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java.net.ConnectException: Connection timed out: connect at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1296) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1290) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:944) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:491) at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:757) at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:865) at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:740) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619)Caused by: java.net.ConnectException: Connection timed out: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.http.HttpClient.<init>(HttpClient.java:233) at sun.net.www.http.HttpClient.New(HttpClient.java:306) at sun.net.www.http.HttpClient.New(HttpClient.java:323) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:788) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:729) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:654) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977) at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2052) at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:579) at java.net.URLConnection.getContentLength(URLConnection.java:474) at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:490)