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Azure Storage: CORS Preflight Blob Request

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Azure Storage Blob Service REST API: Sample code to send a CORS pre-flight blob request. AutoIt

Local $bSuccess = False

; Azure Blob Service Example: CORS Preflight Blob Request
; See also: https://msdn.microsoft.com/en-us/library/azure/dn535599.aspx

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

$oRest = ObjCreate("Chilkat.Rest")

; Connect to the Azure Storage Blob Service
Local $bTls = True
Local $iPort = 443
Local $bAutoReconnect = True
; In this example, the storage account name is "chilkat".
$bSuccess = $oRest.Connect("chilkat.blob.core.windows.net",$iPort,$bTls,$bAutoReconnect)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; Provide Azure Cloud credentials for the REST call.
$oAzAuth = ObjCreate("Chilkat.AuthAzureStorage")
$oAzAuth.AccessKey = "AZURE_ACCESS_KEY"
; The account name used here should match the 1st part of the domain passed in the call to Connect (above).
$oAzAuth.Account = "chilkat"
$oAzAuth.Scheme = "SharedKey"
$oAzAuth.Service = "Blob"
; This causes the "x-ms-version: 2021-08-06" header to be automatically added.
$oAzAuth.XMsVersion = "2021-08-06"
$bSuccess = $oRest.SetAuthAzureStorage($oAzAuth)

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

; The preflight blob request requires the following two HTTP headers.
; The Origin is the domain from which the actual request will be issued.
$bSuccess = $oRest.AddHeader("Origin","www.contoso.com")
; The Access-Control-Request-Method is the HTTP method (such as GET, POST, PUT, etc.) of the actual request.
$bSuccess = $oRest.AddHeader("Access-Control-Request-Method","PUT")

; The expected response is a 202 response status code with no response body.
; The name of the container or blob resource in this example is "test". (Replace "test" with your container name.)
Local $sResponseStr = $oRest.FullRequestNoBody("OPTIONS","/test")
If ($oRest.LastMethodSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; When successful, the Azure Storage service will respond with a 200 response code,
; with no response body.

; If CORS is not enabled or no matching rule is found for the request, 
; then a 403 status code is returned, with the following status text:
; "CORS not enabled or no matching rule found for this request."
If ($oRest.ResponseStatusCode <> 200) Then
    ; Examine the request/response to see what happened.
    ConsoleWrite("response status code = " & $oRest.ResponseStatusCode & @CRLF)
    ConsoleWrite("response status text = " & $oRest.ResponseStatusText & @CRLF)
    ConsoleWrite("response header: " & $oRest.ResponseHeader & @CRLF)
    ConsoleWrite("response body (if any): " & $sResponseStr & @CRLF)
    ConsoleWrite("---" & @CRLF)
    ConsoleWrite("LastRequestStartLine: " & $oRest.LastRequestStartLine & @CRLF)
    ConsoleWrite("LastRequestHeader: " & $oRest.LastRequestHeader & @CRLF)
    Exit
EndIf

ConsoleWrite("Success: Preflight Blob Request is accepted." & @CRLF)