Error when opening EPUB file which contains many chapters via Web Interface

[lifegpc]

I have a ebook which contains lots of chapters. When I open it via Web Interface. It consume lots of time to download. And I got lots of network errors. (I am sure that all these requests are just timeout.)
Any idea to improve this? Maybe download epub directly from server and parse it on client side.
Screenshot: https://pic.kanahanazawa.com/uploads/big/8f191cabaf09e95ca81312dca86c4465.png
https://pic.kanahanazawa.com/uploads/big/ef91bd90d0b83bf418d0ea3da505f91c.png (The first request are working well.)

[Kovid Goyal (kovid)]

I'm afraid re-implementing large parts of calibre in JS which is what's needed for
client side conversion to HTML is not something I am willing to do.
There are no limits to viewing large file other than those imposed by
network/browser, so I suggest maybe loading the book ona fast network
at home initially. I cant access your book to test with since launchpad
does like files with non-ascii filenames.

 status wontfix

[lifegpc (lifegpc)]

Maybe just add retry function. Retry these resources if error is represented.

[lifegpc (lifegpc)]

>>> so I suggest maybe loading the book ona fast network
>>> at home initially.

it's very inconvenient. Because I set a reverse proxy for my server to make sure I can access the server everywhere. If I want to use it in local network, I need change the DNS record. (ISP don't give me a public IP address.)

And the attachment with OneDrive: https://1drv.ms/u/s!Aoq8mAMlVv8UvFz3DwJ7D30rs5Wr?e=byla0K (Password: SFJk6YWBzmC9UQilPNvXp3nV3NulnZXjxlb1xJSwf1V8Y/aJ3tdSgFlje6JAFz6UPBZ4TdynC3mJpdakDZ37aA== )

[Kovid Goyal (kovid)]

On Mon, Mar 14, 2022 at 10:22:00AM -0000, lifegpc wrote:
> Maybe just add retry function. Retry these resources if error is
> represented.

Given the number of failures I highly doubt retrying them will help.
You'll still get failures in the retries and I am not going to spin
endlessly retrying in the hope that they will eventually succeed.

[lifegpc (lifegpc)]

I notice many requests are send at same time. (https://pic.kanahanazawa.com/uploads/big/fde9dfaf751725c1da2cad7501ead3ba.png)
After some researches, I belive Chrome limit XHR requests count in few times. When limit is reached, Chrome will give net::ERR_INSUFFICIENT_RESOURCES in Network Panel in DevTools.
(Screenshot: https://pic.kanahanazawa.com/uploads/big/ba4f9687f5a6cce05c6e92a364ea14f0.png)
We need limit XHR requests count.

[Kovid Goyal (kovid)]

I would be amazed if that were the case. Browsers limit
the number of conceurrent connections to a server automatically. Much more likely
is that the error is coming because the disk (or rather however much of
the disk chrome is allowed to use) is full.

[Kovid Goyal (kovid)]

That said, I will look into the issue when I have some time and test with
your example book.

[lifegpc (lifegpc)]

I am sure It is not releated to disk. Because there are 400GB available spaces on that disk.

[lifegpc (lifegpc)]

And chrome give website 2400G spaces to store data. (IndexedDb, LocalStorage etc.) https://pic.kanahanazawa.com/uploads/big/43cfde03c4a2e72accc28f9328aefb26.png

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.

 status fixreleased