(VB.NET) AzureWebsites OAuth2 Password Flow

Demonstrates how to do OAuth 2.0 password flow for azurewebsites.net.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This example requires 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

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = "/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam("grant_type","password")
req.AddParam("username","your_username")
req.AddParam("password","your_password")

Dim tokenEndpoint As String = "https://your_api.azurewebsites.net/token"
Dim resp As Chilkat.HttpResponse = http.PostUrlEncoded(tokenEndpoint,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())

' Sample JSON response:

' {
'   "access_token": "NQGHn ... xTS",
'   "token_type": "bearer",
'   "expires_in": 1209599,
'   "userName": "your_username",
'   ".issued": "Mon, 27 Apr 2020 23:49:35 GMT",
'   ".expires": "Mon, 11 May 2020 23:49:35 GMT"
' }


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



' ----------------------------------
' Use the OAuth2 token in a request.
' For example...

Dim sbXml As New Chilkat.StringBuilder
success = sbXml.LoadFile("c:/someDir/someXmlFile.xml","utf-8")
If (success = False) Then
    Debug.WriteLine("Failed to load the XML file.")
    Exit Sub
End If


' Get the OAuth2 token and use it for authentication
http.AuthToken = jResp.StringOf("token")

Dim destUrl As String = "https://your_api.azurewebsites.net/destinationUrl"
resp = http.PostXml(destUrl,sbXml.GetAsString(),"utf-8")
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


respStatusCode = 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


' Examine the response body
Debug.WriteLine(resp.BodyStr)