types

const (
	// Uncalibrated local clock.
	ExternalReferenceSourceLocal ExternalReferenceSourceCode = "LOCL"
	// Calibrated Cesium clock.
	ExternalReferenceSourceCesium ExternalReferenceSourceCode = "CESM"
	// Calibrated Rubidium clock.
	ExternalReferenceSourceRubidium ExternalReferenceSourceCode = "RBDM"
	// Calibrated quartz clock or other pulse-per-second source.
	ExternalReferenceSourcePulsePerSecond ExternalReferenceSourceCode = "PPS"
	// Inter-Range Instrumentation Group.
	ExternalReferenceSourceIRIG ExternalReferenceSourceCode = "IRIG"
	// NIST telephone modem service.
	ExternalReferenceSourceACTS ExternalReferenceSourceCode = "ACTS"
	// USNO telephone modem service.
	ExternalReferenceSourceUSNO ExternalReferenceSourceCode = "USNO"
	// PTB (Germany) telephone modem service.
	ExternalReferenceSourcePTB ExternalReferenceSourceCode = "PTB"
	// Allouis (France) Radio 164 kHz.
	ExternalReferenceSourceTDF ExternalReferenceSourceCode = "TDF"
	// Mainflingen (Germany) Radio 77.5 kHz.
	ExternalReferenceSourceDCF ExternalReferenceSourceCode = "DCF"
	// Rugby (UK) Radio 60 kHz.
	ExternalReferenceSourceMSF ExternalReferenceSourceCode = "MSF"
	// Ft. Collins (US) Radio 2.5, 5, 10, 15, 20 MHz.
	ExternalReferenceSourceWWV ExternalReferenceSourceCode = "WWV"
	// Boulder (US) Radio 60 kHz.
	ExternalReferenceSourceWWVB ExternalReferenceSourceCode = "WWVB"
	// Kauai Hawaii (US) Radio 2.5, 5, 10, 15 MHz.
	ExternalReferenceSourceWWVH ExternalReferenceSourceCode = "WWVH"
	// Ottawa (Canada) Radio 3330, 7335, 14670 kHz.
	ExternalReferenceSourceCHU ExternalReferenceSourceCode = "CHU"
	// LORAN-C radionavigation system.
	ExternalReferenceSourceLORAN ExternalReferenceSourceCode = "LORC"
	// OMEGA radionavigation system.
	ExternalReferenceSourceOMEGA ExternalReferenceSourceCode = "OMEG"
	// Global Positioning Service.
	ExternalReferenceSourceGPS ExternalReferenceSourceCode = "GPS"
)

const (
	// The association belongs to an anycast server.
	KissOfDeathCodeAssocitation KissOfDeathCode = "ACST"
	// Server authentication failed.
	KissOfDeathCodeAuthentication KissOfDeathCode = "AUTH"
	// Autokey sequence failed.
	KissOfDeathCodeAutokey KissOfDeathCode = "AUTO"
	// The association belongs to a broadcast server.
	KissOfDeathCodeBroadcast KissOfDeathCode = "BCST"
	// Cryptographic authentication or identification failed.
	KissOfDeathCodeCryptographic KissOfDeathCode = "CRYP"
	// Access denied by remote server.
	KissOfDeathCodeDeny KissOfDeathCode = "DENY"
	// Lost peer in symmetric mode.
	KissOfDeathCodeLostPeer KissOfDeathCode = "DROP"
	// Access denied due to local policy.
	KissOfDeathCodeLocalPolicy KissOfDeathCode = "RSTR"
	// The association has not yet synchronized for the first time.
	KissOfDeathCodeNotSynchronized KissOfDeathCode = "INIT"
	// The association belongs to a manycast server.
	KissOfDeathCodeManycast KissOfDeathCode = "MCST"
	// No key found. Either the key was never installed or is not trusted.
	KissOfDeathCodeNoKeyFound KissOfDeathCode = "NKEY"
	// Rate exceeded. The server has temporarily denied access because the client exceeded the rate threshold.
	KissOfDeathCodeRateExceeded KissOfDeathCode = "RATE"
	// Somebody is tinkering with the association from a remote host running ntpdc.
	KissOfDeathCodeRemote KissOfDeathCode = "RMOT"
	// A step change in system time has occurred, but the association has not yet resynchronized.
	KissOfDeathCodeStepNotSynchronized KissOfDeathCode = "STEP"
)

const (
	// No leap second adjustment is required.
	LeapIndicatorNoAdjustment LeapIndicator = 0
	// Last minute of the day has 61 seconds.
	LeapIndicatorAddSecond LeapIndicator = 1
	// Last minute of the day has 59 seconds.
	LeapIndicatorSubtractSecond LeapIndicator = 2
	// Leap second state is unknown.
	LeapIndicatorAlarmCondition LeapIndicator = 3
)

const (
	// Reserved mode.
	ModeReserved Mode = 0
	// Symmetric active.
	ModeSymmetricActive Mode = 1
	// Symmetric passive.
	ModeSymmetricPassive Mode = 2
	// Client mode.
	ModeClient Mode = 3
	// Server mode.
	ModeServer Mode = 4
	// Broadcast mode.
	ModeBroadcast Mode = 5
	// NTP control message.
	ModeControlMessage Mode = 6
	// Private use.
	ModePrivate Mode = 7
)

const (
	// Minimum poll interval (16 seconds).
	PollIntervalMinimum PollInterval = 4
	// Default poll interval (64 seconds).
	PollIntervalDefault PollInterval = 6
	// Maximum poll interval (1024 seconds).
	PollIntervalMaximum PollInterval = 10
)

const (
	// Clock precision is 1 second.
	PrecisionOneSecond PrecisionLevel = 0
	// Clock precision is 1 millisecond.
	PrecisionOneMillisecond PrecisionLevel = -10
	// Clock precision is 1 microsecond.
	PrecisionOneMicrosecond PrecisionLevel = -20
	// Clock precision is 1 nanosecond.
	PrecisionOneNanosecond PrecisionLevel = -30
)

const (
	// Unspecified or invalid stratum level.
	StratumUnspecified StratumLevel = 0
	// Primary reference (e.g., GPS).
	StratumPrimary StratumLevel = 1
	// Secondary reference (via NTP, using another server).
	StratumSecondary StratumLevel = 2
	// Tertiary and beyond.
	StratumTertiary StratumLevel = 3
	// Reserved for future use or custom definitions.
	StratumReserved StratumLevel = 255
)

const (
	// Version 1.
	Version1 Version = 1
	// Version 2.
	Version2 Version = 2
	// Version 3.
	Version3 Version = 3
	// Version 4 (current).
	Version4 Version = 4
)