(PowerShell) Adding x-ms-range header to Azure Blob Download

See more Azure Cloud Storage Examples

Demonstrates how to add an x-ms-range header to an Azure blob download.

For more information, see https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$rest = New-Object Chilkat.Rest

# 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 -ne $true) {
    $($rest.LastErrorText)
    exit
}

# Provide Azure Cloud credentials for the REST call.
$azAuth = New-Object 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: 2020-08-04" header to be automatically added.
$azAuth.XMsVersion = "2020-08-04"
$success = $rest.SetAuthAzureStorage($azAuth)

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

# Add the x-ms-range header.
# See x-ms-range Header Format
# The file we're downloading contains "Hello World!", so we'll download just the "World!" part..
$rest.AddHeader("x-ms-range","bytes=6-")

# The Azure blob container is "test", the file is "helloWorld.txt"
$sb = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestNoBodySb("GET","/test/helloWorld.txt",$sb)
if ($success -eq $false) {
    # Examine the request/response to see what happened.
    $("response status code = " + $rest.ResponseStatusCode)
    $("response status text = " + $rest.ResponseStatusText)
    $("response header: " + $rest.ResponseHeader)
    $("---")
    $("LastRequestStartLine: " + $rest.LastRequestStartLine)
    $("LastRequestHeader: " + $rest.LastRequestHeader)
    exit
}

$($sb.GetAsString())

$("Success.")