forked from quic-go/quic-go
52c3e6e863
All ACK ranges are now saved in the AckRanges slices. This eliminates a bunch of special cases for ACKs that don't report any packets missing.
44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package ackhandler
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import (
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/internal/wire"
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)
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// This stopWaitingManager is not supposed to satisfy the StopWaitingManager interface, which is a remnant of the legacy AckHandler, and should be remove once we drop support for QUIC 33
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type stopWaitingManager struct {
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largestLeastUnackedSent protocol.PacketNumber
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nextLeastUnacked protocol.PacketNumber
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lastStopWaitingFrame *wire.StopWaitingFrame
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}
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func (s *stopWaitingManager) GetStopWaitingFrame(force bool) *wire.StopWaitingFrame {
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if s.nextLeastUnacked <= s.largestLeastUnackedSent {
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if force {
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return s.lastStopWaitingFrame
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}
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return nil
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}
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s.largestLeastUnackedSent = s.nextLeastUnacked
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swf := &wire.StopWaitingFrame{
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LeastUnacked: s.nextLeastUnacked,
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}
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s.lastStopWaitingFrame = swf
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return swf
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}
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func (s *stopWaitingManager) ReceivedAck(ack *wire.AckFrame) {
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largestAcked := ack.LargestAcked()
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if largestAcked >= s.nextLeastUnacked {
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s.nextLeastUnacked = largestAcked + 1
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}
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}
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func (s *stopWaitingManager) QueuedRetransmissionForPacketNumber(p protocol.PacketNumber) {
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if p >= s.nextLeastUnacked {
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s.nextLeastUnacked = p + 1
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}
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}
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