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• How can I email a vCard to users who are unable to download it?

  - by Zachary Lewis

  I have created vCards for the people in my business, and they are great for users on standard browsers; however, users browsing on a mobile device (notably iPhone) are unable to download and view my vCard. Is there a service that I can direct them to that will allow them to receive an email containing my vCard, or is there a simple way I can set this up myself? I am running my site on WordPress, and initial attempts have failed spectacularly. I'd like for them to be given the option to perform either action, but have the predominant action more prominently visible (probably via user agent detection). Something along the lines of: It looks like you're on an iPhone! It's a bummer they can't download vCards, but if you enter your email address, we'll wrap one up and send it your way! Don't worry, we won't send you junk email. Heck, we don't even save your email address! [email protected] Think you've got it all figured out? Fine, download the vCard instead! If you know of a service or simple-to-implement PHP library (or WordPress plug-in), please let me know! If not, let me know what the best solution to this problem is!

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• Traffic estimation for a multiplayer flash game

  - by Steve Addington

  hey, i want to know if my rough traffic estimations are right, it would be for a pretty simple realtime flashgame in the style of haxball (but not as a soccer game) heres a video of it http://www.youtube.com/watch?v=z_xBdFg1RcI So here comes my estimation, i dont know if they are realistic! i hope someone can help me. consider the packet attached as a typical one sent every 200ms, its 148bytes + 64 bytes of header will make around a 200bytes packet. The server will receive 200bytes x 6 players x 5 times a sec=6000bytes/s=5.85Kbytes/s=46.9kbit/s plus he has to send all back to the players, so at this point are 94Kbit/s.The server received all the information, perform the definitive calculation and send the new position to all players, in a bigger packet of around 900bytes that have to be delivered to the others 6, which makes 900bytes x 6 players x 5 times a sec=27000bytes/s=26Kbytes/s=210kbit/s. overall that would be 26kbyte per second. thats like 130mb traffic per hour for a 6player room. but somehow i think the numbers are too high? that would be really much traffic for such a simple game. did i calculate something wrong?

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• sending php mail from localhost

  - by SimplySimon

  I have installed php, mySQL, postfix and sendmail and have set up a simple email script on my local host server. mail() returns 1 (TRUE) when I send an e-mail, however the email does not arrive at the destination. Installation The mail functions are part of the PHP core. There is no installation needed to use these functions. Requirements For the mail functions to be available, PHP requires an installed and working email system. The program to be used is defined by the configuration settings in the php.ini file. Runtime Configuration The behavior of the mail functions is affected by settings in the php.ini file. Mail configuration options: Name Default Description Changeable sendmail_path NULL Unix systems only: Specifies where the sendmail program can be found (usually /usr/sbin/sendmail or /usr/lib/sendmail) PHP_INI_SYSTEM I found it at /usr/lib/sendmail however, I can not find the configuration file, which is where I assume my problem is, as I have not told anything which server I am using to send my mail through. If anyone can help me I would be grateful.

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• Sponsor the Hottest .NET Community Event in Germany: dotnet Cologne 2011

  - by WeigeltRo

  The “dotnet Cologne” conference organized by the NET usergroups Bonn and Cologne quickly has become the .NET community event in Germany. So when we opened the registration for dotnet Cologne 2011 on Monday, we expected some interest. But we didn’t expect the 200 “early bird” seats to be gone in less than three hours! And the registrations at normal price keep coming in, so it looks like this event will sell out even earlier than last year. In December I wrote about sponsorship opportunities at the dotnet Cologne 2011 – and why it’s a good idea to be a sponsor at this particular conference. If you are interested in becoming a sponsor: We still offer a wide variety of sponsorship packages in different sizes. At our new, larger, event location, we still have space for exhibition booths. Last year’s exhibitors were very happy and had many interesting conversations with the attendees. And this year we planned for longer breaks between sessions, which means event more time for presenting your products. And yes, German developers understand English demos. But maybe a booth is a bit too much for you. With the Bronze package, you can make sure the attendees receive promotional material of your company in their bags – for a fraction of what you’d pay at a commercial conference. Or you could sponsor a couple of licenses of your product for the raffle at the end of the day. If you want to learn more, just send an email to Roland.Weigelt at dotnet-koelnbonn.de and I’ll send you our sponsor information.

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• Generalized Ajax function [migrated]

  - by TecBrat

  Not sure if this question will be considered "off topic". If it is, I'll remove it, but: I hadn't see this yet so I wrote it and would like to know if this is a good approach to it. Would anyone care to offer improvements to it, or point me to an example of where someone else has already written it better? function clwAjaxCall(path,method,data,asynch) { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } if(asynch) { xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { //alert(xmlhttp.responseText); //var newaction=xmlhttp.responseText; //alert('Action becomes '+newaction); return xmlhttp.responseText; } } } if(method=='GET'){path=path+"/?"+data;} xmlhttp.open(method,path,asynch); if(method=='GET'){xmlhttp.send();}else{xmlhttp.send(data);} if (!asynch){return xmlhttp.responseText;} } I then called it like Just Testing <script type="text/javascript" src="/mypath/js/clwAjaxCall.js"></script> <script type="text/javascript"> document.write("<br>More Testing"); document.write(clwAjaxCall("http://www.mysite.com",'GET',"var=val",false)); </script>

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• save data in the database to xml in c [closed]

  - by Jayanth N

  I have some data in the database. I want those data in database to be stored as an xml file. I'm using postgresql 9.1 for database, for xml processing I'm using libxml (http://xmlsoft.org/). I'm writing the code in C language. Please help me. Detailed explanation: I have a client, which sends me a xml file. Server receives the xml file, parses the xml file and stores it in the db. From db i want to send the details in the form of an xml to the client. client: <employee> <name>glen</name> <telephone>123456789</telephone> </employee> <employee> <name>gwen</name> <telephone>123456789</telephone> </employee> server parses this xml file as displayed below: name : glen telephone:123456789 name : gwen telephone: 123456789 and saves it in a database(postgresql9.1) if the client requests for details of the employees, i've to send it in xml form from database.I don't know how to do it can u help me out.

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• Big AdventureWorks2012

  - by jamiet

  Last week I launched AdventureWorks on Azure, an initiative to make SQL Azure accessible to anyone, in my blog post AdventureWorks2012 now available for all on SQL Azure. Since then I think its fair to say that the reaction has been lukewarm with 31 insertions into the [dbo].[SqlFamily] table and only 8 donations via PayPal to support it; on the other hand those 8 donators have been incredibly generous and we nearly have enough in the bank to cover a full year’s worth of availability. It was always my intention to try and make this offering more appealing and to that end I have used an adapted version of Adam Machanic’s make_big_adventure.sql script to massively increase the amount of data in the database and give the community more scope to really push SQL Azure and see what it is capable of. There are now two new tables in the database: [dbo].[bigProduct] with 25200 rows [dbo].[bigTransactionHistory] with 7827579 rows The credentials to login and use AdventureWorks on Azure are as they were before: Server mhknbn2kdz.database.windows.net Database AdventureWorks2012 User sqlfamily Password sqlf@m1ly Remember, if you want to support AdventureWorks on Azure simply click here to launch a pre-populated PayPal Send Money form - all you have to do is login, fill in an amount, and click Send. We need more donations to keep this up and running so if you think this is useful and worth supporting, please please donate.   I mentioned that I had to adapt Adam’s script, the main reasons being: Cross-database queries are not yet supported in SQL Azure so I had to create a local copy of [dbo].[spt_values] rather than reference that in [master] SELECT…INTO is not supported in SQL Azure The 1GB limit of SQLAzure web edition meant that there would not be enough space to store all the data generated by Adam’s script so I had to decrease the total number of rows. The amended script is available on my SkyDrive at https://skydrive.live.com/redir.aspx?cid=550f681dad532637&resid=550F681DAD532637!16756&parid=550F681DAD532637!16755 @Jamiet

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• SQL – Crossword Puzzle Based on Course Building Successful High Traffic Profitable Blog

  - by Pinal Dave

  Do you like Crossword Puzzles? I personally love it. Everytime I open the newspaper, I try to resolve at least one crossword or sudoku. It is just fun to tease a brain little and stretch its limits. Regular readers of the blogs are aware that I have recently published two courses on how to build successful high traffic profitable blog. Here are the links to watch both the courses: Course 1, Course 2. Do watch them in order as both the courses have unique content, which can help you build a better blog. On my birthday July 30th, there was an interesting blog post posted on Pluralsight blog. It was a crossword build from my two courses. I encourage you try to solve the crossword which I have built. Giveaway: There is a cool gift for the winner – it is melting clock. Do not confuse this as a dummy or not working clock. This looks like melting but it always shows accurate time and it is perfectly balanced to hang off of any flat surface. How to Participate: Well, it is very simple, you just have to complete the crossword and send it to me at pinal at sqlauthority.com with all valid answers. The deadline is that you must send it before Monday August 5, 2013 or before the valid answer keys are posted on Pluralsight blog. Hints: Though the crossword is very easy and intuitive, if you ever get stuck anywhere here are two hints: Hint 1, Hint 2. Login to Pluralsight courses and watch both the courses. Watching the course will not only help you to easily complete crossword but there are hidden gems and secrets to build a high traffic profitable blog. Here is the link to download the crossword: Download Crossword. Alternatively you can download the image displayed below and print it as well.   Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: About Me, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Blogging

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• Expression Studio 4 Community Launch Event

  - by Timmy Kokke

  Event On June 7th Expression Studio 4 will be launched at the Internet Week in New York. One day later, on June 8th, the Dutch Silverlight and Expression User Group SIXIN organizes the Dutch Community Launch in collaboration with Microsoft and Centric at Centric's office in IJsselstein. To celebrate the 4 Expression release we have two interesting speakers. In addition, we give three packages Expression Studio and more great gifts away.   Program The preliminary program for the evening is as follows: 5:45 p.m. - Food, drinks and networking 6:45 p.m. - Reception and Introduction by Koen Zwikstra, co-founder of SIXIN and Silverlight MVP 7:00 p.m. - Phone 7 Building a Windows application using the new features of Expression Blend by Loek van den Ouweland, founder and web designer for Magic Studio 8:00 p.m. - Break 8:30 p.m. - Tour Encoder and Expression Web by Antoni Dol, senior designer at Macaw 9:30 p.m. - Networking while enjoying a drink   Ask your question to one of the speakers If you have a question to one of the speakers, then you can by email ([email protected]) or thru Twitter. Send an email with subject # expression4 or send a tweet @ sixinUG and use it to hashtag # expression4.   Register To register for this event or to get more information you can go to the SIXIN meetings page here.   Special thanks to our sponsors:

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• Do you want to know more about Oracle Learning Management 12.1?

  - by anders.northeved

  Many of you have upgraded to OLM 12.1 or are in the process of doing so. We have been asked if it was possible to arrange a couple of webcast describing the new functions and features in OLM 12.1 – and of course it is. We will do two webcasts: One on the new features and functions in OLM 12.1.1 and another one on the new features and functions in OLM 12.1.2 + 12.1.3. Each webcast will last for approx. 45 min and afterwards there will be a Q&A session for as long as you have questions! Everybody interested in participating is very welcome to join. Just send an e-mail with the following information to [email protected]: List of participants from your organization Your organization’s current status: Which OLM version you are on and if you have current upgrade plans then we’ll send you a mail with information on how to join. Webcast on OLM 12.1.1 new features: Monday 28th March 5pm CET (8.30pm IST; 4pm UK; 11am EST; 8am PST) Webcast on OLM 12.1.2+OLM 12.1.3 new features: Tuesday 29th March 5pm CET (8.30pm IST; 4pm UK; 11am EST; 8am PST) We are looking forward to your participation!

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• Dot Matrix printers setup...

  - by Parhs

  Hello! I am using debian which is similar to ubuntu. They have 7 dot matrix printers some very old like this one http://www.omnidatasys.net/product/desc_printer_ti880.htm which works from 1979 daily and at text is faster than many inkjects. I believe that it has his own language... Sending text to serial port (port server) prints garbage. However i think is prints only capital english up to 95 asccii and greek and the rest up to 127 i think greek capital.(special chip ) Sending english capital letters prints garbage i think but i amnt sure... i will try again... The other printer are ESC/P compatible and i use generic epson driver provided from ghostscript... However i think that sending text via lp -dpr1 filename It prints the text as a grafic...Changing from printer font face(courier,times roman etc) or pitch has no effect... I am wondering if is there any work arround for this? In AIX they claim that lp command printed output as text as it prints and cobol programs send raw text to to lp printers . However in AIX they use some custom filters for the printers and has more options for dot matrix printers.. I would like to know if there is a solution for this.. To avoid graphics mode for text and change font face somehow.. The most Straight-through approach would be to use no driver ,just send ESC/P from cobol but this requires too much work... Thank you again!

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• HLSL - Creating Shadows in 2D

  - by richard

  The way that I create shadows is by the following technique: http://www.catalinzima.com/2010/07/my-technique-for-the-shader-based-dynamic-2d-shadows/ But I have questions to HLSL. The way that I currently do it is, I have a black and white image, where Black means 'object', and white means 'nothing'. I then distort the image like in the tutorial. I do this with a pixel shader, but instead of rendering to the screen, I render to a texture, back to my application. I then take this, and create the shadows, and then send it back to the graphics card to undo the distortion, after the shadow has been added - this comes back and I have a stencil of shadow. I can put this ontop of the original image and send them back to the graphics card, which then puts them on the screen. To me this is alot of back and forth. Is there a way i can avoid this? The problem that I am having is that I need to basically go through all positions in the texture 3 times, and use the new new texture every time instead of the orginal one. I tried to read up on Passes, but i don't think that i am heading in the right direction there. Help?

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• What are the possible options for AI path-finding etc when the world is "partitionned"?

  - by Sebastien Diot

  If you anticipate a large persistent game world, and you don't want to end up with some game server crashing due to overload, then you have to design from the ground up a game world that is partitioned in chunks. This is in particular true if you want to run your game servers in the cloud, where each individual VM is relatively week, and memory and CPU are at a premium. I think the biggest challenge here is that the player receives all the parts around the location of the avatar, but mobs/monsters are normally located in the server itself, and can only directly access the data about the part of the world that the server own. So how can we make the AI behave realistically in that context? It can send queries to the other servers that own the neighboring parts, but that sounds rather network intensive and latency prone. It would probably be more performant for each mob AI to be spread over the neighboring parts, and proactively send the relevant info to the part that contains the actual mob atm. That would also reduce the stress in a mob crossing a border between two parts, and therefore "switching server". Have you heard of any AI design that solves those issues? Some kind of distributed AI brain? Maybe some kind of "agent" community working together through message passing?

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• Duplicity can't connect to CloudFiles "Network is unreachable"

  - by jwandborg

  Whenever I click "Backup now" in the Backup GUI, the smaller "Back Up" window opends, and after a while I get the following error message: Traceback (most recent call last): File "/usr/bin/duplicity", line 1359, in with_tempdir(main) File "/usr/bin/duplicity", line 1342, in with_tempdir fn() File "/usr/bin/duplicity", line 1202, in main action = commandline.ProcessCommandLine(sys.argv[1:]) File "/usr/lib/python2.7/dist-packages/duplicity/commandline.py", line 942, in ProcessCommandLine globals.backend = backend.get_backend(args[0]) File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 156, in get_backend return _backends[pu.scheme](pu) File "/usr/lib/python2.7/dist-packages/duplicity/backends/cloudfilesbackend.py", line 70, in __init__ self.container = conn.create_container(container) File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 250, in create_container response = self.make_request('PUT', [container_name]) File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 189, in make_request response = retry_request() File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 182, in retry_request self.connection.request(method, path, data, headers) File "/usr/lib/python2.7/httplib.py", line 955, in request self._send_request(method, url, body, headers) File "/usr/lib/python2.7/httplib.py", line 989, in _send_request self.endheaders(body) File "/usr/lib/python2.7/httplib.py", line 951, in endheaders self._send_output(message_body) File "/usr/lib/python2.7/httplib.py", line 811, in _send_output self.send(msg) File "/usr/lib/python2.7/httplib.py", line 773, in send self.connect() File "/usr/lib/python2.7/httplib.py", line 1154, in connect self.timeout, self.source_address) File "/usr/lib/python2.7/socket.py", line 571, in create_connection raise err error: [Errno 101] Network is unreachable I use Rackspace CloudFiles as a storage backend, last backup was 3 days ago (successful. I have not changed any settings since then.

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• How does eMail encryption work?

  - by Dummy Derp

  I have been going over YouTube watching videos on eMail encryption and everyone seems to explain it from a different perspective. Some do it for a CompTIA exam while others just provide a primer. Here is what I understood: Step1: You compose an email that you want to send. Without encryption, it will be simple ASCII text that will be visible to anyone along the way. Step2: You generate a digital signature to make sure that nobody gets to re-transmit your email and claim it was you. Digital Signature is generated using Sender's private key which is usually a hash of the password and is then combined with the original message to form one long hash string. These signatures are one-time-use-only and a new one is calculated for every email. Step 3: You encrypt the compose of your email using Receiver's public key so that the only person who can read it is the intended receiver using their private key Step 4: When you hit the send the email, what is transmitted now is gibberish to everyone apart from the intended receiver who will decrypt is using their private key And there are various ways to do it like PEM, PGP, etc. Correct me where I am wrong or refine where necessary.

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• Search network device from LAN through my C++ application and change the IP address

  - by Arun Kumar K S

  I am developing an application in C++ to communicate with my network device. I used UDP classes to search the device from the network. I done the code in such a way that from my application a broadcast message will send to the local network. The device will respond to the broadcast message and the application will get the IP address from that response. After establishing a network communication send a message to the device for changing the IP address. That worked fine if my devices IP address is correct. But when I set a wrong IP address and subnet to the device. My application will never get any messages from the device. So I can't able communicate to the device and not able get the device and unable to change the IP address etc. Say example IP address of the device 20.1.1.1 Subnet Mask 255.0.0.0 And in my system that runs the application IP address 192.168.1.23 Subnet Mask 255.255.255.0 I tried the Lantronix device installation software with their Lantronix device in network. It listed the device from the network and I am able to change the IP address from their software. Any one know how this is done in this type of software? How I can search in network to find the device and change the IP address when its IP address is not in range? Which protocol they used to find the device?

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• How to design a scriptable communication emulator?

  - by Hawk

  Requirement: We need a tool that simulates a hardware device that communicates via RS232 or TCP/IP to allow us to test our main application which will communicate with the device. Current flow: User loads script Parse script into commands User runs script Execute commands Script / commands (simplified for discussion): Connect RS232 = RS232ConnectCommand Connect TCP/IP = TcpIpConnectCommand Send data = SendCommand Receive data = ReceiveCommand Disconnect = DisconnectCommand All commands implement the ICommand interface. The command runner simply executes a sequence of ICommand implementations sequentially thus ICommand must have an Execute exposure, pseudo code: void Execute(ICommunicator context) The Execute method takes a context argument which allows the command implementations to execute what they need to do. For instance SendCommand will call context.Send, etc. The problem RS232ConnectCommand and TcpIpConnectCommand needs to instantiate the context to be used by subsequent commands. How do you handle this elegantly? Solution 1: Change ICommand Execute method to: ICommunicator Execute(ICommunicator context) While it will work it seems like a code smell. All commands now need to return the context which for all commands except the connection ones will be the same context that is passed in. Solution 2: Create an ICommunicatorWrapper (ICommunicationBroker?) which follows the decorator pattern and decorates ICommunicator. It introduces a new exposure: void SetCommunicator(ICommunicator communicator) And ICommand is changed to use the wrapper: void Execute(ICommunicationWrapper context) Seems like a cleaner solution. Question Is this a good design? Am I on the right track?

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• django & postgres linux hosting (with SSH access) recommendations

  - by Justin Grant

  We're looking for a good place to host our custom Django app (a fork of OSQA) and its postgresql backend. Requirements include: Linux Python 2.6 or (ideally) Python 2.7 Django 1.2 Postgres 8.4 or later DB backup/restore handled by the hoster, not us OS & dev-platform-stack patching/maintenance handled by the hoster, not us SSH access (so we can pull source code from GitHub, so we can install python eggs, etc.) ability to set up cron jobs (e.g. to send out dail email updates) ability to send up to 10K emails/day good performance (not ganged up with a zillion other sites on one CPU, not starved for RAM) FTP or SCP access to web logs dedicated public IP SSL support Costs under $1000/month for a relatively small site (<5M pageviews/month) Good customer service We already have a prototype site running on EC2 on top of a Bitnami DjangoStack. The problem is that we have to patch the OS, patch postgres, etc. We'd really prefer a platform-as-a-service (PaaS) offering, like Heroku offers for Rails apps, where all we need to worry about is deploying our code instead of worrying about system software patching and maintenance. Google App Engine is closest to what we're looking for, but they don't offer relational DB access (not yet at least). Anyone have a recommendation?

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• What packages can i use to unroll a complete store with customer service?

  - by acidzombie24

  I havent bought the server yet (possible VPS) but i am thinking about using linux with apache and mono for asp.net support. I don't know much about this. What packages can i use together to have a store with customer support? What i like is 1) A store to purchase one item (its digital). More may be possible but they are likely to be addons which need the first item. 2) Have the the store send messages to my app which will generate registration key and deliver the digital item. 3) Create an account for that customer on a support site used for tickets 4) A Forum. I'd like a private forum for customers and may want their account to be disabled when their product license has expired. 5) A mailing list. I like non customers be able to subscribe to a list and i'd like to know if any customers are on it so i can send different emails to each if desired. Are there packages that make any of these easy? I dont mind writing glue code if i need to but i havent tried any stores, mailing list, ticket system but have installed a forum once long ago. My mail server will likely be through google apps.

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• RESTFul: state changing actions

  - by Miro Svrtan

  I'am planning to build RESTfull API but there are some architectural questions that are creating some problems in my head. Adding backend bussiness logic to clients is option that I would like to avoid since updating multiple client platforms is hard to maintain in real time when bussiness logic can rapidly change. Lets say we have article as a resource ( api/article ), how should we implement actions like publish, unpublish,activate or deactivate and so on but to try to keep it as simple as possible? 1) Should we use api/article/{id}/{action} since a lot of backend logic can happen there like pushing to remote locations or change of multiple properties. Probably the hardest thing here is that we need to send all article data back to API for updating and multiuser work could not be implemented. For instance editor could send 5 seconds older data and overwrite fix that some other journalist just did 2 seconds ago and there is no way that I could explain to clients this since those publishing an article is really not in any way connected to updating the content. 2) Creating new resource can also be an option, api/article-{action}/id , but then returned resource would not be article-{action} but article which I'am not sure if this is proper. Also in server side code article class is handling actuall work on both resource and I'm not sure if this goes against RESTfull thinking Any suggestions are welcomed..

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• What&rsquo;s in your wallet, er&hellip;Inbox?

  - by johndoucette

  Since my first UUCP operation in UNIX to deliver and receive an email, I have always been challenged to find the ultimate email organizer. About a year ago, I switched to a very simple process of managing email and have found the ultimate in organization. On the craziest of days with 250+ emails, I keep my inbox empty. Here is how I do it; First, start with the following folders in your mailbox; Inbox    Archive    FollowUp    Hold Of course, all inbound emails will start in the Inbox. As you work throughout the day, follow these steps to keep your inbox empty; Read the email. Are you responsible for any action? If you are and can do it immediately, then do it. If you need to do it later, move the email to the “FollowUp” folder If you are not responsible for any action, move it to the archive folder. Use Outlook’s search to find them when you need them. If you will need to reference the email later in the week or for a short term (week or two), then move the email to the “Hold” folder As your day progresses, frequently review the FollowUp folder and accomplish the task *Notes: If I am waiting for someone to do something for me, I keep it in the FollowUp folder. As I review the folder, I am constantly reminded that there is something I am waiting on – and can send a simple reminder by forwarding the original email. I sometimes send myself a “todo” email and park it in the FollowUp folder I like to know how many emails are in the folders so I set the “Show total number of items” property on the folder to show the amount of emails.

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• Turn-based Client-Server Card Game - Unicast (TCP) or Multicast (UDP)

  - by LDM91

  I am currently planning to make a card game project where the clients will communicate with the server in a turn-based and synchronous manner using messages sent over sockets. The problem I have is how to handle the following scenario: (Client takes it turn and sends its action to server) Client sends a message telling the server its move for the turn (e.g. plays the card 5 from its hand which needs to placed onto the table) Server receives messages and updates game state (server will hold all game state). Server iterates through a list of connected clients and sends a message to tell of them change in state Clients all refresh to display the state This is all based on using TCP, and looking at it now it seems a bit like the Observer pattern. The reason this seems to be an issue to me is this message doesn't seem to be point-to-point like the others as I want to send it to all the clients, and doesn't seem very efficient sending the same message in that way. I was thinking about using multicasting with UDP as then I could send the message to all the clients, however wouldn't this mean that the clients would in theory be able to message each other? There is of course the synchronous aspect as well, though this could be put on top of the UDP I guess. Basically, I would like to know what would be good practice as this project is really all about learning, and even though it won't be big enough to encounter performance issues from this I would like to consider them anyway. However, please note I am not interested in using message oriented middleware as a solution (I have experience with using MOM and I'm interested in considering other options excluding MOM if TCP sockets is a bad idea!).

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• Farmyard

  - by Richard Jones

  Moooooooo     For a while now we’ve been using Apple’s enterprise device app distribution mechanism.   This allows you to have a user, click on a URL on their iOS device and it pulls down a new version of an enterprise app. of of our servers. Its really nice,  have a look at - http://developer.apple.com/library/ios/#featuredarticles/FA_Wireless_Enterprise_App_Distribution/Introduction/Introduction.html   I’ve embedded this, into a check on application launch, that a web-service is called to detect a newer version of the software is available.  It then calls the URL to the App and a new version is deployed. You can alert users that a new App update is available by sending them a push notification.  See screenshot at the top. We send our push notifications out to users,  using a simple C# service.    The fun part is this.   You can instruct the push notification to play a sound (embedded in the app already). So our push notification’s play a random farmyard noise, i.e from a selection of - cow.wav dogbrk.wav duck.wav goose.wav horse.wav lamb.wav monkey.wav – left field I know rooster.wav Imagine my amusement being able to periodically send out an update and watch our office (of about 60 people) turn into farm for a few seconds. I’ve messed up a few times, with people being interrupted on customer conference calls,  but people seem good humoured about it. (so far) Simple(ish) pleasures…

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• BI-Applications Special Price Promotion for Partners

  - by Mike.Hallett(at)Oracle-BI&EPM

  Partners should keep in mind the “Midsize Market” pricing promotion for BI-Applications solution packages, with reduced minimums applicable to Oracle's Business Intelligence Products, and a pre-approved 50% discount. ·       Partners additionally get their normal e-business reseller discount. This now makes it most attractive to offer the pre-built BI-Applications such as Manufacturing Analytics, Financial Analytics, Procurement and Spend Analytics, Project Analytics, and Human Resources Analytics, to both customers newly implementing Oracle ERP, and for the many existing Oracle ERP (eBusiness suite, Peoplesoft and JDE) customers. To answer any questions, and to get the partner document with further details of this offer, or to work with us on our local sales campaigns targeting existing ERP customers, please send your query to [email protected] or [email protected]: or discuss it with your local Oracle Sales or Channel representative for Applications to Midsize Enterprises.  This promotion is ONLY for End Customers whose organisations have an Annual Revenue (or Public Sector Budget) below $500 million, and who are based in Europe, the Middle East or Africa. For more information see the orginal article, “New fy13 BI-Applications Price Promotion for MIDSIZE CUSTOMERS”  and send your query to [email protected].

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• How to 301 redirect from old query string urls to CakePHP Canonical urls?

  - by Daniel Bingham

  I currently have a .htaccess file that looks like this: RewriteCond %{QUERY_STRING} ^action=view&item=([0-9]+)$ RewriteRule ^index\.php$ /index.php?url=item/%1 [R=301] RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?url=$1 [QSA,L] It is meant to 301 redirect my old query string based URLs to new CakePHP urls. This will successfully send users to the correct page. However, Google doesn't seem to like it (see below). I previously tried doing this: RewriteCond %{QUERY_STRING} ^action=view&item=([0-9]+)$ RewriteRule ^index\.php$ /item/%1 [R=301] RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?url=$1 [QSA,L] But that fails. The second rewrite rule doesn't seem to catch the rewritten URL. It goes straight through. Using the first version wouldn't be a problem, except that I suspect that is what is choking up Google. It hasn't indexed my sitemap full of the new URLs. My old sitemap had been fully indexed and all the URLs are in Google's index. But it isn't following the redirects from the old URLs to the new. I have a 'not followed' error for every one of the query urls that was in my old sitemap. Am I properly using a 301 redirect here? Is it the weird rewrite rule? What can I do to send both Google and users to the proper page and save my page rank?

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