C++

Twitter - Application Only Authentication

Demonstrates how to get a Twitter OAuth2 token for application-only authentication.

This example is deprecated and no longer valid.

C++

#include <CkHttp.h>
#include <CkHttpRequest.h>
#include <CkHttpResponse.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    //  Note: Define your Twitter apps at https://apps.twitter.com/

    //  We're going to send an HTTPS POST that looks like this:

    //  POST /oauth2/token HTTP/1.1
    //  Host: api.twitter.com
    //  User-Agent: My Twitter App v1.0.23
    //  Authorization: Basic eHZ6MWV2RlM0d0VFUFRHRUZQSEJvZzpMOHFxOVBaeVJn
    //                       NmllS0dFS2hab2xHQzB2SldMdzhpRUo4OERSZHlPZw==
    //  Content-Type: application/x-www-form-urlencoded;charset=UTF-8
    //  Content-Length: 29
    //  Accept-Encoding: gzip
    //  
    //  grant_type=client_credentials

    //  Update these values with your consumer key and secret (also known as API key and API secret).
    const char *consumerKey = "TWITTER_CONSUMER_KEY";
    const char *consumerSecret = "TWITTER_CONSUMER_SECRET";

    CkHttp http;

    http.put_BasicAuth(true);
    http.put_Login(consumerKey);
    http.put_Password(consumerSecret);

    CkHttpRequest req;
    req.AddParam("grant_type","client_credentials");

    req.put_HttpVerb("POST");
    req.put_ContentType("application/x-www-form-urlencoded");

    CkHttpResponse resp;
    success = http.HttpReq("https://api.twitter.com/oauth2/token",req,resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Response Status Code: " << resp.get_StatusCode() << "\r\n";

    if (resp.get_StatusCode() != 200) {
        std::cout << "Expected a 200 response status code for success." << "\r\n";
        std::cout << resp.bodyStr() << "\r\n";
        return;
    }

    //  We should get a JSON response like this:

    //  {
    //      "token_type":"bearer",
    //      "access_token":"..."
    //  }

    CkJsonObject json;
    json.Load(resp.bodyStr());

    std::cout << "Access token = " << json.stringOf("access_token") << "\r\n";
    }