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| 2016-09-06 | 2016-11-21 | ||
| library_example_keep_local_directory_up_to_date (martin) | using ps> interwiki link (martin) | ||
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| ====== Watching for changes in SFTP/FTP server ====== | ====== Watching for changes in SFTP/FTP server ====== | ||
| - | Neither SFTP nor FTP protocol have any mechanism to notify a client about changes in a remote folder. The only solution to detect changes is to periodically enumerate remote directory tree and find differences. It's easy to implement with use of ''[[library_session_enumerateremotefiles|Session.EnumerateRemoteFiles]]'' method and ''[[https://technet.microsoft.com/en-us/library/hh849941.aspx|Compare-Object]]'' cmdlet in PowerShell or ''[[msdn>system.linq.enumerable.except|Enumerable.Except]]'' LINQ method in C#/%%VB.NET%%. | + | Neither SFTP nor FTP protocol have any mechanism to notify a client about changes in a remote folder. The only solution to detect changes is to periodically enumerate remote directory tree and find differences. It's easy to implement with use of ''[[library_session_enumerateremotefiles|Session.EnumerateRemoteFiles]]'' method and ''[[ps>microsoft.powershell.utility/compare-object|Compare-Object]]'' cmdlet in PowerShell or ''[[msdn>system.linq.enumerable.except|Enumerable.Except]]'' LINQ method in C#/%%VB.NET%%. |
| //Note that, if you want to download the changes, you do not need to check for changes yourself, just run ''[[library_session_synchronizedirectories|Session.SynchronizeDirectories]]'' in a loop. You can use the [[library_example_keep_local_directory_up_to_date|Keep local directory up to date]] extension.// | //Note that, if you want to download the changes, you do not need to check for changes yourself, just run ''[[library_session_synchronizedirectories|Session.SynchronizeDirectories]]'' in a loop. You can use the [[library_example_keep_local_directory_up_to_date|Keep local directory up to date]] extension.// | ||