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lightwo 15 Jul, 2022 @ 3:13am
[Bug] Forum OPs have no character limit for edits
Mirrored from this topic, consider merging


I was able to break a thread entirely by dumping 1.8 MILLION characters at peak, and after subsequent edits, it doesn't load any longer.

What is known so far
  • Dumping about 120 thousand characters to an edit causes E502 L3
    This also extends to My Comment History until a moderator deletes it!
  • Dumping an absurd amount of characters to an edit (confirmed with 1.89 million) causes the parser to generate an empty OP, but the page does load

Edit: examples removed due to breakage


If this is officially recognised, please consider reviewing other issues I outlined here, especially the last section.
Last edited by lightwo; 15 Jul, 2022 @ 4:57pm
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Showing 1-9 of 9 comments
Phoenix 15 Jul, 2022 @ 3:29am 
Interesting.
#1
lightwo 15 Jul, 2022 @ 3:30am 
Weirdly, dumping almost 2 million characters in an edit results in the parser breaking but the page does load, yet for about 180210 characters requesting the page results in Bad Gateway (E502 L3).

Here's a demonstration of a 1.8 million character edit:
https://steamhost.cn/steamcommunity_com/groups/dontevenbotherjoining/discussions/0/5913806367101153762/

I didn't set posting privileges in that group, but bear with me, they're there. It's just that the parser broke.
Last edited by lightwo; 15 Jul, 2022 @ 3:34am
#2
Phoenix 15 Jul, 2022 @ 3:40am 
I just see an empty post though:

https://abload.de/img/untitledr3jbb.png

Preview shows characters (lots of a's), post itself doesn't and loads fine.
Last edited by Phoenix; 15 Jul, 2022 @ 3:42am
#3
lightwo 15 Jul, 2022 @ 3:42am 
Originally posted by Phoenix:
I just see an empty post though:

https://abload.de/img/untitledr3jbb.png
Yes, I'm aware. If I allowed posting from non-members, you could verify it by quoting (the parser broke and couldn't generate the page). I can let you try if you want to verify.
Last edited by lightwo; 15 Jul, 2022 @ 3:43am
#4
Phoenix 15 Jul, 2022 @ 3:43am 
No, I don't think that's necessary tbh. Other threads over the limit don't load for me either, as you've stated.

Hovering over the threads (for previews) also causes noticible CPU spikes, but that might just be down to my browser.
Last edited by Phoenix; 15 Jul, 2022 @ 3:46am
#5
lightwo 15 Jul, 2022 @ 3:56am 
Okay, I determined that at around 120k a 502 is thrown, and at an even higher bar it still works but the parser just gives up and generates an empty OP.
Last edited by lightwo; 15 Jul, 2022 @ 3:56am
#6
Phoenix 15 Jul, 2022 @ 4:10am 
Might want to post this in the steam beta forum. Apparently that's the place to go for bug reports for the regular client (or client-associated problems, anyway) as well.
Last edited by Phoenix; 15 Jul, 2022 @ 4:10am
#7
lightwo 15 Jul, 2022 @ 4:13am 
Originally posted by Phoenix:
Might want to post this in the steam beta forum. Apparently that's the place to go for bug reports for the regular client (or client-associated problems, anyway) as well.
Cheers. I intended to post there... had my last hopes this subforum was checked by Valve employees to any extent.
#8
Phoenix 15 Jul, 2022 @ 4:23am 
Originally posted by lightwo:
Cheers. I intended to post there... had my last hopes this subforum was checked by Valve employees to any extent.
It is, for all I can tell, but bug reports are mostly posted over in beta forum and I'd wager there is a higher chance of this being noticed/answered.
#9
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Date Posted: 15 Jul, 2022 @ 3:13am
Posts: 9
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