VB.NET

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

Chilkat VB.NET Downloads

Download Chilkat for VB.NET

VB.NET

Dim success As Boolean = False

Dim rest As New Chilkat.Rest
Dim bTls As Boolean = True
Dim bAutoReconnect As Boolean = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
'  and the SAS token query parameters; Chilkat adds the SAS token to each request.
Dim azSas As New Chilkat.AuthAzureSAS
'  Normally you would not hard-code secrets in source.  You should instead obtain them from an
'  interactive prompt, environment variable, or a secrets vault.
azSas.AccessKey = "BASE64_ACCOUNT_ACCESS_KEY"

'  Associate the provider with the REST object.
success = rest.SetAuthAzureSas(azSas)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


Dim responseText As String = rest.FullRequestNoBody("GET","/mycontainer/myblob.txt")
If (rest.LastMethodSuccess = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(responseText)