Method process_query_answer

net/TcpClient.hpp:300–310

    callback_->receive_message(connection_id, std::move(data));
  }
  void process_query_answer(ConnectionId connection_id, QueryId id, td::BufferSlice data) {
    LOG(DEBUG) << "tcp: processing query answer from " << connection_id;
    auto it = active_connections_.find(connection_id);
    if (it == active_connections_.end()) {
      return;
    }
    auto it2 = out_queries_.find(id);
    if (it2 != out_queries_.end()) {
      td::actor::send_closure(it2->second, &TcpOutboundQuery::answer, std::move(data));
    }
  }
  void process_query_error(ConnectionId connection_id, QueryId id, td::Status error) {
    auto it = active_connections_.find(connection_id);
    if (it == active_connections_.end()) {