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freamon

@[email protected]

This profile is from a federated server and may be incomplete. Browse more on the original instance.

freamon ,

Firstly, sorry for any potential derailment. This is a comment about the Markdown used in your post (I wouldn’t normally mention it, but consider it fair game since this is a ‘Fediverse’ community).
The spec for lemmy’s spoiler format is colon-colon-colon-space-spoiler. If you miss out the space, then whilst other Lemmy instances can reconstitute the Markdown to see this post as intended, Lemmy itself doesn’t generate the correct HTML when sending it out over ActivityPub. This means that other Fediverse apps that just look at the HTML (e.g. Mastodon, KBIN) can’t render it properly.
Screenshot from kbin:
https://i.postimg.cc/x1JsXDZ3/kbin-post.jpg

Also, if you add a horizontal rule without a blank line above it, Markdown generally interprets this as meaning that you want the text above it to be a heading. So anything that doesn’t have the full force of Lemmy’s Markdown processor that is currently trying to re-make the HTML from Markdown now has to deal with the ending triple colons having ‘h2’ tags around it.
Screenshot from piefed:
https://i.postimg.cc/X7JWDqZN/piefed-post.jpg

(apologies again for being off-topic)

freamon ,

Well, there’s good news and bad news.

The good news is that Lemmy is now surrounding your spoilers with the expected Details and Summary tags, and moving the HR means PieFed is able to interpret the Markdown for both spoilers.

The bad news:
It turns out KBIN doesn’t understand Details/Summary tags (even though a browser on it own does, so that’s KBIN’s problem).
Neither PieFed, or KBIN, or MS Edge looking at raw HTML can properly deal with a list that starts at ‘0’.
Lemmy is no longer putting List tags around anything inside the spoilers. (so this post now looks worse on KBIN. Sorry about that KBIN users)

Quick video demonstrating that lemmy.world sends every activity out twice (i.imgur.com)

I realise this is a known issue and that lemmy.world isn’t the only instance that does this. Also, I’m aware that there are other things affecting federation. But I’m seeing some things not federate, and can’t help thinking that things would be going smoother if all the output from the biggest lemmy instance wasn’t 50%...

freamon OP ,

I can’t re-produce anything, because I don’t run Lemmy on my server. It’s possible to infer that’s it’s related to the software (because LW didn’t do this when it was on 0.18.5). However, it’s not something that, for example, lemmy.ml does. An admin on LW matrix chat suggested that it’s likely a combination of instance configuration and software changes, but a bug report from me (who has no idea how LW is set up) wouldn’t be much use.

I’d gently suggest that, if LW admins think it’s a configuration problem, they should talk to other Lemmy admins, and if they think Lemmy itself plays a role, they should talk to the devs. I could be wrong, but this has been happening for a while now, and I don’t get the sense that anyone is talking to anyone about it.

freamon OP ,

They’ll all POST requests. I trimmed it out of the log for space, but the first 6 requests on the video looked like (nginx shows the data amount for GET, but not POST):


<span style="color:#323232;">ip.address - - [07/Apr/2024:23:18:44 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span><span style="color:#323232;">ip.address- - [07/Apr/2024:23:18:44 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span><span style="color:#323232;">ip.address - - [07/Apr/2024:23:19:14 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span><span style="color:#323232;">ip.address - - [07/Apr/2024:23:19:14 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span><span style="color:#323232;">ip.address - - [07/Apr/2024:23:19:44 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span><span style="color:#323232;">ip.address - - [07/Apr/2024:23:19:44 +0000] "POST /inbox HTTP/1.1" 200 0 "-" "Lemmy/0.19.3; +https://lemmy.world"
</span>

If I was running Lemmy, every second line would say 400, from it rejecting it as a duplicate. In terms of bandwidth, every line represents a full JSON, so I guess it’s about 2K minimum for the standard cruft, plus however much for the actual contents of comment (the comment replying to this would’ve been 8K)

My server just took the requests and dumped the bodies out to a file, and then a script was outputting the object.id, object.type and object.actor into /tmp/demo.txt (which is another confirmation that they were POST requests, of course)

freamon OP , (edited )

We were typing at the same time, it seems. I’ve included more info in a comment above, showing that they were POST requests.

Also, the green terminal is outputting part of the body of for each request, to demonstrate. If they weren’t POST requests to /inbox, my server wouldn’t have even picked up them.

EDIT: by ‘server’ I mean the back-end one, the one nginx is reverse-proxying to.

freamon OP ,

A bug report for software I don’t run, and so can’t reproduce would be closed anyway. I think ‘steps to reproduce’ is pretty much the first line in a bug report.

If I ran a server that used someone else’s software to allow users to download a file, and someone told me that every 2nd byte needed to be discarded, I like to think I’d investigate and contact the software vendors if required. I wouldn’t tell the user that it’s something they should be doing. I feel like I’m the user in this scenario.

freamon OP ,

When I’ve mentioned this issue to admins at lemmy.ca and endlesstalk.org (relevant posts here and here), they’ve suggested it’s a misconfiguration. When I said the same to lemmy.world admins (relevant comment here), they also suggested it was misconfig. I mentioned it again recently on the LW channel, and it was only then was Lemmy itself proposed as a problem. It happens on plenty of servers, but not all of them, so I don’t know where the fault lies.

freamon OP ,

Yeah, that’s the conclusion I came away with from the lemmy.ca and endlesstalk.org chats. That’s it due to multiple docker containers. In the LW Matrix room though, an admin said he saw one container send the same activity out 3 times. Also, LW were presumably running multiple containers with 0.18.5, when it didn’t happen, so it maybe that multiple containers is only part of the problem.

freamon OP ,

I’m only running one process, I’d assume the problem isn’t happening for Feddit.dk.

Perhaps. The lemmy.ca post has a comment in from the mander.xyz admin who’s only running one, and there’s a new comment in this thread saying mander.xyx is one of the instances they see the most duplicates from.

freamon OP ,

okay

freamon OP ,

I’ve since relented, and filed a bug

freamon OP ,

I’ve been coerced into reporting it as bug in Lemmy itself - perhaps you could add your own observations here so I seem like less of a crank. Thanks.

freamon OP ,

Update: for LW, this behaviour stopped around about Friday 12th April. Not sure what changed, but at least the biggest instance isn’t doing it anymore.

Lemmyverse historical data? (data.lemmyverse.net)

I am interested in checking out the historical growth of a particular community. Lemmy Explorer crawls for data about the Lemmyverse every 24 hours or something, and that data is made available on their website. But I can only find where to download the latest data. Is there somewhere that I can find historical data? Does Lemmy...

freamon ,

(same person on different account, just so I can preview what the table will look like)

Hmmm. This might not help you much. That community was launched on 2024-01-22, with a page full of posts, so by the time the crawler picked up on it, it was already at 501 subs, 23 posts.
It lost 15 posts on 2024-02-12 (Stamets?).
There’s data missing from 2024-02-26 - 2024-03-01 (this data is from the bot at !trendingcommunities; I think those days are missing because I changed it from measuring Active Users Month (AUM) to Active Users Week (AUW)).
In terms of active users, the jump on 2024-03-04 is due to lemmy.world ‘upgrading’ to 0.19.3.

date subs aum posts
2024-01-23 501 71 23
2024-01-24 601 103 27
2024-01-25 643 125 32
2024-01-26 663 130 33
2024-01-27 668 130 33
2024-01-28 668 130 33
2024-01-29 670 130 33
2024-01-30 670 130 33
2024-01-31 670 130 33
2024-02-01 670 130 33
2024-02-02 670 130 33
2024-02-03 672 130 33
2024-02-04 672 130 33
2024-02-05 672 130 33
2024-02-06 672 130 33
2024-02-07 673 140 34
2024-02-08 678 144 35
2024-02-09 681 150 36
2024-02-10 681 150 36
2024-02-11 698 155 38
2024-02-12 703 156 23
2024-02-13 703 156 23
2024-02-14 711 160 24
2024-02-15 711 160 24
2024-02-16 711 160 24
2024-02-17 713 160 24
2024-02-18 713 160 24
2024-02-19 714 160 24
2024-02-20 715 160 24
2024-02-21 715 160 24
2024-02-22 715 160 24
2024-02-23 715 119 24
2024-02-24 715 77 24
2024-02-25 716 48 24

[data missing]

date subs auw posts
2024-03-02 718 2 25
2024-03-03 722 2 25
2024-03-04 726 129 26
2024-03-05 732 200 27
2024-03-06 748 397 29
2024-03-07 754 437 30
2024-03-08 755 453 31
2024-03-09 756 455 31
2024-03-10 770 576 33
2024-03-11 779 631 34
2024-03-12 782 651 35
2024-03-13 785 583 36
2024-03-14 787 473 36
2024-03-15 797 476 37
2024-03-16 802 493 39
2024-03-17 807 542 40
2024-03-18 812 650 41
2024-03-19 815 431 42
2024-03-20 817 400 43
2024-03-21 819 421 44
2024-03-22 819 437 44
2024-03-23 822 484 46
2024-03-24 829 533 47
2024-03-25 831 384 48
2024-03-26 833 395 49
2024-03-27 837 431 50
2024-03-28 840 462 51
2024-03-29 849 416 52
2024-03-30 851 390 53
2024-03-31 854 414 53
2024-04-01 861 466 56
2024-04-02 865 560 57
2024-04-03 868 473 58
freamon ,

Yeah. It seems like the kind of community he’d post in. I think there was some drama between him and startrek.website, resulting in him or the admins deleting the account.

freamon , (edited )

Oh, right. The chat on GitHub is over my head, but I would have thought that solving the problem of instances sending every activity 2 or 3 times would help with that, since even rejecting something as a duplicate must eat up some time.

Unable to find myself in search, advice?

I was having some issues finding myself in the search on other instances and wanted to see if I’m doing something wrong or if somebody has advice to fix it. Long story short, I’m a fan of Nostr so I’m usually on there. It’s bridged to the fediverse, so that usually gives me my microblogging fix on both sides of the...

freamon , (edited )

Lemmy instances won’t search outside of their own databases if you’re not logged in.

But if you are, what it does can be recreated on a command-line by doing:
curl --header ‘accept: application/json’ https://nerdica.net/.well-known/webfinger?resource=acct:[email protected] | jq .

This shows that your profile is at nerdica.net/profile/nate0. Lemmy puts all users at a /u/, but using webfinger means that other fediverse accounts don’t have to follow the same structure. For lemmy.world, you’re at lemmy.world/u/[email protected] in the same way that a mastodon user is at e.g lemmy.world/u/[email protected].

edit: However if you webfinger your mostr.pub account, you get: {“error”:“Invalid host”} so any ActivityPub instances will only ever be able to find you if you’ve interacted with them in some way to get a database entry. Edit: also, I tried to do this again, thought I’d try the npub1 account as well, but got Gateway Timeouts, so there’s a bit of jankiness going on too.

freamon ,

I know for sure that Lemmy won’t, it’s likely the same for Mastodon.

I was wrong about not being able to WebFinger your account - I still had the @ at the beginning when I trying. Doing it properly:


<span style="color:#323232;">curl --header 'accept: application/json' https://mostr.pub/.well-known/webfinger?resource=acct:910af9070dfd6beee63f0d4aaac354b5da164d6bb23c9c876cdf524c7204e66d@mostr.pub | jq .
</span>

gets the right response.

However, I’m logged into lemmy.world and it still couldn’t get your account. At a guess, it’s because there’s a 20 character limit on usernames.

freamon ,

lemmynsfw has implemented (or intends to) an interesting compromise, in that you can only downvote posts on that instance’s communities that you’re already subscribed to. Ideally, this means that downvotes are for the quality of the individual post, rather than as a reaction to the type of content.

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