Can't connect to QuickLaTeX server

Further to my query: I have installed Core Control, and every QuickLaTeX call fails with http_request_failed. The transport is WP_HTTP_curl and I have installed curl, restarted apache2, and checked that curl is properly enabled (with a script I found called curl-check.php), which it is.

So I’ve done pretty much everthing I would have thought is needed, except that calls to QuickLaTeX still fail.

When I last posted to my blog (some months ago) there were no problems – so something at my end or in QuickLaTeX has changed since.

FWIW, I’m running Ubuntu 14.04 on a self-managed VPS.

Thanks again,
Alasdair

Hi Alasdair,

I have just checked – server is working well, serving many thousands of requests daily.

Could you please tell IP of your VPS/URL. Probably error logs will reveal something…

Thank you for your reply. The IP Address is 125.63.50.145 and the URL is https://numbersandshapes.net

By the way – I think QuickLaTeX is quite superb, and its existence is one of the principal reasons I switched from wordpress.com to a self-hosted blog using www.remarpro.com. So I’m very much hoping that I can use it again!

I wonder if QuickLaTeX can be configured to use a local TeX installation? I could easily install TeXlive and make calls to that instead of an external server.

Thanks for your help,
Alasdair

Oh, I see.

In the past the IP generated a lot of requests to the server (keeping it busy at 30-50% load), because cacheing was turned off in QL plugin (it is ON by default and gives instructions on how to make it work).

Please please please, turn ON the cacheing in plugin. I will unblock this IP in a few hours.

Sorry for blocking – I couldn’t find any contact information for the IP.

At the moment QL cannot work with local installation, since server side is the set of custom scripts and pieces of software I wrote over the years (various converters, optimizers, balancers, specifically patched TexLive, etc.)

Making it deploy-able would be difficult.

Caching is on, and I have also installed and set up WP-Super-Cache. I have the directory ql-cache in my /var/www/html/wp-content directory, with permission 777 and owner wpadmin. Currently it has 433 lots of png, svg, and txt files.

If again my site is causing a heavy load you can let me know: [email protected] (if needed for future use). I’m not sure why I turned off caching… and I’m sorry for placing unnecessary load on your server.

Many thanks for your trouble!

cheers,
Alasdair

Great, thank you!

One more thing. Please disable the “Photon” module in WordPress’s Jetpack plugin.

It adds “?resize=…” suffix to every image on your blog. So that it resizes every image coming from QL and it doesn’t work with SVG!

I have no idea why Automattic makes it so aggressive and not friendly for other plugins.