(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.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkFtp2.h>
#include <C_CkFileAccess.h>
#include <C_CkStream.h>
#include <C_CkTask.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    HCkFtp2 ftp;
    BOOL success;
    HCkFileAccess fac;
    HCkStream streamObj;
    HCkTask t;
    HCkBinData bd;

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

    ftp = CkFtp2_Create();

    CkFtp2_putHostname(ftp,"www.my-ftp-server.com");
    CkFtp2_putUsername(ftp,"mFtpLogin");
    CkFtp2_putPassword(ftp,"myFtpPassword");
    CkFtp2_putAuthTls(ftp,TRUE);
    CkFtp2_putPassive(ftp,TRUE);

    // Connect and login to the FTP server using TLS.
    success = CkFtp2_Connect(ftp);
    if (success != TRUE) {
        printf("%s\n",CkFtp2_lastErrorText(ftp));
        CkFtp2_Dispose(ftp);
        return;
    }

    // We'll read the incoming data chunk-by-chunk and write to an output file.
    fac = CkFileAccess_Create();
    success = CkFileAccess_OpenForWrite(fac,"qa_output/penguins2.jpg");
    if (success != TRUE) {
        printf("%s\n",CkFileAccess_lastErrorText(fac));
        CkFtp2_Dispose(ftp);
        CkFileAccess_Dispose(fac);
        return;
    }

    streamObj = CkStream_Create();

    // Create a task to do the FTP download.
    t = CkFtp2_GetFileToStreamAsync(ftp,"penguins2.jpg",streamObj);
    if (CkFtp2_getLastMethodSuccess(ftp) != TRUE) {
        printf("%s\n",CkFtp2_lastErrorText(ftp));
        CkFtp2_Dispose(ftp);
        CkFileAccess_Dispose(fac);
        CkStream_Dispose(streamObj);
        return;
    }

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

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

    CkFileAccess_FileClose(fac);

    CkTask_Dispose(t);

    printf("Success.\n");


    CkFtp2_Dispose(ftp);
    CkFileAccess_Dispose(fac);
    CkStream_Dispose(streamObj);
    CkBinData_Dispose(bd);

    }