套接字:向多个客户端发送消息

while (true) {
    listen(sock, 1000);
    newsock = accept(sock, (struct sockaddr *) &cli_addr, &clilen);
    n = read(newsock, buffer, read_len);
    if (n < 0) {
        cout << "ERROR reading from the socket" << endl;
        continue; 
    }
    memcpy(data + (msg_count * tuple_size), buffer, tuple_size);
    n = write(newsock, "done\n", 5); //sending the message to the current client
    msg_count++;
    if (msg_count >= batch_size) {
        msg_count = 0;
        doSomethingWithTheData(data);
        //I want to send the message to all the clients here
    }
    bzero(buffer, read_len);
}