Added callback to catch an error happening on the socket connection

[ElegantCrab]

I was having a problem where, whenever I physically disconnected the device connected through the modbus protocol, I'd see an exception on the console but all subsequent petitions I had on a timer never returned thus never received any actual errors on my code and I couldn't recreate the connection.

This solves the issue by adding a callback right where the error is thrown so the user knows it happened and act accordingly.

[hasanuc20]

whenever i close my app. disconnects from my device. I can't connect to the device again. I guess because the query was interrupted. solution please.