IIS 5 & IIS 6
FTP Problem - Zero Byte File
Last post Oct 26, 2008 01:03 AM by murtaza_t
Oct 25, 2008 12:11 PM|rchirole|LINK
I have an issue that's driving me crazy and need help please!
We have a Windows 2000 Server running IIS for FTP. There is also a UNIX server that is constantly using FTP to send files to the Windows Server, these files are then picked up by an application on the Windows Server and processed (in this case for printing).
The problem is that on occasions a file gets locked in the IIS designated FTP directory and the application on the Windows Server can not continue. The file has 0 bytes and can only be removed by stopping and starting IIS FTP.
Because of this my UNIX server that processes many FTP type transactions stops any other appication from FTPing. Which causes havoc!!!
Some facts: There are unlimited connections set in IIS,
Any ideas for a quick remedy and a what the problem may be?
Oct 25, 2008 01:50 PM|Rovastar|LINK
The way I see it is either
a) IIS FTP failed somehow with valid data from the UNIX FTP
b) The UNIX FTP sent malformed data to the IIS FTP causing it to fail. What did their logs say?
c) The application accessed the data before it was ready and the caused some type of lock. Could you debug the app to see what it says for more clues.
Either of these cases would be difficult to work out but I would work out which one (or even combination) of them is occurring so you could focus you efforts there.
All that said the quickest way I would have of trying to fix the problem would be to try another FTP program (eg Filezilla) on the IIS box. If it is not a problem then you can either stick to the other FTP server program or focus more on IIS. If it is still
a problem look at the other factors, if it is then *still* a problem look at the Windows system.
Oct 26, 2008 01:03 AM|murtaza_t|LINK
I see this more as a firewall issue rather than application or software problem.