Race-condition when renaming a file after upload about fluentftp HOT 4 CLOSED

Can you please add a separate issue for this as I see no connection with the OP's issue. And if you can use my code as a reference instead of coding from scratch; basically I upload in chunks, and various other stuff that might be useful and/or might solve your problem automatically. Please see UploadFileInternal

from fluentftp.

This is an issue in FluentFTP. I'm working on this. The error is because the data stream used for writing the file is parallel to the FTP control stream. I need to find a way to delay the control stream so race conditions don't occur. I'll be adding the alt version in another API, probably called UploadFile() or similar. I'll let you know when its ready.

from fluentftp.

I have fixed this in 16.0.17 if you use the high level UploadFile and DownloadFile API. This is the code I used to test:

static void TestUploadDownloadFile() {

	using (FtpClient cl = new FtpClient()) {
		cl.Host = m_host;
		cl.Credentials = new NetworkCredential(m_user, m_pass);

		// 10 M file
		cl.UploadFile(@"D:\bigfile.exe", "/public_html/temp/big.txt");
		cl.Rename("/public_html/temp/big.txt", "/public_html/temp/big2.txt");
		cl.DownloadFile(@"D:\bigfile_2.exe", "/public_html/temp/big2.txt");

	}
}

Please check with the latest version and see if it solves your problem.

from fluentftp.

Hi @hgupta9,
I'm using the low-level commands for uploading to be able to get progress info, ie. OpenAppend/OpenWrite and stream methods Write, Flush, then Close and Dispose.
After completed upload I'm calling Rename on the client, however what I'm seeing is that theres is a long wait before the Rename completes. Also if I do not insert a thread delay I get an exception on the rename command. Furthermore the bigger the file the longer the delay.
I am really impressed by the transfer speed, but unfortunately it takes longer renaming the file than transferring it. I'm testing with files larger than 100MB and I'm using the FluentFTP in a Xamarin project for iOS and Android.
I upload to a temporary name and then rename as I have a backend software that watches the upload folder.

Can I do anything to shorten the delay?

I have also tried disconnecting and reconnecting, in this case the disconnect is delayed. Once reconnected the rename is instantaneous.

from fluentftp.