JSX graph with LateX uses partly CDN files even though Mathjax is configured locally

[MuellerAle]

JSX graph with LateX uses for some .woff files CDN instead of the locally configured Mathjax. We suspect this is cause by line 253 of vle_specific.php. Could you change it to use the Moodle built-in Mathjax path field?

[aharjula]

#1340 should explain why we cannot do that. Basically, we do not know if the built-in MathJax path field points to a source that provides the correct headers needed by the sandbox iframes of those [[jsxgrahps]], and thus we use the CDN, which does. We cannot make the path have those headers, but if you can, then you can also change that URL in your setup to match your setup.

Naturally, this is an issue for those running closed networks, for example, for SEB or other exam setups. Still, on the other hand, when you start closing networks, you are probably also able to adjust headers and build your own proxies.

[aharjula]

Apparently, there is another MathJax URL there... Which is not the one discussed in #1340, the same applies to it. It does seem to be unrelated to [[jsxgraph]] and appears to be unused in the current dev version.

[MuellerAle]

Thanks for the explanation (again). It seemed to me as that would be 2 different things.

[EJMFarrow]

From the STACK side we've been always using the locally configured MathJax setting for iframes since 4.10.0 and for non-Parsons iframes from a while before that. #1160 The line in vle_specific.php was related to Parsons problems only and is no longer used from 4.10.0

Parsons problems are still accessing CDN for fonts #1694 but this doesn't seem to be the case for JSXGraph.

Is this maybe a JSXGraph issue?

[MuellerAle]

Hi @EJMFarrow

Many thanks for your reply! I just checked briefly and it seems to load now the correct files. It might be that back then I tested with an earlier version than 4.10.0. So everything seems to be correct now.

[EJMFarrow]

Thanks for checking, @MuellerAle . I'll close this issue now.