Visual Basic 6.0

ABN AMRO OAuth2 Client Credentials Authentication

See more ABN AMRO Examples

Demonstrates how to obtain an access token for an ABN AMRO online API using OAuth2 with the Client Credentials flow. Visual Basic 6.0

Dim success As Long
success = 0

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

' This example sends the following CURL request:

' 	curl -X POST -k https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2 \
' 	-v \
' 	--cert TPPCertificate.crt \
' 	--key TPPprivateKey.key \
' 	-H 'Cache-Control: no-cache' \
' 	-H 'Content-Type: application/x-www-form-urlencoded' \
' 	-d 'grant_type=client_credentials&client_id=TPP_test&scope=psd2:payment:sepa:write psd2:payment:sepa:read'

Dim cert As New ChilkatCert
success = cert.LoadFromFile("qa_data/certs/TPPCertificate.cer")
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

Dim bdKey As New ChilkatBinData
success = bdKey.LoadFile("qa_data/certs/TPPprivateKey.key")

Dim privKey As New PrivateKey
success = privKey.LoadAnyFormat(bdKey,"passwordIfNeeded")
If (success = 0) Then
    Debug.Print privKey.LastErrorText
    Exit Sub
End If

success = cert.SetPrivateKey(privKey)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

Dim http As New ChilkatHttp

success = http.SetSslClientCert(cert)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim req As New ChilkatHttpRequest
req.AddParam "grant_type","client_credentials"
req.AddParam "client_id","TPP_test"
req.AddParam "scope","psd2:payment:sepa:write psd2:payment:sepa:read"

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

Dim resp As New ChilkatHttpResponse
success = http.HttpReq("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",req,resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

If (resp.StatusCode <> 200) Then
    Debug.Print resp.BodyStr
    Exit Sub
End If

' Get the JSON result:
' {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
Dim json As New ChilkatJsonObject
success = json.Load(resp.BodyStr)
Debug.Print "access_token: " & json.StringOf("access_token")
Debug.Print "token_type: " & json.StringOf("token_type")
Debug.Print "expires_in: " & json.StringOf("expires_in")