I think I finally got ActivityPub support for this blog working. On Mastodon, you can search for @en@jlelse.blog and @de@jlelse.blog to follow the English and German blog. You should also be able to search for the URL of any post and reply to it. But remember that it’s only possible for the reply to appear in the “Interactions” if your profile isn’t locked (so your reply is visible to the public). I will write about my implementation later, when I’m sure everything is working correctly.

I wonder if I will even be able to finish my ActivityPub implementation during this holiday. ActivityPub is somehow more complex than expected and unfortunately there are not many implementations to get inspiration from. Meanwhile my idea is to use Hugo to generate ActivityStream JSON files which are then sent to the followers with my own implementation. To do this I have to configure Caddy (the server that delivers my blog) to return the JSON files when an “Accept” HTTP header is received and I have to proxy certain request routes to the implementation. I have to think about it again, work out a plan, implement the whole thing and when this is done, document everything.

Since I have holidays at the moment and don’t want to spend all my time at home in front of the computer, I decided to go hiking today. However, the place I had chosen was not the best choice. In the forest it was very muddy and my shoes and clothes looked accordingly.

It was nevertheless a nice variation.

I started developing my ActivityPub implementation. It will be a little Go application, which sends out every new item in a JSON Feed to the followers. It will be possible to configure multiple feeds and ActivityPub actors, so that I can use it for my blog with one actor for the English blog and one for the German blog. I’ll probably later add some possibility to use it to follow others too. I started by using the code from activityserve and now rewrite most parts.