Enum Congestion 

pub enum Congestion {
    Cubic,
    Bbr,
    NewReno,
}

The congestion controller to install.

Deliberately not #[non_exhaustive]. tests/transport_exhaustive.rs compiles as its own crate and matches this enum with no _ arm, which is legal only while the attribute is absent; the attribute would force the wildcard in, and after that a fourth controller compiles green out there with nobody told it is unhandled. What the test can check is that every variant named here is matchable, constructible and installable by a downstream consumer, so adding one is a visible break rather than a silent widening. What no test can check is the other direction: whether quinn has grown a controller this list has never heard of. That stays a reading of quinn’s congestion module whenever the dependency moves.

Variants

Cubic

CUBIC, quinn’s default: loss-based, and the controller most of the internet is running.

Bbr

BBR: rate-based, and the interesting one against an impaired path, because it keeps sending through loss that collapses a loss-based sender.

NewReno

NewReno: the textbook loss-based controller, useful as a slow, predictable baseline.

Implementations

impl Congestion

fn factory(self) -> Arc<dyn ControllerFactory + Send + Sync + 'static>

The factory quinn wants, boxed as the trait object its setter takes.

Each variant carries that controller’s own default configuration. Exposing the individual controller knobs would be a second configuration surface with its own validation, and none of it is serializable.

Trait Implementations

impl Clone for Congestion

fn clone(&self) -> Congestion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Congestion

impl Debug for Congestion

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

Formats the value using the given formatter.

impl Eq for Congestion

impl PartialEq for Congestion

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Congestion