Connection through HttpConfigurable failed

I'm using HttpConfigurable class to obtain a HttpURLConnection in-order to get a connection which respects IDEA's proxy settings. But at the moment, what I get is a connect timeout when I call con.connect(). This only happens for remote connections and works fine for local connections. Is there any other configuration I am missing here?

 HttpURLConnection con = HttpConfigurable.getInstance().openHttpConnection(url);
con.setRequestProperty(HttpHeaders.ACCEPT_ENCODING, MediaType.APPLICATION_JSON);

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