C++

Rabobank Refresh OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to refresh an expired Rabobank OAuth2 access token. (No interactive user interaction is required to refresh an access token.) C++

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

void ChilkatSample(void)
    {
    bool success = false;

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

    // We previously obtained an access token and saved the JSON to a file using this example:
    // Get Rabobank OAuth2 Access Token

    CkJsonObject json;
    success = json.LoadFile("qa_data/tokens/rabobank.json");
    if (success != true) {
        return;
    }

    // {
    //   "token_type": "Bearer",
    //   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
    //   "expires_in": 3600,
    //   "consented_on": 1584641121,
    //   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
    //   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
    //   "refresh_token_expires_in": 157784760,
    //   "expires_on": "1584644722"
    // }

    // Refresh the access token by sending a POST like this:
    // 

    // POST /oauth2/token
    // Headers:
    //     Content-Type: application/x-www-form-urlencoded
    //     Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)
    // 
    // Body (x-www-form-urlencoded):
    //     grant_type: refresh_token
    //     refresh_token: REFRESH_TOKEN

    CkHttpRequest req;
    req.AddParam("grant_type","refresh_token");
    req.AddParam("refresh_token",json.stringOf("refresh_token"));

    CkHttp http;

    // Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
    http.put_BasicAuth(true);
    http.put_Login("YOUR_APP_CLIENT_ID");
    http.put_Password("YOUR_APP_CLIENT_SECRET");

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

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

    // Load the JSON response.
    json.Load(resp.bodyStr());
    json.put_EmitCompact(false);

    // Show the JSON response.
    std::cout << json.emit() << "\r\n";

    std::cout << "Response status code: " << resp.get_StatusCode() << "\r\n";

    // If the response status code is not 200, then it's an error.
    if (resp.get_StatusCode() != 200) {
        return;
    }

    // Save the refreshed access token JSON to a file for future requests.
    CkFileAccess fac;
    fac.WriteEntireTextFile("qa_data/tokens/rabobank.json",json.emit(),"utf-8",false);
    }