void onServerClose(QuicServerConnectionState& conn) {
  switch (conn.state) {
    case ServerState::Open:
      onServerCloseOpenState(conn);
      return;
    case ServerState::Closed:
      return;
  }
}
void onServerClose(QuicServerConnectionState& conn) {
  switch (conn.state) {
    case ServerState::Open:
      onServerCloseOpenState(conn);
      return;
    case ServerState::Closed:
      return;
  }
}