FTP passive connection is not closed
|Reported by:||Andrew||Owned by:|
|Component version:||Operating system type:||Windows|
|Operating system version:||Windows 7 SP1|
Create a binary file with contents: ff 00 00 00
Send it over FTP in passive mode, the connection hangs un-closed, thus server locks the file until timeout reaches, then Filezilla Client repeats an attempt to send the file, obviously failing as the file is locked on the server.
This is not the only file that makes filezilla hang a connection. A lot of UTF-16 files causes the same problem. Maybe all, don't know.
According to Wireshark, FTP-Data message of 4-bytes length is never followed by a FIN message, neither it is FIN itself.
OS: Windows 7 SP1 7601, 32bit
Filezilla: 3.5.3, build 2012-01-08
Server: Gene6 FTP Server 3.10.0 build 2