[ZendTo] Re: File dropoff

Todd Albers talbers at vistaprod.com
Fri Aug 24 13:44:59 BST 2012 

That is some very good info and will come in handy. The problem is that right now I can't upload a file of any size. An example would be a 45 kb file on Windows 7 using firefox asks if I want to leave the page and nothing is uploaded. I really have done nothing to the server after install so that may be the issue. I will go through the config files today and see if there is something I need to setup.

I am completely new to the web server world but I am probably up to newbie on Linux.



On Aug 24, 2012, at 4:22 AM, "Mike Brudenell" <mike.brudenell at york.ac.uk<mailto:mike.brudenell at york.ac.uk>> wrote:

Hi, Todd -

Some questions to ask yourself:

  *   How large is the file you are dropping off?
  *   Which operating system and version are you using? (If it's Windows is it the 32-bit or 64-bit version?)
  *   Which web browser and version are you using? (If it's on Windows are you using a 32-bit or 64-bit version of the web browser?)
  *   If the file is over 2 Gbytes, has the ZendTo server been set up with a version of PHP that will handle such large files? (Instructions on the zend.to<http://zend.to> web site.)

There are all important for files larger than 2Gbytes, and in some cases 4Gbytes. I had to investigate the same symptoms following an end-user enquiry here and tried various combinations of operating system and web browser. I enclose here an extract of the message I sent to the list on 19-Jun-2012 showing our test results at the time;web browser versions may have moved on since:

We are running ZendTo 4.08 and I have been using various browsers to try and upload a 4.74 Gbyte test file to our DropOff Service, from my Apple Mac running OS X 10.7.4 with an on-site wired LAN connection running at 100 Mbits/sec:

     *   Safari (version 5.1.7) — the upload works and the drop-off successfully created :-) and…
     *   Opera (version 12.00) — the upload works and the drop-off successfully created :-) BUT…
     *   Chrome (version 19.0.1084.56) — uploads to 99%, locks up Chrome for a while, then usually Chrome unlocks (the alternative is it freezes and needs a Force Quit) but fails saying the connection was reset
     *   Firefox (version 12.0) — starts upload but fails soon afterwards, asking whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off
     *   Camino (version 2.1.2) — starts upload, goes further than Firefox but then it, too, asks whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off

Safari and Firefox both have their Open in 32-bit mode checkboxes unticked in their Get Info boxes; neither Chrome nor Camino offer this checkbox.

I've tried with a smaller test file of around 2.8 Gbytes from my Mac and that went up from Chrome OK. (So perhaps there might be a 4 Gbyte (rather than 2 Gbyte) barrier affecting Chrome on OS X?)

One of my colleagues has been experimenting with a 7 Gbyte file and browsers on Windows 7 and Linux with these results:

     *   Chrome (on Windows 7 64-bit) — did full upload then failed with an error (which unfortunately we can't remember!)
     *   IE 8 (on Windows 7 64-bit) — starts upload but fails soon afterwards, asking whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off
     *   IE 9 64-bit (on Windows 7 64-bit) — starts upload but fails soon afterwards, asking whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off
     *   Firefox (on Windows 7 64-bit) — starts upload but fails soon afterwards, asking whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off
     *   Opera (on Windows 7 64-bit) — uploaded an empty file (but probably because Opera is still 32-bit?)
     *   Chrome (on Linux 64-bit) — the upload works and the drop-off successfully created :-)
     *   Firefox (on Linux 64-bit) — starts upload but fails soon afterwards, asking whether you want to navigate away from the page; answering Yes reports the connection was reset, answering No just seems to stop the upload and deletes the partial drop-off

These tests were done on Windows 7 and Linux running in VMs. Again, small files of less than 2 Gbytes seem to go through fine.

As Jules points out, not many people upload such large quantities of data using a web browser so it's quite possible for browsers to have bugs in this area that go undetected and, when reported, the browser developers treat as low priority.

Cheers,
Mike B-)

On 23 August 2012 19:34, Todd Albers <talbers at vistaprod.com<mailto:talbers at vistaprod.com>> wrote:
Ok time for my second round of dumb questions.  I have ZendTo installed, I can add new users and login but if I try to drop off a file the browser just asks me if I want to ‘leave the page’.  If I say yes then I have a problem as the page is blank.  If I close the browser, reopen and try it again I get one shot where the progress bar comes up but never fills up just goes away.  I then do not get an email that a file is there and my inbox and outbox are empty.

Also if I try to just drop off a file without logging on under the confirm you are real person I get the following error:
Input error: k: Format of site key was invalid.


Any ideas on these?

Thanks,

Todd

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