Method SSL.sslfile()->set_alert_callback()

Method set_alert_callback: void set_alert_callback(function(object:void) alert)
Description: Install a function that will be called when an alert packet is received. It doesn't affect the callback mode - it's called both from backends and from within normal function calls like read and write .
Note: This object is part of a cyclic reference whenever this is set, just like setting any other callback.