Visual Basic 6.0

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.

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Visual Basic 6.0

Dim success As Long
success = 0

Dim rest As New ChilkatRest
Dim bTls As Long
bTls = 1
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = 0) Then
    Debug.Print 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 ChilkatAuthAzureSAS
'  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 = 0) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim responseText As String
responseText = rest.FullRequestNoBody("GET","/mycontainer/myblob.txt")
If (rest.LastMethodSuccess = 0) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Debug.Print responseText