Unicode C

FTP Download Binary File to a Stream

See more FTP Examples

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

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

Unicode C

#include <C_CkFtp2W.h>
#include <C_CkFileAccessW.h>
#include <C_CkStreamW.h>
#include <C_CkTaskW.h>
#include <C_CkBinDataW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkFtp2W ftp;
    HCkFileAccessW fac;
    HCkStreamW streamObj;
    HCkTaskW t;
    HCkBinDataW bd;

    success = FALSE;

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

    ftp = CkFtp2W_Create();

    CkFtp2W_putHostname(ftp,L"www.my-ftp-server.com");
    CkFtp2W_putUsername(ftp,L"mFtpLogin");
    CkFtp2W_putPassword(ftp,L"myFtpPassword");
    CkFtp2W_putAuthTls(ftp,TRUE);
    CkFtp2W_putPassive(ftp,TRUE);

    // Connect and login to the FTP server using TLS.
    success = CkFtp2W_Connect(ftp);
    if (success != TRUE) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        return;
    }

    // We'll read the incoming data chunk-by-chunk and write to an output file.
    fac = CkFileAccessW_Create();
    success = CkFileAccessW_OpenForWrite(fac,L"qa_output/penguins2.jpg");
    if (success != TRUE) {
        wprintf(L"%s\n",CkFileAccessW_lastErrorText(fac));
        CkFtp2W_Dispose(ftp);
        CkFileAccessW_Dispose(fac);
        return;
    }

    streamObj = CkStreamW_Create();

    // Create a task to do the FTP download.
    t = CkFtp2W_GetFileToStreamAsync(ftp,L"penguins2.jpg",streamObj);
    if (CkFtp2W_getLastMethodSuccess(ftp) != TRUE) {
        wprintf(L"%s\n",CkFtp2W_lastErrorText(ftp));
        CkFtp2W_Dispose(ftp);
        CkFileAccessW_Dispose(fac);
        CkStreamW_Dispose(streamObj);
        return;
    }

    // Start the task in a background thread.
    CkTaskW_Run(t);

    bd = CkBinDataW_Create();
    while (CkStreamW_getEndOfStream(streamObj) != TRUE) {
        // Get the next chunk of JPG bytes.
        CkStreamW_ReadBd(streamObj,bd);
        // Do something with it..
        // In this simple example, we'll just write to the file.
        CkFileAccessW_FileWriteBd(fac,bd,0,0);
        // Clear for the next read.
        CkBinDataW_Clear(bd);
    }

    CkFileAccessW_FileClose(fac);

    CkTaskW_Dispose(t);

    wprintf(L"Success.\n");


    CkFtp2W_Dispose(ftp);
    CkFileAccessW_Dispose(fac);
    CkStreamW_Dispose(streamObj);
    CkBinDataW_Dispose(bd);

    }