Setting HTTP client options for federation requests with rdf4j-workbench

[hmottestad]

Discussed in https://github.com/eclipse-rdf4j/rdf4j/discussions/5120

^{Originally posted by tkuhn September 2, 2024} Hi all,

I am using the latest version of the RDF4J Workbench via Docker, and I am wondering whether there is a way to set HTTP client options (version, pooling, timeouts) for the connections made when federation is applied (so the request to URL in "service <URL> { ... }"?

We have a use case where we use this federation extensively, and it normally works well, but starts to hang after a number of hours or days. My suspicion is that it has something to do with the HTTP requests triggered by the service keywords, but I couldn't find any way how I could play around with the options of that HTTP client. Any ideas?

Tobias