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Articles indexed in March 2010

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  • Lingering tcp connection in LISTEN state

    - by Silvio Donnini
    My java application can sometimes be killed by an external script. This can be done either with SIGTERM or with SIGKILL. The application is a server which receives many connections per second, and it can be killed while trying to serve them. I would like to restart the application whenever it's killed, so I have prepared a script for that purpose. The problem is that, once the app has been killed, the new application instance can't bind to the port used by the previous instance, because the "Address is already in use". The previous instance's process has been definitely terminated, anyway the offending listening port is still there, but it is assigned to bash (or sh on other machines). Obviouly, my goal is to restart the application and let it bind successfully to the previous address. I've tried waiting more than 200 seconds before restarting to no avail, anyway I can't afford to wait that much. I've encountered this problem on all the machines I've ran the application (which is a jetty server with java 1.6). Any suggestion is appreciated, thanks, Silvio

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  • vista server 2008 web edition cant change permissions

    - by minus4
    hi there, Im used to using windows server 2003 but decided to get a Vista web edition for IIS7 and to run our MVC applications on. I have installed copSSH that i use for SFTP, and when i upload my files i am unable to change persmissions or take ownership or anything when logged in as an administrator. when i try to go to permissions i get: The permissions on uploads are incorrectly ordered, which may cause some entries to be ineffective. and all permissions are the grayed out. i have tried to use icacls to reset ownership and also tried to give myself full control through icacls however all attempts are met with a access is denied message and failed processing 669 files. all i wish to do is set up write and delete permissions on an upload folder for a CMS systems admin area, but i am a week into looking into this and i am still no wiser. Please could someone give some sound advice so i can get this running smooth thanks p.s i have added the copSSH notes as i think that when i SFTP the files to the server, this may somehow have some involvement in messing up permissions

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  • Possible to IPSec VPN Tunnel Public IP Addresses?

    - by caleban
    A customer uses an IBM SAS product over the internet. Traffic flows from the IBM hosting data center to the customer network through Juniper VPN appliances. IBM says they're not tunneling private IP addresses. IBM says they're tunneling public IP addresses. Is this possible? What does this look like in the VPN configuration and in the packets? I'd like to know what the source/destination ip/ports would look like in the encrypted tunneled IPSec Payload and in the IP packet carrying the IPSec Payload. IPSec Payload: source:1.1.1.101:1001 destination:2.2.2.101:2001 IP Packet: source:1.1.1.1:101 destination:2.2.2.1:201 Is it possible to send public IP addresses through an IPSec VPN tunnel? Is it possible for IBM to send a print job from a server on their network using the static-nat public address over a VPN to a printer at a customer network using the printer's static-nat public address? Or can a VPN not do this? Can a VPN only work with interesting traffic from and to private IP addresses?

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  • RAID 5 configuration and future expansion

    - by Alexis Hirst
    hi, I am building a PC to act as a file server among other things, and I was wondering whether it is a good idea to create 2 partitions on the RAID 5 array, one for OS one for data, or to have a separate disk for OS and use array for data. Also, one day i may want to add another disk to the array, so would there be any issues if I had the OS partition on the RAID5 array when it came to resizing the data partition?

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  • SEO Website Positioning and History of Search Engines

    In this article I want to discuss about these main points: the evolution of methods of positioning SEO, the positioning strategy of the site, the placement site in terms of investments. A brief history of modern search engines and the introduction of sophisticated indexing techniques that produce results with higher quality will be shown in this article.

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  • Sending mail using SmtpClient in .net

    - by Manish Gupta
    I am unable to send the mail using smtp client. here is the code: SmtpClient client=new SmtpClient("Host"); client.Credentials=new NetworkCredential("username", "password"); MailMessage mailMessage = new MailMessage(); mailMessage.from="[email protected]"; mailMessage.To.Add("[email protected]"); mailMessage.body="body"; mailMessage.subject="subject"; client.Send(mailMessage); The problem is that when I use this code in ASP.NET application, I do not recieve any mails. When in asp.net I change the from mail address to username given in NetworkCredential, I recieve mails. But in C# windows application, I can get emails, even if sender's email address is not valid. Thanks in advance....

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  • AccessControlException when trying to redeploy webapp to Tomcat using Netbeans

    - by Venc
    I'm getting the following error trying redeploy an webapp on Tomcat from within Netbeans 6.8. It has probably something to do with the new deploy on save and hot swap functionality. Any ideas how to resolve this issue? INFO: Error registering wrapper with jmx StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CubeAdSaSim2] Catalina:j2eeType=WebModule,name=//localhost/CubeAdSaSim2,J2EEApplication=none,J2EEServer=none java.security.AccessControlException: access denied (javax.management.MBeanTrustPermission register) java.security.AccessControlException: access denied (javax.management.MBeanTrustPermission register) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323) at java.lang.SecurityManager.checkPermission(SecurityManager.java:568) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.checkMBeanTrustPermission(DefaultMBeanServerInterceptor.java:1824) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:310) at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482) at org.apache.tomcat.util.modeler.Registry.registerComponent(Registry.java:805) at org.apache.catalina.core.StandardContext.registerJMX(StandardContext.java:5281) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4482) at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:377) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:196) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619)

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  • Intellij Grails and Git

    - by WaZ
    I want to backup my code using smart Git. As a start I am a bit confused, IntelliJ has created two folders for my GRails project: these reside in 1) C:\Documents and Settings\me\.grails\1.2.1\projects and 2) C:\Documents and Settings\me\IdeaProjects\ The 1) contains a plugins folder which contains directories and files of plugins I am using inside my project. Do I have to include both 1) and 2) directories inside GIT? If yes what can I ignore? If no which of the files do I have to include Thanks, Much appreciated, WB

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  • what is duck typing?

    - by ashish yadav
    I recently read an article about duck-typing.It said about calling functions of different classes using object of any class. Is it true?And how will the compiler do it on runtime? I apologize if i am not clear.But it really fascinates me , if we could do it dynamically. So if u people got any idea.I am all ears. thank you!! how will the function be accessed by object of any other class. that violates the basic principle of OOP.and that too dynamically during runtime. And is this feature possible in case of OOP languages?

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  • When should I use OperationContextScope inside of a WCF service?

    - by blinton
    I'm currently working on a WCF service that reaches out to another service to submit information in a few of its operations. The proxy for the second service is generated through the strongly typed ProxyFactory<T> class. I haven't experienced any issues but have heard I should do something like the following when making the call: using (new OperationContextScope((IContextChannel)_service)) _service.Send(message); So my question is: when is creating this new OperationContextScope appropriate, and why? Thanks!

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  • Prevent * to be expanded in the bash script

    - by Alex Farber
    Linux bash script: #!/bin/bash function Print() { echo $1 } var="*" Print $var Execution results: alex@alex-linux:~/tmp$ ./sample-script sample-script "*" is expanded to the list of files, which is actually script itself. How can I prevent this and see actual variable value? In general case, var can be more complicated than "*", for example: "home/alex/mydir/*".

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  • Regex: Match opening/closing chars with spaces

    - by Israfel
    I'm trying to complete a regular expression that will pull out matches based on their opening and closing characters, the closest I've gotten is ^(\[\[)[a-zA-Z.-_]+(\]\]) Which will match a string such as "[[word1]]" and bring me back all the matches if there is more than one, The problem is I want it to pick up matchs where there may be a space in so for example "[[word1 word2]]", now this will work if I add a space into my pattern above however this pops up a problem that it will only get one match for my entire string so for example if I have a string "Hi [[Title]] [[Name]] [[surname]], How are you" then the match will be "[[Title]] [[Name]] [[surname]]" rather than 3 matches "[[Title]]", "[[Name]]", "[[surname]]". I'm sure I'm just a char or two away in the Regex but I'm stuck, How can I make it return the 3 matches. Thanks

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  • Loading fixtures in django unit tests

    - by loder
    I'm trying to start writing unit tests for django and I'm having some questions about fixtures: I made a fixture of my whole project db (not certain application) and I want to load it for each test, because it looks like loading only the fixture for certain app won't be enough. I'd like to have the fixture stored in /proj_folder/fixtures/proj_fixture.json. I've set the FIXTURE_DIRS = ('/fixtures/',) in my settings.py. Then in my testcase I'm trying fixtures = ['proj_fixture.json'] but my fixtures don't load. How can this be solved? How to add the place for searching fixtures? In general, is it ok to load the fixture for the whole test_db for each test in each app (if it's quite small)? Thanks!

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  • Parameter based bindings in ninject 2.0

    - by Przemaas
    I want to use conditional binding in ninject, based on passed parameters. I have something like below: public class Subject { } public interface ITarget { } public class Target1 : ITarget { } public class Target2 : ITarget { } And now I need to instantiate ITarget interface: public void MethodName(IKernel kernel) { ITarget target1 = kernel.Get<ITarget>(new Parameter("name", new Subject(), true)); // Should be instance of Target1 ITarget target2 = kernel.Get<ITarget>(); // Should be instance of Target2 } I have problems to define proper bindings. I tried the following: kernel.Bind<ITarget>().To<Target1>().When(Predicate); kernel.Bind<ITarget>().To<Target2>(); private bool Predicate(IRequest request) { IParameter parameter = request.Parameters.Count == 0 ? null : request.Parameters[0]; if (parameter == null) { return false; } object parameterValue = parameter.GetValue( /*what to put here?*/); return parameterValue != null && parameterValue.GetType().IsAssignableFrom(typeof(Subject)); } but I don't know how to get value of passed parameter. I need to pass IContext instance to GetValue method, but don't know how to get valid instance of IContext. Or maybe there is better way to accomplish my task? Regards

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  • Does "for" in .Net Framework 4.0 execute loops in parallel? Or why is the total not the sum of the p

    - by Shiraz Bhaiji
    I am writing code to performance test a web site. I have the following code: string url = "http://xxxxxx"; System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch(); System.Diagnostics.Stopwatch totalTime = new System.Diagnostics.Stopwatch(); totalTime.Start(); for (int i = 0; i < 10; i++) { stopwatch.Start(); WebRequest request = HttpWebRequest.Create(url); WebResponse webResponse = request.GetResponse(); webResponse.Close(); stopwatch.Stop(); textBox1.Text += "Time Taken " + i.ToString() + " = " + stopwatch.Elapsed.Milliseconds.ToString() + Environment.NewLine; stopwatch.Reset(); } totalTime.Stop(); textBox1.Text += "Total Time Taken = " + totalTime.Elapsed.Milliseconds.ToString() + Environment.NewLine; Which is giving the following result: Time Taken 0 = 88 Time Taken 1 = 161 Time Taken 2 = 218 Time Taken 3 = 417 Time Taken 4 = 236 Time Taken 5 = 217 Time Taken 6 = 217 Time Taken 7 = 218 Time Taken 8 = 409 Time Taken 9 = 48 Total Time Taken = 257 I had expected the total time to be the sum of the individual times. Can anybody see why it is not?

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  • Stack Trace in error in Webpage in ASP not in my code?

    - by MarceloRamires
    I'm new to web-development in ASP, and I'm experiencing a problem where I try to access a certain page through a link and I get an error, the first part says it's an exception, then tips on debugging and then the stacktrace. What happens is that this code isn't on my application, I've had errors like this before, and the peace of code that appeared usually helped me a lot.

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