ntp

const (
	// MinAllowablePoll is the minimum time allowed for a client to query a time server.
	MinAllowablePoll = 32 * time.Second
	// MaxAllowablePoll is the maximum allowed interval for querying a time server.
	MaxAllowablePoll = 2048 * time.Second
	// RetryPoll is the interval between retries if the error is not Kiss-o-Death.
	RetryPoll = time.Second
	// AdjustTimeLimit is a maximum time drift to compensate via adjtimex().
	//
	// Deltas smaller than AdjustTimeLimit are gradually adjusted (slewed) to approach the network time.
	// Deltas larger than AdjustTimeLimit are set by letting the system time jump.
	AdjustTimeLimit = 400 * time.Millisecond
	// EpochLimit is a minimum time difference to signal that change as epoch change.
	EpochLimit = 15 * time.Minute
	// ExpectedAccuracy is the expected time sync accuracy, used to adjust poll interval.
	ExpectedAccuracy = 200 * time.Millisecond
	// NTSBootstrapAttempts is the number of initial NTS session establishment attempts
	// during which a TLS certificate validity-period (time) failure is tolerated by
	// falling back to a verifier which validates the chain and hostname but ignores
	// the certificate notBefore/notAfter.
	//
	// This works around the boot-time chicken-and-egg problem: NTS key exchange runs
	// over TLS, but the system clock used to validate the certificate may not be set
	// yet. After this many attempts (or once time has been synced), certificate
	// validation is always strict.
	NTSBootstrapAttempts = 5
)