mod dummy;
pub use dummy::{DEFAULT_DUMMY_PACKET_SIZE, DummyFiller};
use bytes::Bytes;
use std::time::Instant;
pub trait BacklogFiller {
fn max_packet_size(&self) -> usize;
fn next_packet(&mut self, now: Instant) -> Option<Bytes>;
fn on_packet_sent(&mut self, seq: u64, len: usize, now: Instant);
}