use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/lucas-clemente/quic-go/internal/ackhandler/interfaces.go

@@ -0,0 +1,47 @@
+package ackhandler
+
+import (
+	"time"
+
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+	"github.com/lucas-clemente/quic-go/internal/wire"
+)
+
+// SentPacketHandler handles ACKs received for outgoing packets
+type SentPacketHandler interface {
+	// SentPacket may modify the packet
+	SentPacket(packet *Packet)
+	SentPacketsAsRetransmission(packets []*Packet, retransmissionOf protocol.PacketNumber)
+	ReceivedAck(ackFrame *wire.AckFrame, withPacketNumber protocol.PacketNumber, encLevel protocol.EncryptionLevel, recvTime time.Time) error
+	SetHandshakeComplete()
+
+	// The SendMode determines if and what kind of packets can be sent.
+	SendMode() SendMode
+	// TimeUntilSend is the time when the next packet should be sent.
+	// It is used for pacing packets.
+	TimeUntilSend() time.Time
+	// ShouldSendNumPackets returns the number of packets that should be sent immediately.
+	// It always returns a number greater or equal than 1.
+	// A number greater than 1 is returned when the pacing delay is smaller than the minimum pacing delay.
+	// Note that the number of packets is only calculated based on the pacing algorithm.
+	// Before sending any packet, SendingAllowed() must be called to learn if we can actually send it.
+	ShouldSendNumPackets() int
+
+	GetStopWaitingFrame(force bool) *wire.StopWaitingFrame
+	GetLowestPacketNotConfirmedAcked() protocol.PacketNumber
+	DequeuePacketForRetransmission() *Packet
+	DequeueProbePacket() (*Packet, error)
+	GetPacketNumberLen(protocol.PacketNumber) protocol.PacketNumberLen
+
+	GetAlarmTimeout() time.Time
+	OnAlarm() error
+}
+
+// ReceivedPacketHandler handles ACKs needed to send for incoming packets
+type ReceivedPacketHandler interface {
+	ReceivedPacket(packetNumber protocol.PacketNumber, rcvTime time.Time, shouldInstigateAck bool) error
+	IgnoreBelow(protocol.PacketNumber)
+
+	GetAlarmTimeout() time.Time
+	GetAckFrame() *wire.AckFrame
+}