Method on_frame

Ch04/websocket/examples/unresponsive_client.rs:9–20

(
        &mut self,
        frame: Frame,
    )

}
impl ws::Handler for Client {
    fn on_frame(
        &mut self,
        frame: Frame,
    ) -> Result<Option<Frame>> {
        if frame.opcode() == OpCode::Ping {
            println!(
                "Received a ping, but we are not responding"
            );
        }

        Ok(None)
    }
}

fn main() {