Internet time 时间同步(转载)

本文介绍了一种在PPC设备上实现网络时间同步的方法。主要包括通过因特网获取时间数据的具体实现步骤,将获取到的Internet时间转换为系统时间的过程,以及如何设置系统时间来完成整个同步流程。

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从网络上同步时间,在PPC中可以起到自动校准时间的作用, 时间的设置很简单,我这里就不多写了,主要是获得时间数据。

1、获得因特网的时间数据。


int GetInternetTime(ULONG &ulTime)
{
    SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (INVALID_SOCKET == sock)
    {
        return -1;
    }
    sockaddr_in servAddr;
    servAddr.sin_family = AF_INET;
    servAddr.sin_port = htons(37);

    // http://tf.nist.gov/tf-cgi/servers.cgi 
    // nist1-sj.WiTime.net 64.125.78.85 San Jose, California    
    servAddr.sin_addr.S_un.S_addr = inet_addr("64.125.78.85");

    int i;
    BOOL bCont = FALSE;
    for (i = 0; i < RETRY_TIMES; i++)
    {
        if (-1 == connect(sock, (sockaddr *)&servAddr, sizeof(servAddr)))
        {
            continue;
        }
        else
        {
            bCont = TRUE;
            break;
        }
    }
    int nRecv = SOCKET_ERROR;
    if (bCont)
    {
        bCont = FALSE;
        for (i = 0; i < RETRY_TIMES; i++)
        {
            nRecv = recv(sock, (char *)&ulTime, sizeof(ulTime), 0);
            if (nRecv > 0)
            {
                ulTime = ntohl(ulTime);
                bCont = TRUE;
                break;
            }
            else
            {
                continue;
            }
        }
    }
     
    closesocket(sock);

    if (FALSE == bCont)
    {
        return -2;
    }
    return 0;
}

2、由Internet 时间转化为系统时间:


void ITimeToSTime(SYSTEMTIME &st, const ULONG ulTime)
{
    FILETIME ft;
    SYSTEMTIME stBase;

    memset(&stBase, 0, sizeof(stBase));
    stBase.wYear = 1900;
    stBase.wMonth = 1;
    stBase.wDay = 1;
    SystemTimeToFileTime(&stBase, &ft);
    LONGLONG * pLLong = (LONGLONG *) &ft;
    *pLLong += (LONGLONG) 10000000 * ulTime;
    FILETIME ft_local;
    FileTimeToLocalFileTime(&ft, &ft_local);
    FileTimeToSystemTime(&ft_local, &st);
}

3、在吧转化好的系统时间设置成系统的时间,大功告成。
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'https:' : 'http:') + '/static.duoshuo.com/embed.js'; ds.charset = 'UTF-8'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(ds); })(); </script> <!-- 多说公共JS代码 end --> </div> </div> </div> </div> </li> <li id="page_Blog"> <img src="images/bg_content.png" alt="" class="bg_cont"> <span class="back"><img src="images/nav5.png" alt="" usemap="#back"><a href="index.html#close">返回</a></span> <div class="pad"> <h2>爱的映像</h2> <div class="relative"> <div class="scroll"> <ul class="gallery fancybox"> <li style="line-height:120px"><a href="images/uploadimage/imglsh001.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/imglsh001small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/imglsh002.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/imglsh002small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/img003.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/img003small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/imglsh001.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/imglsh001small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/imglsh002.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/imglsh002small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/img003.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/img003small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/img004.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/img004small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/imglsh002.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/imglsh002small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/img003.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/img003small.jpg" alt=""></a></li> <li style="line-height:120px"><a href="images/uploadimage/img004.jpg" rel="prettyPhoto[gallery1]"><img src="images/uploadimage/img004small.jpg" alt=""></a></li> </ul> </div> </div> </div> </li> <li id="page_Time"> <img src="images/bg_content.png" alt="" class="bg_cont"> <span class="back"><img src="images/nav6.png" alt="" usemap="#back"><a href="index.html#close">返回</a></span> <div class="pad"> <h2>时光沙漏</h2> <div id="loveHeart" style="margin-top: 30px;font-size: 25px;"> <span style="">宝贝你知道我爱你爱了多久了吗?</span> <div id="elapseClock" style="margin: 10px 0px 10px 0px;"></div> <img src="images/1.gif" />    <img src="images/2.gif" /><br/><br/> <div id="loveu"> 爱:从2014-2-6开始!<br/> <div class="signature" style="float: right; margin-right: 50px;">by 浟佳 </div> </div> </div> </div> </li> </ul> </article> <!--content end--> </div> </div> <div class="bg1"> <div class="main"> <!--footer --> <footer style="line-height:20px"> <div id="copyright"> <script language="JavaScript"></script> </div> <!-- {%FOOTER_LINK} --> </footer> <!--footer end--> </div> </div> </div> <script> $(window).load(function() { $('.page_spinner').fadeOut(); $('body').css({overflow:'visible'}); }) </script> <script type="text/javascript">//修改时光沙漏时间 var offsetX = $("#loveHeart").width() / 2; var offsetY = $("#loveHeart").height() / 2 - 55; var together = new Date(); together.setFullYear(2014, 02, 06); together.setHours(17); together.setMinutes(0); together.setSeconds(0); together.setMilliseconds(0); setTimeout(function () { adjustWordsPosition(); startHeartAnimation(); }, 3000); timeElapse(together); setInterval(function () { timeElapse(together); }, 500); adjustCodePosition(); $("#code").typewriter(); </script> <audio id="bgmMusic" src="http://www.51mp3ring.com/51mp3ring_com2/at200611121582079026.mp3" preload="auto" type="audio/mp3" autoplay loop></audio> <!--coded by koma--> <!--LIVEDEMO_00 --> </body> </head> </html>补充并修改该代码
最新发布
05-21
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