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  • my web cam not working prperly in skype 12.04

    - by elvin
    oller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02) 00:1d.3 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02) 00:1d.7 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02) 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 01:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet Controller (rev 01) This is the configuration of my web cam when i typed lspci in terminal; how do i find out what type of cam it is. the command letters i wrote here may be wrong.never mind i wrote from my memory.my web cam shows green colour shade and no proper colour.pls help me to fix this problem.2nd option- if i buy microsoft web cam will the image will get corrected.i think my web cam is hyundai electronics make.

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  • What are all the components of a "Facebook App"?

    - by pnongrata
    I am a developer who has never personally partaken in social media (in any form) for reasons completely outside the scope of this question. I am "off the grid" (no Facebook, Twitter, etc accounts). I'm currently building a web app and would like the app to have a presence on Facebook, and possibly even "port" my app over as a Facebook app. My understanding of Facebook Apps is that they're just normal web apps that get <iframe>d into a Facebook page. The app is actually hosted on your server (not FB's servers). But this got me thinking: Don't Facebook Apps have "profile pages"? Is there anything developers can do to customize the behavior of their own profile pages? Do apps have the ability to do things like MySpace themes used to do (i.e., customize and interact with User profile pages, Groups, etc.)? Do Facebook Apps gain any sort of extra capabilities (inside of Facebook) that a normal web app would not have? It seems to me like if all a Facebook App is, is an iframed-web app, that it would still need to communicate with Facebook via its many APIs, just like a normal app would have to, right? If it's not possible to write an app that can customize the UI or behavior of user profiles and other pages, then how do games like "Farmville" interact with User profiles so that you see updates to profiles like "John Smith reached level 2 of Farmville"? Basically, I'm asking any battle-worn Facebook app developers if my understanding of Facebook Apps is correct, or if I'm missing anything big here. It's my understanding that for security reasons (obviously) Facebook doesn't allow apps to customize anything outside of the iframe it lives in. So if I want my app to appear like it's "interacting" with its Facebook users, it looks like I just need to publish stuff to the users' news feeds to try and encourage people to use my app (please correct me if I'm wrong here!). Thanks in advance for any corrections, clarifications, advice or suggestions!

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  • What are some internet trends that you've noticed over the past ~10 years? [closed]

    - by Michael
    I'll give an example of one that I've noticed: the number of web sites that ask for your email address (GOOG ID, YAHOO! ID, etc.) has skyrocketed. I can come up with no legitimate reason for this other than (1) password reset [other ways to do this], or (2) to remind you that you have an account there, based upon the time of your last visit. Why does a web site need to know your email address (Google ID, etc.) if all you want to do is... download a file (no legit reason whatsoever) play a game (no legit reason whatsoever) take an IQ test or search a database (no legit reason whatsoever) watch a video or view a picture (no legit reason whatsoever) read a forum (no legit reason whatsoever) post on a forum (mildly legit reason: password reset) newsletter (only difference between a newsletter and a blog is that you're more likely to forget about the web site than you are to forget about your email address -- the majority of web sites do not send out newsletters, however, so this can't be the justification) post twitter messages or other instant messaging (mildly legit reason: password reset) buy something (mildly legit reasons: password reset + giving you a copy of a receipt that they can't delete, as receipts stored on their server can be deleted) On the other hand, I can think of plenty of very shady reasons for asking for this information: so the NSA, CIA, FBI, etc. can very easily track what you do by reading your email or asking GOOG, etc. what sites you used your GOOG ID at to use the password that you provide for your account in order to get into your email account (most people use the same password for all of their accounts), find all of your other accounts in your inbox, and then get into all of those accounts sell your email address to spammers These reasons, I believe, are why you are constantly asked to provide your email address. I can come up with no other explanations whatsoever. Question 1: Can anyone think of any legitimate or illegitimate reasons for asking for someone's email address? Question 2: What are some other interesting internet trends of the past ~10 years?

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  • Web application interacts bi-directional with server program?

    - by Roelof Berkepeis
    I want to write a web application to play chess against the engine Crafty. I'm not new to PHP and javascript, but must learn how to interact with a server process : how can a web application and/or (jQuery) ajax interact bi-directionally with a (linux) program running on the server? At this moment i am developing on (Apache) local host. Crafty is installed on my Ubuntu PC. This well-known chess engine has no GUI, it runs in terminal by the command $ /usr/games/crafty and so you can play chess against it and even see it's calculations. I can make Crafty run by PHP, using the functions proc_open() or exec(), and most documentation i found states that the output stream should be a file .. But i think i don't want such setup, because then the webpage should be constanty polling that file (eg. by ajax) to see if some new data was appended, right? How can Crafty talk to the web page directly, saying "i have calculated another variation" or "i have decided a move" etc, then display this info on the web page and let the user give some counter move, just like in terminal. Isn't it possible to use some session / stream / listener? I have no clue at all, can anybody point me in a right direction?

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  • is there a checklist that a small website should

    - by Mecon
    I am not a web developer - this would be my first foray. I can do HTML/CSS/Javascript, but never created a website for a company. If anybody is creating a site for small company (expecting some 10-15 static pages), what kinda things would it need to have? I am thinking of the following: Make the eventual owner buy in his/her name: Domain name, Web Hosting package and Email package. Q - DO Web Developers generally ask their clients to buy this stuff and then ask them to share their passwords? OR - Do Web Developers ship the source files to clients so that they can upload it? Create Cross Browser compatible HTML+CSS+javascript pages Add SEO stuff like Meta tags and xml file for crawler Buy professional images from stock website Q - IS there is a best-practice for this step? Add Copyright stuff. Q - ANY idea about how to do this? Add Faceboook widgets, so people can 'like' my website. Register website somewhere so that its searchable from multiple search-engine/yellopages. Q - DOES such a thing exist? Please check my checklist :) and let me know what you think could be missing? Thanks!

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  • Change XAMPP's htdocs web root folder to another one

    - by vitto
    I'm trying to change the XAMPP's web root default directory /opt/lampp/htocs to another one like /home/me/Dropbox/public_html without success. I've edited the file /opt/lampp/etc/httpd.conf # old line: DocumentRoot "/opt/lampp/htdocs" DocumentRoot "/home/me/Dropbox/public_html" #...etc... # old line: <Directory "/opt/lampp/htdocs"> <Directory "/home/me/Dropbox/Work/public_html"> # # Possible values for the Options directive are "None", "All", # or any combination of: # Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews # etc... I've did this as said in this article: Using Ubuntu One to synchronise htdocs? Then I've restarted Apache and I've got a permission error 403 on every page I've called with the web browser. So I've changed folder and files permission to 755. I've did this as said in this article: What file permissions should I set on web root? The problem still remains the same, I have the 403 error on every page I try to reach with the web browser. I have the same problem on a Mac using XAMPP. So everythig works fine if the folder remains the original /opt/lampp/htocs. How can I change it correctly?

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  • Is there any kind of established architecture for browser based MMO games?

    - by black_puppydog
    I am beginning the development of a broser based game in which players take certain actions at any point in time. Big parts of gameplay will be happening in real life and just have to be entered into the system. I believe a good kind of comparison might be a platform for managing fantasy football, although I have virtually no experience playing that, so please correct me if I am mistaken here. The point is that some events happen in the program (i.e. on the server, out of reach for the players) like pulling new results from some datasource, starting of a new round by a game master and such. Other events happen in real life (two players closing a deal on the transfer of some team member or whatnot - again: have never played fantasy football) and have to be entered into the system. The first part is pretty easy since the game masters will be "staff" and thus can be trusted to a certain degree to not mess with the system. But the second part bothers me quite a lot, especially since the actions may involve multiple steps and interactions with different players, like registering a deal with the system that then has to be approved by the other party or denied and passed on to a game master to decide. I would of course like to separate the game logic as far as possible from the presentation and basic form validation but am unsure how to do this in a clean fashion. Of course I could (and will) put some effort into making my own architectural decisions and prototype different ideas. But I am bound to make some stupid mistakes at some point, so I would like to avoid some of that by getting a little "book smart" beforehand. So the question is: Is there any kind of architectural works that I can read up on? Papers, blogs, maybe design documents or even source code? Writing this down this seems more like a business application with business rules, workflows and such... Any good entry points for that?

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  • When should I start learning a PHP Framework

    - by Festus
    I'm a beginner programmer I have been learning PHP for a while, though not consistently. But for the past few months (say 3 months) I have been a bit consistent in my learning, largely because of a project a friend ask me to do for him since he knew I was into web design. Though I struggled to complete the tiny project for him after about 3 weeks, because I got stuck some times and I have to look up tutorials/references relating to the problem I was trying to solve, but I feel fulfilled been able to accomplish a project and along the way grab most of PHP basics. My interest in Web development has grew higher since completing that project and I have been trying to learn PHP/MySQL as fast as I could, because the same friend want me to do something else for him, which to me is way beyond the basics I know. Though I don't charge him anything, but it gives me a sense of fulfillment. I want to learn a framework, because I heard it can make you accomplish more as a web developer and makes life much easier. Can I learn a framework without having OOP knowledge? I know how to create and use functions, though I don't use it much I know my question is not straight forward, but I know you will understand were I'm coming from and advice me appropriately. I wish to become a professional Web Developer. I really need your professional advice.

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  • How can I be able to create a folder node on companyhome in Alfresco? [migrated]

    - by bluestella
    I am having a hard time looking for an answer to my question. I am trying to create a folder/space in Alfresco. But I don't have any idea doing it? Can someone help me with this? I'm using Java webscript. All I am at is this: package org.alfresco.module.demoscripts; import java.io.IOException; import org.alfresco.web.scripts.AbstractWebScript; import org.alfresco.web.scripts.WebScriptException; import org.alfresco.web.scripts.WebScriptRequest; import org.alfresco.web.scripts.WebScriptResponse; import org.json.JSONException; import org.json.JSONObject; public class SimpleWebScript extends AbstractWebScript { public void execute(WebScriptRequest req, WebScriptResponse res) throws IOException { try { // build a json object JSONObject obj = new JSONObject(); // put some data on it obj.put("field1", "data1"); // build a JSON string and send it back String jsonString = obj.toString(); res.getWriter().write(jsonString); } catch(JSONException e) { throw new WebScriptException("Unable to serialize JSON"); } } }

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  • SharePoint 2010 - Access denied during ApplyWebConfigModifications()

    - by tcoalson
    I have SharePoint 2010 installed on a Windows Server 2008 R2 machine which is also hosting SQL Sever 2008 R2. I am attempting to deploy a solution that includes web parts in the 2010 environment that is working fine in MOSS 2007. The Web Part feature has a feature receiver that updates the web.config. When I try to activate the feature through the Site Collection Feature GUI, I receive an access denied message. I am logged on to the server and in SharePoint with the APP Pool account which is also a member of the domain administrator group, local administrator group and SharePoint Farm Admin group. This account is also dbo on SQL Server. This same feature activates fine using the stsadm command. I have dug into this issue at length and here is what I have found: Looking at the Microsoft assemblies in reflector, my error is coming from the SPWebApplication.ApplyWebConfigModifications() method. I can see the trace statements from SPWebConfigFileChanges.RemoveModificationsWebConfigXMLDocument and SPWebConfigFileChanges.ApplyModificationsWebConfigXMLDocument. The next line is a Save(str). Below is the output from the SharePoint logs that pertain to this error: Apply web config modifications to web app 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation General 8grn Medium WebConfigModification: Applying web config modifications to web app in server tw-s1-m4400-007 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 88gw Medium WebConfigModification: Applying web config modifications to file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/system.web/httpModules Node name add[@name='JivePageController'] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/system.web/httpHandlers Node name add[@path='ScriptResource.axd'] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name [local-name()="dependentAssembly"][/@name="System.Web.Extensions.Design"] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name [local-name()="dependentAssembly"][/@name="System.Web.Extensions"] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name - [local-name()="dependentAssembly"][/@name="System.Web.Extensions"] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name - [local-name()="dependentAssembly"][/@name="System.Web.Extensions.Design"] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/system.web/httpHandlers Node name - add[@path='ScriptResource.axd'] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/system.web/httpModules Node name - add[@name='JivePageController'] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x15C4) 0x1444 SharePoint Foundation Topology e5mb Medium WcfReceiveRequest: LocalAddress: 'http://tw-s1-m4400-007.jivedemo.local:32843/15702467ece1408f881abeabac3b5077/MetadataWebService.svc' Channel: 'System.ServiceModel.Channels.ServiceChannel' Action: xxx MessageId: 'urn:uuid:4e859532-ed7f-4937-8b88-68d3af43d589' 9f403ede-2c94-490b-a05c-e169cc5fe58d 02/24/2010 16:05:41.10 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology f6kh High WebConfigModification: Save of web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config for applying modifications to web app SharePoint - 2008 failed. Error message - Access to the path 'C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config' is denied. 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.10 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8j2o High WebConfigModification: Changes not applied to web application SharePoint - 2008 with Url xxx 5a817a37-7bf6-4d26-be51-207369e38f5b Any help would be appreciated!

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  • Injection of an EJB into a web java class under JBoss 7.1.1

    - by Dobbo
    I am trying to build a website using JBoss 7.1.1 and RESTeasy. I have managed to constructed and deploy and EAR with a both a WAR and an EJB-JAR contained within: voyager-app.ear META-INF/MANIFEST.MF META-INF/application.xml META-INF/jboss-app.xml lib/voyager-lib.jar voyager-adm.war voyager-ejb.jar voyager-web.war So far things are very simple. voyager-adm.war & voyager-lib.jar are empty (just the manifest file) but I know that I'm going to have code for them shortly. There is just one Stateful EJB - HarbourMasterBean (with just a local interface) and a few Database Entity Beans in the EJB jar file: voyager-ejb.jar META-INF/MANIFEST.MF META-INF/persistence.xml com/nutrastat/voyager/db/HarbourMasterBean.class com/nutrastat/voyager/db/HarbourMasterLocal.class com/nutrastat/voyager/db/PortEntity.class com/nutrastat/voyager/db/ShipEntity.class As far as I can tell the EJBs deploy correctly because the database units are created and the log shows that the publication of some HarbourMaster references: java:global/voyager-app/voyager-ejb/harbour-master!com.nutrastat.voyager.db.HarbourMasterLocal java:app/voyager-ejb/harbour-master!com.nutrastat.voyager.db.HarbourMasterLocal java:module/harbour-master!com.nutrastat.voyager.db.HarbourMasterLocal java:global/voyager-app/voyager-ejb/harbour-master java:app/voyager-ejb/harbour-master java:module/harbour-master The problem lies in getting the HarbourMaster EJB injected into my web bean. The reference to it is alway NULL no matter what I try. voyager-web.war META-INF/MANIFEST.MF WEB-INF/web.xml WEB-INF/classes/com/nutrastat/voyager/web/ WEB-INF/classes/com/nutrastat/voyager/web/Ships.class WEB-INF/classes/com/nutrastat/voyager/web/VoyagerApplication.class Ships.java: @Path("fleet") public class Ships { protected transient final Logger log; @EJB private HarbourMasterLocal harbourMaster; public Ships() { log = LoggerFactory.getLogger(getClass()); } @GET @Path("ships") @Produces({"text/plain"}) public String listShips() { if (log.isDebugEnabled()) log.debug("Harbour master value: " + harbourMaster); return "Harbour Master: " + harbourMaster; } } &lt;web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" &gt; <display-name>Voyager Web Application</display-name> <listener> <listener-class> org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap </listener-class> </listener> <servlet> <servlet-name>Resteasy</servlet-name> <servlet-class> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher </servlet-class> <init-param> <param-name> javax.ws.rs.Application </param-name> <param-value> com.nutrastat.voyager.web.VoyagerApplication </param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>Resteasy</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> &lt;/web-app&gt; I have been searching the web for an answer and read a number of places, both on StackOverflow and elsewhere that suggests is can be done, and that the problems lies with configuration. But they post only snippets and I'm never sure if I'm doing things correctly. Many thanks for any help you can provide. Dobbo

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  • Where can I find information on the Get, Set and Address methods for multidimensional System.Array i

    - by Rob Smallshire
    System.Array serves as the base class for all arrays in the Common Language Runtime (CLR). According to this article, For each concrete array type, [the] runtime adds three special methods: Get/Set/Address. and indeed if I disassemble this C# code, int[,] x = new int[1024,1024]; x[0,0] = 1; x[1,1] = 2; x[2,2] = 3; Console.WriteLine(x[0,0]); Console.WriteLine(x[1,1]); Console.WriteLine(x[2,2]); into CIL I get, IL_0000: ldc.i4 0x400 IL_0005: ldc.i4 0x400 IL_000a: newobj instance void int32[0...,0...]::.ctor(int32, int32) IL_000f: stloc.0 IL_0010: ldloc.0 IL_0011: ldc.i4.0 IL_0012: ldc.i4.0 IL_0013: ldc.i4.1 IL_0014: call instance void int32[0...,0...]::Set(int32, int32, int32) IL_0019: ldloc.0 IL_001a: ldc.i4.1 IL_001b: ldc.i4.1 IL_001c: ldc.i4.2 IL_001d: call instance void int32[0...,0...]::Set(int32, int32, int32) IL_0022: ldloc.0 IL_0023: ldc.i4.2 IL_0024: ldc.i4.2 IL_0025: ldc.i4.3 IL_0026: call instance void int32[0...,0...]::Set(int32, int32, int32) IL_002b: ldloc.0 IL_002c: ldc.i4.0 IL_002d: ldc.i4.0 IL_002e: call instance int32 int32[0...,0...]::Get(int32, int32) IL_0033: call void [mscorlib]System.Console::WriteLine(int32) IL_0038: ldloc.0 IL_0039: ldc.i4.1 IL_003a: ldc.i4.1 IL_003b: call instance int32 int32[0...,0...]::Get(int32, int32) IL_0040: call void [mscorlib]System.Console::WriteLine(int32) IL_0045: ldloc.0 IL_0046: ldc.i4.2 IL_0047: ldc.i4.2 IL_0048: call instance int32 int32[0...,0...]::Get(int32, int32) IL_004d: call void [mscorlib]System.Console::WriteLine(int32) where the calls to the aforementioned Get and Set methods can be clearly seen. It seems the arity of these methods is related to the dimensionality of the array, which is presumably why they are created by the runtime and are not pre-declared. I couldn't locate any information about these methods on MSDN and their simple names makes them resistant to Googling. I'm writing a compiler for a language which supports multidimensional arrays, so I'd like to find some official documentation about these methods, under what conditions I can expect them to exist and what I can expect their signatures to be. In particular, I'd like to know whether its possible to get a MethodInfo object for Get or Set for use with Reflection.Emit without having to create an instance of the array with correct type and dimensionality on which to reflect, as is done in the linked example.

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  • What difference between Web Apps & Descktop app shoud one keep in mind to model the system right?

    - by simple
    Sometimes it seems like some architectural techniques are not for the Web application I am building and then I just go and code =(, Though I really want to make a habit to architect system before moving to the code, as when I just code I endup writing some useless components which then I rewrite =(, So can you just point out some differences between web apps and desktop ones ?

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  • Designing an email system to guarantee delivery

    - by GlenH7
    We are looking to expand our use of email for notification purposes. We understand it will generate more inbox volume, but we are being selective about which events we fire notification on in order to keep the signal-to-noise ratio high. The big question we are struggling with is designing a system that guarantees that the email was delivered. If an email isn't delivered, we will consider that an exception event that needs to be investigated. In reality, I say almost guarantees because there aren't any true guarantees with email. We're just looking for a practical solution to making sure the email got there and experiences others have had with the various approaches to guaranteeing delivery. For the TL;DR crowd - how do we go about designing a system to guarantee delivery of emails? What techniques should we consider so we know the emails were delivered? Our biggest area of concern is what techniques to use so that we know when a message is sent out that it either lands in an inbox or it failed and we need to do something else. Additional requirements: We're not at the stage of including an escalation response, but we'll want that in the future or so we think. Most notifications will be internal to our enterprise, but we will have some notifications being sent to external clients. Some of our application is in a hosted environment. We haven't determined if those servers can access our corporate email servers for relaying or if they'll be acting as their own mail servers. Base design / modules (at the moment): A module to assign tracking identification A module to send out emails A module to receive delivery notification (perhaps this is the same as the email module) A module that checks sent messages against delivery notification and alerts on undelivered email. Some references: Atwood: Send some email Email Tracking Some approaches: Request a response (aka read-receipt or Message Disposition Notification). Seems prone to failure since we have cross-compatibility issues due to differing mail servers and software. Return receipt (aka Delivery Status Notification). Not sure if all mail servers honor this request or not Require an action and therefore prove reply. Seems burdensome to force the recipients to perform an additional task not related to resolving the issue. And no, we haven't come up with a way of linking getting the issue fixed to whether or not the email was received. Force a click-through / Other site sign-in. Similar to requiring some sort of action, this seems like an additional burden and will annoy the users. On the other hand, it seems the most likely to guarantee someone received the notification. Hidden image tracking. Not all email providers automatically load the image, and how would we associate the image(s) with the email tracking ID? Outsource delivery. This gets us out of the email business, but goes back to how to guarantee the out-sourcer's receipt and subsequent delivery to the end recipient. As a related concern, there will be an n:n relationship between issue notification and recipients. The 1 issue : n recipients subset isn't as much of a concern although if we had a delivery failure we would want to investigate and fix the core issue. Of bigger concern is n issues : 1 recipient, and we're specifically concerned in making sure that all n issues were received by the recipient. How does forum software or issue tracking software handle this requirement? If a tracking identifier is used, Where is it placed in the email? In the Subject, or the Body?

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  • Help understand GLSL directional light on iOS (left handed coord system)

    - by Robse
    I now have changed from GLKBaseEffect to a own shader implementation. I have a shader management, which compiles and applies a shader to the right time and does some shader setup like lights. Please have a look at my vertex shader code. Now, light direction should be provided in eye space, but I think there is something I don't get right. After I setup my view with camera I save a lightMatrix to transform the light from global space to eye space. My modelview and projection setup: - (void)setupViewWithWidth:(int)width height:(int)height camera:(N3DCamera *)aCamera { aCamera.aspect = (float)width / (float)height; float aspect = aCamera.aspect; float far = aCamera.far; float near = aCamera.near; float vFOV = aCamera.fieldOfView; float top = near * tanf(M_PI * vFOV / 360.0f); float bottom = -top; float right = aspect * top; float left = -right; // projection GLKMatrixStackLoadMatrix4(projectionStack, GLKMatrix4MakeFrustum(left, right, bottom, top, near, far)); // identity modelview GLKMatrixStackLoadMatrix4(modelviewStack, GLKMatrix4Identity); // switch to left handed coord system (forward = z+) GLKMatrixStackMultiplyMatrix4(modelviewStack, GLKMatrix4MakeScale(1, 1, -1)); // transform camera GLKMatrixStackMultiplyMatrix4(modelviewStack, GLKMatrix4MakeWithMatrix3(GLKMatrix3Transpose(aCamera.orientation))); GLKMatrixStackTranslate(modelviewStack, -aCamera.position.x, -aCamera.position.y, -aCamera.position.z); } - (GLKMatrix4)modelviewMatrix { return GLKMatrixStackGetMatrix4(modelviewStack); } - (GLKMatrix4)projectionMatrix { return GLKMatrixStackGetMatrix4(projectionStack); } - (GLKMatrix4)modelviewProjectionMatrix { return GLKMatrix4Multiply([self projectionMatrix], [self modelviewMatrix]); } - (GLKMatrix3)normalMatrix { return GLKMatrix3InvertAndTranspose(GLKMatrix4GetMatrix3([self modelviewProjectionMatrix]), NULL); } After that, I save the lightMatrix like this: [self.renderer setupViewWithWidth:view.drawableWidth height:view.drawableHeight camera:self.camera]; self.lightMatrix = [self.renderer modelviewProjectionMatrix]; And just before I render a 3d entity of the scene graph, I setup the light config for its shader with the lightMatrix like this: - (N3DLight)transformedLight:(N3DLight)light transformation:(GLKMatrix4)matrix { N3DLight transformedLight = N3DLightMakeDisabled(); if (N3DLightIsDirectional(light)) { GLKVector3 direction = GLKVector3MakeWithArray(GLKMatrix4MultiplyVector4(matrix, light.position).v); direction = GLKVector3Negate(direction); // HACK -> TODO: get lightMatrix right! transformedLight = N3DLightMakeDirectional(direction, light.diffuse, light.specular); } else { ... } return transformedLight; } You see the line, where I negate the direction!? I can't explain why I need to do that, but if I do, the lights are correct as far as I can tell. Please help me, to get rid of the hack. I'am scared that this has something to do, with my switch to left handed coord system. My vertex shader looks like this: attribute highp vec4 inPosition; attribute lowp vec4 inNormal; ... uniform highp mat4 MVP; uniform highp mat4 MV; uniform lowp mat3 N; uniform lowp vec4 constantColor; uniform lowp vec4 ambient; uniform lowp vec4 light0Position; uniform lowp vec4 light0Diffuse; uniform lowp vec4 light0Specular; varying lowp vec4 vColor; varying lowp vec3 vTexCoord0; vec4 calcDirectional(vec3 dir, vec4 diffuse, vec4 specular, vec3 normal) { float NdotL = max(dot(normal, dir), 0.0); return NdotL * diffuse; } ... vec4 calcLight(vec4 pos, vec4 diffuse, vec4 specular, vec3 normal) { if (pos.w == 0.0) { // Directional Light return calcDirectional(normalize(pos.xyz), diffuse, specular, normal); } else { ... } } void main(void) { // position highp vec4 position = MVP * inPosition; gl_Position = position; // normal lowp vec3 normal = inNormal.xyz / inNormal.w; normal = N * normal; normal = normalize(normal); // colors vColor = constantColor * ambient; // add lights vColor += calcLight(light0Position, light0Diffuse, light0Specular, normal); ... }

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  • Designing An ACL Based Permission System

    - by ryanzec
    I am trying to create a permissions system where everything is going to be stored in MySQL (or some database) and pulled using PHP for a project management system I am building.  I am right now trying to do it is an ACL kind of way.  There are a number key features I want to be able to support: 1.  Being able to assign permissions without being tied to a specific object. The reason for this is that I want to be able to selectively show/hide elements of the UI based on permissions at a point where I am not directly looking at a domain object instance.  For instance, a button to create a new project should only should only be shown to users that have the pm.project.create permission but obviously you can assign a create permission to an domain object instance (as it is already created). 2.  Not have to assign permissions for every single object. Obviously creating permissions entries for every single object (projects, tickets, comments, etc…) would become a nightmare to maintain so I want to have some level of permission inheritance. *3.  Be able to filter queries based on permissions. This would be a really nice to have but I am not sure if it is possible.  What I mean by this is say I have a page that list all projects.  I want the query that pulls all projects to incorporate the ACL so that it would not show projects that the current user does not have pm.project.read access to.  This would have to be incorporated into the main query as if it is a process that is done after that main query (which I know I could do) certain features like pagination become much more difficult. Right now this is my basic design for the tables: AclEntities id - the primary key key - the unique identifier for the domain object (usually the primary key of that object) parentId - the parent of the domain object (like the project object if this was a ticket object) aclDomainObjectId - metadata about the domain object AclDomainObjects id - primary key title - simple string to unique identify the domain object(ie. project, ticket, comment, etc…) fullyQualifiedClassName - the fully qualified class name for use in code (I am using namespaces) There would also be tables mapping AclEntities to Users and UserGroups. I also have this interface that all acl entity based object have to implement: IAclEntity getAclKey() - to the the unique key for this specific instance of the acl domain object (generally return the primary key or a concatenated string of a composite primary key) getAclTitle() - to get the unique title for the domain object (generally just returning a static string) getAclDisplayString() - get the string that represents this entity (generally one or more field on the object) getAclParentEntity() - get the parent acl entity object (or null if no parent) getAclEntity() - get the acl enitty object for this instance of the domain object (or null if one has not been created yet) hasPermission($permissionString, $user = null) - whether or not the user has the permission for this instance of the domain object static getFromAclEntityId($aclEntityId) - get a specific instance of the domain object from an acl entity id. Do any of these features I am looking for seems hard to support or are just way off base? Am I missing or not taking in account anything in my implementation? Is performance something I should keep in mind?

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  • Changing the Operating System with only Ubuntu installed

    - by Games Brainiac
    I really wanted to dive into the world of Open Source operating systems, so I downloaded the latest version of Ubuntu (13.10), and installed it on a clean(no operating system installed, absolutely nothing) Lenovo ThinkPad machine. After a few days, I wanted to try out a different Operating System (Elementary OS). I downloaded the ISO file, burned it to a USB, tested that the USB booted from a different computer (I have 2, one is the Lenovo, the other a HP). I was able to get the bootscreen, and everything worked like a charm after I set the BIOS to boot from USB Disk Drive instead of HD. After this, I went back to Lenovo, and tried to open up the boot menu, by pressing F12, so that I could load from a temporary device. To my surprise, nothing but the HD was listed. There was no Optical Drive, No USB Drive, absolutely nothing. So, I thought that these devices were probably disabled. So I went into my BIOS and checked to see what was the case. I saw that all my devices were enabled. USB and all the other devices such as network cable and the rest were all enabled. So, I thought this probably had something to do wit UEFI and Legacy Boot options. So, I made sure that both were enabled. This did not solve the problem either. Again, I got nothing but the option to boot from my Hard Disk. I thought the USB had to be at fault. I tried different ports, but to no avail. Next, I tried with a Live CD, which had Ubuntu on it. This failed too. I simply could not boot from anything other than my hard disk. Okay, so at this point, I was pretty desperate, so I installed Boot-Repair through: sudo add-apt-repository ppa:yannubuntu/boot-repair sudo apt-get update sudo apt-get install boot-repair What this did is lead me to GRUB. Ideally, its just a screen that gives me the option to load from Ubuntu or Advanced Settings. The Advanced settings had nothing but Ubuntu options in it. So, I kept on pressing ESC and that led me to the the grub console, and thats where I am right now with my Lenovo. I've also tried updating the BIOS, but Lenovo only has packages for Red Hat and Windows. So, a dead end there too. Right now, I need to know if there is any way that I can just delete everything from my Lenovo? I want to revert it back to its blank factory condition. How can I achieve this? I have tried to elaborate my problem as best I could. If there is any important information that I've missed out, please do not hesitate to leave a comment. I would have included some screen shots, but BIOS screen shots are a little hard to manage. However, I can provide a camera Image of the boot screen if needed (doing that as we speak).

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  • jQuery ui Accordion degrades in IE6 or IE7, but is working in IE8

    - by cfree
    There are two accordions on my page, with custom accordion CSS in another file, differentiated by class and ID names so as not to conflict with each other. The accordions don't show up at all, they just degrade to showing all the content at once, as if all the accordion styling is gone. The accordions are both called around the middle of the page, and there's no difference if they are loaded with $(document).ready. What should I check for in the CSS files? There are no inline-block uses. I am using jQuery 1.3.2.min and jQuery ui 1.7.2, so I'm assuming the autoHeight set to false won't make a difference... This is being used inside a Symfony-based site. Works fine in FF, IE8, Chrome. Not so much in IE6, IE7/IE8 compatibility mode. $(function() { $("#accordion").accordion({ active: false, autoHeight: false, collapsible: true, icons: { 'header': 'ui-icon-carat-1-e', 'headerSelected': 'ui-icon-carat-1-s' }, }); $(".links").accordion({ active: false, autoHeight: false, collapsible: true }); });

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  • UI Automation Button Style Enabled

    - by Victor Gaspar
    Hi, I'm evaluating UI Automation for UI testing for that I have a WPF application with the following button defined: <Button Style="{DynamicResource ButtonStyle}" x:Name="MyBtn"/> when I need to visually disable the button I just change the style so the user is aware that the button is disabled (the colour changed) but still the button is internally enabled so I can still launch the OnClick event in order to show a message when the user clicks on a "disabled" button. Now the problem is that I don't know how to check from UI Automation the Style that its currently applied i.e. if the button is disabled or enabled. Do you know how can I do that? In a normal situation I should do something like that: Automation.Condition cEBtn = new PropertyCondition(AutomationElement.AutomationIdProperty, "MyBtn"); AutomationElement mybtnElement = appRegraceElement.FindFirst(TreeScope.Children, cEBtn); bool disMyBtn = (bool)mybtnElement .GetCurrentPropertyValue(AutomationElement.IsEnabledProperty); but in my case the button is always enabled therefore I need to check the Style applied to the button. Thank you very much. Best regards

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  • Modify Jquery UI slider control

    - by Jean-Yves Deman
    I use the Jquery UI slider control. My slider has a width of 200px. I would like the center of my left handle is shifted 14px to the right and the center of my right handle is offset to the left of 14px. So, my good slider will more than 172px (200-14-14). The background-image measure good 200px. The length of 14px is calculated as follows: width of the handle (28px) / 2. Can you help me solve this mystery? Thank you in advance. .ui-slider .ui-slider-handle { width:28px; height:28px; background:url(images/bulle.png) no-repeat 0 0; overflow: hidden; position:absolute; margin-left:0px; top: -7px; border-style:none; cursor:help; }? I use "margin-left:0px;" to delete the "margin-left:-14px" by default. But, my right handle spring 28px to the right ! Help me please !

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  • WPF: issue updating UI from background thread

    - by Ted Shaffer
    My code launches a background thread. The background thread makes changes and wants the UI in the main thread to update. The code that launches the thread then waits looks something like: Thread fThread = new Thread(new ThreadStart(PerformSync)); fThread.IsBackground = true; fThread.Start(); fThread.Join(); MessageBox.Show("Synchronization complete"); When the background wants to update the UI, it sets a StatusMessage and calls the code below: static StatusMessage _statusMessage; public delegate void AddStatusDelegate(); private void AddStatus() { AddStatusDelegate methodForUIThread = delegate { _statusMessageList.Add(_statusMessage); }; this.Dispatcher.BeginInvoke(methodForUIThread, System.Windows.Threading.DispatcherPriority.Send); } _statusMessageList is an ObservableCollection that is the source for a ListBox. The AddStatus method is called but the code on the main thread never executes - that is, _statusMessage is not added to _statusMessageList while the thread is executing. However, once it is complete (fThread.Join() returns), all the stacked up calls on the main thread are executed. But, if I display a message box between the calls to fThread.Start() and fThread.Join(), then the status messages are updated properly. What do I need to change so that the code in the main thread executes (UI updates) while waiting for the thread to terminate? Thanks.

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  • jQuery UI Accordion 1.6

    - by Josh
    I'm using the jQuery UI Accordion 1.6 (http://docs.jquery.com/UI/Accordion), I've changed it a bit and made it work as I need and want it to work. There is just a few things off about it, but one of the major ones is something I just simply can't figure out how to make it work. The plugin is working as intended, it actually closes, opens, opens again, closes all together, etc. However, I'm trying to get the "Posted by..." information right underneath the Headline text. Also, I want the AUTHOR and 0 comments part to be a separate link, the problem is that they are inside the A CLASS (which opens the accordion). Maybe this isn't even a issue with the plugin, but I've run up on options. The jQuery is calling "A" here: I've tried switching this A to a div, but it just breaks. I thought, "Oh I have to alter my CSS", but either I'm doing it wrong, or its not even a jQuery issue, but a CSS one...I just can't figure this out rahhh@#$! Any help would be appreciated. Here is the example I'm working with; http://www.notedls.com/demo $.extend($.ui.accordion, { defaults: { selectedClass: "selected", alwaysOpen: true, animated: 'slide', event: "click", header: "a", autoheight: true, running: 0, navigationFilter: function() { return this.href.toLowerCase() == location.href.toLowerCase(); } },

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