Does the #Bluesky bridge thing use some kind of odd `content-type` when requesting profile data?
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Does the #Bluesky bridge thing use some kind of odd
content-typewhen requesting profile data? I'm seeing these errors in my logs when my server tries to retrieve posts (as part of my reply retrieval functions):[2025-12-09T00:59:33Z ERROR enigmatick::retriever] Failed to fetch object from remote. URL: https://bsky.brid.gy/convert/ap/at://did:plc:oofa3qqoiszsmajbigfqskqv/app.bsky.feed.post/3m7egmddbwk2h, Status: 502 Bad Gateway, Body: <!doctype html> <html lang=en> <title>502 Bad Gateway</title> <h1>Bad Gateway</h1> <p>Couldn't fetch https://enigmatick.social/user/jdt as ActivityStreams 2: Couldn't decode as JSON</p>If I'm reading that right, my
retrieveris failing because the bridge is trying to retrieve my profile and can't convert it to JSON. But I verified that my profile is provided as JSON for requests with theseAcceptheader types:application/jsonapplication/activity+jsonapplication/ld+jsonapplication/ld+json; profile="https://www.w3.org/ns/activitystreams
...so I can't figure out what it's complaining about. I'll need to watch my varnish logs to see if I can capture one of the requests live from that perspective.
#ActivityPub
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Does the #Bluesky bridge thing use some kind of odd
content-typewhen requesting profile data? I'm seeing these errors in my logs when my server tries to retrieve posts (as part of my reply retrieval functions):[2025-12-09T00:59:33Z ERROR enigmatick::retriever] Failed to fetch object from remote. URL: https://bsky.brid.gy/convert/ap/at://did:plc:oofa3qqoiszsmajbigfqskqv/app.bsky.feed.post/3m7egmddbwk2h, Status: 502 Bad Gateway, Body: <!doctype html> <html lang=en> <title>502 Bad Gateway</title> <h1>Bad Gateway</h1> <p>Couldn't fetch https://enigmatick.social/user/jdt as ActivityStreams 2: Couldn't decode as JSON</p>If I'm reading that right, my
retrieveris failing because the bridge is trying to retrieve my profile and can't convert it to JSON. But I verified that my profile is provided as JSON for requests with theseAcceptheader types:application/jsonapplication/activity+jsonapplication/ld+jsonapplication/ld+json; profile="https://www.w3.org/ns/activitystreams
...so I can't figure out what it's complaining about. I'll need to watch my varnish logs to see if I can capture one of the requests live from that perspective.
#ActivityPub
@jdt this seems like it could use a @snarfed.org tag :)
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@jdt this seems like it could use a @snarfed.org tag :)
liaizon@social.wake.st I pinged him, he says he can't respond yet because of the aforementioned connection negotiation issue! 🙂
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Does the #Bluesky bridge thing use some kind of odd
content-typewhen requesting profile data? I'm seeing these errors in my logs when my server tries to retrieve posts (as part of my reply retrieval functions):[2025-12-09T00:59:33Z ERROR enigmatick::retriever] Failed to fetch object from remote. URL: https://bsky.brid.gy/convert/ap/at://did:plc:oofa3qqoiszsmajbigfqskqv/app.bsky.feed.post/3m7egmddbwk2h, Status: 502 Bad Gateway, Body: <!doctype html> <html lang=en> <title>502 Bad Gateway</title> <h1>Bad Gateway</h1> <p>Couldn't fetch https://enigmatick.social/user/jdt as ActivityStreams 2: Couldn't decode as JSON</p>If I'm reading that right, my
retrieveris failing because the bridge is trying to retrieve my profile and can't convert it to JSON. But I verified that my profile is provided as JSON for requests with theseAcceptheader types:application/jsonapplication/activity+jsonapplication/ld+jsonapplication/ld+json; profile="https://www.w3.org/ns/activitystreams
...so I can't figure out what it's complaining about. I'll need to watch my varnish logs to see if I can capture one of the requests live from that perspective.
#ActivityPub
Hey jdt@enigmatick.social, sorry for the trouble! We send
Accept: application/activity+json, application/ld+json; profile="https://www.w3.org/ns/activitystreams", text/html; charset=utf-8; q=0.5with our AP fetches, which seems to make enigmatick.social 303 redirect to the HTML profile page, eg/@jdthere.(Sorry for the complicated Accept header! We get URLs from various places, so if a URL isn't an AP id, we want to fall back to handling it as HTML and find its AP object via a rel-alternate link.)
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@julian@activitypub.space My guess is that his JSON processor is choking on a non-standard tag I have in my profile (e.g.,
keysorephemeral.webfinger). I should clean up the latter since it's intended for client operations only.But it is valid JSON either way. The
ephemeralobject might cause a JSON-LD parser to choke since I don't declare it in the@context. -
@julian@activitypub.space My guess is that his JSON processor is choking on a non-standard tag I have in my profile (e.g.,
keysorephemeral.webfinger). I should clean up the latter since it's intended for client operations only.But it is valid JSON either way. The
ephemeralobject might cause a JSON-LD parser to choke since I don't declare it in the@context.jdt@enigmatick.social I'm sure julian will be able to solve this compatibility issue between NodeBB and Fedibridge together with snarfed@mas.to and when he does, it will be a great day for the Fediverse! :blush:
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@julian@activitypub.space I think I see the issue on @snarfed's post on your site (thanks @snarfed). I don't currently handle
application/activity+jsonrequests for the URL (i.e., https://enigmatick.social/@jdt). I only handle those on the ID (i.e., https://enigmatick.social/user/jdt).I don't see any harm in adding that to the URL, so I'll add a
301to redirectapplication/activity+jsonrequests for/@jdtto/user/jdt.It's odd, though - my logs seem to indicate that the bridge server is requesting
/user/jdtalready. -
@julian@activitypub.space I see the issue clearly now and can reproduce it (thanks @snarfed). It's just the complexity of the
Acceptheader - I'll dig into why mynginxconfiguration isn't handling that well. -
@julian@activitypub.space I see the issue clearly now and can reproduce it (thanks @snarfed). It's just the complexity of the
Acceptheader - I'll dig into why mynginxconfiguration isn't handling that well.@jdt@enigmatick.social It's actually in my application code:
if let Some(accept) = headers.get(header::ACCEPT) { if let Ok(accept_str) = accept.to_str() { if accept_str.contains("text/html") { log::debug!("Redirecting to presentation page"); return Ok(AbstractResponse::Redirect(Redirect::to(&format!( "/@{username}" )))); } if accept_str.contains("application/activity+json") { log::debug!("Returning application/activity+json"); return Ok(AbstractResponse::ActivityJson(ActivityJson(actor))); } if accept_str.contains("application/ld+json") { log::debug!("Returning application/ld+json"); return Ok(AbstractResponse::LdJson(LdJson(actor))); } } }Just a priority issue with the existence of
text/html. I'll rearrange. -
@jdt@enigmatick.social It's actually in my application code:
if let Some(accept) = headers.get(header::ACCEPT) { if let Ok(accept_str) = accept.to_str() { if accept_str.contains("text/html") { log::debug!("Redirecting to presentation page"); return Ok(AbstractResponse::Redirect(Redirect::to(&format!( "/@{username}" )))); } if accept_str.contains("application/activity+json") { log::debug!("Returning application/activity+json"); return Ok(AbstractResponse::ActivityJson(ActivityJson(actor))); } if accept_str.contains("application/ld+json") { log::debug!("Returning application/ld+json"); return Ok(AbstractResponse::LdJson(LdJson(actor))); } } }Just a priority issue with the existence of
text/html. I'll rearrange.@jdt@enigmatick.social Fixed. My code handles the
Acceptheader per RFC specifications now (i.e., by explicit weight first and by order second). -
@julian@activitypub.space BTW, I love that your interface uses rich formatting for markdown code blocks - so many platforms just phone that bit in.
Enigmatick uses highlight.js too, so I tend to use that a lot.
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@julian@activitypub.space BTW, I love that your interface uses rich formatting for markdown code blocks - so many platforms just phone that bit in.
Enigmatick uses highlight.js too, so I tend to use that a lot.
jdt@enigmatick.social thanks! Yeah it was important to me to get that right. That little highlight library has been chugging along all this time lol.
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@julian @silverpill ActivityPub API clients dont need their server to backfill thanks to proxyURL, but Actors will look like they haven’t posted 😢
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@silverpill @julian @general account backfilling is issue number THIRTY FOUR in mastodon and has >700 thumbs, >200 comments hemming and hawing about how possible it would be for TEN YEARS.
the solution is just "enumerate the outbox" and it's 200 lines.
like we already have a mechanism for reply controls: the reply collection.
for fine-grained post visibility: access control on the outbox collection.
broadcasting feeds and posts between instances: collections
migrations: collections
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@silverpill @julian @general Collections are one of the best parts of activitypub/streams and i have no idea why nobody uses them or works on them. like if we embraced the underlying graph structure of the data and used the canonicalization algos that have been developed in the meantime we get all the good parts of atproto (mostly efficient updating the pds system) basically for free
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@fabio@manganiello.eu @fabio@manganiello.blog @blog omg thank you for the python lib. i was getting ready to write one but extremely good to see i can draw from (credit/depend on/etc.) prior art. adding to the inspo docs!!!
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@silverpill @julian@activitypub.space I believe @hollo does it as well.
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@julian Yes, to backfill a profile. It is a manual action.
I don't know who else does that, but @jonny is working on a adding automatic profile backfill to Mastodon: https://github.com/mastodon/mastodon/pull/34597
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@silverpill@mitra.social I recall Mitra may be one of a select few 😝
Do you use it to backfill a profile? How often do you query the outbox?
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If you investigate NodeBB's actors, all of their outboxes return an empty OrderedCollection because I simply haven't gotten around to it yet, and I don't know many implementations that read it.
I read from outboxes all the time. But I can't do that with NodeBB 😢
