I am using WINSCP .NET assembly to upload files via SFTP. On uploading any files larger than 100kb, getting error messages "filepart' could not be renamed to target file name, you may try to turn off transfer resume support.". In the .NET source code I added following code to disable the settings:

sessionOptions.AddRawSettings("ResumeSupport", "2")
sessionOptions.AddRawSettings("IgnorePermErrors", "1")
sessionOptions.AddRawSettings("PreserveTime", "0")

But still I am getting the same error message. While uploading it though GUI, I am not facing any issues, but using .NET assembly. I am not able to upload large files.

Thanks for your post.

This issue is being tracked here:
https://winscp.net/tracker/show_bug.cgi?id=834

See hint at:
https://winscp.net/forum/viewtopic.php?t=11460
_________________
Martin Prikryl

I have downloaded 5.1.3 version of WINSCP.DLL to work with .NET. Use following code to ignore the error messages "filepart' could not be renamed to target file name. We don't have rename permission to the destination SFTP folder.
With sessionOptions
.Protocol = Protocol.Sftp
.HostName = FTPAddr
.UserName = FtpUserId
.Password = FTPPassword
.PortNumber = FTPPort
.SshHostKeyFingerprint = sshHostKey
.AddRawSettings("ResumeSupport", "2")
.AddRawSettings("IgnorePermErrors", "1")
.AddRawSettings("PreserveTime", "0")
End With
Let me know, if this issue is fixed already with 5.1.3 version ?

Thank you.

It's not. Will be fixed in 5.2, as per the tracker entry above.

Any idea on the release date of 5.2

Any idea on the release date of 5.2 or beta release? Or, a way to get around the Resume Support using the .Net assembly, Or, even a trial piece of CPP to allow local builds to resolve?
Product is still awesome!!!

I can provide you development version for testing. Can you send me an email? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.

You will find my address (if you log in) in my forum profile.

I'm also in need of the #834 bug fix; is there anyway I can get a copy?

See my answer above.

email sent, thanks!

I just downloaded version 5.2 and I am still seeing the same issue .File could not be renamed..
Am I disabling the resume support correctly ?

SessionOptions sessionOptions = new SessionOptions()
{
Protocol = Protocol.Sftp,
HostName = ConfigurationManager.AppSettings["sftp.host"],
UserName = ConfigurationManager.AppSettings["sftp.userName"],
Password = ConfigurationManager.AppSettings["sftp.password"],
SshHostKeyFingerprint = ConfigurationManager.AppSettings["sftp.SshHostKeyFingerprint"],
};

sessionOptions.AddRawSettings("ResumeSupport", "2");
sessionOptions.AddRawSettings("IgnorePermErrors", "1");
sessionOptions.AddRawSettings("PreserveTime", "0");

Thanks
Henry

No you are not.
Use TransferOptions.ResumeSupport = TransferResumeSupport.Off
https://winscp.net/eng/docs/library_transferoptions

Last edited by martin on 2014-04-14; edited 1 time in total

Hi, I've just tried this I'm getting a message that the ResumeSupport property is readonly. Can you help? Full code:

Dim sftp As New SessionOptions
Dim session As New Session
Dim transfer As New TransferOptions
Dim result As TransferOperationResult

With sftp
.Protocol = Protocol.Sftp
.HostName = "***"
.UserName = "***"
.Password = "***"
.SshHostKeyFingerprint = "***"
End With

session.Open(sftp)
transfer.ResumeSupport = TransferResumeSupport.Off [property is readonly]
transfer.TransferMode = TransferMode.Binary
result = session.PutFiles("C:\xx.csv", "xx.csv", False, transfer)
result.Check()

Thank you.

Don.t worry, fixed it myself:

transfer.ResumeSupport.State = TransferResumeSupportState.Off