Hi Oleg,
That sounds reasonable. The only thing I am still not 100% sure about OperationTimeout is if this applies to for instance a complete file download in SftpClient, i.e. if you specify 30s for OperationTimeout and you do a DownloadFile then the file has to complete the entire download in 30s. After doing a simple test this does not seem to be the case. What timeout is in affect during the actual download of the file? Is the timeout reset after each packet received from the server until the entire file is downloaded, e.g. timeout exception will occur if no data is received for 30s from server during a file download?
Beyers