Seeming inability to fetch Hubzilla objects

[aliceif]

Both in the admin federation page and in clients' search bar, retrieving posts from Hubzilla such as https://hub.utsukta.org/item/368dc0ca-da0a-4d16-99bd-cc1047d8ecd0 fails. Fedify lookup works though.

[dahlia]

This issue is a problem that occurs on two different layers. First, it is because Hubzilla uses an incorrect syntax of the Link header in the HTTP response of the actor object:

Link: ...,<https://hub.utsukta.org/channel/sk>; rel="alternate"; type="application/ld+json; profile="https://www.w3.org/ns/activitystreams"",...

If you look closely, you will see that the type parameter value of the link https://hub.utsukta.org/channel/sk contains a quotation mark but has not been escaped. This header should be fixed as follows:

Link: ...,<https://hub.utsukta.org/channel/sk>; rel="alternate"; type="application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"",...

Secondly, when Fedify encounters a Link header with incorrect syntax, it fails the lookup process entirely. This is not technically a bug, but it is not a robust behavior.

I will report the first issue to the Hubzilla project, and for the second issue, I will fix Fedify and release a new version, and then Hollo will be able to use the new version of Fedify.

[dahlia]

Filed an issue about this on the Hubzilla's issue tracker.

[dahlia]

Fixed in Hollo 0.3.2.