(Unicode C++) FTP Download Binary File to a Stream

Demonstrates how to FTP download a binary file to a Chilkat stream.

Note: This example requires Chilkat v9.5.0.67 or greater.

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#include <CkFtp2W.h>
#include <CkFileAccessW.h>
#include <CkStreamW.h>
#include <CkTaskW.h>
#include <CkBinDataW.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat FTP2 API to have been previously unlocked.
    // See FTP2 Unlock Sample for sample code.

    CkFtp2W ftp;

    ftp.put_Hostname(L"www.my-ftp-server.com");
    ftp.put_Username(L"mFtpLogin");
    ftp.put_Password(L"myFtpPassword");
    ftp.put_AuthTls(true);
    ftp.put_Passive(true);

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

    // We'll read the incoming data chunk-by-chunk and write to an output file.
    CkFileAccessW fac;
    success = fac.OpenForWrite(L"qa_output/penguins2.jpg");
    if (success != true) {
        wprintf(L"%s\n",fac.lastErrorText());
        return;
    }

    CkStreamW streamObj;

    // Create a task to do the FTP download.
    CkTaskW *t = ftp.GetFileToStreamAsync(L"penguins2.jpg",streamObj);
    if (ftp.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",ftp.lastErrorText());
        return;
    }

    // Start the task in a background thread.
    t->Run();

    CkBinDataW bd;
    while (streamObj.get_EndOfStream() != true) {
        // Get the next chunk of JPG bytes.
        streamObj.ReadBd(bd);
        // Do something with it..
        // In this simple example, we'll just write to the file.
        fac.FileWriteBd(bd,0,0);
        // Clear for the next read.
        bd.Clear();
    }

    fac.FileClose();

    delete t;

    wprintf(L"Success.\n");
    }