套接字绑定失败errno = 99

Question

我正在尝试绑定服务器套接字,以便我可以接收和侦听来自其他客户端的传入消息.但我无法绑定,它返回一个错误 - 套接字绑定失败:99.我读了它的意思,它说errno 99表明套接字不存在？有任何想法吗？谢谢

  UDP_socketID = socket(AF_INET, SOCK_DGRAM, 0);
  if (UDP_socketID < 0)
  {
    printf("Socket creation failed! Error = %d\n\n", errno);
    exit(0);
  }

  //specify server address, port and IP
  bzero((char *)&serverAddr, sizeof(serverAddr));
  serverAddr.sin_family = AF_INET;
  serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  serverAddr.sin_port = htons(SERV_PORT);
  check = inet_aton(SERVER_IP, &serverAddr.sin_addr);
  if (check == 0)
printf("IP conversion error!\n\n");

  start = bind(UDP_socketID, (struct sockaddr *) &serverAddr, sizeof(serverAddr));
  if (start < 0) {
    printf("Socket bind failed = %d\n", errno);
    exit(0);
}
  else
    printf("Socket bind successful!\n"); 

Answer 1

99是EADDRNOTAVAIL.这意味着(来自man bind(2)):

请求了一个不存在的接口,或者请求的地址不是本地的.

也许这SERVER_IP不是你主机的IP.