VB.NET Requires Chilkat v11.0.0+

WhatsApp - Upload Media

Demonstrates how to upload media to the WhatsApp Business API client. The POST body must contain the binary media data and the Content-Type header must be set to the type of the media being uploaded. VB.NET

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/media \
'  -H 'Authorization: Bearer your-auth-token' \ 
'  -H 'Content-Type: image/jpeg'
'  --data-binary @your-file-path

'  Use the following online tool to generate HTTP code from a CURL command
'  Convert a cURL Command to HTTP Source Code

Dim bdRequestBody As New Chilkat.BinData
success = bdRequestBody.LoadFile("your-file-path")
If (success <> True) Then
    Debug.WriteLine("Failed to load your-file-path")
    Exit Sub
End If


'  Adds the "Authorization: Bearer your-auth-token" header.
http.AuthToken = "your-auth-token"

Dim resp As New Chilkat.HttpResponse
success = http.HttpBd("POST","https://your-webapp-hostname:your-webapp-port/v1/media",bdRequestBody,"image/jpeg",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)

'  {
'    "messages": [
'      {
'        "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
'      }
'    ]
'  }

'  Sample code for parsing the JSON response...
'  Use the following online tool to generate parsing code from sample JSON:
'  Generate Parsing Code from JSON



Dim id As String

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