"Input string was not in a correct format" and cancelled tasks using UploadMultiple

Question

Hi,

I am using UploadMultiple with concurrency enabled, but sometimes the transfers fail and when I check the exceptions for each transfers I see that a few transfers throw "Input string was not in a correct format.", another few throw "Transfer cancelled." and the rest throw "Task cancelled.". In one FTP server it happens almost every time, and in others it happens once in a while.

I would like to have more details of this behavior like:

- What can be causing the "Input string was not in a correct format."?

- Is the ftp component retrying before cancelling everything and failing? I am setting AutoRequeue = true and retryCount    = 3

- Can it be related to the number of concurrent connections? In one server it happens as soon as I set MaxConnections greater than 4, but according to the documentation the component is smart enough to use less connections if the server doesn't allow as many.

Thanks in advance!

Comments

I suggest trying to narrow down the problem by turning of concurrency first and seeing if you still get the errors.  Next, please enable logging at the debug level and see if there is any more useful information in the logs.