(C) REST Download Binary File to Memory

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Download a binary file to a Chilkat BinData object.

Chilkat C/C++ Library Downloads
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#include <C_CkRest.h>
#include <C_CkBinData.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL success;
    const char *pathPartOfUrl;
    const char *domain;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    BOOL success;
    HCkBinData bd;
    HCkStringBuilder sbErrorText;

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    rest = CkRest_Create();

    // We're going to download a sample MS-Word doc file.
    // The URLs of our MS-Word sample documents are:

    // https://www.chilkatdownload.com/sample_data/sample.doc
    // https://www.chilkatdownload.com/sample_data/sample.docx

    pathPartOfUrl = "/sample_data/sample.doc";
    domain = "chilkatdownload.com";

    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,domain,port,bTls,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        return;
    }

    bd = CkBinData_Create();
    success = CkRest_FullRequestNoBodyBd(rest,"GET",pathPartOfUrl,bd);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkBinData_Dispose(bd);
        return;
    }

    // A 200 response is expected for actual success.
    // If we don't get a 200 response, then the response body was not actually
    // the file data, but it was text containing error information.
    if (CkRest_getResponseStatusCode(rest) != 200) {
        sbErrorText = CkStringBuilder_Create();
        CkStringBuilder_AppendBd(sbErrorText,bd,"utf-8",0,0);
        printf("%s\n",CkStringBuilder_getAsString(sbErrorText));
        printf("-- Failed.\n");
        CkRest_Dispose(rest);
        CkBinData_Dispose(bd);
        CkStringBuilder_Dispose(sbErrorText);
        return;
    }

    // Save to a local file.
    // Change the file path based on your operating system or needs...
    success = CkBinData_WriteFile(bd,"c:/temp/qa_output/sample.doc");
    if (success != TRUE) {
        printf("Failed to save to local file.\n");
        CkRest_Dispose(rest);
        CkBinData_Dispose(bd);
        CkStringBuilder_Dispose(sbErrorText);
        return;
    }

    printf("REST Download of MS-Word File was successful.\n");


    CkRest_Dispose(rest);
    CkBinData_Dispose(bd);
    CkStringBuilder_Dispose(sbErrorText);

    }