package congestion

Import Path
	github.com/quic-go/quic-go/internal/congestion (on go.dev)

Dependency Relation
	imports 8 packages, and imported by one package



Package-Level Type Names (total 7)


	/* sort by:  |  */
	
		Bandwidth of a connection

		
			func BandwidthFromDelta(bytes protocol.ByteCount, delta time.Duration) Bandwidth
		
			const BitsPerSecond
			const BytesPerSecond


	
		A Clock returns the current time

		
			( Clock) Now() monotime.Time
		
			 DefaultClock
		
			func NewCubic(clock Clock) *Cubic
			func NewCubicSender(clock Clock, rttStats *utils.RTTStats, connStats *utils.ConnectionStats, initialMaxDatagramSize protocol.ByteCount, reno bool, qlogger qlogwriter.Recorder) *cubicSender


	
		Cubic implements the cubic algorithm from TCP

		
			
				CongestionWindowAfterAck computes a new congestion window to use after a received ACK.
				Returns the new congestion window in packets. The new congestion window
				follows a cubic function that depends on the time passed since last
				packet loss.

			
				CongestionWindowAfterPacketLoss computes a new congestion window to use after
				a loss event. Returns the new congestion window in packets. The new
				congestion window is a multiplicative decrease of our current window.

			
				OnApplicationLimited is called on ack arrival when sender is unable to use
				the available congestion window. Resets Cubic state during quiescence.

			
				Reset is called after a timeout to reset the cubic state

			
				SetNumConnections sets the number of emulated connections

		
			func NewCubic(clock Clock) *Cubic


	
		DefaultClock implements the Clock interface using the Go stdlib clock.

		
			
				Now gets the current time

		
			 DefaultClock : Clock


	
		HybridSlowStart implements the TCP hybrid slow start algorithm

		
			
				IsEndOfRound returns true if this ack is the last packet number of our current slow start round.

			
				OnPacketAcked gets invoked after ShouldExitSlowStart, so it's best to end
				the round when the final packet of the burst is received and start it on
				the next incoming ack.

			
				OnPacketSent is called when a packet was sent

			
				Restart the slow start phase

			
				ShouldExitSlowStart should be called on every new ack frame, since a new
				RTT measurement can be made then.
				rtt: the RTT for this ack packet.
				minRTT: is the lowest delay (RTT) we have seen during the session.
				congestionWindow: the congestion window in packets.

			
				StartReceiveRound is called for the start of each receive round (burst) in the slow start phase.

			
				Started returns true if started



	
		A SendAlgorithm performs congestion control

		
			( SendAlgorithm) CanSend(bytesInFlight protocol.ByteCount) bool
			( SendAlgorithm) HasPacingBudget(now monotime.Time) bool
			( SendAlgorithm) MaybeExitSlowStart()
			( SendAlgorithm) OnCongestionEvent(number protocol.PacketNumber, lostBytes protocol.ByteCount, priorInFlight protocol.ByteCount)
			( SendAlgorithm) OnPacketAcked(number protocol.PacketNumber, ackedBytes protocol.ByteCount, priorInFlight protocol.ByteCount, eventTime monotime.Time)
			( SendAlgorithm) OnPacketSent(sentTime monotime.Time, bytesInFlight protocol.ByteCount, packetNumber protocol.PacketNumber, bytes protocol.ByteCount, isRetransmittable bool)
			( SendAlgorithm) OnRetransmissionTimeout(packetsRetransmitted bool)
			( SendAlgorithm) SetMaxDatagramSize(protocol.ByteCount)
			( SendAlgorithm) TimeUntilSend(bytesInFlight protocol.ByteCount) monotime.Time
		
			 SendAlgorithmWithDebugInfos (interface)


	
		A SendAlgorithmWithDebugInfos is a SendAlgorithm that exposes some debug infos

		
			( SendAlgorithmWithDebugInfos) CanSend(bytesInFlight protocol.ByteCount) bool
			( SendAlgorithmWithDebugInfos) GetCongestionWindow() protocol.ByteCount
			( SendAlgorithmWithDebugInfos) HasPacingBudget(now monotime.Time) bool
			( SendAlgorithmWithDebugInfos) InRecovery() bool
			( SendAlgorithmWithDebugInfos) InSlowStart() bool
			( SendAlgorithmWithDebugInfos) MaybeExitSlowStart()
			( SendAlgorithmWithDebugInfos) OnCongestionEvent(number protocol.PacketNumber, lostBytes protocol.ByteCount, priorInFlight protocol.ByteCount)
			( SendAlgorithmWithDebugInfos) OnPacketAcked(number protocol.PacketNumber, ackedBytes protocol.ByteCount, priorInFlight protocol.ByteCount, eventTime monotime.Time)
			( SendAlgorithmWithDebugInfos) OnPacketSent(sentTime monotime.Time, bytesInFlight protocol.ByteCount, packetNumber protocol.PacketNumber, bytes protocol.ByteCount, isRetransmittable bool)
			( SendAlgorithmWithDebugInfos) OnRetransmissionTimeout(packetsRetransmitted bool)
			( SendAlgorithmWithDebugInfos) SetMaxDatagramSize(protocol.ByteCount)
			( SendAlgorithmWithDebugInfos) TimeUntilSend(bytesInFlight protocol.ByteCount) monotime.Time
		
			 SendAlgorithmWithDebugInfos : SendAlgorithm




Package-Level Functions (total 3)


	
		BandwidthFromDelta calculates the bandwidth from a number of bytes and a time delta


	
		NewCubic returns a new Cubic instance


	
		NewCubicSender makes a new cubic sender




Package-Level Constants (total 2)


	
		BitsPerSecond is 1 bit per second


	
		BytesPerSecond is 1 byte per second