Classic ASP
Isabel Connect Create First Access Token and Refresh Token

Creates your first access token and refresh token. Once created, the refresh token can be used to get a new access token after it expires, or before it expires.
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set http = Server.CreateObject("Chilkat.Http")

' Implements the following CURL command:

' curl -X POST https://api.ibanity.com/isabel-connect/oauth2/token \
' --cert certificate.pem:qwertyuiop1 \
' --key private_key.pem  \
' -H "Content-Type: application/x-www-form-urlencoded" \
' -H "Accept: application/vnd.api+json" \
' -H "Ibanity-Idempotency-Key: af621a8f-f74b-41a2-b011-336997633df4"  \
' -d grant_type=authorization_code \
' -d code=valid_authorization_code \
' -d client_id=valid_client_id \
' -d client_secret=valid_client_secret \
' -d redirect_uri=https://fake-tpp.com 

' Ibanity provides the certificate + private key in PFX format.  This example will use the .pfx instead of the pair of PEM files.
' (It is also possible to implement using Chilkat with the PEM files, but PFX is easier.)
set cert = Server.CreateObject("Chilkat.Cert")
success = cert.LoadPfxFile("qa_data/pfx/my_ibanity_certificate.pfx","my_pfx_password")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

success = http.SetSslClientCert(cert)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

set req = Server.CreateObject("Chilkat.HttpRequest")
req.HttpVerb = "POST"
req.Path = "/isabel-connect/oauth2/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","authorization_code"

' Note: For sandbox testing, we literally want to use the strings
' "valid_authorization_code", "valid_client_id", and "valid_client_secret".
' For the live app, you would replace these with actual values.
req.AddParam "code","valid_authorization_code"
req.AddParam "client_id","valid_client_id"
req.AddParam "client_secret","valid_client_secret"
req.AddParam "redirect_uri","https://fake-tpp.com"

req.AddHeader "Accept","application/vnd.api+json"

set crypt = Server.CreateObject("Chilkat.Crypt2")
idempotencyKey = crypt.GenerateUuid()
Response.Write "<pre>" & Server.HTMLEncode( "Ibanity-Idempotency-Key: " & idempotencyKey) & "</pre>"
req.AddHeader "Ibanity-Idempotency-Key",idempotencyKey

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpReq("https://api.ibanity.com/isabel-connect/oauth2/token",req,resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
success = resp.GetBodySb(sbResponseBody)
set jResp = Server.CreateObject("Chilkat.JsonObject")
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = 0

Response.Write "<pre>" & Server.HTMLEncode( "Response Body:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( jResp.Emit()) & "</pre>"

respStatusCode = resp.StatusCode
Response.Write "<pre>" & Server.HTMLEncode( "Response Status Code = " & respStatusCode) & "</pre>"
If (respStatusCode >= 400) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Response Header:") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( resp.Header) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

' Sample JSON response:
' (Sample code for parsing the JSON response is shown below)

' {
'   "token_type": "Bearer",
'   "scope": "cloudconnect",
'   "refresh_token": "valid_refresh_token",
'   "expires_in": 1799,
'   "access_token": "access_token_1617371230"
' }

' Sample code for parsing the JSON response...
' Use the following online tool to generate parsing code from sample JSON:
' Generate Parsing Code from JSON

token_type = jResp.StringOf("token_type")
scope = jResp.StringOf("scope")
refresh_token = jResp.StringOf("refresh_token")
expires_in = jResp.IntOf("expires_in")
access_token = jResp.StringOf("access_token")

' Save to a file for future use in refreshing the access token.
' The refresh token is the same each time we refresh to get a new access token.
success = jResp.WriteFile("qa_data/tokens/isabel_refresh_token.json")

' Also save to a file to be used as the current access token.
success = jResp.WriteFile("qa_data/tokens/isabel_access_token.json")

%>
</body>
</html>