Enum TransportEvent 

pub enum TransportEvent {
    Frame(String),
    Ping(Vec<u8>),
    Pong(Vec<u8>),
}

One thing read off a transport: a complete OCPP-J text frame, or a protocol-level keepalive event. Carrying ping/pong through the abstraction (rather than hiding it entirely inside the WebSocket adapter) keeps send_ping/on_ping possible without the generic client knowing anything WebSocket-specific.

Ping/Pong carry the frame’s application data, which RFC 6455 §5.5.2-3 requires a pong to echo back from the ping that triggered it. Client relies on that echo to match a pong to the exact send_ping waiting for it, so transport implementations must pass the payload through rather than discarding it.

Variants

Frame(String)

Ping(Vec<u8>)

Pong(Vec<u8>)

Trait Implementations

impl Debug for TransportEvent

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

Formats the value using the given formatter.