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• Java socket close timeout

  - by Shayan

  In java when you close a socket it doesn't do anything anymore but it actually closes the tcp connection after a timeout time. I need thousands of sockets and I want them to be closed exactly after closed them not after wasting my time and my resources! What can I do? Thank you.

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• How do I do automatic data serialization of data objects in Haskell

  - by Adam Gent

  One of the huge benefits in languages that have some sort of reflection/introspecition is that objects can be automatically constructed from a variety of sources. For example in Java I can use the same objects for persisting to a db (with Hibernate) serializing to XML (with JAXB) or serializing to JSON (json-lib). You can do the same in Ruby and Python also usually following some simple rules for properties or annotations for Java. Thus I don't need lots "Domain Transfer Objects". I can concentrate on the domain I am working in. It seems in very strict FP like Haskell and Ocaml this is not possible. Particularly Haskell. The only thing I have seen is doing some sort of preprocessing or meta-programming (ocaml). Is it just accepted that you have to do all the transformations from the bottom upwards? In other words you have to do lot of boring work to turn a data type in haskell into JSON/XML/DB Row object and back again into a data object.

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• Using the find command on the ftp server.

  - by dynoboy

  I am logged in to an ftp server and want to find a particular directory within all the directories that exist there. I am looking for a command similar to the Unix find command. Is there something like this available?

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• One-liner to determine who wins in Rock, Paper, Scissors

  - by asmeurer

  So I am writing a simple Rock, Paper, Scissors game in C (it's for an assignment by the way, though the main thing is to learn sockets. Also, I suspect it will be due before I get a good answer). I have it setup as Rock=0, Paper=1, and Scissors=2. Is there an easy one-liner to determine who wins? I tried playing around with it on paper, but I couldn't figure out any patterns.

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• Active Directory: User UPN or DN for NTLM name, using pure LDAP?

  - by Bernd Haug

  I have a Java app that can authenticate to LDAP by logging users into the AD LDAP server with the NTLM name (which they are used to - this is a requirement). I now also need to do authorization, and hence need to find a forest-unique identifier for the user (DN or UPN should work), from which I can further query the directory. The method needs to be absolutely portable, even if the AD is structured in an unusual fashion, otherwise I could just do a string replacement and search for a UPN of "${ntlm-user}@${ntlm-domain}.${configured-trailing-domain}" How can I do this, using pure LDAP? Currently, I'm using the java.naming.directory package, which I'd like to keep using, since it doesn't throw up problems when not binding with a DN but logging in with an NTLM name?

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• Same password for apache and samba with ldap?

  - by barbarossa12d

  Hi, I am experimenting with LDAP. As I see it, apache uses the Unix password field to get the credentials and samba the field that is specific for samba. I just use the LDAP server for a single server, LDAP runs in the same server. What I wanted is to use the same password for apache and samba (and mediawiki etc). Is it possible? If not, are there any alternatives? Thanks!

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• C#: Check if administrator has write access to a file

  - by Bilal Aslam

  The Problem: I need to check if a user (local user or domain user, either one is possible) has write access to a file (if you're curious, %windir%\system32\inetsrv\applicationHost.config. This file is protected by Windows and you need to be an administrator to write to it.) My Solution: The general construct is: using (Impersonator impersonator = new Impersonator(domain, username, password)) { try { using (FileStream fs = File.OpenWrite(appHostConfigPath)) { return true; } catch { return false; } } As you can imagine, the Impersonator class is an IDisposible which uses native interop to call LogonUser. Nothing too creative, and it works. Where I am stuck: On Windows OSs with UAC enabled, this function always return false even if the user specified by username is an administrator. Even though my program is running elevated as an administrator, I suspect what's happening is that the impersonated code is running as a limited administrator. Hence, the method is returning false. I don't have any creative solutions to this. Can anyone help?

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• Mac OS X : Why does chown report "Operation not permitted"?

  - by josef.van.niekerk

  I am trying to do the following on my Mac (10.6.7) : sudo chown myusername:wheel ./entries but Unix/Mac is returning "Operation not permitted". When I ls -lash, the culprit file, it looks as follows: 8 -rwxrwxrwx 1 myusername staff 394B Apr 26 23:26 entries I've tried sudo, I've tried sudo su, nothing works? Any ideas what's up? The files I'm trying to chmod I've copied from my old Ubuntu box, most of the files have successfully chmodded recursively, just this one is stuck and I don't understand why.

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• PowerShell 2.0 and how to handle exceptions ?

  - by Primoz

  Why I get error message printed on the console when running these two simple samples ? I want that I get "Error testing :)" printed on the console insted of: Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) At line:3 char:15 + Get-WmiObject <<<< -ComputerName possibly.nonexisting.domain.com -Credential (Get-Credential) -Class Win32_logicaldisk + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand or Attempted to divide by zero. At line:3 char:13 + $i = 1/ <<<< 0 + CategoryInfo : NotSpecified: (:) [], ParentContainsErrorRecordException + FullyQualifiedErrorId : RuntimeException First example: try { $i = 1/0 Write-Host $i } catch [Exception] { Write-Host "Error testing :)" } Second example: try { Get-WmiObject -ComputerName possibly.nonexisting.domain.com -Credential (Get-Credential) -Class Win32_logicaldisk } catch [Exception] { Write-Host "Error testing :)" } Thank you very much!

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• Fetch MP3 ID3 tag under linux

  - by exic

  Hi, I have a few mp3 files which are not tagged. Winamp has a nice feature which I think is called "autotag" and which is very good at finding out artist and title for files. I'd like something like this for unix, so that I could possibly get artists and titles for my untagged files. Do you know some program which does this? Thanks.

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• apache mod_rewrite redirection problem

  - by warttack

  ok i am having a problem with redirection on apache, i have a domain configured on my hosting account but the domain needs to be redirected to a folder. eg: / is root of server where the mysite.com answers /mysite is where the files are so i got this htaccess code to do the job: Options +FollowSymLinks RewriteEngine on RewriteCond %{HTTP_HOST} ^(www.)?mysite.com$ RewriteCond %{REQUEST_URI} !^/mysite/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /mysite/$1 RewriteCond %{HTTP_HOST} ^(www.)?mysite.com$ RewriteRule ^(/)?$ mysite/index.php [L] plus i made an index.php to redirect to mysite folder. everything seems to be working good the only problem is i added a forum on /mysite/forums/ and for some reason instead of getting mysite.com/forums/ in the browser im getting mysite.com/mysite/forums/ could anyone help me solve this problem? Thanks in advance!

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• Linux Cumulative User, System CPU Usage of Running Process?

  - by dsimcha

  On Linux (and other Unix-like OS's if there's a general answer), is there an easy way to get an output similar to the time command (current real time, user, and system CPU usage totals) for a process that is still running?

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• Is one type of options to ps preferred?

  - by Jim

  GNU ps supports BSD-style options, UNIX-style options, and GNU long options. Is using one of these types (in scripts and at the command line) preferred over the others? I get the impression from the manpage that the functionality of the option styles does not overlap completely.

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• How to create a RESTful web service in asp.net?

  - by jonhobbs

  Hi Guys, I simply want to create a fairly basic REST service, so that I can expose some of the data in my asp.net/SQL server application to the outside works, like this..... http://domain.com/api/offices - would return an xml set of office locations. http://domain.com/api/offices/15 - would return all the details of office 15. It's all fairly standard stuff (including basic authentication) but there seem to be several ways to achieve this using Microsoft technologies and I don't really know where to start. These seem to be the options... 1) WCF 2) ASP.NET MVC 3) ADO.NET Data Services 4) Rest Starter Kit project templates? Which of these is the easiest and most "up-to-date" solution to creating a web service?

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• Is there a way to circumvent CA1726:UsePreferredTerms?

  - by klausbyskov

  I have a problem with the code analysis rule CA1726:UsePreferredTerms. Our business domain has two crucial concepts named Case and Flag. According to CA, it's apparently a deadly sin to use these names, however I really don't care since, as I said, they are crucial concepts in our domain model. CA complains not only about the type declarations but about every method parameter-name aswell. So does anyone know if there is a workaround other than adding loads of suppressions or disabling the rule altogether? Could I add the names to a custom dictionary?

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• Tabbed javascript widget for a Rails app

  - by neilc

  A user registers on our Rails app and they're given javascript to embed a widget in their website. The widget has a tabbed interface, like the JQuery tabs http://stilbuero.de/jquery/tabs_3/. iFrames have been tested, but the widget form factor and cross-domain policy negates the use of iframes. The widget is very dynamic and will often update the DOM with new content - and because of cross-domain policy, it looks as though JSONP is necessary. I understand that 'widget.js.erb' needs to create the widget layout, reference a stylesheet, render the tabs, etc - but once a tab is clicked, how does the widget request the content from the Rails app and render it in the DOM?

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• What sort of programming paradigm is usually used between web and application server in PHP n-tier a

  - by Alex

  What sort ort of programming paradigm (sockets,RPC,Web services,Distributed objects middleware) is usually used between web server and application server in PHP n-tier architecture?Whats the difference of using DOM or Web services for this purpose?

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• Prepend 'www' to an HTTPS url using .htaccess & mod_rewrite

  - by webfac

  I have a dilemma with this one. With the following code I am able to force SSL on any non SSL url, however when the user (and results from Google) take the user to http://mysite.co.za then we hit an issue as the url is then rewritten to https://mysite.co.za Due to the fact that my certificate is bound to www.mysite.co.za it immediately throws a security error because of the missing 'www' in the url. Can someone point out a way to add the www to the domain when the domain starts with HTTPS and not HTTP? Much appreciated. And the current code to add the https:// is as follows: RewriteCond %{HTTP_HOST} !^www\. RewriteCond %{HTTPS}s ^on(s)| RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

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• GWT : Type of Container

  - by moorsu

  I see that there are two ways of transferring objects from server to client Use the same domain object (Contact.java) as used in the service layer. (I do not use hibernate) Use the HashMap to send the domain object field values in the form of Map with the help of BeanUtilsBean class. For multiple objects, use the List. Similary, use the Map to submit form values from client to server Is there any performance advantage for option 1 over 2?. Is there a way to hide the classname/package name that is sent to the browser if we use option 1?. thanks!.

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• Should I be concerned about performance with connections to multiple databases?

  - by Josh Ryan

  I have a PHP app that is running on an Apache server with MySQL databases. Based on the subdomain that users access, I am connecting them to a database (sub1.domain.com connects to database_sub1 and sub2.domain.com connects to database_sub2). Right now there are 10 subdomain-database combos, but that number could potentially grow to well over 100. So, is this a bad thing? Considering my situation, is myslq_pconnect a better way to go? Thanks, and please let me know if more info would be helpful. Josh

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• Jquery Uploader not saving to a folder in the site root

  - by Iain Simpson

  im trying to integrate the Jquery Uploader into my website http://blueimp.github.com/jQuery-File-Upload/ The problem I am having is that I cant seem to get it save the folder I want to to save to. In the UploadHander.php I have the following settings 'script_url' => $this->get_full_url().'/', 'upload_dir' => dirname($_SERVER['SCRIPT_FILENAME']).'./images/machinery/', 'upload_url' => $this->get_full_url().'./images/machinery/', This results in an image uploaded url that looks like this http://domain.com/rcsetch/up/server/php/machinery/image.jpg Other than putting my php files in the root of the website, im not sure how to get it to work, as what I want it to do is upload the files to http://domain.com/images/machinery and not to the create a folder in the directory where all the php files for the uploader are located.

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• What is the recommended way to pass data back and forth between two threads using C#

  - by kenalex

  I am trying to make an app that will pass data between two servers Connection1 and Conenction2 using sockets.What i would like to do is receive data from Connection1 and pass it to Connection2 and vice-versa.Connection1 and Conenction2 are on different threads. What is the best way to call methods on different threads in order to pass data back and forth between them.Both threads will use the same message object type to communicate in both directions between them. Thanks

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• Tricking the server to load files faster?

  - by Yongho

  If we have a website with multiple images and videos, I've read that it's best to serve them from other domains so that the browser can simultaneously download a bunch of files, rather than waiting one by one for each file to be downloaded. For example, if we have a website http://example.com/, we might consider serving: Videos from http://video.example.com/ Images from http://images.example.com/ etc. Question: can we achieve the simultaneous downloading by tricking the browser into believing that the files are hosted there, or do they actually need to be at that location? We can, for example, pretend to serve video from http://video.example.com/ when actually it's just a clever htaccess rewrite that ACTUALLY serves from http://example.com/video.php. In this case, the video is being served from the main domain but because we refer it as http://video.example.com/, it may think that it's another domain and thus load files simultaneously, rather than one by one. Is this feasible?

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• Can only access asp.net app on localhost

  - by Kevin Donn

  I'm trying to get an asp.net application up on IIS on a Windows Server 2008 machine. I can hit the app from localhost, no problem. But I can't access the app using the server's domain name either locally or from another machine on the network. But here's the odd part. I can access a normal file on IIS using the domain name, both from a browser running on the server and from a browser running on another machine on the network. Here's a synopsis ("http" converted to "htp" below because I don't have enough points to have all these links in my message): From IE on the server itself: works htp://localhost/foo.htm works htp://localhost/App works htp://test.foo.com/foo.htm dead htp://test.foo.com/App From IE on another machine: works htp://test.foo.com/foo.htm dead htp://test.foo.com/App And when I say "dead" I mean the request times out. Any ideas?

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• Getting two variables in the URL with htaccess

  - by Wayne

  What way it is to be to get two GET methods in the URL by htaccess? RewriteRule ^adm/(.*)$ adm.php?mode=$1 I've used that for the example URL: http://www.domain.com/adm/thismode Now I want to get two methods like: http://www.domain.com/adm/thismode/othermode I've tried this: RewriteRule ^adm/(.*)$/(.*)$ adm.php?mode=$1&othermode=$2 But doesn't seem to work... how do I get it to do that? EDIT: $mode1 = $_GET['mode']; $mode2 = $_GET['othermode']; Like this...

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