AutoDetect should get a file listing to check if it works

[robinrodricks]

AutoDetect can sometimes return a wrong profile. This can only be solved by getting a file listing. If it disconnects or returns a blank listing for the root folder then the connection must be determined to have failed.

[robinrodricks]

Added to the bucket list. We will pick this up as and when we have free time. Comment on this issue if you want us to prioritize it. Thanks!