nutscan_device_t * nutscan_scan_avahi(long usec_timeout);
The nutscan_scan_avahi() function try to detect NUT service and its associated devcies. It uses the AVAHI library to do so.
You MUST call nutscan_init(3) before using this function.
This function waits up to usec_timeout microseconds before considering an IP address does not respond.
The nutscan_scan_avahi() function returns a pointer to a nutscan_device_t structure containing all found devices or NULL if an error occurs or no device is found.