behavior. Review this code and debug well to determine if and why that setTimeout() is needed.

[PropGit]

Also, consider the case where the last response packet arrives after AllowWX is unchecked... does disc_packet get reset properly upon the start of the next discover operation?