Xojo Plugin

Configure AWS Signature Authentication for REST

Demonstrates Rest.SetAuthAws, which associates an AuthAws provider so Chilkat signs each request using AWS Signature Version 4. The provider supplies the access key, secret key, region, and service name.

Background. AWS requires each request to be signed with a signature derived from the secret key, region, service, and request contents. Configuring the provider lets Chilkat compute and attach the signature automatically.

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Dim success As Boolean
success = False

Dim rest As New Chilkat.Rest
Dim bTls As Boolean
bTls = True
Dim bAutoReconnect As Boolean
bAutoReconnect = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  Configure AWS Signature Version 4 request signing.  Provide the access key, secret key, region,
//  and service name.
Dim authAws As New Chilkat.AuthAws
//  Normally you would not hard-code secrets in source.  You should instead obtain them from an
//  interactive prompt, environment variable, or a secrets vault.
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.Region = "us-east-1"
authAws.ServiceName = "s3"

//  Associate the provider so Chilkat signs each request according to AWS requirements.
success = rest.SetAuthAws(authAws)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

Dim responseText As String
responseText = rest.FullRequestNoBody("GET","/")
If (rest.LastMethodSuccess = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

System.DebugLog(responseText)