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ZIP file corruption problems
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Join Date: Feb 1999
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Jun 4, 2003, 09:17 PM
 
I'm trying to ZIP some html/graphics files and upload them to my web site so that someone else can download them. I've tried Stuffit DropZip and ZipIt both of them can make an archive, which I can expand locally. However, when I transfer them to my site via Transmit 2.5.3 or rBrowser, then redownload them, they are usually corrupted and don't expand. The file sizes show to be the same locally and on the server so how could this be happening, especially with such randomness.

Sometimes the same files are corrupted in the archive, sometimes it's totally different ones. In all cases I can expand locally after making the archive with no problem so the weakness must be in the transfer, web site, or download that changes the file somehow. Any idea?
     
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Jun 5, 2003, 02:31 AM
 
Originally posted by gunnar:
I'm trying to ZIP some html/graphics files and upload them to my web site so that someone else can download them. I've tried Stuffit DropZip and ZipIt both of them can make an archive, which I can expand locally. However, when I transfer them to my site via Transmit 2.5.3 or rBrowser, then redownload them, they are usually corrupted and don't expand. The file sizes show to be the same locally and on the server so how could this be happening, especially with such randomness.
What about the cksum of the original file and of the downloaded file ? (cksum is command line , so you will need terminal to use it).

Are you sure you're tranferring in binary when you upload your file ?
     
gunnar  (op)
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Jun 5, 2003, 10:31 AM
 
I'm sure I'm using Binary to transfer. How do I do checksum?
     
gunnar  (op)
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Jun 5, 2003, 12:07 PM
 
I did the checksums and they are of course different. Either the file is being read incorrectly off my drive when uploading, the server is mangling it, or it's being written incorrectly when I download. The last is unlikely because other people have the same download errors consistently as me.
     
   
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