Verify file is there in a remote server

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I need to verify whether some files are correctly uploaded to a remote server. I have the file info such as file size and file checksums in the database. May I know how can I get the file size of a file in a remote server in perl. Any perl modules that has this capability?

Thanks,
Peter

Comment on Verify file is there in a remote server

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Re: Verify file is there in a remote server by ikegami (Patriarch) on Apr 01, 2010 at 01:41 UTC
What kind of server? One would presume that whatever protocol you used to upload the file has a function to retrieve information about the file too. Then again, I shouldn't make assumptions about a protocol that doesn't even let you if a transfer was successful or not.	[reply]
Re^2: Verify file is there in a remote server by Anonymous Monk on Apr 01, 2010 at 01:57 UTC
I am using a custom made file protcol to upload files, but I can use http to retrieve the file info.	[reply]
Re^3: Verify file is there in a remote server by ahmad (Hermit) on Apr 01, 2010 at 02:26 UTC
The easiest and simplest way, since you only have http access to those files. Write a script and put it there with the files, then you can call that script with file name as a param e.g: getsize.pl?file=somefile.zip. It will then return the filesize or checksum or both (it's up to you to decide). And you can use LWP to fetch the response automatically	[reply]
Re^3: Verify file is there in a remote server by ikegami (Patriarch) on Apr 01, 2010 at 02:43 UTC
If the file is web accessible, you could probably do a HEAD request to fetch its size. Or better yet, return the information you want in the response to your upload request.	[reply]