(Unicode C) WhatsApp - Download/Retrieve Media

Demonstrates how to download media previously uploaded to the WhatsApp Business API client

For more information, see https://developers.facebook.com/docs/whatsapp/api/media#retrieve

Chilkat C/C++ Library Downloads
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#include <C_CkHttpW.h>
#include <C_CkBinDataW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkBinDataW bdResponseBody;
    int respStatusCode;

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

    http = CkHttpW_Create();

    // Implements the following CURL command:

    // curl -X GET \
    //   https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f \
    //   -H 'Authorization: Bearer your-auth-token' \
    //   -o path/filename

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Adds the "Authorization: Bearer your-auth-token" header.
    CkHttpW_putAuthToken(http,L"your-auth-token");

    bdResponseBody = CkBinDataW_Create();
    success = CkHttpW_QuickGetBd(http,L"https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f",bdResponseBody);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bdResponseBody);
        return;
    }

    respStatusCode = CkHttpW_getLastStatus(http);
    wprintf(L"response status code = %d\n",respStatusCode);
    wprintf(L"response header = %s\n",CkHttpW_lastResponseHeader(http));

    if (respStatusCode != 200) {
        wprintf(L"Error response body:\n");
        wprintf(L"%s\n",CkBinDataW_getString(bdResponseBody,L"utf-8"));
        CkHttpW_Dispose(http);
        CkBinDataW_Dispose(bdResponseBody);
        return;
    }

    success = CkBinDataW_WriteFile(bdResponseBody,L"path/filename");


    CkHttpW_Dispose(http);
    CkBinDataW_Dispose(bdResponseBody);

    }