(Excel) 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.

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

Dim rest As Chilkat.Rest
Set rest = Chilkat.NewRest

' Connect to the Azure Storage Blob Service

bTls = True

port = 443

bAutoReconnect = True
' In this example, the storage account name is "chilkat".

success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
If (success <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' Provide Azure Cloud credentials for the REST call.
Dim azAuth As Chilkat.AuthAzureStorage
Set azAuth = Chilkat.NewAuthAzureStorage
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: 2020-08-04" header to be automatically added.
azAuth.XMsVersion = "2020-08-04"
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.

Dim fileStream As Chilkat.Stream
Set fileStream = Chilkat.NewStream
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 <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
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
    Debug.Print "File uploaded."
Else
    ' Examine the request/response to see what happened.
    Debug.Print "response status code = "; rest.ResponseStatusCode
    Debug.Print "response status text = "; rest.ResponseStatusText
    Debug.Print "response header: "; rest.ResponseHeader
    Debug.Print "response body (if any): "; responseStr
    Debug.Print "---"
    Debug.Print "LastRequestStartLine: "; rest.LastRequestStartLine
    Debug.Print "LastRequestHeader: "; rest.LastRequestHeader
End If