message: Draining is also a closing state.
diff: @@ -396,7 +396,7 @@ impl Http3Connection {
  self.state = Http3State::Connected;
  Ok(true)
  }
  - State::Closing { error, .. } => {
  + State::Closing { error, .. } | State::Draining { error, .. } => {
  if matches!(self.state, Http3State::Closing(_)| Http3State::Closed(_)) {
  Ok(false)
  } else {
  