56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
package ackhandler
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import (
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"sync"
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"time"
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"github.com/quic-go/quic-go/internal/protocol"
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)
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// A Packet is a packet
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type Packet struct {
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PacketNumber protocol.PacketNumber
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Frames []*Frame
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LargestAcked protocol.PacketNumber // InvalidPacketNumber if the packet doesn't contain an ACK
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Length protocol.ByteCount
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EncryptionLevel protocol.EncryptionLevel
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SendTime time.Time
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IsPathMTUProbePacket bool // We don't report the loss of Path MTU probe packets to the congestion controller.
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includedInBytesInFlight bool
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declaredLost bool
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skippedPacket bool
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}
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func (p *Packet) outstanding() bool {
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return !p.declaredLost && !p.skippedPacket && !p.IsPathMTUProbePacket
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}
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var packetPool = sync.Pool{New: func() any { return &Packet{} }}
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func GetPacket() *Packet {
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p := packetPool.Get().(*Packet)
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p.PacketNumber = 0
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p.Frames = nil
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p.LargestAcked = 0
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p.Length = 0
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p.EncryptionLevel = protocol.EncryptionLevel(0)
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p.SendTime = time.Time{}
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p.IsPathMTUProbePacket = false
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p.includedInBytesInFlight = false
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p.declaredLost = false
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p.skippedPacket = false
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return p
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}
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// We currently only return Packets back into the pool when they're acknowledged (not when they're lost).
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// This simplifies the code, and gives the vast majority of the performance benefit we can gain from using the pool.
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func putPacket(p *Packet) {
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for _, f := range p.Frames {
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putFrame(f)
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}
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p.Frames = nil
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packetPool.Put(p)
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}
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