(VBScript) Facebook Upload Photo from Local File

Uploads a new photo with a caption from a local file.

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

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

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

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Http")
set http = CreateObject("Chilkat.Http")

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.HttpRequest")
set req = CreateObject("Chilkat.HttpRequest")
req.HttpVerb = "POST"
req.ContentType = "multipart/form-data"
req.Path = "/v2.7/me/photos"

' Use the previously obtained access token.
' Note: The publish_actions scope is required to upload a photo.
req.AddHeader "Authorization","Bearer FACEBOOK-ACCESS-TOKEN"

' Send an "Expect: 100-continue" header in the request.
' This causes the HTTP server to end a 100-continue response
' immediately after receiving the HTTP header.  The client
' (Chilkat) will receive this intermediate response, and if
' it's not an error response, it knows that the HTTP server will
' accept the data that is forthcoming.
' The alternative is to get an error response after trying to upload
' the entire contents of the files.
req.AddHeader "Expect","100-continue"

' Set a photo caption.
req.AddParam "caption","Here are some penguins!"

' Additional parameters can be added to the request by 
' calling AddParam once per parameter.  
' See https://developers.facebook.com/docs/graph-api/reference/user/photos
' for more information about other optional parameters.

' Indicate the local file to be uploaded.
success = req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
If (success <> 1) Then
    outFile.WriteLine(req.LastErrorText)
    WScript.Quit
End If

' Upload the image file..
' resp is a Chilkat.HttpResponse
Set resp = http.SynchronousRequest("graph.facebook.com",443,1,req)
If (http.LastMethodSuccess <> 1) Then
    outFile.WriteLine(http.LastErrorText)
    WScript.Quit
End If

' Examine the response body:
responseJson = resp.BodyStr
outFile.WriteLine(responseJson)

' The response contains JSON, such as this:
' {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}


outFile.Close