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An exception stacktrace is written to ide.log while connecting to uc and there are connection errors (like proxy not being set, or server is down etc). Since the ide correctly identifies the error and informs the user to verify the proxy etc via a dialog box, the stacktrace itself should not appear in ide.log. Annotation: URL: http://... java.net.UnknownHostException: www.netbeans.org at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:153) at java.net.Socket.connect(Socket.java:452) at java.net.Socket.connect(Socket.java:402) at sun.net.NetworkClient.doConnect(NetworkClient.java:139) at sun.net.www.http.HttpClient.openServer(HttpClient.java:402) at sun.net.www.http.HttpClient.openServer(HttpClient.java:618) at sun.net.www.http.HttpClient.<init>(HttpClient.java:306) at sun.net.www.http.HttpClient.<init>(HttpClient.java:267) at sun.net.www.http.HttpClient.New(HttpClient.java:339) at sun.net.www.http.HttpClient.New(HttpClient.java:320) at sun.net.www.http.HttpClient.New(HttpClient.java:315) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:521) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:498) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:626) at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source) at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.openide.xml.XMLUtil.parse(XMLUtil.java:283) [catch] at org.netbeans.modules.autoupdate.XMLUpdates.parseDocument(XMLUpdates.java:323) at org.netbeans.modules.autoupdate.XMLUpdates.access$500(XMLUpdates.java:38) at org.netbeans.modules.autoupdate.XMLUpdates$2.run(XMLUpdates.java:186) at org.openide.util.Task.run(Task.java:136) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:686)
This looks like a duplicate of http://www.netbeans.org/issues/show_bug.cgi?id=60529. 60529 itself is closed as will-not-fix because "Informational exception is allowed to be written into ide.log." But when the issue has been identified and the user correctly informed, the stacktraces in ide.log themselves do not serve any purpose and possibly should not be written in such cases. The issue also seems to be related to http://www.netbeans.org/issues/show_bug.cgi?id=51421.
This issue is duplicate of #60529 - Jirka explained there why it is printed into the console and I am now sure it is correct. In issue #51421 was exception printed always (no matter whether successful connection or not). So this one is not related to #51421. *** This issue has been marked as a duplicate of 60529 ***
> But when the issue has been identified and the user correctly > informed, the stacktraces in ide.log themselves do not serve any purpose and > possibly should not be written in such cases. I now realise that my above assertion is not correct and jirka is right in saying "Informational exception is allowed to be written into ide.log" ; and the execeptions should be written into log, as they provide more info useful for debugging.