Hey there,
I’m experiencing issues when trying to communicate with some Mastodon instances.
Seems that many admins have a config requirement to only interact with apps/servers that provide user-agent, which I can see the activitypub plugin is not providing.
Do you think you could add a user-agent like this to future versions requests?
‘Discourse-ActivityPub/x.y.z (+https://eg-discourse-domain.com)’ or similar?
This will fix both federation and the ability to link profiles to mastodon instances that have this requirement.
Thank you for your time reviewing this.