Class Callback

net/TcpClient.cpp:203–216

  auto listening_socket = std::make_unique<TcpListeningSocket>(listening_socket_id, port, remote_app_type);

  class Callback : public td::TcpListener::Callback {
   private:
    td::actor::ActorId<TcpClientImpl> id_;
    ListeningSocketId listening_socket_id_;

   public:
    Callback(td::actor::ActorId<TcpClientImpl> id, ListeningSocketId listening_socket_id)
        : id_(id), listening_socket_id_(listening_socket_id) {
    }
    void accept(td::SocketFd fd) override {
      td::actor::send_closure(id_, &TcpClientImpl::accepted_tcp_connection, td::BufferedFd<td::SocketFd>(std::move(fd)),
                              listening_socket_id_);
    }
  };

  listening_socket->listener = td::actor::create_actor<td::TcpInfiniteListener>(
      td::actor::ActorOptions().with_name("listener").with_poll(), port,