FluentFTP
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robinrodricks
DownloadDirectoryAsync issues, pausing download after every file
FTP OS: Unix / Windows / Embedded
FTP Server: Pure-FTPd / DrFTPD / Vsftpd / ProFTPD / Vax / VMS / OpenVMS / Tandem / HP NonStop Guardian / IBM OS400 / AS400 / Windows CE
Computer OS: Windows 2008 R2 Server
FluentFTP Version: 33.0.3
When trying to download a directory and all it files, theres a delay between every file it seems like.
Im using a progress to log the progress of each file
Progress<FtpProgress> progress = new Progress<FtpProgress>(p => {
if (p.Progress == 1)
{
// all done!
}
else
{
// percent done = (p.Progress * 100)
Console.WriteLine("File " + p.LocalPath + " PROGRESS : " + p.Progress * 100 + " Speed : " + p.TransferSpeedToString());
}
});
//DownloadFile(localFilePath, _ip, _username, _password, path);
await conn.DownloadDirectoryAsync(localFilePath, path, FtpFolderSyncMode.Update,FtpLocalExists.Append, FtpVerify.None,null, progress);
Im using these settings:
conn.SslProtocols = System.Security.Authentication.SslProtocols.None;
conn.EncryptionMode = FtpEncryptionMode.Explicit;
conn.ValidateAnyCertificate = true;
conn.RetryAttempts = 5;
conn.ConnectTimeout = 30000;
conn.ReadTimeout = 30000;
conn.DataConnectionConnectTimeout = 30000;
conn.DataConnectionReadTimeout = 30000;
// conn.SocketPollInterval = 15000;
//conn.SocketKeepAlive = true;
conn.DownloadRateLimit = 0;
conn.TransferChunkSize = 1024 * 256;
conn.LocalFileBufferSize = 1024 * 256;
Any idea why this is happening?
It seems to be 30 seconds between every "pause"
Ok so its not a pause between every file, it downloads a couple of files at the time it seems like, then pauses for 30s...
I have tried to play a little with the settings, setting all the timeouts to 5 seconds, and using SocketPollInterval = 0 and SocketKeepAlive = true. It now downloads files in a "better" intervall, but still the number of files that are donwloaded varies alot, sometimes 1 file is downloaded and with a pause of 5-20 seconds, and sometimes it downloads 5-10 files with a pause of 5-20 seconds...I dont get why.. The file sizes are almost the same, they are around 150-200kb each.
Console.WriteLine will be causing a delay. I'm not sure why else there should be a delay - all code is direct and we don't use any third party async/threading code. Also, the only time we delay intentionally is for rate limiting, which looks like you have disabled.
What you can do is take the source code of FluentFTP and build from source and add that reference to your project, as if its one of your own projects. Now when the delay happens, press PAUSE in your debugging tools in VS. This should take you right to the line that is pausing the system.
Hi, the thing is that it goes very fast when debugging on my computer using a ftp server localy on my machine. But when using the code on the server, that is using a FTP on another server(they are still on the same network), it is very slow. When using filezilla on the server and downloading the files that way, its very fast...
@heavyflames Is this issue still open for you?
The delay could be the connection being dropped mid transfer. To really diagnose this well, a full verbose log would be needed, also to get the best debugging messages in the log, using the newest Fluentftp version.
