Github user ajs6f commented on a diff in the pull request: https://github.com/apache/jena/pull/271#discussion_r129900223 --- Diff: jena-arq/src/main/java/org/apache/jena/riot/RDFParserBuilder.java --- @@ -504,8 +504,10 @@ private HttpClient buildHttpClient() { Header header = new BasicHeader(k, v); hdrs.add(header); }); - HttpClient hc = CachingHttpClientBuilder.create().setDefaultHeaders(hdrs).build(); - return hc; + HttpClient hc = HttpOp.createPoolingHttpClientBuilder() --- End diff -- Should we maybe just put the default headers into the clients built by `HttpOp` as options (e.g. `HttpOp.createPoolingHttpClientBuilder(boolean useDefaultAcceptHeaderForRdf)` or something like that?
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