Restart/Resume FTP Download

Resume downloading a file from an FTP server.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <CkFtp2.h>
#include <CkString.h>

void ChilkatSample(void)
    {
    CkFtp2 ftp;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = ftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("%s\n",ftp.lastErrorText());
        return;
    }

    ftp.put_Hostname("ftp.chilkatsoft.com");
    ftp.put_Username("****");
    ftp.put_Password("****");

    //  Connect and login to the FTP server.
    success = ftp.Connect();
    if (success != true) {
        printf("%s\n",ftp.lastErrorText());
        return;
    }

    //  Change to the remote directory where the file is located.
    //  This step is only necessary if the file is not in the root directory
    //  for the FTP account.
    success = ftp.ChangeRemoteDir("temp");
    if (success != true) {
        printf("%s\n",ftp.lastErrorText());
        return;
    }

    //  To resume a download, it is assumed that the partial file
    //  is already present on the local filesystem.
    //  You only need to set the RestartNext property to resume
    //  the download.  The Chilkat FTP component sets the resume
    //  point by getting the existing size of the target (local) file.
    ftp.put_RestartNext(true);

    CkString localFilename;
    localFilename = "big.zip";
    CkString remoteFilename;
    remoteFilename = "big.zip";

    //  Resume downloading...
    success = ftp.GetFile(remoteFilename,localFilename);
    if (success != true) {
        printf("%s\n",ftp.lastErrorText());
        return;
    }

    ftp.Disconnect();

    printf("File Downloaded!\n");
    }