(VB.NET) WhatsApp - Login

Log in to get your authentication token (which is to be used in the "Authorization: Bearer your-auth-token" header in other REST API calls).

Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://developers.facebook.com/docs/whatsapp/api/users/login

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

Dim success As Boolean = False

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

Dim http As New Chilkat.Http

' Implements the following CURL command:

' curl -X POST https://your-webapp-hostname:your-webapp-port/v1/users/login \
'   -H 'Content-Type: application/json' \
'   --user 'username:password' \
'   -d '{}'

http.Login = "username"
http.Password = "password"

' The following JSON is sent in the request body.

' {}

Dim json As New Chilkat.JsonObject

Dim resp As New Chilkat.HttpResponse
success = http.HttpJson("POST","https://your-webapp-hostname:your-webapp-port/v1/users/login",json,"application/json",resp)
If (success = 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)

' {
'   "users": [
'     {
'       "token": "eyJhbGciOHlXVCJ9.eyJ1c2VyIjoNTIzMDE2Nn0.mEoF0COaO00Z1cANo",
'       "expires_after": "2018-03-01 15:29:26+00:00"
'     }
'   ]
' }

' Sample code for parsing the JSON response...



Dim token As String
Dim expires_after As String

Dim i As Integer = 0
Dim count_i As Integer = jResp.SizeOfArray("users")
While i < count_i
    jResp.I = i
    token = jResp.StringOf("users[i].token")
    expires_after = jResp.StringOf("users[i].expires_after")
    i = i + 1
End While