Enum CongestionControl 

pub enum CongestionControl {
    Bbr,
    Cubic,
    NewReno,
}

QUIC congestion controller, selected by [limits].congestion_control.

The default is BBR, deliberately. This proxy exists to carry traffic over long, often lossy international paths, and a loss-based controller reads the non-congestive packet loss of those paths as congestion and keeps the window from ever opening — the download direction collapses to near-zero. BBR models bottleneck bandwidth and RTT instead of reacting to loss, so it holds throughput where CUBIC and NewReno stall, matching what the Linux kernel does for TCP with net.ipv4.tcp_congestion_control = bbr.

The loss-based controllers are kept as an escape hatch: quinn’s BBR is a port marked “experimental”, so an operator who hits trouble after a dependency bump can fall back without recompiling.

Variants

Bbr

BBR (quinn’s experimental port of BBRv1). The default; best on lossy long-haul paths.

Cubic

CUBIC, quinn’s own default. Loss-based; the standard choice on clean paths.

NewReno

NewReno. Loss-based and the most conservative; mainly of interest for interop testing.

Trait Implementations

impl Clone for CongestionControl

fn clone(&self) -> CongestionControl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CongestionControl

impl Debug for CongestionControl

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CongestionControl

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for CongestionControl

impl PartialEq for CongestionControl

fn eq(&self, other: &CongestionControl) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for CongestionControl