Notices by Sebastian Jambor (crepels@mastodon.social)

@hongminhee the server ran out of disk space. It should be back now.

@pcottle Thanks, that's great! 😀

I see that you are using the _misskey_quote field. If you are able to share, I'd be interested in what made you choose this over quoteUrl or quoteUri. Is there better support for _misskey_quote in other Fediverse services?

Quote posts in Threads now include a link to the ActivityPub data of the quoted posts. This makes it possible for Fediverse services like Firefish and Misskey to fetch the quoted post and show it inline in the quote post. I updated the blog post with some information on this https://seb.jambor.dev/posts/understanding-activitypub-part-4-threads/

Thanks @pcottle for the heads-up, and for some information about design choices that went into this.

@tchambers @js

Misskey uses essentially the same format: a RE: ... in the content field and an additional quoteUrl field which points to the original message. (This makes sense, since Firefish is a fork of Misskey.)
Friendica uses a slightly different format for the content field, but also includes a quoteUrl field.

@FenTiger Thanks :)

I can't really make sense of the instance actor requirement. I only tried this from ActivityPub.Academy (i.e., Mastodon); it would be interesting if there are any differences with other services. If you try this out with your implementation at some point, I'd be interested to know what you find.

The weird implementation of HTTP signatures seems to have been a bug in Threads. It is now fixed and the signatures work as expected. I updated the blog post accordingly.
Thanks @jahfer for looking into this!

New blog post: Understanding ActivityPub - Part 4: Threads

A first detailed look into how Threads implements ActivityPub. Learn about the data that is shared (or not), an interesting implementation of HTTP signatures, and Threads' take on quote posts in ActivityPub.

https://seb.jambor.dev/posts/understanding-activitypub-part-4-threads/

#ActivityPub #Threads #Fediverse

New blog post: Understanding ActivityPub - Part 3: The State of Mastodon

Have you ever wondered why replies to a post show up on some instances but not on others? Or why the boost and like counters on your instance are different than on the original instance? It all boils down to how ActivityPub works. Find out all about it in my new blog post.

https://seb.jambor.dev/posts/understanding-activitypub-part-3-the-state-of-mastodon/

#ActivityPub #Mastodon #Fediverse