Xojo Plugin

Download a Binary File into Memory

See more Azure Cloud Storage Examples

Downloads a binary file into memory. Xojo Plugin

Dim success As Boolean
success = False

// Azure File Service Example: Download a Binary File to Memory
// See:  https://docs.microsoft.com/en-us/rest/api/storageservices/get-file

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

Dim rest As New Chilkat.Rest

// Connect to the Azure Storage Blob Service
Dim bTls As Boolean
bTls = True
Dim port As Int32
port = 443
Dim bAutoReconnect As Boolean
bAutoReconnect = True
// In this example, the storage account name is "chilkat".
success = rest.Connect("chilkat.file.core.windows.net",port,bTls,bAutoReconnect)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

// Provide Azure Cloud credentials for the REST calls.
Dim azAuth As New 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 = "File"
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion = "2021-08-06"
success = rest.SetAuthAzureStorage(azAuth)

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

// Send a GET request to download the file "penguins.jpg" to a BinData object.
// (The share name is "pip")
Dim bdFileContents As New Chilkat.BinData
success = rest.FullRequestNoBodyBd("GET","/pip/wildlife/antarctic/penguins.jpg",bdFileContents)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

// When successful, the response status will be 200.
// If a non-success status code is returned, then the bdFileContents actually contains the XML error message.
If (rest.ResponseStatusCode <> 200) Then
    // Examine the request/response to see what happened.
    System.DebugLog("response status code = " + Str(rest.ResponseStatusCode))
    System.DebugLog("response status text = " + rest.ResponseStatusText)
    System.DebugLog("response header: " + rest.ResponseHeader)
    Dim sbXmlErr As New Chilkat.StringBuilder
    success = sbXmlErr.AppendBd(bdFileContents,"utf-8",0,0)
    System.DebugLog("response body (if any): " + sbXmlErr.GetAsString())
    System.DebugLog("---")
    System.DebugLog("LastRequestStartLine: " + rest.LastRequestStartLine)
    System.DebugLog("LastRequestHeader: " + rest.LastRequestHeader)
    Return
End If

System.DebugLog("Size of the downloaded file = " + Str(bdFileContents.NumBytes))

// See the online reference documentation for the BinData class for ways
// to access the bytes.

success = bdFileContents.WriteFile("qa_output/penguins.jpg")