Question

我正在编写一个客户端服务器程序，以使用简单的多人数学游戏开发聊天室。队列中只能侦听5个客户端。 3个客户端连接到服务器后，应创建它以启动游戏。直到连接了3个客户端，服务器才能启动游戏。当第4个客户端和第5个客户端与服务器连接时，他们应转到聊天室。 - - - 我的问题 - - - - 我的服务器无法使用“在3个客户端被接受之后”的条件。我不知道如何证明该条件。我想在3个客户端连接后开始游戏，并且每个客户端都可以在条件满足后才能玩游戏。我尝试了一些代码，请帮助

3个客户端连接后，我进入了聊天室。我把简单的问题称为“样本答案？”只是为了运行代码。

--------这是主要功能下的代码--------

//这是主要代码

int main(int argc, char **argv){
if(argc != 2){
    printf("Usage: %s <port>\n", argv[0]);
    return EXIT_FAILURE;
}

char *ip = "127.0.0.1";
int port = atoi(argv[1]);
//int port2 = 3333;
int option = 1;
int listenfd = 0, connfd = 0; //listenfd2 = 0, connfd2 = 0 ;



if(setsockopt(listenfd, SOL_SOCKET,(SO_REUSEPORT | SO_REUSEADDR), 
     (char*)&option,sizeof(option)) < 0){
       perror("ERROR: setsockopt failed");
          return EXIT_FAILURE;
}

if(bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
     perror("ERROR: Socket binding failed");
        return EXIT_FAILURE;
 }
 struct sockaddr_in serv_addr;
 struct sockaddr_in cli_addr;
 pthread_t tid;
 listenfd = socket(AF_INET, SOCK_STREAM, 0);
 serv_addr.sin_family = AF_INET;
 serv_addr.sin_addr.s_addr = inet_addr(ip);
 serv_addr.sin_port = htons(port);

  /* Ignore pipe signals */
  signal(SIGPIPE, SIG_IGN);

 /* Listen */
  if (listen(listenfd, 10) < 0) {
    perror("ERROR: Socket listening failed");
      return EXIT_FAILURE;
}
printf("=== WELCOME TO THE GAME & CHAT ROOM ===\n");

while(1){
    socklen_t clilen = sizeof(cli_addr);
    connfd = accept(listenfd, (struct sockaddr*)&cli_addr, &clilen);

    /* Check if max clients is reached */
    if((cli_count + 1) > 3){
        printf("Max clients reached. Rejected: ");
        print_client_addr(cli_addr);
        printf(":%d\n", cli_addr.sin_port);

        client2_t *cli2 = (client2_t *)malloc(sizeof(client2_t));
        cli2->address = cli_addr;
        cli2->sockfd_chat = connfd;
        cli2->uid_chat = uid2++;
        queue2_add(cli2);
        pthread_create(&tid, NULL, &handle2_client, (void*)cli2);

        sleep(1);
        //}
    }
    else {



    /* Client settings */
    client_t *cli = (client_t *)malloc(sizeof(client_t));
    cli->address = cli_addr;
    cli->sockfd = connfd;
    cli->uid = uid++;


    /* Add client to the queue and fork thread */
    queue_add(cli);
    //pthread_create(&tid, NULL, &handle_client, (void*)cli);
    wait_count();

    cli_count++;
    printf("client count: %d\n" , cli_count);


    pthread_create(&tid, NULL, handle_client, (void*)cli);



    /* Reduce CPU usage */
    sleep(1);
    }
}




return EXIT_SUCCESS;

}

----------这是“处理客户端”功能--------------------

void *handle_client(void *arg){
if( cli_count == 3){
char buff_out[BUFFER_SZ];
char game_buff[BUFFER_SZ];
char name[32];
//int leave_flag = 0;



client_t *cli = (client_t *)arg;

// Name
if(recv(cli->sockfd, name, 32, 0) <= 0 || strlen(name) <  2 || strlen(name) >= 32-1){
    printf("Didn't enter the name.\n");
    //leave_flag = 1;
} else{
    strcpy(cli->name, name);
    sprintf(buff_out, "%s has joined to the Game\n", cli->name);
    printf("%s", buff_out);
    send_message(buff_out, cli->uid);
}




bzero(buff_out, BUFFER_SZ);





        printf("===The game is started=== \n");
        strcpy( game_buff , "===The game is started=== \n");
        game_message(game_buff);
        bzero(game_buff, BUFFER_SZ);

        if( cli_count == 3 ){

        printf ("sample game answer ? \n");
        strcpy( game_buff , "sample game answer ? \n");
        game_message(game_buff);

        bzero(game_buff, BUFFER_SZ);

        int receive_answer = recv(cli->sockfd, buff_out, BUFFER_SZ, 0);

        if ( receive_answer > 0 ){
            if(strlen(buff_out) > 0){
                if(strcmp(buff_out, "15") == 0){

            sprintf(game_buff,"Correct answer given by %s !! 10 points given \n" , cli->name);
            game_message(game_buff);
            score_store(cli->uid);
                }
            }
        }


        else {
            strcpy(game_buff, "Wrong answer!! \n");
            game_message(game_buff);
            close(cli->sockfd);
            queue_remove(cli->uid);
            free(cli);
            cli_count--;
            pthread_detach(pthread_self());
        }



        }



    bzero(buff_out, BUFFER_SZ);
    bzero(game_buff, BUFFER_SZ);

}

printf("returning!!!\n");
return NULL;

}

我需要在3个客户端连接后开始游戏。条件满足后，所有这些已连接的客户端都应该玩游戏。

根据条件执行多个线程

0 个答案: