(VB.NET UWP/WinRT) Okta: Use the Resource Owner Password Flow

Demonstrates how to get an access token using the Resource Owner Password Flow.

For more information, see https://developer.okta.com/docs/guides/implement-password/use-flow/

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Dim http As New Chilkat.Http
Dim success As Boolean

' 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"

Dim req As New 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")

Dim resp As Chilkat.HttpResponse = Await http.PostUrlEncodedAsync("https://{yourOktaDomain}/oauth2/default/v1/token",req)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim sbResponseBody As New Chilkat.StringBuilder
resp.GetBodySb(sbResponseBody)
Dim jResp As New Chilkat.JsonObject
jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

Debug.WriteLine("Response Body:")
Debug.WriteLine(jResp.Emit())

Dim respStatusCode As Integer = resp.StatusCode
Debug.WriteLine("Response Status Code = " & respStatusCode)
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(resp.Header)
    Debug.WriteLine("Failed.")

    Exit Sub
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




Dim access_token As String = jResp.StringOf("access_token")
Dim token_type As String = jResp.StringOf("token_type")
Dim expires_in As Integer = jResp.IntOf("expires_in")
Dim scope As String = jResp.StringOf("scope")
Dim id_token As String = jResp.StringOf("id_token")