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[quote="marnold316"]Martin, thank you for the quick response.

I added the AddRaw SendBuf 0 and it didn't change the result. Filepart is still 0 bytes on the server. I have attached the log files. I have about four other clients uploading to the same server without issue. I have other SFTP servers where your component works perfect with multiple clients connecting.

Here is the code I am using:
[code]@csharp@
SessionOptions sessionOptions = new SessionOptions
{
    Protocol = ftpType.Equals("sftp", StringComparison.OrdinalIgnoreCase) ? Protocol.Sftp : Protocol.Ftp,
    HostName = ftpHost,
    UserName = ftpUsername,
    Password = ftpPassword,
    Timeout = new TimeSpan(0, 0, 120)
};

if(ftpType == "ftp")
{
    sessionOptions.FtpSecure = FtpSecure.Implicit;
}

if(port != 0)
{
    sessionOptions.PortNumber = port;
}
sessionOptions.AddRawSettings("SendBuf","0");

if(ftpType.Equals("sftp", StringComparison.OrdinalIgnoreCase))
{
    sessionOptions.SshHostKeyFingerprint = sshKey;
}

TransferOperationResult transferResult;

using (Session session = new Session())
{
    if(FileTransferredEventHandler != null)
    {
        session.FileTransferred += FileTransferredEventHandler;
    }
    session.XmlLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_XMLLog.xml");
    log.InfoFormat("WINSCP XML Log Path= " + session.XmlLogPath);
    session.Timeout = new TimeSpan(0, 0, 130);
    // session.ReconnectTime = new TimeSpan(0, 0, 140);
    // Connect
    session.SessionLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_SessionLog.log");
    log.InfoFormat("WINSCP Session Log Path= " + session.SessionLogPath);
    session.DebugLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_DebugLog.log");
    log.InfoFormat("WINSCP Debug Log Path= " + session.DebugLogPath);
    session.DebugLogLevel = 2;
    // Connect
    session.Open(sessionOptions);

// Upload files
    TransferOptions transferOptions = new TransferOptions();
    transferOptions.TransferMode = WinSCP.TransferMode.Binary;
    transferOptions.OverwriteMode = OverwriteMode.Overwrite;
    
    transferResult = session.PutFiles(string.Format("{0}\\*", dir), string.Format("{0}/", (String.IsNullOrWhiteSpace(remoteDirectory) ? "" : "/" + remoteDirectory)), true, transferOptions);
}

return transferResult.Transfers.Count;
[/code][/quote]

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Topic review

marnold316

Strangely its working now

2022-09-01 18:29

Martin,

I went back to do the test you requested and strangely everything is uploading now. I will monitor over the next week and let you know if I run into any issues. Thanks!

martin

Re: Still 0 byte filesize on filepart

2022-09-01

So please post the GUI log for comparison.

marnold316

Still 0 byte filesize on filepart

2022-08-29 17:44

I made the code change as requested and I am still getting a 0 byte filesize on filepart and the transfer never completes. As an FYI, I can transfer files just fine using the GUI app, just not thru the .NET library.

I left the previous settings change recommendation in the code:

sessionOptions.AddRawSettings("SendBuf","0");
sessionOptions.AddRawSettings("SFTPMaxPacketSize", "32768");

Thanks for your help Martin!

martin

Re: I tried the settings change recommended in the article and I still got filepart of 0 bytes on server

2022-08-29

Try:

sessionOptions.AddRawSettings("SFTPMaxPacketSize","32768");

marnold316

I tried the settings change recommended in the article and I still got filepart of 0 bytes on server

2022-08-25 15:57

Martin, thank you for the quick response.

I added the AddRaw SendBuf 0 and it didn't change the result. Filepart is still 0 bytes on the server. I have attached the log files. I have about four other clients uploading to the same server without issue. I have other SFTP servers where your component works perfect with multiple clients connecting.

Here is the code I am using:

SessionOptions sessionOptions = new SessionOptions
{
    Protocol = ftpType.Equals("sftp", StringComparison.OrdinalIgnoreCase) ? Protocol.Sftp : Protocol.Ftp,
    HostName = ftpHost,
    UserName = ftpUsername,
    Password = ftpPassword,
    Timeout = new TimeSpan(0, 0, 120)
};
 
if(ftpType == "ftp")
{
    sessionOptions.FtpSecure = FtpSecure.Implicit;
}
 
if(port != 0)
{
    sessionOptions.PortNumber = port;
}
sessionOptions.AddRawSettings("SendBuf","0");
 
if(ftpType.Equals("sftp", StringComparison.OrdinalIgnoreCase))
{
    sessionOptions.SshHostKeyFingerprint = sshKey;
}
 
TransferOperationResult transferResult;
 
using (Session session = new Session())
{
    if(FileTransferredEventHandler != null)
    {
        session.FileTransferred += FileTransferredEventHandler;
    }
    session.XmlLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_XMLLog.xml");
    log.InfoFormat("WINSCP XML Log Path= " + session.XmlLogPath);
    session.Timeout = new TimeSpan(0, 0, 130);
    // session.ReconnectTime = new TimeSpan(0, 0, 140);
    // Connect
    session.SessionLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_SessionLog.log");
    log.InfoFormat("WINSCP Session Log Path= " + session.SessionLogPath);
    session.DebugLogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WINSCP_DebugLog.log");
    log.InfoFormat("WINSCP Debug Log Path= " + session.DebugLogPath);
    session.DebugLogLevel = 2;
    // Connect
    session.Open(sessionOptions);
 
    // Upload files
    TransferOptions transferOptions = new TransferOptions();
    transferOptions.TransferMode = WinSCP.TransferMode.Binary;
    transferOptions.OverwriteMode = OverwriteMode.Overwrite;
    
    transferResult = session.PutFiles(string.Format("{0}\\*", dir), string.Format("{0}/", (String.IsNullOrWhiteSpace(remoteDirectory) ? "" : "/" + remoteDirectory)), true, transferOptions);
}
 
return transferResult.Transfers.Count;

martin

Re: Timeout waiting for WinSCP to respond

2022-08-25

Please try this Host is not communicating for more than 15 seconds. Still waiting… Warning: Aborting this operation will close connection!
Let me know, if it does not help.

marnold316

I have the same problem as well.

2022-08-24 20:53

I have the same problem with larger files but on just one client. I tested with 300KB files and I got the 0KB filepart, I did a test with a 67KB file and got the 0KB filepart, when I did a test with a 2KB file it uploaded just fine. I am using the latest NuGet package, the version is 5.21.2.0. I had the same problem in an older version of WinSCP as well. I am using SFTP as a server, the server has plenty of drivespace, the server is running FreeFTPD and is working well with other clients uploading using the .NET WinSCP.

The SFTP server shows a disconnect right after the filepart upload which does not show as a failure.

08-24-2022 15:20:59 HOST 173-13-11-33-Michigan.hfc.comcastbusiness.net SFTP 143 is changing dir to / (C:\inetpub\wwwroot\GCRemoteTools_WaltersDimmick\AuditMedia\143\)

08-24-2022 15:20:59 HOST 173-13-11-33-Michigan.hfc.comcastbusiness.net SFTP 143 is listing /In (C:\inetpub\wwwroot\GCRemoteTools_WaltersDimmick\AuditMedia\143\In\1614_c4_0_1661262050.jpg)

08-24-2022 15:20:59 HOST 173-13-11-33-Michigan.hfc.comcastbusiness.net SFTP 143 is listing /In (C:\inetpub\wwwroot\GCRemoteTools_WaltersDimmick\AuditMedia\143\In\1614_c4_0_1661262050.jpg.filepart)

08-24-2022 15:20:59 HOST 173-13-11-33-Michigan.hfc.comcastbusiness.net SFTP 143 is uploading /In/1614_c4_0_1661262050.jpg.filepart (C:\inetpub\wwwroot\GCRemoteTools_WaltersDimmick\AuditMedia\143\In\1614_c4_0_1661262050.jpg.filepart)

08-24-2022 15:21:00 HOST 173-13-11-33-Michigan.hfc.comcastbusiness.net SFTP 143 disconnected

Let me know if you need anything else, thank you for looking into this matter, it is greatly appreciated.

vvreddy143

Timeout waiting for WinSCP to respond

2022-08-23 20:34

Hi,

When I am trying to upload file with size "500KB" using .NET class library or script, I am getting error as "Timeout waiting for WinSCP to respond" and file ending up with 0KB with file extension ".filepart".

When I am trying to upload "1KB" file, it was successful.

I have attached sessionlog, debuglog and .NET exception log here. Please assist me.