(Objective-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 Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoHttp.h>
#import <CkoBinData.h>

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

CkoHttp *http = [[CkoHttp alloc] init];
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.AuthToken = @"your-auth-token";

CkoBinData *bdResponseBody = [[CkoBinData alloc] init];
success = [http QuickGetBd: @"https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f" binData: bdResponseBody];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

int respStatusCode = [http.LastStatus intValue];
NSLog(@"%@%d",@"response status code = ",respStatusCode);
NSLog(@"%@%@",@"response header = ",http.LastResponseHeader);

if (respStatusCode != 200) {
    NSLog(@"%@",@"Error response body:");
    NSLog(@"%@",[bdResponseBody GetString: @"utf-8"]);
    return;
}

success = [bdResponseBody WriteFile: @"path/filename"];