/// Append a message to a peer's pending outbound/write buffer, and update the map of peers needing sends accordingly.
fn enqueue_message<M: wire::Type + Writeable + Debug>(&self, peer: &mut Peer, message: &M) {
- let mut buffer = VecWriter(Vec::new());
+ let mut buffer = VecWriter(Vec::with_capacity(2048));
wire::write(message, &mut buffer).unwrap(); // crash if the write failed
let encoded_message = buffer.0;