Struct ClientLeg 

struct ClientLeg {
    listener: Option<Arc<Listener>>,
    transport: Option<Arc<TransportConfig>>,
}

The client-facing leg’s two mutable facts, under one lock.

Fields

listener: Option<Arc<Listener>>

The listener, from the moment run() binds it until run() returns.

transport: Option<Arc<TransportConfig>>

The transport parameters a live request installed, kept so that a request that arrives before the bind is not lost.