DESCRIPTION
The Network UPS Tools (NUT) nutscan library provides the same discovery related features that are also offered by nut-scanner(8).
It allows to discover supported NUT devices (USB, SNMP, Eaton XML/HTTP and IPMI) and NUT servers (using Avahi or the classic connection method).
DISCOVERY FUNCTIONS
First, include the needed header file:
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#include <nut-scan.h>
Then, to discover new devices, use the appropriate function:
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nutscan_scan_usb(3) for supported USB devices,
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nutscan_scan_snmp(3) for supported SNMP agents,
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nutscan_scan_xml_http(3) for Eaton Network Management Card,
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nutscan_scan_nut(3) for NUT servers (upsd), using the classic method,
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nutscan_scan_avahi(3) for NUT servers (upsd), using the mDNS (Avahi) method,
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nutscan_scan_ipmi(3) for supported IPMI PSU.
All these functions return a list of devices found, using the nutscan_device_t structure. This one is described in nutscan_add_device_to_device(3).
Helper functions are also provided to output data using standard format:
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nutscan_display_parsable(3) for parsable output,
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nutscan_display_ups_conf(3) for ups.conf style.
ERROR HANDLING
There is currently no specific mechanism around error handling.