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Dropbox API Error on Upload: Incorrect offset
hello, I have written an app with which you can upload all kinds of files into a dropbox folder. I have already spent several hours trying to fix the error on my own, but I can not find a solution...
Hi, could you solve the problem?
Greg-DB
Dropbox Community Moderator
Dropbox Community ModeratorIt seems I missed this thread back in May (apologies!), but in general an 'incorrect_offset' error happens when the app calls one of the append or finish upload session endpoints (or corresponding native methods in an SDK) with an "offset" value that does not match how much has actually been uploaded so far for that upload session.
For example, this can happen due to a bug in the app's code, or if there is a network issue that stops the API response from reaching the app, so it doesn't know if that piece of the upload session was successful.
In any case, the app should read the returned 'correct_offset' value and resume uploading from that point in the file.
Thank you,
Just asking, because I could solve it with the code here.Private Async Function ChunkUpload(Ipath As String, stream As IO.FileStream, chunkSize As Integer) As Task
Dim numChunks As Integer = Int(Math.Ceiling(stream.Length / chunkSize))
Dim buffer() As Byte = New Byte(chunkSize) {}
Dim II As String = DBLocation.Remove(0, DBLocation.LastIndexOf("\") + 1)
''ant
''Dim sessionId As String = String.Empty
''new
Dim sessionId As String = Nothing
Cursor = Cursors.WaitCursor''For idx As Integer = 0 To chunkSize - 1
''new
For idx As Integer = 0 To numChunks - 1 Step 1
''idx += 1
Dim byteRead = stream.Read(buffer, 0, chunkSize)
''Dim memstream = New IO.MemoryStream(buffer, 0, byteRead)
''new
Dim memstream As MemoryStream = New MemoryStream(buffer, 0, byteRead)
If idx = 0 Then
''Dim result = Await DBX.Files.UploadSessionStartAsync(False, memstream)
''new
Dim result = Await DBX.Files.UploadSessionStartAsync(body:=memstream)
sessionId = result.SessionId
Else
Dim cursor As UploadSessionCursor = New UploadSessionCursor(sessionId, CLng(chunkSize * idx))
If idx = numChunks - 1 Then
''Await DBX.Files.UploadSessionFinishAsync(cursor, New CommitInfo(Ipath), memstream)
Await DBX.Files.UploadSessionFinishAsync(cursor, New CommitInfo(Ipath + "/" + II), memstream)Else
''Await DBX.Files.UploadSessionAppendV2Async(cursor, False, memstream)
''new
Await DBX.Files.UploadSessionAppendV2Async(cursor, False, body:=memstream)End If
End If
Next
End Function
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