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• How can I set a connection time out manually?

  - by Daniel

  I use connect(socketfd, (struct sockaddr*)&remoteAddr, sizeof(remoteAddr)) to connect my iPhone to a computer (over WIFI) and it works fine so far. However if the computer is out of reach, my iPhone tries to establish a connection for more than a min. Is there a posibility to set the time manually out to a new value, e.g. 15 sec?

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• how to know which installed devices has internet connection in WINPCAP?

  - by smarej

  i have known that winpcap library enabled a person to obtain advanced information about installed devices... given all the networking devices found in the computer, how will i know which one of this has an internet connection?! thanks:)

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• Using Java, Need to establish an https connection via proxy.

  - by Zombies

  I need to establish and send/read over/from an https connection (to a website of course) but through an http proxy or SOCKS proxy. A few other requirements supports blocking (I can't use non-blocking/nio) isn't set as an environment or some other global scope property (there are multiple threads accessing) I was looking into HttpCore components but I did not see any support for blocking https.

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• Java / MySQL - How to access connection from another class?

  - by Alex

  I'm just getting my head around java (and OOP for that matter), the only thing I am familiar with is MySQL. I need to keep the DB connection open throughout the duration of the application, as well as a server socket. I'm not even sure if they both need separate classes, but here's what I have so far: http://pastebin.com/qzMFFTrY (it wouldn't all go in a code tag) The variable I need is con for line 86.

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• Can't get SWT Display on Mac OS X.

  - by Mattias Holmqvist

  I'm running Mac OS X Snow Leopard and wan't to access the Display from the activator in an OSGi bundle. Below is the start method for my activator: @Override public void start(BundleContext context) throws Exception { ExecutorService service = Executors.newSingleThreadExecutor(); service.execute(new Runnable() { @Override public void run() { Display display = Display.getDefault(); Shell shell = new Shell(display); Text helloText = new Text(shell, SWT.CENTER); helloText.setText("Hello SWT!"); helloText.pack(); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }); } Calling this code in a Windows environment works fine, but deploying on Mac OS X I get the following output: 2009-10-14 17:17:54.050 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x101620d20 of class NSCFString autoreleased with no pool in place - just leaking 2009-10-14 17:17:54.081 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x100119240 of class NSCFNumber autoreleased with no pool in place - just leaking 2009-10-14 17:17:54.084 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x1001024b0 of class NSCFString autoreleased with no pool in place - just leaking 2009-10-14 17:17:54.086 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x7fff701d7f70 of class NSCFString autoreleased with no pool in place - just leaking 2009-10-14 17:17:54.087 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x100113330 of class NSCFString autoreleased with no pool in place - just leaking 2009-10-14 17:17:54.092 java[2010:10003] *** __NSAutoreleaseNoPool(): Object 0x101624540 of class NSCFData autoreleased with no pool in place - just leaking . . . I've used the -XstartOnFirstThread VM argument without any luck. I'm on 64-bit Cocoa but I've also tried 32-bit Cocoa. When trying on Carbon I get the following error: Invalid memory access of location 00000020 eip=9012337c When debugging into the Display class I can see that the Displays[] array only contains null references.

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• How does Subsonic handle connections?

  - by Quintin Par

  In Nhibernate you start a session by creating it during a BeginRequest and close at EndRequest public class Global: System.Web.HttpApplication { public static ISessionFactory SessionFactory = CreateSessionFactory(); protected static ISessionFactory CreateSessionFactory() { return new Configuration() .Configure(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "hibernate.cfg.xml")) .BuildSessionFactory(); } public static ISession CurrentSession { get{ return (ISession)HttpContext.Current.Items["current.session"]; } set { HttpContext.Current.Items["current.session"] = value; } } protected void Global() { BeginRequest += delegate { CurrentSession = SessionFactory.OpenSession(); }; EndRequest += delegate { if(CurrentSession != null) CurrentSession.Dispose(); }; } } What’s the equivalent in Subsonic? The way I understand, Nhibernate will close all the connections at endrequest. Reason: While trouble shooting some legacy code in a Subsonic project I get a lot of MySQL timeouts,suggesting that the code is not closing the connections MySql.Data.MySqlClient.MySqlException: error connecting: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. Generated: Tue, 11 Aug 2009 05:26:05 GMT System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --- MySql.Data.MySqlClient.MySqlException: error connecting: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. at MySql.Data.MySqlClient.MySqlPool.GetConnection() at MySql.Data.MySqlClient.MySqlConnection.Open() at SubSonic.MySqlDataProvider.CreateConnection(String newConnectionString) at SubSonic.MySqlDataProvider.CreateConnection() at SubSonic.AutomaticConnectionScope..ctor(DataProvider provider) at SubSonic.MySqlDataProvider.GetReader(QueryCommand qry) at SubSonic.DataService.GetReader(QueryCommand cmd) at SubSonic.ReadOnlyRecord`1.LoadByParam(String columnName, Object paramValue) My connection string is as follows <connectionStrings> <add name="xx" connectionString="Data Source=xx.net; Port=3306; Database=db; UID=dbuid; PWD=xx;Pooling=true;Max Pool Size=12;Min Pool Size=2;Connection Lifetime=60" /> </connectionStrings>

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• NonStop ODBC: how the connections (ODBC servers) are assigned to CPUs?

  - by Vladimir Dyuzhev

  We have an ODBC pool running on a NonStop server. The pool is connected to SQL/MX. This pool is used by a few external Java applications, each of which has an JDBC pool connected to ODBC pool (e.g. 14 connections per application). With time (after a few application recycles) we see an imbalance between CPUs -- some have 8 ODBC processes running, some only 5. That leads to CPU time imbalance too. Up to this point we assumed that a CPU is assigned to ODBC process in round-robin fashion. That would maintain the number of ODBC processes more or less equally distributed. It's not the case though. Is there any information on how ODBC pool decided which CPU to choose for every new allocated process? Does it look at CPU load? Available memory? Something else? Sadly, even HP's own people (available to us, that is) couldn't answer those questions with certainty. :-(

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• Redmine on Apache2 with Passenger issue

  - by nkr1pt

  I installed Redmine and run it in Apache2 with the Passenger module. Apache2 boots, Passenger module gets loaded and the Redmine welcome page is shown, however when trying to login or navigate to other parts of the Redmine site, the browser keeps loading and loading and loading forever, although the Redmine production.log indicates redirects and HTTP 200 codes in the header, so everything seems to work correctly according to the log. I tested in various browsers. Does anyone have an idea what could be wrong? I will add apache configuration and some relevant log snippets from both apache and redmine hereafter. Apache2 Redmine configuration: DocumentRoot /var/www <Directory /var/www/redmine> RailsEnv production AllowOverride all RailsBaseURI /redmine PassengerResolveSymLinksInDocumentRoot on </Directory> Apache2 error log after booting Apache: [Wed Feb 09 19:59:58 2011] [notice] Apache/2.2.14 (Ubuntu) Phusion_Passenger/3.0.2 DAV/2 SVN/1.6.6 configured -- resuming normal operations Redmine production log after logging in: Logfile created on Wed Feb 09 20:01:40 +0100 2011 Processing WelcomeController#index (for 192.168.1.55 at 2011-02-09 20:01:48) [GET] Parameters: {"action"=>"index", "controller"=>"welcome"} Rendering template within layouts/base Rendering welcome/index Completed in 220ms (View: 96, DB: 16) | 200 OK [http://sirius/redmine] Processing AccountController#login (for 192.168.1.55 at 2011-02-09 20:03:17) [GET] Parameters: {"action"=>"login", "controller"=>"account"} Rendering template within layouts/base Rendering account/login Completed in 85ms (View: 63, DB: 1) | 200 OK [http://sirius/redmine/login] Processing AccountController#login (for 192.168.1.55 at 2011-02-09 20:03:20) [POST] Parameters: {"back_url"=>"http%3A%2F%2Fsirius%2Fredmine", "action"=>"login", "authenticity_token"=>"cEMUZHhRKJU8w3p6d+xQQhJTk4/pnnzUdg5g5fwhxDU=", "username"=>"admin", "controller"=>"account", "password"=>"[FILTERED]", "login"=>"Login \302\273"} Redirected to http://sirius/redmine Completed in 37ms (DB: 6) | 302 Found [http://sirius/redmine/login] Processing WelcomeController#index (for 192.168.1.55 at 2011-02-09 20:03:20) [GET] Parameters: {"action"=>"index", "controller"=>"welcome"} Rendering template within layouts/base Rendering welcome/index Completed in 100ms (View: 77, DB: 6) | 200 OK [http://sirius/redmine] Apache2 error log afterwards: [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/mod_instaweb.cc(247)] ModPagespeed OutputFilter called for request /redmine/login [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/mod_instaweb.cc(272)] unparsed=/redmine/login, absolute_url=http://sirius/redmine/login [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: HtmlParse::StartParse [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/mod_instaweb.cc(299)] Request headers:\nHTTP/1.1 0 Internal Server Error\r\nHost: sirius\r\nUser-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100723 Ubuntu/10.04 (lucid) Firefox/3.6.8\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8\r\nAccept-Language: en-us,en;q=0.5\r\nAccept-Encoding: gzip,deflate\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\nKeep-Alive: 115\r\nConnection: keep-alive\r\nReferer: http://sirius/redmine\r\nCookie: _redmine_session=BAh7BjoPc2Vzc2lvbl9pZCIlNmVlMzFiMDc4MWQxZDU5ZTI5MTk2NjU0NGY3MzJmYzQ%3D--ea4b7adbc35551051632b5544faaad138ae08d90\r\n\r\n [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/mod_instaweb.cc(302)] request-filename=/var/www/redmine/login, uri=/redmine/login [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/mod_instaweb.cc(319)] ModPagespeed Response headers:\nHTTP/1.1 200 OK\r\nStatus: 200\r\nX-Mod-Pagespeed: 0.9.0.0-128\r\n\r\n [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 2157us: HtmlParse::Flush [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 2272us: HtmlParse::CoalesceAdjacentCharactersNodes [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 2342us: HtmlParse::ApplyFilter:AddHead [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 2407us: HtmlParse::SanityCheck [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 2504us: HtmlParse::ApplyFilter:CssCombine [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [warn] [0209/200317:WARNING:net/instaweb/util/google_message_handler.cc(32)] Failed to create or read input resource /redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [warn] [0209/200317:WARNING:net/instaweb/util/google_message_handler.cc(32)] Failed to create or read input resource /redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 3642us: HtmlParse::ApplyFilter:CssFilter [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] http://sirius/redmine/login:9: Failed to load resource http://sirius/redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] http://sirius/redmine/login:17: Failed to load resource http://sirius/redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Failed to load resource http://sirius/redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 4863us: HtmlParse::ApplyFilter:Javascript [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:11: Found script with src /redmine/javascripts/prototype.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/prototype.js?1296181549 [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/prototype.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:12: Found script with src /redmine/javascripts/effects.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/effects.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/effects.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/effects.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:13: Found script with src /redmine/javascripts/dragdrop.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/dragdrop.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:14: Found script with src /redmine/javascripts/controls.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/controls.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/controls.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:15: Found script with src /redmine/javascripts/application.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/application.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 8389us: HtmlParse::SanityCheck [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 8588us: HtmlParse::CoalesceAdjacentCharactersNodes [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 8701us: HtmlParse::ApplyFilter:InlineCss [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: 8701us: HtmlParse::ApplyFilter:InlineCss [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/stylesheets/application.css?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 9199us: HtmlParse::ApplyFilter:InlineJs [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/prototype.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/prototype.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/effects.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] Creating connectionhttp://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/effects.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connectionhttp://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/effects.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/dragdrop.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/dragdrop.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/controls.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/controls.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/application.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/application.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 11398us: HtmlParse::ApplyFilter:ImgRewrite [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 11506us: HtmlParse::ApplyFilter:CacheExtender [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/application.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/stylesheets/application.css?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/prototype.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/prototype.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/effects.js?1296181549 [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/effects.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/dragdrop.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/dragdrop.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/controls.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/controls.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/javascripts/application.js?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/javascripts/application.js?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/jstoolbar.css?1296181549 [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(29)] http://sirius/redmine/login: Couldn't fetch resource /redmine/stylesheets/jstoolbar.css?1296181549 to rewrite. [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 14401us: HtmlParse::ApplyFilter:HtmlWriter [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [notice] [0209/200317:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 15218us: HtmlParse::FinishParse [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:17 2011] [error] [0209/200317:ERROR:net/instaweb/util/google_message_handler.cc(54)] net/instaweb/apache/serf_url_async_fetcher.cc:506: Creating connection [Wed Feb 09 20:03:20 2011] [warn] [client 192.168.1.55] Not GET request: 2., referer: http://sirius/redmine/login [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(247)] ModPagespeed OutputFilter called for request /redmine/login [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(272)] unparsed=/redmine/login, absolute_url=http://sirius/redmine/login [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: HtmlParse::StartParse [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(299)] Request headers:\nHTTP/1.1 0 Internal Server Error\r\nHost: sirius\r\nUser-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100723 Ubuntu/10.04 (lucid) Firefox/3.6.8\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8\r\nAccept-Language: en-us,en;q=0.5\r\nAccept-Encoding: gzip,deflate\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\nKeep-Alive: 115\r\nConnection: keep-alive\r\nReferer: http://sirius/redmine/login\r\nCookie: _redmine_session=BAh7BzoPc2Vzc2lvbl9pZCIlNmVlMzFiMDc4MWQxZDU5ZTI5MTk2NjU0NGY3MzJmYzQ6EF9jc3JmX3Rva2VuIjFjRU1VWkhoUktKVTh3M3A2ZCt4UVFoSlRrNC9wbm56VWRnNWc1ZndoeERVPQ%3D%3D--8b195ac3cab88b5a1f408e3f18aaddc70782140e\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 165\r\n\r\n [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(302)] request-filename=/var/www/redmine/login, uri=/redmine/login [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(319)] ModPagespeed Response headers:\nHTTP/1.1 302 Found\r\nLocation: http://sirius/redmine\r\nStatus: 302\r\nX-Mod-Pagespeed: 0.9.0.0-128\r\n\r\n [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 604us: HtmlParse::Flush [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 697us: HtmlParse::CoalesceAdjacentCharactersNodes [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 758us: HtmlParse::ApplyFilter:AddHead [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 813us: HtmlParse::SanityCheck [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 912us: HtmlParse::CoalesceAdjacentCharactersNodes [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 965us: HtmlParse::ApplyFilter:CssCombine [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1020us: HtmlParse::ApplyFilter:CssFilter [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1073us: HtmlParse::ApplyFilter:Javascript [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1125us: HtmlParse::ApplyFilter:InlineCss [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1179us: HtmlParse::ApplyFilter:InlineJs [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1233us: HtmlParse::ApplyFilter:ImgRewrite [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1285us: HtmlParse::ApplyFilter:CacheExtender [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1338us: HtmlParse::ApplyFilter:HtmlWriter [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine/login:1: 1415us: HtmlParse::FinishParse [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(247)] ModPagespeed OutputFilter called for request /redmine [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(272)] unparsed=/redmine, absolute_url=http://sirius/redmine [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: HtmlParse::StartParse [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(299)] Request headers:\nHTTP/1.1 0 Internal Server Error\r\nHost: sirius\r\nUser-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100723 Ubuntu/10.04 (lucid) Firefox/3.6.8\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8\r\nAccept-Language: en-us,en;q=0.5\r\nAccept-Encoding: gzip,deflate\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\nKeep-Alive: 115\r\nConnection: keep-alive\r\nReferer: http://sirius/redmine/login\r\nCookie: _redmine_session=BAh7BzoMdXNlcl9pZGkGOg9zZXNzaW9uX2lkIiVlYjNmYTY5NmZjNzMwYTdhMjA5ZDJmZmM4MTM0MzcyMw%3D%3D--57a4931aae681664d2a6ff6c039ac84b6ebc9e55\r\nIf-None-Match: "76628aff953f11fbdefb77ce3d575718"\r\n\r\n [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(302)] request-filename=/var/www/redmine, uri=/redmine [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/mod_instaweb.cc(319)] ModPagespeed Response headers:\nHTTP/1.1 200 OK\r\nStatus: 200\r\nX-Mod-Pagespeed: 0.9.0.0-128\r\n\r\n [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: 1870us: HtmlParse::Flush [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: 1973us: HtmlParse::CoalesceAdjacentCharactersNodes [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: 2040us: HtmlParse::ApplyFilter:AddHead [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: 2101us: HtmlParse::SanityCheck [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/util/google_message_handler.cc(48)] http://sirius/redmine:1: 2231us: HtmlParse::ApplyFilter:CssCombine [Wed Feb 09 20:03:20 2011] [notice] [0209/200320:INFO:net/instaweb/apache/serf_url_async_fetcher.cc(632)] Initiating async fetch for http://sirius/redmine/stylesheets/application.css?1296181549

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• SCVMM 2012 R2 - Installing Virtual Switch Fails with Error 2916

  - by Brian M.

  So I've been attempting to teach myself SCVMM 2012 and Hyper-V Server 2012 R2, and I seem to have hit a snag. I've connected my Hyper-V Host to SCVMM 2012 successfully, and created a logical network, logical switch, and uplink port profile (which I essentially blew through with the default settings). However when I attempt to create a virtual switch on my Hyper-V host, I run into an issue. The job will use my logical network settings I created to configure the virtual switch, but when it tries to apply it to the host, it stalls and eventually fails with the following error: Error (2916) VMM is unable to complete the request. The connection to the agent vmhost1.test.loc was lost. WinRM: URL: [h**p://vmhost1.test.loc:5985], Verb: [GET], Resource: [h**p://schemas.microsoft.com/wbem/wsman/1/wmi/root/virtualization/v2/Msvm_ConcreteJob?InstanceID=2F401A71-14A2-4636-9B3E-10C0EE942D33] Unknown error (0x80338126) Recommended Action Ensure that the Windows Remote Management (WinRM) service and the VMM agent are installed and running and that a firewall is not blocking HTTP/HTTPS traffic. Ensure that VMM server is able to communicate with econ-hyperv2.econ.loc over WinRM by successfully running the following command: winrm id –r:vmhost1.test.loc This problem can also be caused by a Windows Management Instrumentation (WMI) service crash. If the server is running Windows Server 2008 R2, ensure that KB 982293 (h**p://support.microsoft.com/kb/982293) is installed on it. If the error persists, restart vmhost1.test.loc and then try the operation again. Refer to h**p://support.microsoft.com/kb/2742275 for more details. I restarted the server, and upon booting am greeted with a message stating "No active network adapters found." I load up powershell and run "Get-NetAdapter -IncludeHidden" to see what's going on, and get the following: Name InterfaceDescription ifIndex Status ---- -------------------- ------- ----- Local Area Connection* 5 WAN Miniport (PPPOE) 6 Di... Ethernet Microsoft Hyper-V Network Switch Def... 10 Local Area Connection* 1 WAN Miniport (L2TP) 2 Di... Local Area Connection* 8 WAN Miniport (Network Monitor) 9 Up Local Area Connection* 4 WAN Miniport (PPTP) 5 Di... Ethernet 2 Broadcom NetXtreme Gigabit Ethernet 13 Up Local Area Connection* 7 WAN Miniport (IPv6) 8 Up Local Area Connection* 9 Microsoft Kernel Debug Network Adapter 11 No... Local Area Connection* 3 WAN Miniport (IKEv2) 4 Di... Local Area Connection* 2 WAN Miniport (SSTP) 3 Di... vSwitch (TEST Test Swi... Hyper-V Virtual Switch Extension Ada... 17 Up Local Area Connection* 6 WAN Miniport (IP) 7 Up Now the machine is no longer visible on the network, and I don't have the slightest idea what went wrong, and more importantly how to undo the damage I caused in order to get back to where I was (save for re-installing Hyper-V Server, but I really would rather know what's going on and how to fix it)! Does anybody have any ideas? Much appreciated!

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• Mail server not sending or receiving after removal from barracuda blacklist to white list

  - by user137765

  Mail server not sending or receiving after removal from barracuda blacklist to white list. I've checked against black lists and the ip and domain are clean. 1and1 are saying its Barracuda black list and barracuda are saying its not blacklisted and that its somethign with 1and1 server. section from log file... Sep 20 04:29:25 vegaserve postfix/smtpd[16906]: connect from mta860.chtah.net[63.236.31.146] Sep 20 04:29:25 vegaserve postfix/smtpd[16070]: connect from host81-136-144-117.in-addr.btopenworld.com[81.136.144.117] Sep 20 04:29:27 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: raidon - short names not allowed from @ [201.80.253.153]ERR: 1348111767.185119 LOGOUT, [email protected], ip=[86.143.136.249], top=0, retr=0, time=151, rcvd=18, sent=283, maildir=/var/qmail/mailnames/mbelectrics.net/mb/Maildir Sep 20 04:29:28 vegaserve pop3d: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:28 vegaserve postfix/smtpd[15388]: connect from mta965.emails.itv.com[8.30.201.55] Sep 20 04:29:29 vegaserve postfix/smtpd[18194]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:29 vegaserve postfix/cleanup[24879]: 95CB31E87556C: message-id=<[email protected] Sep 20 04:29:29 vegaserve postfix/qmgr[14378]: 95CB31E87556C: from=, size=975, nrcpt=1 (queue active) Sep 20 04:29:29 vegaserve postfix/smtpd[18194]: disconnect from uspmta172097.emarsys.net[195.54.172.97] Sep 20 04:29:29 vegaserve postfix/smtp[25748]: 95CB31E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:29 vegaserve postfix/bounce[25897]: warning: 95CB31E87556C: undeliverable postmaster notification discarded Sep 20 04:29:29 vegaserve postfix/qmgr[14378]: 95CB31E87556C: removed Sep 20 04:29:32 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:37 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rei - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:38 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:38 vegaserve postfix/smtpd[19328]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/smtpd[18331]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/smtpd[24464]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/cleanup[24825]: BD1A71E87556C: message-id=<[email protected] Sep 20 04:29:40 vegaserve postfix/qmgr[14378]: BD1A71E87556C: from=, size=673, nrcpt=1 (queue active) Sep 20 04:29:40 vegaserve postfix/smtpd[24464]: disconnect from unknown[118.97.212.190] Sep 20 04:29:40 vegaserve postfix/smtp[25748]: BD1A71E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:40 vegaserve postfix/bounce[25995]: warning: BD1A71E87556C: undeliverable postmaster notification discarded Sep 20 04:29:40 vegaserve postfix/qmgr[14378]: BD1A71E87556C: removed Sep 20 04:29:41 vegaserve postfix/cleanup[24879]: 0A42B1E87556C: message-id=<[email protected] Sep 20 04:29:41 vegaserve postfix/qmgr[14378]: 0A42B1E87556C: from=, size=961, nrcpt=1 (queue active) Sep 20 04:29:41 vegaserve postfix/smtpd[18331]: disconnect from bay0-omc4-s10.bay0.hotmail.com[65.54.190.212] Sep 20 04:29:41 vegaserve postfix/smtp[25748]: 0A42B1E87556C: to=, orig_to=, relay=none, delay=0.03, delays=0.03/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:41 vegaserve postfix/bounce[25897]: warning: 0A42B1E87556C: undeliverable postmaster notification discarded Sep 20 04:29:41 vegaserve postfix/qmgr[14378]: 0A42B1E87556C: removed Sep 20 04:29:43 vegaserve postfix/smtpd[17511]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:43 vegaserve postfix/cleanup[24825]: 8F8991E87556C: message-id=<[email protected] Sep 20 04:29:43 vegaserve postfix/qmgr[14378]: 8F8991E87556C: from=, size=946, nrcpt=1 (queue active) Sep 20 04:29:43 vegaserve postfix/smtpd[17511]: disconnect from blu0-omc4-s22.blu0.hotmail.com[65.55.111.161] Sep 20 04:29:43 vegaserve postfix/smtp[25748]: 8F8991E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.02/0/0.02/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:43 vegaserve postfix/bounce[25995]: warning: 8F8991E87556C: undeliverable postmaster notification discarded Sep 20 04:29:43 vegaserve postfix/qmgr[14378]: 8F8991E87556C: removed Sep 20 04:29:44 vegaserve postfix/cleanup[24879]: 088641E87556C: message-id=<[email protected] Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 088641E87556C: from=, size=1078, nrcpt=1 (queue active) Sep 20 04:29:44 vegaserve postfix/smtpd[19328]: disconnect from smtp10.bis7.eu.blackberry.com[178.239.85.15] Sep 20 04:29:44 vegaserve postfix/smtp[25748]: 088641E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.03/0/0.01/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:44 vegaserve postfix/bounce[25995]: warning: 088641E87556C: undeliverable postmaster notification discarded Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 088641E87556C: removed Sep 20 04:29:44 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rin - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:44 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:44 vegaserve postfix/smtpd[18965]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:44 vegaserve postfix/cleanup[24825]: 946F51E87556C: message-id=<[email protected] Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 946F51E87556C: from=, size=1173, nrcpt=1 (queue active) Sep 20 04:29:44 vegaserve postfix/smtpd[18965]: disconnect from hubrelay-rd.bt.com[62.239.224.99] Sep 20 04:29:44 vegaserve postfix/smtp[25748]: 946F51E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:44 vegaserve postfix/bounce[25897]: warning: 946F51E87556C: undeliverable postmaster notification discarded Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 946F51E87556C: removed Sep 20 04:29:45 vegaserve postfix/smtpd[14816]: connect from col0-omc2-s12.col0.hotmail.com[65.55.34.86] Sep 20 04:29:47 vegaserve postfix/smtpd[16900]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:47 vegaserve postfix/cleanup[24879]: 961721E87556C: message-id=<[email protected] Sep 20 04:29:47 vegaserve postfix/qmgr[14378]: 961721E87556C: from=, size=1082, nrcpt=1 (queue active) Sep 20 04:29:47 vegaserve postfix/smtpd[16900]: disconnect from mta-35d2.livingsocial.com[199.91.53.210] Sep 20 04:29:47 vegaserve postfix/smtp[25748]: 961721E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:47 vegaserve postfix/bounce[25995]: warning: 961721E87556C: undeliverable postmaster notification discarded Sep 20 04:29:47 vegaserve postfix/qmgr[14378]: 961721E87556C: removed Sep 20 04:29:50 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rini - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:50 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:52 vegaserve postfix/smtpd[24478]: connect from col0-omc2-s13.col0.hotmail.com[65.55.34.87] Sep 20 04:29:52 vegaserve postfix/smtpd[18923]: connect from www.idbwplan.com[193.181.254.21] Sep 20 04:29:55 vegaserve postfix/smtpd[15968]: connect from 105-48.mta.dotmailer.com[94.143.105.48] Sep 20 04:29:56 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: ringo - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:56 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:30:00 vegaserve postfix/smtpd[18772]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:30:01 vegaserve postfix/cleanup[24825]: 1DAD71E87556C: message-id=<[email protected] Sep 20 04:30:01 vegaserve postfix/qmgr[14378]: 1DAD71E87556C: from=, size=1022, nrcpt=1 (queue active) Sep 20 04:30:01 vegaserve postfix/smtpd[18772]: disconnect from mail95.us2.mcsv.net[173.231.139.95] Sep 20 04:30:01 vegaserve postfix/smtp[25748]: 1DAD71E87556C: to=, orig_to=, relay=none, delay=0.06, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:30:01 vegaserve postfix/bounce[25897]: warning: 1DAD71E87556C: undeliverable postmaster notification discarded Sep 20 04:30:01 vegaserve postfix/qmgr[14378]: 1DAD71E87556C: removed Sep 20 04:30:02 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: ritsuko - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:30:02 vegaserve postfix/smtpd[16911]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:30:02 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:30:02 vegaserve postfix/cleanup[24879]: 8AADD1E87556C: message-id=<[email protected] Sep 20 04:30:02 vegaserve postfix/qmgr[14378]: 8AADD1E87556C: from=, size=1003, nrcpt=1 (queue active) Sep 20 04:30:02 vegaserve postfix/smtpd[16911]: disconnect from mr133.createsend.com[184.106.86.133] Sep 20 04:30:02 vegaserve postfix/smtp[25748]: 8AADD1E87556C: to=, orig_to=, relay=none, delay=0.02, delays=0.02/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself)

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• Hibernate mapping - "Could not determine type"

  - by Pool

  I currently have the following objects persisting successfully: Person first name, etc. Exams title, date, etc. I'd like to now create a third table Exam results. For this table I believe it should be person ID, exam ID and result, and this is a many to many relationship. @Entity public class ExamResult { private Exam exam; private Person person; private double value; @Id @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE} ) @JoinColumn(name="EXAM_ID") public Exam getExam() { return exam; } public void setExam(Exam exam) { this.exam = exam; } @Id @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE} ) @JoinColumn(name="PERSON_ID") public Person getPerson() { return person; } public void setPerson(Person person) { this.person = person; } public double getValue() { return value; } public void setValue(double value) { this.value = value; } } The error: org.hibernate.MappingException: Could not determine type for: Person, at table: ExamResult, for columns: [org.hibernate.mapping.Column(person)] I think I may be going about this the wrong way, but I can't work out how to proceed with this relationship from the tutorial. Any ideas?

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• Windows TCP timeout

  - by hs2d

  Is there on windows any default timeout for tcp connection? So when no answere is received the connection would be closed. Why im asking is that on one machine the connection is closed afther 5 minutes.(Windows XP) Running the same client - server connection on other machine the connection is kept open forever like it should be. Or maybe there is some global java virtual machine setting somewhere i should know about? The server and client run on the same local machine

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• The embarrassingly obvious about SQL Server CE

  - by Edward Boyle

  I have been working with SQL servers in one form or another for almost two decades now. But I am new to SQL Server Compact Edition. In the past weeks I have been working with SQL Serve CE a lot. The SQL, not a problem, but the engine itself is very new to me. One of the issues I ran into was a simple SQL statement taking excusive amounts of time; by excessive, I mean over one second. I wrote a little code to time the method. Sometimes it took under one second, other times as long as three seconds. –But it was a simple update statement! As embarrassing as it is, why it was slow eluded me. I posted my issue to MSDN and I got a reply from ErikEJ (MS MVP) who runs the blog “Everything SQL Server Compact” . I know little to nothing about SQL Server Compact. This guy is completely obsessed very well versed in CE. If you spend any time in MSDN forums, it seems that this guy single handedly has the answer for every CE question that comes up. Anyway, he said: “Opening a connection to a SQL Server Compact database file is a costly operation, keep one connection open per thread (incl. your UI thread) in your app, the one on the UI thread should live for the duration of your app.” It hit me, all databases have some connection overhead and SQL Server CE is not a database engine running as a service drinking Jolt Cola waiting for someone to talk to him so he can spring into action and show off his quarter-mile sprint capabilities. Imagine if you had to start the SQL Server process every time you needed to make a database connection. Principally, that is what you are doing with SQL Server CE. For someone who has worked with Enterprise Level SQL Servers a lot, I had to come to the mental image that my Open connection to SQL Server CE is basically starting a service, my own private service, and by closing the connection, I am shutting down my little private service. After making the changes in my code, I lost any reservations I had with using CE. At present, my Data Access Layer class has a constructor; in that constructor I open my connection, I also have OpenConnection and CloseConnection methods, I also implemented IDisposable and clean up any connections in Dispose(). I am still finalizing how this assembly will function. – That’s beside the point. All I’m trying to say is: “Opening a connection to a SQL Server Compact database file is a costly operation”

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• Error trapping for a missing data source in a Spring MVC / Spring JDBC web app [migrated]

  - by Geeb

  I have written a web app that uses Spring MVC libraries and Spring JDBC to connect to an Oracle DB. (I don't use any ORM type libraries as I create stored procedures on Oracle that do my stuff and I'm quite happy with that.) I use a connection pool to Oracle managed by the Tomcat container The app generally works absolutely fine by the way! BUT... I noticed the other day when I tried to set up the app on another Tomcat instance that I had forgotten to configure the connection pool and obviously the app could not get hold of an org.apache.commons.dbcp.BasicDataSource object, so it crashed. I define the pool params in the tomcat "context.conf" In my "web.xml" I have: <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/Spring/appServlet/servlet-context.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <!-- Map *everything* to appServlet --> <url-pattern>/</url-pattern> </servlet-mapping> <resource-ref> <description>Oracle Datasource example</description> <res-ref-name>jdbc/ora1</res-ref-name> <res-type>org.apache.commons.dbcp.BasicDataSource</res-type> <res-auth>Container</res-auth> </resource-ref> And I have a Spring "servlet-context.xml" where JNDI is used to map the data source object provided by the connection pool to a Spring bean with the ID of "dataSource": <jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/ora1" resource-ref="true" /> Here's the question: Where do I trap the case where the database cannot be accessed for whatever reason? I don't want the user to see a yard-and-a-half of Java stack trace in their browser, rather a nicer message that tells them there is a database problem etc. It seems that my app tries to configure the "dataSource" bean (in "servlet-context.xml") before any code has tested it can actually provide a dataSource object from the pool?! Maybe I'm not fully understanding exactly what is going on in these stages of the app firing up ... Thanks for any advice!

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• 503.1 Service Unavailable Error Resolution

  - by Lee Brandt

  I was having a hell of a time tonight with my IIS on my development laptop. I don’t remember doing anything to change the IIS settings. I don’t use IIS that much on my dev machine. Usually Cassini is enough for testing my development efforts but tonight I needed to replicate a problem that seems to stem from x86 v x64 mismatch, so I went to create an IIS site pointed to my dev folder. When I did, I got a “503.1 Service Unavailable Error”. First thing I did is go over all my setting to make sure I didn’t screw something up when I set up the site. It was pointing to the right place, and the app pool settings seemed to be alright. However, when I got the 503.1 error and went back to my app pool list, I saw that the app pool I was using was stopped again. I must’ve started and ran it a dozen times to verify that I wasn’t seeing things. After having a colleague look at it and not finding an answer, I started poking around Google. I cam across a post from Phil Haack about the same error. His fix was not mine, however. When I ran his command on the CLI, I didn’t see the reserved routes for HTTP.SYS there. Finally, I looked in the event viewer (where I should have looked as soon as I saw that my app pool was stopping) and saw an error in there. For the IIS-W3SVC-WP Source I saw: The worker process for application pool 'DefaultAppPool' encountered an error 'Cannot read configuration file due to insufficient permissions ' trying to read configuration data from file '\\?\C:\Windows\Microsoft.NET\Framework64\v4.0.30319\CONFIG\machine.config', line number '0'. The data field contains the error code. So I went to that path and saw a little lock on the file icon. I opened up the security tab for file properties and saw that I was missing the IIS_IUSRS group. On a machine that was working correctly, I verified that it indeed had the IIS_IUSRS group set to Read and Read & Execute allowed. So I set mine up the same and voila! Hopefully this helps somebody else, too.

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• Increasing deadlocks with NoLock

  - by Dave Ballantyne

  One on my personnel pet issues is with inappropriate use of the NOLOCK hint (and read uncommitted) .  Dont get me wrong, I have used it in exceptional circumstances , but as a general statement it is a bad thing.  Mostly , when NOLOCK, is used the discussion is around a single statement,  “it runs faster with nolock for XYZ reason”,  however ,IMO, this is quite a shorted sighted view.  What about the Transaction ? What about other concurrent users ?  What is good for one statement in isolation , does not mean that it is good for the system as a whole.  I have seen on a number of occasions deadlocks happen, when tasks that would of(and should of) be blocked continue to execute, only for a deadlock to occur at a later data writing (INSERT,UPDATE,DELETE) statement.  Writers will block writers regardless of isolation level. By Way of (fairly contrived ) example , lets generate some dummy tables and populate with some data drop table a go drop table b go Create Table a ( col1 integer ) go insert into a values(1) insert into a values(2) go Create Table b ( col1 integer ) go insert into b values(1) insert into b values(2) go   Now make two connections. In connection one execute set transaction isolation level read committed BEGIN TRAN Select * from a Select * from b delete from a In connection two execute set transaction isolation level read committed BEGIN TRAN Select * from a Select * from b delete from b Right now the ‘select from a’ in connection two is being blocked by the ‘delete from a’ in connection one.  This is ,IMO, quite a healthy and natural thing to be happening , some see this as a ‘slow down’, a drop in performance.  So, lets reach for our ‘NOLOCK’ magic pill.  Cancel the blocked query and ROLLBACK both transactions, then in connection one execute set transaction isolation level read uncommitted BEGIN TRAN Select * from a Select * from b delete from b and then in connection two execute set transaction isolation level read uncommitted BEGIN TRAN Select * from a Select * from b delete from a We have now solved out performance problem , no more blocking.  Lets finish the work required by the transaction, in connection one , execute delete from a Oh, ‘ performance problem’ again , its now being blocked. Still, lets complete the work in connection two…. delete from b DEADLOCK!!  It is important to be clear about the role of the select statements.  They do not participate within the deadlock, but are preventing code executing that would of.   Additionally, without the select readers to block, a deadlock would occur on the deletes with READ COMMITTED. Naturally, other isolation levels will exhibit different behaviour as to where and when they will and wont block,  and I would encourage you to read BOL and satisfy yourself that you really do NEED to NOLOCK.

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• Credentials Not Passed From SharePoint WebPart to WCF Service

  - by Jacob L. Adams

  I have spent several hours trying to resolve this problem, so I wanted to share my findings in case someone else might have the same problem. I had a web part which was calling out to a WCF service on another server to get some data. The code I had was essentially using System.ServiceModel; using System.ServiceModel.Channels; ... var binding = new CustomBinding( new HttpTransportBindingElement { AuthenticationScheme = System.Net.AuthenticationSchemes.Negotiate } ); var endpoint = new EndpointAddress(new Uri("http://someotherserver/someotherservice.svc")); var someOtherService = new SomeOtherServiceClient(binding, endpoint); string result = someOtherService.SomeServiceMethod(); This code would run fine on my local instance of SharePoint 2010 (Windows 7 64-bit). However, when I would deploy it to the testing environment, I would get a yellow screen of death  with the following message: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'. I then went through the usual checklist of Windows Authentication problems: Check WCF bindings to make sure authentication is set correctly Check IIS to make sure Windows Authentication is enabled and anonymous authentication was disabled. Check to make sure the SharePoint server trusted the server hosting the WCF service Verify that the account that the IIS application pool is running under has access to the other server I then spend lot of time digging into really obscure IIS, machine.config, and trust settings (as well of lots of time on Google and StackOverflow). Eventually I stumbled upon a blog post by Todd Bleeker describing how to run code under the application pool identity. Wait, what? The code is not already running under application pool identity? Another quick Google search led me to an MSDN page that imply that SharePoint indeed does not run under the app pool credentials by default. Instead SPSecurity.RunWithElevatedPrivileges is needed to run code under the app pool identity. Therefore, changing my code to the following worked seamlessly using System.ServiceModel; using System.ServiceModel.Channels; using Microsoft.SharePoint; ... var binding = new CustomBinding( new HttpTransportBindingElement { AuthenticationScheme = System.Net.AuthenticationSchemes.Negotiate } ); var endpoint = new EndpointAddress(new Uri("http://someotherserver/someotherservice.svc")); var someOtherService = new SomeOtherServiceClient(binding, endpoint); string result; SPSecurity.RunWithElevatedPrivileges(()=> { result = someOtherService.SomeServiceMethod(); });

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• Webdav stops working after a few seconds

  - by user214885

  With Ubuntu 13.10, I connect to two different OwnCloud installations and can browse for only a few seconds before it freezes the connection and stops working. When I try to reinstate the connection it fails to even ask for the password (Ubuntu was told to forget the password). I did check the webdav connection through Firefox on two computers and ES File Explorer on android. I know that this isn't a webdav problem and don't know what is happening in Ubuntu to stop being able to read the connection.

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• "Unable to read data from the transport connection: net_io_connectionclosed." - Windows Vista Busine

  - by John DaCosta

  Unable to test sending email from .NET code in Windows Vista Business. I am writing code which I will migrate to an SSIS Package once it its proven. The code is to send an error message via email to a list of recipients. The code is below, however I am getting an exception when I execute the code. I created a simple class to do the mailing... the design could be better, I am testing functionality before implementing more robust functionality, methods, etc. namespace LabDemos { class Program { static void Main(string[] args) { Mailer m = new Mailer(); m.test(); } } } namespace LabDemos { class MyMailer { List<string> _to = new List<string>(); List<string> _cc = new List<string>(); List<string> _bcc = new List<string>(); String _msgFrom = ""; String _msgSubject = ""; String _msgBody = ""; public void test(){ //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("[email protected]"); //set the content mail.Subject = "This is an email"; mail.Body = "this is a sample body"; mail.IsBodyHtml = false; //send the message SmtpClient smtp = new SmtpClient(); smtp.Host = "emailservername"; smtp.Port = 25; smtp.UseDefaultCredentials = true; smtp.Send(mail); } } Exception Message Inner Exception {"Unable to read data from the transport connection: net_io_connectionclosed."} Stack Trace " at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)\r\n at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)\r\n at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)\r\n at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)\r\n at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)\r\n at System.Net.Mail.SmtpClient.GetConnection()\r\n at System.Net.Mail.SmtpClient.Send(MailMessage message)" Outer Exception System.Net.Mail.SmtpException was unhandled Message="Failure sending mail." Source="System" StackTrace: at System.Net.Mail.SmtpClient.Send(MailMessage message) at LabDemos.Mailer.test() in C:\Users\username\Documents\Visual Studio 2008\Projects\LabDemos\LabDemos\Mailer.cs:line 40 at LabDemos.Program.Main(String[] args) in C:\Users\username\Documents\Visual Studio 2008\Projects\LabDemos\LabDemos\Program.cs:line 48 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel) at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly() at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData) at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext) at System.Activator.CreateInstance(ActivationContext activationContext) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.IO.IOException Message="Unable to read data from the transport connection: net_io_connectionclosed." Source="System" StackTrace: at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) InnerException:

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• Node.js Adventure - Storage Services and Service Runtime

  - by Shaun

  When I described on how to host a Node.js application on Windows Azure, one of questions might be raised about how to consume the vary Windows Azure services, such as the storage, service bus, access control, etc.. Interact with windows azure services is available in Node.js through the Windows Azure Node.js SDK, which is a module available in NPM. In this post I would like to describe on how to use Windows Azure Storage (a.k.a. WAS) as well as the service runtime.   Consume Windows Azure Storage Let’s firstly have a look on how to consume WAS through Node.js. As we know in the previous post we can host Node.js application on Windows Azure Web Site (a.k.a. WAWS) as well as Windows Azure Cloud Service (a.k.a. WACS). In theory, WAWS is also built on top of WACS worker roles with some more features. Hence in this post I will only demonstrate for hosting in WACS worker role. The Node.js code can be used when consuming WAS when hosted on WAWS. But since there’s no roles in WAWS, the code for consuming service runtime mentioned in the next section cannot be used for WAWS node application. We can use the solution that I created in my last post. Alternatively we can create a new windows azure project in Visual Studio with a worker role, add the “node.exe” and “index.js” and install “express” and “node-sqlserver” modules, make all files as “Copy always”. In order to use windows azure services we need to have Windows Azure Node.js SDK, as knows as a module named “azure” which can be installed through NPM. Once we downloaded and installed, we need to include them in our worker role project and make them as “Copy always”. You can use my “Copy all always” tool mentioned in my last post to update the currently worker role project file. You can also find the source code of this tool here. The source code of Windows Azure SDK for Node.js can be found in its GitHub page. It contains two parts. One is a CLI tool which provides a cross platform command line package for Mac and Linux to manage WAWS and Windows Azure Virtual Machines (a.k.a. WAVM). The other is a library for managing and consuming vary windows azure services includes tables, blobs, queues, service bus and the service runtime. I will not cover all of them but will only demonstrate on how to use tables and service runtime information in this post. You can find the full document of this SDK here. Back to Visual Studio and open the “index.js”, let’s continue our application from the last post, which was working against Windows Azure SQL Database (a.k.a. WASD). The code should looks like this. 1: var express = require("express"); 2: var sql = require("node-sqlserver"); 3:  4: var connectionString = "Driver={SQL Server Native Client 10.0};Server=tcp:ac6271ya9e.database.windows.net,1433;Database=synctile;Uid=shaunxu@ac6271ya9e;Pwd={PASSWORD};Encrypt=yes;Connection Timeout=30;"; 5: var port = 80; 6:  7: var app = express(); 8:  9: app.configure(function () { 10: app.use(express.bodyParser()); 11: }); 12:  13: app.get("/", function (req, res) { 14: sql.open(connectionString, function (err, conn) { 15: if (err) { 16: console.log(err); 17: res.send(500, "Cannot open connection."); 18: } 19: else { 20: conn.queryRaw("SELECT * FROM [Resource]", function (err, results) { 21: if (err) { 22: console.log(err); 23: res.send(500, "Cannot retrieve records."); 24: } 25: else { 26: res.json(results); 27: } 28: }); 29: } 30: }); 31: }); 32:  33: app.get("/text/:key/:culture", function (req, res) { 34: sql.open(connectionString, function (err, conn) { 35: if (err) { 36: console.log(err); 37: res.send(500, "Cannot open connection."); 38: } 39: else { 40: var key = req.params.key; 41: var culture = req.params.culture; 42: var command = "SELECT * FROM [Resource] WHERE [Key] = '" + key + "' AND [Culture] = '" + culture + "'"; 43: conn.queryRaw(command, function (err, results) { 44: if (err) { 45: console.log(err); 46: res.send(500, "Cannot retrieve records."); 47: } 48: else { 49: res.json(results); 50: } 51: }); 52: } 53: }); 54: }); 55:  56: app.get("/sproc/:key/:culture", function (req, res) { 57: sql.open(connectionString, function (err, conn) { 58: if (err) { 59: console.log(err); 60: res.send(500, "Cannot open connection."); 61: } 62: else { 63: var key = req.params.key; 64: var culture = req.params.culture; 65: var command = "EXEC GetItem '" + key + "', '" + culture + "'"; 66: conn.queryRaw(command, function (err, results) { 67: if (err) { 68: console.log(err); 69: res.send(500, "Cannot retrieve records."); 70: } 71: else { 72: res.json(results); 73: } 74: }); 75: } 76: }); 77: }); 78:  79: app.post("/new", function (req, res) { 80: var key = req.body.key; 81: var culture = req.body.culture; 82: var val = req.body.val; 83:  84: sql.open(connectionString, function (err, conn) { 85: if (err) { 86: console.log(err); 87: res.send(500, "Cannot open connection."); 88: } 89: else { 90: var command = "INSERT INTO [Resource] VALUES ('" + key + "', '" + culture + "', N'" + val + "')"; 91: conn.queryRaw(command, function (err, results) { 92: if (err) { 93: console.log(err); 94: res.send(500, "Cannot retrieve records."); 95: } 96: else { 97: res.send(200, "Inserted Successful"); 98: } 99: }); 100: } 101: }); 102: }); 103:  104: app.listen(port); Now let’s create a new function, copy the records from WASD to table service. 1. Delete the table named “resource”. 2. Create a new table named “resource”. These 2 steps ensures that we have an empty table. 3. Load all records from the “resource” table in WASD. 4. For each records loaded from WASD, insert them into the table one by one. 5. Prompt to user when finished. In order to use table service we need the storage account and key, which can be found from the developer portal. Just select the storage account and click the Manage Keys button. Then create two local variants in our Node.js application for the storage account name and key. Since we need to use WAS we need to import the azure module. Also I created another variant stored the table name. In order to work with table service I need to create the storage client for table service. This is very similar as the Windows Azure SDK for .NET. As the code below I created a new variant named “client” and use “createTableService”, specified my storage account name and key. 1: var azure = require("azure"); 2: var storageAccountName = "synctile"; 3: var storageAccountKey = "/cOy9L7xysXOgPYU9FjDvjrRAhaMX/5tnOpcjqloPNDJYucbgTy7MOrAW7CbUg6PjaDdmyl+6pkwUnKETsPVNw=="; 4: var tableName = "resource"; 5: var client = azure.createTableService(storageAccountName, storageAccountKey); Now create a new function for URL “/was/init” so that we can trigger it through browser. Then in this function we will firstly load all records from WASD. 1: app.get("/was/init", function (req, res) { 2: // load all records from windows azure sql database 3: sql.open(connectionString, function (err, conn) { 4: if (err) { 5: console.log(err); 6: res.send(500, "Cannot open connection."); 7: } 8: else { 9: conn.queryRaw("SELECT * FROM [Resource]", function (err, results) { 10: if (err) { 11: console.log(err); 12: res.send(500, "Cannot retrieve records."); 13: } 14: else { 15: if (results.rows.length > 0) { 16: // begin to transform the records into table service 17: } 18: } 19: }); 20: } 21: }); 22: }); When we succeed loaded all records we can start to transform them into table service. First I need to recreate the table in table service. This can be done by deleting and creating the table through table client I had just created previously. 1: app.get("/was/init", function (req, res) { 2: // load all records from windows azure sql database 3: sql.open(connectionString, function (err, conn) { 4: if (err) { 5: console.log(err); 6: res.send(500, "Cannot open connection."); 7: } 8: else { 9: conn.queryRaw("SELECT * FROM [Resource]", function (err, results) { 10: if (err) { 11: console.log(err); 12: res.send(500, "Cannot retrieve records."); 13: } 14: else { 15: if (results.rows.length > 0) { 16: // begin to transform the records into table service 17: // recreate the table named 'resource' 18: client.deleteTable(tableName, function (error) { 19: client.createTableIfNotExists(tableName, function (error) { 20: if (error) { 21: error["target"] = "createTableIfNotExists"; 22: res.send(500, error); 23: } 24: else { 25: // transform the records 26: } 27: }); 28: }); 29: } 30: } 31: }); 32: } 33: }); 34: }); As you can see, the azure SDK provide its methods in callback pattern. In fact, almost all modules in Node.js use the callback pattern. For example, when I deleted a table I invoked “deleteTable” method, provided the name of the table and a callback function which will be performed when the table had been deleted or failed. Underlying, the azure module will perform the table deletion operation in POSIX async threads pool asynchronously. And once it’s done the callback function will be performed. This is the reason we need to nest the table creation code inside the deletion function. If we perform the table creation code after the deletion code then they will be invoked in parallel. Next, for each records in WASD I created an entity and then insert into the table service. Finally I send the response to the browser. Can you find a bug in the code below? I will describe it later in this post. 1: app.get("/was/init", function (req, res) { 2: // load all records from windows azure sql database 3: sql.open(connectionString, function (err, conn) { 4: if (err) { 5: console.log(err); 6: res.send(500, "Cannot open connection."); 7: } 8: else { 9: conn.queryRaw("SELECT * FROM [Resource]", function (err, results) { 10: if (err) { 11: console.log(err); 12: res.send(500, "Cannot retrieve records."); 13: } 14: else { 15: if (results.rows.length > 0) { 16: // begin to transform the records into table service 17: // recreate the table named 'resource' 18: client.deleteTable(tableName, function (error) { 19: client.createTableIfNotExists(tableName, function (error) { 20: if (error) { 21: error["target"] = "createTableIfNotExists"; 22: res.send(500, error); 23: } 24: else { 25: // transform the records 26: for (var i = 0; i < results.rows.length; i++) { 27: var entity = { 28: "PartitionKey": results.rows[i][1], 29: "RowKey": results.rows[i][0], 30: "Value": results.rows[i][2] 31: }; 32: client.insertEntity(tableName, entity, function (error) { 33: if (error) { 34: error["target"] = "insertEntity"; 35: res.send(500, error); 36: } 37: else { 38: console.log("entity inserted"); 39: } 40: }); 41: } 42: // send the 43: console.log("all done"); 44: res.send(200, "All done!"); 45: } 46: }); 47: }); 48: } 49: } 50: }); 51: } 52: }); 53: }); Now we can publish it to the cloud and have a try. But normally we’d better test it at the local emulator first. In Node.js SDK there are three build-in properties which provides the account name, key and host address for local storage emulator. We can use them to initialize our table service client. We also need to change the SQL connection string to let it use my local database. The code will be changed as below. 1: // windows azure sql database 2: //var connectionString = "Driver={SQL Server Native Client 10.0};Server=tcp:ac6271ya9e.database.windows.net,1433;Database=synctile;Uid=shaunxu@ac6271ya9e;Pwd=eszqu94XZY;Encrypt=yes;Connection Timeout=30;"; 3: // sql server 4: var connectionString = "Driver={SQL Server Native Client 11.0};Server={.};Database={Caspar};Trusted_Connection={Yes};"; 5:  6: var azure = require("azure"); 7: var storageAccountName = "synctile"; 8: var storageAccountKey = "/cOy9L7xysXOgPYU9FjDvjrRAhaMX/5tnOpcjqloPNDJYucbgTy7MOrAW7CbUg6PjaDdmyl+6pkwUnKETsPVNw=="; 9: var tableName = "resource"; 10: // windows azure storage 11: //var client = azure.createTableService(storageAccountName, storageAccountKey); 12: // local storage emulator 13: var client = azure.createTableService(azure.ServiceClient.DEVSTORE_STORAGE_ACCOUNT, azure.ServiceClient.DEVSTORE_STORAGE_ACCESS_KEY, azure.ServiceClient.DEVSTORE_TABLE_HOST); Now let’s run the application and navigate to “localhost:12345/was/init” as I hosted it on port 12345. We can find it transformed the data from my local database to local table service. Everything looks fine. But there is a bug in my code. If we have a look on the Node.js command window we will find that it sent response before all records had been inserted, which is not what I expected. The reason is that, as I mentioned before, Node.js perform all IO operations in non-blocking model. When we inserted the records we executed the table service insert method in parallel, and the operation of sending response was also executed in parallel, even though I wrote it at the end of my logic. The correct logic should be, when all entities had been copied to table service with no error, then I will send response to the browser, otherwise I should send error message to the browser. To do so I need to import another module named “async”, which helps us to coordinate our asynchronous code. Install the module and import it at the beginning of the code. Then we can use its “forEach” method for the asynchronous code of inserting table entities. The first argument of “forEach” is the array that will be performed. The second argument is the operation for each items in the array. And the third argument will be invoked then all items had been performed or any errors occurred. Here we can send our response to browser. 1: app.get("/was/init", function (req, res) { 2: // load all records from windows azure sql database 3: sql.open(connectionString, function (err, conn) { 4: if (err) { 5: console.log(err); 6: res.send(500, "Cannot open connection."); 7: } 8: else { 9: conn.queryRaw("SELECT * FROM [Resource]", function (err, results) { 10: if (err) { 11: console.log(err); 12: res.send(500, "Cannot retrieve records."); 13: } 14: else { 15: if (results.rows.length > 0) { 16: // begin to transform the records into table service 17: // recreate the table named 'resource' 18: client.deleteTable(tableName, function (error) { 19: client.createTableIfNotExists(tableName, function (error) { 20: if (error) { 21: error["target"] = "createTableIfNotExists"; 22: res.send(500, error); 23: } 24: else { 25: async.forEach(results.rows, 26: // transform the records 27: function (row, callback) { 28: var entity = { 29: "PartitionKey": row[1], 30: "RowKey": row[0], 31: "Value": row[2] 32: }; 33: client.insertEntity(tableName, entity, function (error) { 34: if (error) { 35: callback(error); 36: } 37: else { 38: console.log("entity inserted."); 39: callback(null); 40: } 41: }); 42: }, 43: // send reponse 44: function (error) { 45: if (error) { 46: error["target"] = "insertEntity"; 47: res.send(500, error); 48: } 49: else { 50: console.log("all done"); 51: res.send(200, "All done!"); 52: } 53: } 54: ); 55: } 56: }); 57: }); 58: } 59: } 60: }); 61: } 62: }); 63: }); Run it locally and now we can find the response was sent after all entities had been inserted. Query entities against table service is simple as well. Just use the “queryEntity” method from the table service client and providing the partition key and row key. We can also provide a complex query criteria as well, for example the code here. In the code below I queried an entity by the partition key and row key, and return the proper localization value in response. 1: app.get("/was/:key/:culture", function (req, res) { 2: var key = req.params.key; 3: var culture = req.params.culture; 4: client.queryEntity(tableName, culture, key, function (error, entity) { 5: if (error) { 6: res.send(500, error); 7: } 8: else { 9: res.json(entity); 10: } 11: }); 12: }); And then tested it on local emulator. Finally if we want to publish this application to the cloud we should change the database connection string and storage account. For more information about how to consume blob and queue service, as well as the service bus please refer to the MSDN page.   Consume Service Runtime As I mentioned above, before we published our application to the cloud we need to change the connection string and account information in our code. But if you had played with WACS you should have known that the service runtime provides the ability to retrieve configuration settings, endpoints and local resource information at runtime. Which means we can have these values defined in CSCFG and CSDEF files and then the runtime should be able to retrieve the proper values. For example we can add some role settings though the property window of the role, specify the connection string and storage account for cloud and local. And the can also use the endpoint which defined in role environment to our Node.js application. In Node.js SDK we can get an object from “azure.RoleEnvironment”, which provides the functionalities to retrieve the configuration settings and endpoints, etc.. In the code below I defined the connection string variants and then use the SDK to retrieve and initialize the table client. 1: var connectionString = ""; 2: var storageAccountName = ""; 3: var storageAccountKey = ""; 4: var tableName = ""; 5: var client; 6:  7: azure.RoleEnvironment.getConfigurationSettings(function (error, settings) { 8: if (error) { 9: console.log("ERROR: getConfigurationSettings"); 10: console.log(JSON.stringify(error)); 11: } 12: else { 13: console.log(JSON.stringify(settings)); 14: connectionString = settings["SqlConnectionString"]; 15: storageAccountName = settings["StorageAccountName"]; 16: storageAccountKey = settings["StorageAccountKey"]; 17: tableName = settings["TableName"]; 18:  19: console.log("connectionString = %s", connectionString); 20: console.log("storageAccountName = %s", storageAccountName); 21: console.log("storageAccountKey = %s", storageAccountKey); 22: console.log("tableName = %s", tableName); 23:  24: client = azure.createTableService(storageAccountName, storageAccountKey); 25: } 26: }); In this way we don’t need to amend the code for the configurations between local and cloud environment since the service runtime will take care of it. At the end of the code we will listen the application on the port retrieved from SDK as well. 1: azure.RoleEnvironment.getCurrentRoleInstance(function (error, instance) { 2: if (error) { 3: console.log("ERROR: getCurrentRoleInstance"); 4: console.log(JSON.stringify(error)); 5: } 6: else { 7: console.log(JSON.stringify(instance)); 8: if (instance["endpoints"] && instance["endpoints"]["nodejs"]) { 9: var endpoint = instance["endpoints"]["nodejs"]; 10: app.listen(endpoint["port"]); 11: } 12: else { 13: app.listen(8080); 14: } 15: } 16: }); But if we tested the application right now we will find that it cannot retrieve any values from service runtime. This is because by default, the entry point of this role was defined to the worker role class. In windows azure environment the service runtime will open a named pipeline to the entry point instance, so that it can connect to the runtime and retrieve values. But in this case, since the entry point was worker role and the Node.js was opened inside the role, the named pipeline was established between our worker role class and service runtime, so our Node.js application cannot use it. To fix this problem we need to open the CSDEF file under the azure project, add a new element named Runtime. Then add an element named EntryPoint which specify the Node.js command line. So that the Node.js application will have the connection to service runtime, then it’s able to read the configurations. Start the Node.js at local emulator we can find it retrieved the connections, storage account for local. And if we publish our application to azure then it works with WASD and storage service through the configurations for cloud.   Summary In this post I demonstrated how to use Windows Azure SDK for Node.js to interact with storage service, especially the table service. I also demonstrated on how to use WACS service runtime, how to retrieve the configuration settings and the endpoint information. And in order to make the service runtime available to my Node.js application I need to create an entry point element in CSDEF file and set “node.exe” as the entry point. I used five posts to introduce and demonstrate on how to run a Node.js application on Windows platform, how to use Windows Azure Web Site and Windows Azure Cloud Service worker role to host our Node.js application. I also described how to work with other services provided by Windows Azure platform through Windows Azure SDK for Node.js. Node.js is a very new and young network application platform. But since it’s very simple and easy to learn and deploy, as well as, it utilizes single thread non-blocking IO model, Node.js became more and more popular on web application and web service development especially for those IO sensitive projects. And as Node.js is very good at scaling-out, it’s more useful on cloud computing platform. Use Node.js on Windows platform is new, too. The modules for SQL database and Windows Azure SDK are still under development and enhancement. It doesn’t support SQL parameter in “node-sqlserver”. It does support using storage connection string to create the storage client in “azure”. But Microsoft is working on make them easier to use, working on add more features and functionalities.   PS, you can download the source code here. You can download the source code of my “Copy all always” tool here.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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• How can I force mod_perl to only allow one process per connection?

  - by Charles Ma

  I have a perl cgi script that's fairly resource intensive (takes about 2 seconds to finish). This is fine as long as only at most 4 or 5 of them are running at the same time and that's usually the case. The problem is that when a user clicks a link that calls this script, a new process is spawned to handle that connection request, so if a user clicks many times (if they're impatient), the server gets overloaded with new processes running and most of them are redundant. How can I ensure that only one instance of this process is running per host? This is an old system that I'm maintaining which uses an old framework for the frontend, and I would like to avoid using javascript to disable the button client side if possible. Converting this to fast-cgi perl is out of the question as well, again because this is an old system and adding fast-cgi to apache might break a lot of other things that this thing runs.

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• Would a Socket Connection Outperform an Intarvaled Database Sweep and Requests?

  - by Jascha

  I'm building a small chat application to add to an existing framework. There will only be 20-50 users MAX at any one time. I was wondering if I could get away with updating a cache file containing (semi) live chat data for whichever users happen to be chatting just by performing timed queries and regular AJAX refreshes for new data as opposed to learning how to open and maintain a socket connection. I'm sure there are existing chat plug-ins out there. But I just had a hell of a time installing one and I could see building the whole damn thing taking just as much time as plugging one in. Am I off to a bad start? Thanks in advance -J (p.s. this is a semi closed network behind a php login so security isn't a great concern)

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• How to detect open database connection with Hibernate / JPA?

  - by John K

  I am learning JPA w/Hibernate using a Java SE 6 project. I'd simply like to be able to detect if the connection between Hibernate and my database (MS SQL Server) is open. For example, I'd like to be able to detect this, log it, and try reconnecting again in 60 seconds. This is what I thought would work but isOpen() doesn't appear to be what I want (always is true): EntityManagerFactory emf = Persistence.createEntityManagerFactory("rcc", props); if (emf != null && emf.isOpen()) { EntityManager em = emf.createEntityManager(); if (em == null || !emf.isOpen()) // error connecting to database else ... This seems to me to be a simple problem, but I cannot find an answer!

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• How to get reference to SqlConnection (or Connection string) in Castle ActiveRecord?

  - by VoimiX

  how can I get reference to current SqlConnection or Sqlconnection in config? I found http://svn.castleproject.org:8080/svn/castle/trunk/ActiveRecord/Castle.ActiveRecord.Tests/DifferentDatabaseScopeTestCase.cs and code private string GetSqlConnection() { IConfigurationSource config = GetConfigSource(); IConfiguration db2 = config.GetConfiguration(typeof(ActiveRecordBase)); string conn = string.Empty; foreach (IConfiguration child in db2.Children) { if (child.Name == "connection.connection_string") { conn = child.Value; } } return conn; } But I cant understand where I can find "GetConfigSource" implementation? Is this standart Castle helper function or not? I use these namespaces using Castle.ActiveRecord; using NHibernate.Criterion; using NHibernate; using Castle.Core.Configuration; using Castle.ActiveRecord.Framework;

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• How can I use my own connection class with a strongly typed dataset?

  - by Maslow

  I have designed a class with sqlClient.SqlCommand wrappers to implement such functionality as automatic retries on timeout, Async (thread safety), error logging, and some sql server functions like WhoAmI. I've used some strongly typed datasets mainly for display purposes only, but I'd like to have the same database functionality that I use with my class. Is there an interface I can implement or a way to hook my command/connection class into the dataset at design or runtime? Or would I need to somehow write a wrapper for the dataset to implement these types of functions? if this is the only option could it be made generic to wrap anything that inherits from dataset?

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