FTP断点续传

花了一天的时间整出来这点东西，写一下吧！

[cpp]
VOID FtpThief::Connect(TCHAR*IP,TCHAR*USER,TCHAR*PASS,UINT PORT)
{
    pInternetSession = new CInternetSession("MR",INTERNET_OPEN_TYPE_PRECONFIG);
    try
    {
        pFtpConnection = pInternetSession->GetFtpConnection(IP,USER,PASS,PORT);
        pFtpConnection->CreateDirectory("web\\uploadfile");

        bconnect=TRUE;
    }catch(CInternetException* pEx)
    {
        TCHAR szErr[1024];
        pEx->GetErrorMessage(szErr, 1024);
        printf("错误:%s\n",szErr);
        pEx->Delete();
    }

}

//获取FTP上文件大小
LONGLONG FtpThief::GetFtpFileSize(CFtpConnection* pFtpCon, CString strFtpFile)
{
     CFtpFileFind   ftpFind(pFtpCon);
     LONGLONG filelen = 0;
     if(ftpFind.FindFile(strFtpFile))
     {
     ftpFind.FindNextFile();
     filelen =   ftpFind.GetLength();
     }
     ftpFind.Close();
     return filelen;
}

//断点续传
bool FtpThief::FtpTransProc(TCHAR*FilePath,TCHAR*FileName)
{
    CString m_ftpPath = FileName;
    CFile localFile;
    DWORD nRet = localFile.Open(FilePath,CFile::modeRead|CFile::shareDenyRead);

    if(!nRet)
    {
        OutputDebugString("open file error");
        return false;
    }
    //获取文件大小，设置续传文件的位置
    long long llFileBegin;
    llFileBegin = GetFtpFileSize(pFtpConnection,m_ftpPath);
    localFile.Seek(llFileBegin,CFile::begin);

    ///pFtpConnection->CreateDirectory(m_ftpPath);
    //是指路径：如FTP://file1/file2.rar 则是"file1//file2.rar"

    CInternetFile *pInetFile = NULL;
    pInetFile=pFtpConnection->Command("APPE " +m_ftpPath,CFtpConnection::CmdRespWrite);
    DWORD len;
    long long m_nFileTransSize = 0;
    char buffer[MAX_PATH*1024*2] = {0};
    DWORD nBufSize = MAX_PATH*1024*2;
    //读写文件 www.zzzyk.com
    while(len=localFile.Read(buffer,nBufSize))
    {
        pInetFile->Write(buffer,len);
        m_nFileTransSize += len;
    }
    localFile.Close();
    return true;
}

补充：软件开发 , C++ ,