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properly increase LargestInOrderAcked past retransmitted packets

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This commit is contained in:
Lucas Clemente
2016-08-05 15:02:02 +02:00
parent 46e8d26680
commit 3b5d10b1f2
2 changed files with 30 additions and 6 deletions
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11
ackhandler/sent_packet_handler.go
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@@ -108,15 +108,14 @@ func (h *sentPacketHandler) queuePacketForRetransmission(packet *ackhandlerlegac
h.retransmissionQueue = append(h.retransmissionQueue, packet)
packet.Retransmitted = true
// increase the LargestInOrderAcked, if this is the lowest packet that hasn't been acked yet
// If this is the lowest packet that hasn't been acked or retransmitted yet ...
if packet.PacketNumber == h.LargestInOrderAcked+1 {
for i := packet.PacketNumber + 1; i < h.LargestAcked; i++ {
_, ok := h.packetHistory[protocol.PacketNumber(i)]
if !ok {
h.LargestInOrderAcked = i
} else {
// ... increase the LargestInOrderAcked until it's one before the next packet that was not acked and not retransmitted
for h.LargestInOrderAcked < h.LargestAcked {
if p, notAcked := h.packetHistory[h.LargestInOrderAcked+1]; notAcked && !p.Retransmitted {
break
}
h.LargestInOrderAcked++
}
}