I’m trying to figure out how to get the comments of a post given a link to it using ActivityPub.
Based on reading the ActivityPub spec, I thought comments were federated via the replies key of the ActivityPub Object.
This works for Mastodon posts, but not for Lemmy (nor Pleroma). As an example
curl -H "Accept: application/activity+json" https://lemmy.my.id/post/79514 | jq
doesn’t contain a replies key. Yet the comments are federated to Mastodon somehow.
What is going on? How can I get the comment?
Unfortunately I think you’re right. I tested it by trying to load the Lemmy post up on a couple of single-user Mastodon instances, and they failed to load it.
It looks like only Mastodon and PeerTube and maybe a couple others list replies alongside the post. It would be nice if more did because I’m relying on the feature for this project of mine: https://github.com/BentonEdmondson/servitor