(VB.NET UWP/WinRT) WhatsApp - First Login

Log in the very first time to get your authentication token. The new login/password is passed in the JSON body of the request.

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

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 -k -X POST https://your-webapp-hostname:your-webapp-port/v1/users/login \
'   -H 'Content-Type: application/json' \
'   --user 'admin:secret' \
'   -d '{"new_password" : "new-password"}'

http.Login = "admin"
http.Password = "secret"


' The following JSON is sent in the request body.

' {
'   "new_password": "new-password"
' }

Dim json As New Chilkat.JsonObject
json.UpdateString("new_password","new-password")

http.SetRequestHeader("Content-Type","application/json")

Dim resp As Chilkat.HttpResponse = Await http.PostJson3Async("https://your-webapp-hostname:your-webapp-port/v1/users/login","application/json",json)
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)

' {
'   "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