Unicode 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.) Unicode C++

#include <CkJsonObjectW.h>
#include <CkHttpRequestW.h>
#include <CkHttpW.h>
#include <CkHttpResponseW.h>
#include <CkFileAccessW.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

    CkJsonObjectW json;
    success = json.LoadFile(L"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

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

    CkHttpW http;

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

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

    CkHttpResponseW resp;
    success = http.HttpReq(L"https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",req,resp);
    if (success == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

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

    // Show the JSON response.
    wprintf(L"%s\n",json.emit());

    wprintf(L"Response status code: %d\n",resp.get_StatusCode());

    // 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.
    CkFileAccessW fac;
    fac.WriteEntireTextFile(L"qa_data/tokens/rabobank.json",json.emit(),L"utf-8",false);
    }