Android Question sync files from FTP

[peacemaker]

HI, All
Who works with FTP servers, please help.

If i need to sync files from FTP - i have to compare only file size or time.
File size is OK, but .... not "true way"

Time: FTPEntry object from NET lib has "Timestamp", downloaded file has File.LastModified time.

Is Timestamp the time of saving moment that FTP server provides ?
LastMobified - is it always the same - on FTP or after downloading the file ? Or also Android system updates it when file is saved into a folder ?

FTP servers has different time zones.... If i log these 2 Long digits - server's digit is always bigger than my local LastModified.
How to sync files, to download only new version (latest by time) of each file ?

 

[Erel]

The TimeStamp value comes from the server.

Don't use LastModified at all. You should instead save the list with files and time stamps received from the server and only use this value to synchronize.

 

[peacemaker]

Yes, thanks. But i cannot save it well :-(

Sub Process_Globals
    PrevFiles() As FTPEntry
End Sub

Sub Save_FTPentries
Dim raf As RandomAccessFile
raf.Initialize(File.DirInternal, "ftp_entries.raf", False)
raf.WriteObject(PrevFiles, False, 0)
raf.Close
End Sub

Sub Restore_FTPentries
Dim raf As RandomAccessFile
raf.Initialize(File.DirInternal, "ftp_entries.raf", False)
Try
    PrevFiles = raf.ReadObject(0)    ' HERE is ALWAYS ARRAY with NULL items
Catch
    Log("Restore_FTPentries.error")
End Try
raf.Close
End Sub

 

[peacemaker]

Erel, is it possible to update FTPEntry ? Make it with setter also, not only read-only.
If to update NET-lib, i guess, - it won't influence on projects, as always are read-only now

 

[Erel]

Create a custom type and use it instead of FTPEntry. It will allow you to save the data with WriteB4XObject and it will also allow you to set the values.