blob: 66bdf3cbc06a4fdf4044eea4a07fa586e8449c24 [file] [log] [blame]
// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build go1.21
package quic
import (
// An unscaledAckDelay is an ACK Delay field value from an ACK packet,
// without the ack_delay_exponent scaling applied.
type unscaledAckDelay int64
func unscaledAckDelayFromDuration(d time.Duration, ackDelayExponent uint8) unscaledAckDelay {
return unscaledAckDelay(d.Microseconds() >> ackDelayExponent)
func (d unscaledAckDelay) Duration(ackDelayExponent uint8) time.Duration {
if int64(d) > (math.MaxInt64>>ackDelayExponent)/int64(time.Microsecond) {
// If scaling the delay would overflow, ignore the delay.
return 0
return time.Duration(d<<ackDelayExponent) * time.Microsecond