Struct Bbr

pub struct Bbr { /* private fields */ }

Experimental! Use at your own risk.

Aims for reduced buffer bloat and improved performance over high bandwidth-delay product networks. Based on google’s quiche implementation https://source.chromium.org/chromium/chromium/src/+/master:net/third_party/quiche/src/quic/core/congestion_control/bbr_sender.cc of BBR https://datatracker.ietf.org/doc/html/draft-cardwell-iccrg-bbr-congestion-control. More discussion and links at https://groups.google.com/g/bbr-dev.

Implementations

impl Bbr

pub fn new(config: Arc<BbrConfig>, current_mtu: u16) -> Bbr

Construct a state using the given config and current time now

Trait Implementations

impl Clone for Bbr

fn clone(&self) -> Bbr

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Controller for Bbr

fn on_sent(&mut self, now: Instant, bytes: u64, last_packet_number: u64)

One or more packets were just sent

fn on_ack( &mut self, now: Instant, sent: Instant, bytes: u64, app_limited: bool, rtt: &RttEstimator, )

Packet deliveries were confirmed

fn on_end_acks( &mut self, now: Instant, in_flight: u64, app_limited: bool, largest_packet_num_acked: Option<u64>, )

Packets are acked in batches, all with the same now argument. This indicates one of those batches has completed.

fn on_congestion_event( &mut self, _now: Instant, _sent: Instant, _is_persistent_congestion: bool, lost_bytes: u64, )

Packets were deemed lost or marked congested

fn on_mtu_update(&mut self, new_mtu: u16)

The known MTU for the current network path has been updated

fn window(&self) -> u64

Number of ack-eliciting bytes that may be in flight

fn clone_box(&self) -> Box<dyn Controller>

Duplicate the controller’s state

fn initial_window(&self) -> u64

Initial congestion window

fn into_any(self: Box<Bbr>) -> Box<dyn Any>

Returns Self for use in down-casting to extract implementation details

impl Debug for Bbr

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.