Problem with Pale Moon and Calibre content server

[KonradK]

Since Calibre 3.0 its content server has been rebuilt.
Now it is possible to read ebook on server inside browser. However not in Pale Moon; I had success with Chrome x64 (in non-incognito mode).
However when trying to read any ebook in Pale Moon x64 I get an error message, like this:

Error: Unhandled error
DataCloneError: The object could not be cloned.
Error at http://mysite.net:8081/:16113:
Traceback (most recent call last):

handle_message@http://mysite.net:8081/:16143:16
on_iframe_ready@http://mysite.net:8081/:16162:12
do_pending_load@http://mysite.net:8081/:16173:16
show_spine_item_stage2@http://mysite.net:8081/:16578:0
ρσ_interpolate_kwargs@http://mysite.net:8081/:2410:0
send_message@http://mysite.net:8081/:16113:12

("mysite.net" is not real name)

I have reported the problem on Pale Moon forum. Moonchild - the main developer - said me that the message is thrown by server and only developer of the server may know its meaning.

Any ideas. Had somebody a success reading ebooks from content-server using Pale Moon?

[kovidgoyal]

No that's not thrown by the server. It's thrown by the browser and indicates that the browser failed to clone some object, most likely a Blob object. Presumably pale moon doesn't support that. Point the pale moon developer to this: https://developer.mozilla.org/en-US/...lone_algorithm

[KonradK]

Thanks for quick answer!

[gbm]

Originally Posted by KonradK

Thanks for quick answer!

One of you add-on or extensions could not be compatible.



bernie

[KonradK]

@gbm

Wrong trace.
After restarting with all plugins and extensions disabled the problem persists.

[KonradK]

Originally Posted by kovidgoyal

No that's not thrown by the server. It's thrown by the browser and indicates that the browser failed to clone some object, most likely a Blob object. Presumably pale moon doesn't support that. Point the pale moon developer to this: https://developer.mozilla.org/en-US/...lone_algorithm

Here is answer of Pale Moon developer:
https://forum.palemoon.org/viewtopic...119804#p119804

It's not an error thrown by the browser. At the very least it would be a custom error thrown by their script -- which doesn't provide any usable context for us -- if the authors would be so kind as to quote which code throws, we have something to go on.

Also, your quoted link is mangled. No idea what I'm supposed to be looking at.
Never mind, I figured it out. Not that that helps because we support workers/shared workers and their data transfer methods like postMessage() and the likes. So we will have to know exactly which code throws if we want to investigate what's happening.

[kovidgoyal]

Sigh. Once again, the browser is failing to clone some object, most likely a blob object, because it does not support the structured clone algorithm correctly. The link I posted to the structured clone algorithm on MDN is not "mangled" whatever that means.

As for where in the script the error is thrown, there is a detailed traceback in the error message. All they need to do is either

1) Reproduce the error themselves and click the error link in the JS console which will take them to the exact line the error is raised, but perhaps they also dont have a working JS console in Pale moon.

2) Lookup the line numbers in the traceback manually in the file resources/content-server/index-generated.html in the calibre installation directory.

[KonradK]

The link I posted to the structured clone algorithm on MDN is not "mangled" whatever that means.

This is my fault. Because I made simple copy/paste, the link could look mangled. Similarly phrase "Never mind, I figured it out" was originally struck through, but not in my quote.

Anyway I have provided links to quoted posts.

Because now both kovidgoyal and Moonchild know that the problem exists and both have links to respective threads I do not see a sense of quoting their answers anymore.