gr1ffon/quic-go
1
0
Fork 0
forked from quic-go/quic-go
Code Pull Requests Activity

OutgoingPacketAckHandler queues packets for retransmission

Browse Source
This commit is contained in:
Marten Seemann
2016-04-24 20:28:37 +07:00
parent 76d4b7a931
commit 7467e7ebff
2 changed files with 38 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
ackhandler/outgoing_packet_ack_handler.go
View File

@@ -9,8 +9,9 @@ import (
)
var (
errEntropy = errors.New("OutgoingPacketAckHandler: Wrong entropy")
errMapAccess = errors.New("OutgoingPacketAckHandler: Packet does not exist in PacketHistory")
errEntropy = errors.New("OutgoingPacketAckHandler: Wrong entropy")
errMapAccess = errors.New("OutgoingPacketAckHandler: Packet does not exist in PacketHistory")
retransmissionThreshold = uint8(1) // ToDo: use 3 as recommended in the RFC here
)
type outgoingPacketAckHandler struct {
@@ -20,6 +21,7 @@ type outgoingPacketAckHandler struct {
LargestObserved protocol.PacketNumber
packetHistory map[protocol.PacketNumber]*Packet
packetHistoryMutex sync.Mutex
retransmissionQueue []*Packet // ToDo: use better data structure
}
// NewOutgoingPacketAckHandler creates a new outgoingPacketAckHandler
@@ -164,7 +166,12 @@ func (h *outgoingPacketAckHandler) ReceivedAck(ackFrame *frames.AckFrame) error
return errMapAccess
}
packet.MissingReports++
// ToDo: do something as when packet.MissionReports > threshold
// send out the packet again when it has been NACK more than retransmissionThreshold times
if packet.MissingReports > retransmissionThreshold {
fmt.Printf("Should retransmit packet %d\n", packet.PacketNumber)
h.retransmissionQueue = append(h.retransmissionQueue, packet)
// ToDo: delete the packet from the history, as if it had been acked
}
}
// ToDo: delete packet from history, since it already has been ACKed
}