FXP: ftp 425 can't open data connection

FubarDevelopment / FtpServer

Portable FTP server written in .NET

http://fubardevelopment.github.io/FtpServer/

MIT License

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FXP: ftp 425 can't open data connection #106

Open mo3head opened 4 years ago

mo3head commented 4 years ago

For some reason the server occasionally errors with code 425. After the first time it keeps happening. I can still upload and download normally but site to site transfer will result in error 425. I tried with PASV on and off. I tried on Windows 2012 R2 and Ubuntu 18.04. Firewalls completely off. Any idea what may be going on?

mo3head commented 4 years ago

I figured out the problem. Apparently the file handles are corrupted when a user transfers a large file and runs in the set timeout. To reproduce this: Set timeout to 30sec Site to Site transfer large file to make sure you need more than 30sec to transfer

Does not seem to happen 100% of the time.

e/sorry for reopening/opening again.. I am dumb.