(VB.NET) MyInvois Malaysia Login as Intermediary System

See more Malaysia MyInvois Examples

Demonstrates how to get an OAuth2 access token with an intermediary that is representing a taxpayer (acting on behalf of a specific taxpayer). The OAuth2 access token can then be used to access MyInvois protected APIs.

For more information, see https://sdk.myinvois.hasil.gov.my/api/08-login-as-intermediary-system/

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.


' Sends the following HTTP POST to get a MyInvois OAUth2 access token using client_credentials

' POST /connect/token HTTP/1.1
' Host: preprod-api.myinvois.hasil.gov.my
' Accept: */*
' Content-Length: <<variable>>
' Content-Type: application/x-www-form-urlencoded
' 
' client_id={YOUR_CLIENT_ID}&client_secret={YOUR_CLIENT_SECRET}&grant_type=client_credentials&scope=InvoicingAPI


' --------------------------------------------------------------------------------------------------------
' Note: There is a large amount of information about the MyInvois API on the Internet.
' The information is found at https://sdk.myinvois.hasil.gov.my/
' and also at many other companies offering solutions.
' 
' Unfortunately, it's all completely useless to the programmer wishing to implement the API.
' The reason it's useless is because no specifics are given.
' A developer needs to know the specific details of the HTTP request and response.
' What is the HTTP request Content-Type?
' What is the endpoint?
' What is the format of request body and response?  JSON or XML?
' What specific header fields are needed, if any?
' 
' Providing samples of raw HTTP requests and responses tells the developer everything he/she needs to know.
' All unknowns become known.  
' Everything becomes easy to implement.
' Just show some sample raw HTTP requests and responses, and we can all spend far less time in the office
' and more time relaxing on a beach.

Dim http As New Chilkat.Http

Dim req As New Chilkat.HttpRequest
req.AddParam("grant_type","client_credentials")
req.AddParam("client_id","YOUR_CLIENT_ID")
req.AddParam("client_secret","YOUR_CLIENT_SECRET")
req.AddParam("scope","InvoicingAPI")

Dim resp As Chilkat.HttpResponse = http.PostUrlEncoded("https://preprod-api.myinvois.hasil.gov.my/connect/token",req)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' Note: The returned access token is valid for a short amount of time.  Perhaps 1 hour.
' The access token is used in the "Authorization: Bearer <access_token>" header in subsequent requests until it expires.
' Your application would then need to get a new access token, and so on..

Debug.WriteLine("Response Status Code: " & resp.StatusCode)
Debug.WriteLine("Response Body:")
Debug.WriteLine(resp.BodyStr)

' Here's a sample response:

' {
'   "access_token": "eyJhbGciOiJSUzI1...",
'   "expires_in": 3600,
'   "token_type": "Bearer",
'   "scope": "InvoicingAPI"
' }

Dim json As New Chilkat.JsonObject
json.Load(resp.BodyStr)
Dim access_token As String = json.StringOf("access_token")
Dim expires_in As Integer = json.IntOf("expires_in")
Dim token_type As String = json.StringOf("token_type")
Dim scope As String = json.StringOf("scope")



' To use an access token in a MyInvois API call, see Using a MyInvois Access Token in an API Request