Classic ASP
Okta: Use the Resource Owner Password Flow

Demonstrates how to get an access token using the Resource Owner Password Flow.
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 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 --request POST \
'   --url https://{yourOktaDomain}/oauth2/default/v1/token \
'   --header 'accept: application/json' \
'   --user "client_id:client_secret" \
'   --header 'content-type: application/x-www-form-urlencoded' \
'   --data 'grant_type=password&username=myUserEmail&password=myPassword&scope=openid'

http.Login = "client_id"
http.Password = "client_secret"

set req = Server.CreateObject("Chilkat.HttpRequest")
req.HttpVerb = "POST"
req.Path = "/oauth2/default/v1/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","password"
req.AddParam "username","myUserEmail"
req.AddParam "password","myPassword"
req.AddParam "scope","openid"

req.AddHeader "accept","application/json"

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpReq("https://{yourOktaDomain}/oauth2/default/v1/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)

' {
'   "access_token": "eyJraWQiOi ... jmiHD7wY9_gQ",
'   "token_type": "Bearer",
'   "expires_in": 3600,
'   "scope": "openid",
'   "id_token": "eyJraWQiOiJ ... W7KkWiPJnUSMoGw"
' }

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

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

%>
</body>
</html>