Pre-Alpha ActivityPub-related bug reports

Scott M. Stolz

For a threaded conversation, if I am following someone who created a top level post, the expected behavior is that you get to see the whole thread. For some reason, I am not getting all of the replies to the thread. I have to go to the forum to view all of them, and since they never reached my app, I can't reply to them via ActivityPub.

julian

@[email protected] said:

For a threaded conversation, if I am following someone who created a top level post, the expected behavior is that you get to see the whole thread.

I'm not entirely sure this is the case. Expectation, 100% agreed, but in practice, I don't think that is the case.

For NodeBB to do this would mean that when Create(Note) activity is received in response to a post, that it be automatically forwarded to all the followers of the author being replied to. It can be done, but can't be properly verified because the forwarded activity's domain doesn't match the domain of the sender (me). Any reasonably secure AP implementation should automatically drop it.

I have oodles of ideas as to how to solve the topic of backfill, but message forwarding I don't know about...

julian

@[email protected] I think I know why this is the case.

For you on Hubzilla, the message as received by NodeBB contains the following collection https://community.nodebb.org/uid/2/followers. The expectation according to the spec states that I must forward that message along to those users. This is so those users would get the whole conversation, and avoid ghost replies, etc.

NodeBB does not do that at the moment. Thanks for letting me know about it.

The thing is, while Hubzilla does this, and even if NodeBB implemented it, Mastodon does not send those collections. When a reply is received, its recipients list usually contains only the person being replied to, the author's follower collection, and anybody else who happens to be mentioned.

So that's the reason why you can't see all of the replies in the thread, because another implementor didn't send them to everybody

It's actually quite interesting that Hubzilla explicitly includes OP's follower collection in the recipient list, I was thinking of doing the same for NodeBB.

Alt :vivaldi_blue:

@julian It seems like account from community.nodebb.org that contain spaces in their usernames don't properly federate right now. Take @[email protected] as an example, I am unable to see or manually fetch any of the posts they've made to this thread. In fact I'm not even able to see their profile, I've tried viewing it from Mastodon and kbin, but no luck.

Another issue I noticed is that I am unable to follow @general-discussion and @nodebb-development from kbin. It only seems to be a problem with kbin because I was able to follow those two categories without any problems from Mastodon. Following @activitypub from kbin worked fine though.

julian

@[email protected] thanks! @The-SkyFoxx already stated that they had issues following others, so I think this is directly related.

I'm not sure what the issue is with kbin but I'll have to register an account and find out

julian

@[email protected] in fact, it seems they both could be related to the same bug related to spaces. Interesting.

I have a feeling this might be a one-liner fix

#famouslastwords

the skyfoxx

@[email protected] said in Pre-Alpha ActivityPub-related bug reports:

It seems like account from community.nodebb.org that contain spaces in their usernames don't properly federate right now.

@julian I tried removing spaces from my username.

But I am still unable to follow anyone right now

Edit: Seems I can now follow. (Maybe changes take a while to propagate?)

However, when I added a space to my username and upper case, I am still able to follow.

TLDR: Fiddling with my username now allows me to follow. But restoring my username to what it was still allows me to follow

julian

@skyfoxx you sure about that? I got a follow notification

the skyfoxx

@julian said in Pre-Alpha ActivityPub-related bug reports:

I got a follow notification

Seems to work now after I changed my username. But for some reason, I cannot 'redo' the error by reverting my username. Quite strange!

the skyfoxx

New bug found @julian
When you try sorting in /world, the posts disappear:

NodeBB Community

A community to talk about development and ask questions about NodeBB modern forum software

NodeBB Community (community.nodebb.org)

crazycells

@skyfoxx @julian actually, they do not disappear, but it only sorts the posts from people you follow...

julian

@oplik0 any thoughts?

crazycells

@julian on the ..../world/all page, whatever topic filter option you click, it takes you to the .../world?sort=... page rather than the /world/all?sort=page...

Screenshot 2024-04-01 at 10.31.40.png

however, I can manually add /all to the url, and it works...

/world/all?sort=most_votes

so, this page shows all the activitypub posts sorted by most votes..

https://community.nodebb.org/world/all?sort=most_votes

crazycells

hi @julian , I just wanted to bring this to your attention... I believe @crazycells@community.nodebb.org and @crazycells should not appear as separate profiles on this forum?

julian

@crazycells am aware thank you

julian

@skyfoxx @[email protected] I started looking into this but wasn't able to easily figure out why kbin wasn't able to find the magazine.

I'll admit I can't easily grok kbin's interface... I was able to (accidentally) add General Discussion to the list of magazines, though?

Error 404 - kbin.social

Explore Fediverse

(kbin.social)

I thought perhaps it was related to dashes not being parsed properly by their mentions matcher, but I can't be entirely sure whether the problem is on my end or theirs!

julian

@skyfoxx @[email protected] I... don't know what I did, but kbin.social is down now! Oh boy.

Angus McLeod

I'm getting this delivery failure trying to send a follow to a category inbox

[Discourse Activity Pub] POST request to https://community.nodebb.org/category/31/inbox failed: Expected([200, 201, 202]) <=> Actual(400 Bad Request)
[Discourse Activity Pub] https://socialhub.activitypub.rocks/ap/actor/797217cf18c0e819dfafc52425590146 failed to deliver to https://community.nodebb.org/category/31/inbox
id: https://socialhub.activitypub.rocks/ap/activity/02feb8d245fa780e4683d03015f1b41e
type: Follow
to: https://community.nodebb.org/category/31
cc:
- https://www.w3.org/ns/activitystreams#Public
published: '2024-04-05T18:09:14Z'
updated: '2024-04-05T18:09:14Z'
actor: !ruby/hash:ActiveSupport::HashWithIndifferentAccess
  id: https://socialhub.activitypub.rocks/ap/actor/797217cf18c0e819dfafc52425590146
  type: Group
  updated: '2024-04-05T12:49:51Z'
  url: https://socialhub.activitypub.rocks/c/meeting/threadiverse-wg/88
  name: Threadiverse Working Group (SocialHub)
  inbox: https://socialhub.activitypub.rocks/ap/actor/797217cf18c0e819dfafc52425590146/inbox
  outbox: https://socialhub.activitypub.rocks/ap/actor/797217cf18c0e819dfafc52425590146/outbox
  followers: https://socialhub.activitypub.rocks/ap/actor/797217cf18c0e819dfafc52425590146/followers
  preferredUsername: threadiverse-wg
  ...

julian

@Angus-McLeod did it just send a 400 or was there an error message involved in the response?

Edit: I added some additional debugging to the S2S validation logic. Can you try to follow @[email protected]? That instance is my testing instance and is a little quieter.

Angus McLeod

@julian I've just sent a few follows from my local to @[email protected]. The code is again 400 and the error message is just "Bad request". I know our follows work with Mastodon (and other Discourse instances), but nevertheless there could be an issue on either end here. Lmk if you find anything in the logs about why it's being rejected.