Method createURLConnection in HTTPClientInvoker contains some error.
See code:
if(proxyHost == null) { // have found that the actual system property to be set can differ between VMs, // so will try all the ones I know of. proxyHost = System.getProperty("http.proxyHost"); if(proxyHost == null) { proxyHost = System.getProperty("proxyHost"); } // since not set by metadata, need to check if proxy turned off by property setting String proxyOnString = System.getProperty("http.proxySet"); if(proxyOnString == null) { proxyOnString = System.getProperty("proxySet"); } if(proxyOnString != null) { proxyOn = Boolean.getBoolean(proxyOnString); } }