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Lag when using Indy to delete an FTP file

Posted on 2004-09-11
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Last Modified: 2010-04-05
When I delete a file from a remote FTP server using Indy 9.0 (or even IE) the file remains visible (to Indy) and readable for about 60 seconds. During that time, a second call to Delete it returns an exception but I can Put a file with the same name (replacing the original).

Has anyone run into this kind of thing?

Tom
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Question by:tfield98
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Expert Comment

by:geobul
ID: 12053246
Hi,

No, I haven't. And noone else hasn't obviously. What is that remote FTP server and what OS it's running on? Perhaps your request for deletion is being queued somewhere for further execution and the file is being locked or something. All this depends on the FTP server and/or the OS of the remote machine. I don't think you could do anything more.

Regards, Geo
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Author Comment

by:tfield98
ID: 12054397
Hi, Geo,

We'veI concluded it is the FTP server version that's the problem. We're running NT 4.0 and  IIS 5.5.

I dug around with google and discovered a thread in a group regarding this same problem we are having with the delete lag. Both the poster and we are running an older version of IIS. I suspect that this is the problem. Since the server is in-house, we'll be upgrading later this year it to see if that makes a difference.
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Accepted Solution

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geobul earned 125 total points
ID: 12055256
The server is the one that is creating the problem for sure. I've been using Indy 9 FTP client component for long time connecting to Unix and Windows based FTP servers and have had no problems deleting files. These programs communicate intensively getting hundreds of files daily and deleting them after downloading.

I have no experience using IIS though. Upgrading should solve the issue. There is nothing special in deleting a file on a FTP server using Indy, so I don't think it's your code that has to be changed.

Regards, Geo
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