Github user ansell commented on the issue:
https://github.com/apache/any23/pull/41
The culprit will likely be an incompatibility with one of the settings used
by the JSONLD-Java HttpClient instance. Could you try to get a failing test
case that just uses an HttpClient as configured in the following method,
without going through any of the JSONLD-Java or Any23/RDF4J APIs. Ie, just
copy-paste the following method into a new project (using httpclient-4.5.3 and
httpcore-4.4.6 as dependencies) and see if that is enough to fail on your
machine with the failing host you are seeing:
https://github.com/jsonld-java/jsonld-java/blob/master/core/src/main/java/com/github/jsonldjava/utils/JsonUtils.java#L342
Note in particular, that method has "useSystemProperties" so that it pulls
in the standard Java HTTP Proxy settings, which may be relevant to the failures
you are seeing.
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