(Visual Basic 6.0) Initiate Resumable Upload Session

See more Google Cloud Storage Examples

Initiate a Google Cloud Storage resumable upload session..

For more information, see https://cloud.google.com/storage/docs/performing-resumable-uploads

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

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

Dim http As New ChilkatHttp

Dim jsonToken As New ChilkatJsonObject
Dim success As Long
success = jsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json")
If (success = 0) Then
    Debug.Print jsonToken.LastErrorText
    Exit Sub
End If

Dim jsonMetaData As New ChilkatJsonObject
success = jsonMetaData.UpdateString("contentType","image/jpeg")

' Adds the "Authorization: Bearer <access_token>" header..
http.AuthToken = jsonToken.StringOf("access_token")

success = http.SetUrlVar("bucket_name","chilkat-bucket-b")
success = http.SetUrlVar("object_name","penguins2.jpg")
Dim url As String
url = "https://storage.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=resumable&name={$object_name}"
Dim resp As ChilkatHttpResponse
Set resp = http.PText("POST",url,jsonMetaData.Emit(),"utf-8","application/json",0,0)
If (http.LastMethodSuccess = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim statusCode As Long
statusCode = resp.StatusCode
Debug.Print "response status code = " & statusCode

Dim sessionUrl As String
sessionUrl = ""

If (statusCode <> 200) Then
    Debug.Print resp.BodyStr
Else
    ' The session URL will be used to upload the file in chunks, in subsequent HTTP POSTs...
    sessionUrl = resp.GetHeaderField("Location")
    Debug.Print "Session URL = " & sessionUrl
End If