lshift/diffa — pull request #230 by paulj (2012-07-20 01:19:07+00:00)
Title: Don't try to scan an endpoint that doesn't support scanning

This patch changes the scan initiation process so that no process is initiated to scan an endpoint that has a null or empty scan url. This should allow scans to be performed successfully in scenarios where only one part of the pair supports scanning - previously, this was likely to fail with an error indicating that the unsupporting endpoint couldn't be scanned.