Random images upload corrupt on larger batches

gtordjman

When uploading small png files 100KB or less some randomly get corrupted. This was not always a problem and seemes to have croppted up but none of the code was ever changed.

 

Public Async Function DropboxUpload(ByVal sql As String) As Task
Dim conn As New System.Data.SqlClient.SqlConnection(PrintQueue.ConnectionString)
Dim adpt As New System.Data.SqlClient.SqlDataAdapter(sql, conn)
Dim dt As New DataTable()
adpt.Fill(dt)
Using dbx As New DropboxClient("xxx")
Dim i As Integer
For i = 0 To dt.Rows.Count - 1

Using mem As New FileStream("\\r2d2.agslab.local\Prod_Data\RaytracerImages\ASET\final\s" & dt.Rows(i).Item("lngstoneid").ToString & ".png", FileMode.Open, FileAccess.Read)
Dim updated = Await dbx.Files.UploadAsync("/" & dt.Rows(i).Item("lngstoneid").ToString & ".png", Dropbox.Api.Files.WriteMode.Overwrite.Instance, body:=mem)
End Using
 
Next
End Using
dt.Dispose()
adpt.Dispose()
conn.Close()
conn.Dispose()
End Function

 

Greg-DB

Thanks for the report! We'll be happy to look into this, but we could use some more information to help us reproduce this. Can you please share:

- a sample original file (before being corrupted)
- the output of some additional logging showing the correct contents in the mem object before upload (e.g., a hash)
- the output of the API call for a corrupted file upload
- a sample corrupted file

Thanks in advance!