(MFC) 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 MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkHttp http;
    bool success;

    // 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.
    http.put_AuthToken("your-auth-token");

    CkBinData bdResponseBody;
    success = http.QuickGetBd("https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f",bdResponseBody);
    if (success == false) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    int respStatusCode = http.get_LastStatus();
    strOut.append("response status code = ");
    strOut.appendInt(respStatusCode);
    strOut.append("\r\n");
    strOut.append("response header = ");
    strOut.append(http.lastResponseHeader());
    strOut.append("\r\n");

    if (respStatusCode != 200) {
        strOut.append("Error response body:");
        strOut.append("\r\n");
        strOut.append(bdResponseBody.getString("utf-8"));
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    success = bdResponseBody.WriteFile("path/filename");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }