udp socket同样的代码为什么Linux行，Vxworks就不行？（有码）,该怎么解决

void usrAppInit (void)
{
#ifdef    USER_APPL_INIT
    USER_APPL_INIT;        /* for backwards compatibility */
#endif

    /* add application specific code here */

    int count, loopi, j;
    BYTE node_id = sysProcNumGet();
    END_OBJ * pEnd;
    char ipaddr[40];
    END_TBL_ENTRY* pDevTbl;
    BYTE bMasterMacAddress[6];
    BYTE byFpgaStatus;
    DWORD dwNodeType;
    
  int sockd;
  struct sockaddr_in my_addr, srv_addr;
  char buf[2048];
  int addrlen;

/*网口初始化*/
if (mBlkInit() != OK)
{
printf("intercom_init: mBlkInit fail!\n");
}
/*set mac address and IP address*/
    bMacAddress[0][5] = node_id;
    bMacAddress[1][5] = node_id;
    
    for (loopi = 0; loopi < 2; loopi++) 
    {
        pRouteCookie[loopi] = NULL;
    }
    muxAddrResFuncAdd (M2_ifType_ethernet_csmacd, 0x800, arpresolve);
    /* Add in mux ENDs. */
    for (count = 0, pDevTbl = endDevTbl; pDevTbl->endLoadFunc != END_TBL_END;
        pDevTbl++, count++)
    {
        if (!pDevTbl->processed)
        {
            pEnd = (END_OBJ *) muxDevLoad(pDevTbl->unit,
                                 pDevTbl->endLoadFunc,
                                 pDevTbl->endLoadString,
                                 pDevTbl->endLoan, pDevTbl->pBSP);
            if (pEnd == NULL)
            {
                printf("muxDevLoad failed for device entry %d!\n", count);
            }
        }
    }
    for (loopi = 0; loopi < count; loopi++) 
    {
        pEnd = endFindByName("lnPci", loopi);
        pRouteCookie[loopi] = muxBind("lnPci", loopi, (FUNCPTR)intercom_device_mux_receive_return, NULL, NULL, NULL, END_INTERNODE_COMM, "END_INTERNODE_COMM", 0);

        if (pRouteCookie[loopi] == NULL)
        {
            perror("pRouteCookie:");
            printf("pChannelCookie error1\n");
        }

        muxMCastAddrAdd(pEnd, bAllNodeMacAddress);
        muxMCastAddrAdd(pEnd, bAllSlaveMacAddress);
        muxDevStart(pEnd);
        /*Start ip protocol*/
        ipAttach(loopi, "lnPci");
        memset(ipaddr, 0, 40);
        sprintf(ipaddr, "192.168.%d.%d", 237+loopi, sysProcNumGet());
        usrNetIfConfig("lnPci", loopi, ipaddr, "", 0);
    }
  /*网口初始化结束，下面开始socket初始化和发包程序*/

  /* create a socket */
  sockd = socket(AF_INET, SOCK_DGRAM, 0);
  if (sockd == -1)
  {
    perror("Socket creation error");
    exit(1);
  }

  /* client address */
  my_addr.sin_family = AF_INET;
  my_addr.sin_addr.s_addr = INADDR_ANY;
  my_addr.sin_port = 0;

  bind(sockd, (struct sockaddr*)&my_addr, sizeof(my_addr));

  memset(buf, 0xab, 1465);
  printf("sent. buff length %d\n", strlen(buf));

  /* server address */ 
  srv_addr.sin_family = AF_INET;
  inet_aton("192.168.238.2", &srv_addr.sin_addr);
  srv_addr.sin_port = htons(atoi("5555"));

  taskDelay(3*100);
  for (loopi = 0; loopi < 2000; loopi++)
  {
  //printf("sent. buff length %d\n", strlen(buf));=============================1
  sendto(sockd, buf, strlen(buf)+1, 0, 
      (struct sockaddr*)&srv_addr, sizeof(srv_addr));
  //taskDelay(1);==========================2
  }
  printf("sent over\n");

  close(sockd);
}