Visual FoxPro

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.) Visual FoxPro

LOCAL lnSuccess
LOCAL loJson
LOCAL loReq
LOCAL loHttp
LOCAL loResp
LOCAL loFac

lnSuccess = 0

* 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

loJson = CreateObject('Chilkat.JsonObject')
lnSuccess = loJson.LoadFile("qa_data/tokens/rabobank.json")
IF (lnSuccess <> 1) THEN
    RELEASE loJson
    CANCEL
ENDIF

* {
*   "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

loReq = CreateObject('Chilkat.HttpRequest')
loReq.AddParam("grant_type","refresh_token")
loReq.AddParam("refresh_token",loJson.StringOf("refresh_token"))

loHttp = CreateObject('Chilkat.Http')

* Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
loHttp.BasicAuth = 1
loHttp.Login = "YOUR_APP_CLIENT_ID"
loHttp.Password = "YOUR_APP_CLIENT_SECRET"

loReq.HttpVerb = "POST"
loReq.ContentType = "application/x-www-form-urlencoded"

loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpReq("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",loReq,loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loJson
    RELEASE loReq
    RELEASE loHttp
    RELEASE loResp
    CANCEL
ENDIF

* Load the JSON response.
loJson.Load(loResp.BodyStr)
loJson.EmitCompact = 0

* Show the JSON response.
? loJson.Emit()

? "Response status code: " + STR(loResp.StatusCode)

* If the response status code is not 200, then it's an error.
IF (loResp.StatusCode <> 200) THEN
    RELEASE loJson
    RELEASE loReq
    RELEASE loHttp
    RELEASE loResp
    CANCEL
ENDIF

* Save the refreshed access token JSON to a file for future requests.
loFac = CreateObject('Chilkat.FileAccess')
loFac.WriteEntireTextFile("qa_data/tokens/rabobank.json",loJson.Emit(),"utf-8",0)

RELEASE loJson
RELEASE loReq
RELEASE loHttp
RELEASE loResp
RELEASE loFac