(VBScript) REST File Streaming Upload

Demonstrates how to stream the REST body from a file. This example demonstrates a REST upload to the Azure Cloud Storage service.

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 requires the Chilkat API 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.Rest")
set rest = CreateObject("Chilkat.Rest")

' Connect to the Azure Storage Blob Service
bTls = 1
port = 443
bAutoReconnect = 1
' In this example, the storage account name is "chilkat".
success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

' Provide Azure Cloud credentials for the REST call.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.AuthAzureStorage")
set azAuth = CreateObject("Chilkat.AuthAzureStorage")
azAuth.AccessKey = "AZURE_ACCESS_KEY"
' The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = "chilkat"
azAuth.Scheme = "SharedKey"
azAuth.Service = "Blob"
' This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion = "2021-08-06"
success = rest.SetAuthAzureStorage(azAuth)

' Set some request headers.
success = rest.AddHeader("x-ms-blob-content-disposition","attachment; filename=""hamlet.xml""")
success = rest.AddHeader("x-ms-blob-type","BlockBlob")
success = rest.AddHeader("x-ms-meta-m1","v1")
success = rest.AddHeader("x-ms-meta-m2","v2")

' Note: The application does not need to explicitly set the following
' headers: x-ms-date, Authorization, and Content-Length.  These headers
' are automatically set by Chilkat.

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Stream")
set fileStream = CreateObject("Chilkat.Stream")
fileStream.SourceFile = "qa_data/xml/hamlet.xml"

' Upload to the Azure Cloud Storage service.
' The file is streamed, so the full file never has to completely reside in memory.
' The file is uploaded to the container named "test".
responseStr = rest.FullRequestStream("PUT","/test/hamlet.xml",fileStream)
If (rest.LastMethodSuccess <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

' When successful, the Azure Storage service will respond with a 201 response code,
' with an empty body.  Therefore, in the success condition, the responseStr is empty.
If (rest.ResponseStatusCode = 201) Then
    outFile.WriteLine("File uploaded.")
Else
    ' Examine the request/response to see what happened.
    outFile.WriteLine("response status code = " & rest.ResponseStatusCode)
    outFile.WriteLine("response status text = " & rest.ResponseStatusText)
    outFile.WriteLine("response header: " & rest.ResponseHeader)
    outFile.WriteLine("response body (if any): " & responseStr)
    outFile.WriteLine("---")
    outFile.WriteLine("LastRequestStartLine: " & rest.LastRequestStartLine)
    outFile.WriteLine("LastRequestHeader: " & rest.LastRequestHeader)
End If


outFile.Close