FTP Upload with Progress Monitoring

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C++ source code to FTP upload a file.

// To get FTP progress monitoring callbacks, declare a C++ class
// that inherits from the CkFtpProgress base class and provide
// implementations for FtpPercentDone and AbortCheck.

class MyFtpProgress : public CkFtpProgress
    {
    // pctDone is a percent value between 1 and 100.
    // FtpPercentDone is called each time pctDone increases.
    // The abort argument can be set to cause the FTP to abort while in progress.
    void FtpPercentDone(long pctDone, bool *abort) 
	{ 
	printf("%d Percent Done!\n",pctDone);

	// In this example, we will abort the transfer after it is 40% complete.
	//if (pctDone >= 40)
	    //{
	    //*abort = true;
	    //}
	}

    // Called periodically to check to see if the transfer should be aborted.
    void AbortCheck(bool *abort) 
	{ 
	printf("Abort Check!\n");

	// Set the *abort argument to true to force a transfer to abort.
	// For example:
	//*abort = true;
	}

    };

// Upload a file to an FTP server.
void FtpUpload(void)
    {
    CkFtp2 ftp;
    MyFtpProgress myProgress;

    ftp.UnlockComponent("anything for 30-day trial");

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

    // non-passive (active) connections are most likely to work if firewalls are present.
    ftp.put_Passive(false);

    // The HeartbeatMs property controls the frequency of AbortCheck callbacks.
    // The default value is 0 (no callbacks).  Set it to a reasonable number of milliseconds:
    ftp.put_HeartbeatMs(250);

    // Set the SendBufferSize to a smaller value than the default of 512K to get more frequent callbacks:
    // This may slightly degrade performance.
    ftp.put_SendBufferSize(4096);

    bool success = ftp.Connect();
    if (!success)
	{
	ftp.SaveLastError("ftpLog.txt");
	return;
	}

    // Call PutFile2 to upload with progress monitoring.
    // Call PutFile to upload without progress monitoring.
    success = ftp.PutFile2("testUpload.dat","testUpload.dat",myProgress);
    if (!success)
	{
	ftp.SaveLastError("ftpLog.txt");
	}

    ftp.Disconnect();