dbpedia/extraction-framework

Linked Data enforces HTTPS but has redirects downgrading to HTTP

JJ-Author opened this issue · 2 comments

JJ-Author commented

Where did the problem occur (e.g. dbpedia.org/sparql, lookup, spotlight)?

Please give the full URL, if possible

Linked Data interface of dbpedia.org ( http://dbpedia.org/resource/.. )

Problem description

when looking at the redirect chain I identified a problem. Linked Data enforces https but then has a fallback to http which does not make sense to me and can break downloading data. (I remember if you download files with vanilla Java e.g. from the databus/collections (whereas the databus file identifiers use https) you have a problem with files that point to non-https download locations (so original download url is not https. fix applied to solve this dbpedia/dbpedia-databus-collection-downloader@6091021)

http://dbpedia.org/resource/Berlin --[303]--> https://dbpedia.org/resource/Berlin --[303]--> http://dbpedia.org/data/Berlin.ttl -[303]-> https://dbpedia.org/data/Berlin.ttl

Expected behaviour

Fix option 1: https not enforced when rdf mimetypes are requested (for html mimetype https enforcing makes sense and this is probalby what broke it, a wrong lets-encrypt auto setting)
http://dbpedia.org/resource/Berlin --[303]--> http://dbpedia.org/data/Berlin.ttl
Fix option 2: https enforced
http://dbpedia.org/resource/Berlin --[303]--> https://dbpedia.org/resource/Berlin --[303]--> https://dbpedia.org/data/Berlin.ttl

Request/Reproduction

Give the link or request, so the problem can be reproduced. Ideally, this would be a unix curl command.