(Visual Basic 6.0) 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.

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

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim success As Long
success = 0

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

Dim http As New ChilkatHttp

' 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 ChilkatBinData
success = bdRequestBody.LoadFile("your-file-path")
If (success <> 1) Then
    Debug.Print "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 ChilkatHttpResponse
success = http.HttpBd("POST","https://your-webapp-hostname:your-webapp-port/v1/media",bdRequestBody,"image/jpeg",resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim sbResponseBody As New ChilkatStringBuilder
success = resp.GetBodySb(sbResponseBody)
Dim jResp As New ChilkatJsonObject
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = 0

Debug.Print "Response Body:"
Debug.Print jResp.Emit()

Dim respStatusCode As Long
respStatusCode = resp.StatusCode
Debug.Print "Response Status Code = " & respStatusCode
If (respStatusCode >= 400) Then
    Debug.Print "Response Header:"
    Debug.Print resp.Header
    Debug.Print "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 Long
i = 0
Dim count_i As Long
count_i = jResp.SizeOfArray("messages")
Do While i < count_i
    jResp.I = i
    id = jResp.StringOf("messages[i].id")
    i = i + 1
Loop