(Visual Basic 6.0) Azure OAuth2 Client Credentials Grant Flow

See more OAuth2 Examples

Note: Your Azure app must be registered as a single-tenant app to use client credentials.

For more information, see https://docs.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-client-creds-grant-flow

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

Dim http As New ChilkatHttp

Dim req As New ChilkatHttpRequest
req.AddParam "client_secret","CLIENT_SECRET"
req.AddParam "client_id","CLIENT_ID"

' See Understanding Scopes in Azure OAuth2 Client Credentials Flow
req.AddParam "scope","https://graph.microsoft.com/.default"

req.AddParam "grant_type","client_credentials"

' Note: Your Azure app must be registered as a single-tenant app to use client credentials.
' Use your own tenant ID, for example 4d8fdd66-66d1-43b0-ae5c-e31b4b7de5cd
Dim url As String
url = "https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token"
Dim resp As ChilkatHttpResponse
Set resp = http.PostUrlEncoded(url,req)
If (http.LastMethodSuccess <> 1) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim statusCode As Long
statusCode = resp.StatusCode
Debug.Print "Response status code = " & statusCode

Dim json As New ChilkatJsonObject
success = json.Load(resp.BodyStr)

json.EmitCompact = 0
Debug.Print json.Emit()

' Sample successful output:

' {
'   "token_type": "Bearer",
'   "expires_in": 3599,
'   "ext_expires_in": 3599,
'   "access_token": "eyJ0eX...K0jOERg"
' }

If (statusCode = 200) Then
    success = json.WriteFile("qa_data/tokens/azureClientCredentialsToken.json")
    Debug.Print "Success."
Else
    Debug.Print "Failed."
End If