Sometimes get an error on first load in Firefox

[haukex]

In Firefox, after clearing the cache and re-loading the dictionary for the first time, I sometimes get a "The dictionary failed to load!" error:

$Id: 214f5c345c91b2dcccfb13fcd3e470404fbe7221 $
TypeError: The input data is corrupted: incorrect header check

or

$Id: 214f5c345c91b2dcccfb13fcd3e470404fbe7221 $
TypeError: The input is ended without reaching the stream end

and the console shows:

https://ftp.tu-chemnitz.de/pub/Local/urz/ding/de-en-devel/de-en.txt.gz cors 200 OK [worker.8ab956e8.js:1:3751](https://dict.zero-g.net/worker.8ab956e8.js)
ProgressTransformer expected 8682926 but got 0

A reload fixes the issue.

I suspect a bug in Firefox rather than the app, but I could take a closer look at it.

Edit: According to the network trace, Firefox is sending Range: bytes=1542415- and If-Range: "847dae-62305d44eb300" headers and the server is responding with 206 Partial Content, could that be the cause?

Edit 2: I'm now also sometimes getting errors in Firefox that the tab has crashed, which feels to me to confirm a bug in Firefox. Still looking for a workaround.

[frituc]

The same here with Firefox 128.3.1esr
In private tab it doesn't work after reloading …

[frituc]

Ok, after F12 and disabling cache it worked.

[haukex]

Thanks, unfortunately I'm still not sure why this is happening. I'm still guessing it's maybe a bug in Firefox for HTTP requests sent from Web Workers or something. It seems that usually a simple reload fixes the problem (and it seems to only happen after clearing the saved website data).

[haukex]

I just implemented #35, which means that dictionary updates will now be retried when the page is reloaded, so at the very least the current workaround of just reloading the page in Firefox should work for updates too...

Edit: I should probably also implement a message "background update failed" instead of the status bar just showing "(Updating in background...)" forever. Edit 2: Now did that in a70a9f5.

[haukex]

Interestingly, since I implemented 6c2f957 and 812686d, I haven't seen the error anymore, so it seems my guesses may have worked around the problem. I will monitor this for a while, and if I don't see the error anymore, I can assume that one or both of those commits fixed it.

[haukex]

I haven't seen any more Firefox crashes since the above, so I hope this is fixed.

[christophfriedrich]

This just happened to me using Firefox 139.0.4 on Windows 11. Opened the site (using my usual beo searchterm shortcut forwarding me to https://dict.zero-g.net/#q=lizenz) and got this:

Console output:

Hitting F5 resolved the issue.

[haukex]

Thanks for the report - was this a one-time thing or are you able to reproduce it? Is this a PC where you use the dictionary often (because if not, it might be possible there was still an older version of the app in the cache)? Edit: More specifically, reproducing it would probably mean clearing all saved data for dict.zero-g.net and reloading the page, maybe doing this a couple of times, to see if you can still get the error to occur.

[haukex]

@christophfriedrich Have you had any luck reproducing this? Or perhaps it was only a one-time thing?