Classic ASP
Group: Refresh OAuth2 Access Token

Refreshes an expired or non-expired OAuth2 access token for the Microsoft Group REST API.
Chilkat Classic ASP Downloads

Classic ASP
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.LoadFile("qa_data/tokens/msGraphGroup.json")
If (success <> 1) Then
    Response.End
End If

set req = Server.CreateObject("Chilkat.HttpRequest")
req.AddParam "grant_type","refresh_token"
req.AddParam "redirect_uri","http://localhost:3017/"
req.AddParam "client_id","MICROSOFT-GRAPH-CLIENT-ID"
req.AddParam "client_secret","MICROSOFT-GRAPH-CLIENT-SECRET"
req.AddParam "refresh_token",json.StringOf("refresh_token")
req.AddParam "scope","openid profile offline_access user.readwrite group.readwrite.all files.readwrite"

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

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

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpReq("https://login.microsoftonline.com/common/oauth2/v2.0/token",req,resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

' Load the JSON response.
success = json.Load(resp.BodyStr)
json.EmitCompact = 0

' Show the JSON response.
Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

Response.Write "<pre>" & Server.HTMLEncode( "Response status code: " & resp.StatusCode) & "</pre>"

' If the response status code is not 200, then it's an error.
If (resp.StatusCode <> 200) Then
    Response.End
End If

' Save the refreshed access token JSON to a file for future requests.
set fac = Server.CreateObject("Chilkat.FileAccess")
success = fac.WriteEntireTextFile("qa_data/tokens/msGraphGroup.json",json.Emit(),"utf-8",0)

Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

%>
</body>
</html>