Search Results

Search found 1694 results on 68 pages for 'communicate'.

Page 40/68 | < Previous Page | 36 37 38 39 40 41 42 43 44 45 46 47  | Next Page >

• iOS and Infrared

  - by Mustafa

  Is it possible to communicate with an Infrared device (USB Infrared, TV, Mobile Phone, etc) using iOS (iPhone or iPad)? Well, i know it's possible, since there are many remote/universal remote applications in the AppStore. I basically want to know how? What are the limitations and requirements? What kind of additional hardware is required? If it's available in the market? Which protocols should i know about? Which iOS libraries can help me in the process. Can anyone point me in the right direction. Thanks.

  Read the article

• What's a good way to detect wrap-around in a fixed-width message counter?

  - by Kristo

  I'm writing a client application to communicate with a server program via UDP. The client periodically makes requests for data and needs to use the most recent server response. The request message has a 16-bit unsigned counter field that is echoed by the server so I can pair requests with server responses. Since it's UDP, I have to handle the case where server responses arrive out of order (or don't arrive at all). Naively, that means holding on to the highest message counter seen so far and dropping any incoming message with a lower number. But that will fail as soon as we pass 65535 messages and the counter wraps back to zero. Is there a good way to detect (with reasonable probability) that, for example, message 5 actually comes after message 65,000? The implementation language is C++.

  Read the article

• Achieving AES-256 Channel Encryption with the .NET Compact Framework

  - by Ev

  Hi There, I am working on a business application where the clients are Windows Mobile 6.1 Professional devices. The server is a Java enterprise application. The industry working group recommends AES-256 encryption for client/server communications. This is necessary to gain certification. The encryption doesn't necessarily need to be channel encryption, it could be payload encryption. Channel encryption is preferable. The client and server communicate using SOAP/HTTP, which we are yet to implement. We plan to use WCF on the compact framework. In order to alleviate some of the work required to implement manual encryption/decryption, it would be nice if we could achieve the required encryption either at the TLS level, or somehow using the WS-* standards (I'm not particularly familiar with that group of technologies but I am learning right now). The server supports https with 256-bit AES. Does anybody have an idea on the best way to implement this? Thanks in advance.

  Read the article

• Connecting Delphi to P/Invoke and .net

  - by lexdean

  The Delphi complier often uses a *.Dll when a special delivery of code info is required to the complier/editor:- example bourland.dll is the memory manager for the Delphi complier, as I remember. And their are many other *.dll's that Embarcoo keep secret that do other things. Is their anything you know that is public information on this subject .net's un managed code could be declared in a *.pas file as a decelerations but the only way to communicate it out is calling *.dll's like P/Invoke I have ilasm.exe and ildasm.exe and a decomplier into Delphi asm code now but still getting around to learn how to use them all yet. I do not have any reference material/editorials on P/invoke at all as I cannot find anything With that I will have a good concrete plan to make a good result I do not know what *.DLL's are in P/Invoke. Do you have any documentation. I do not have any reference material/editorials on ADO.net. The Dlls that are called and any referqance matrial I could use. Best regards, J Lex Dean.

  Read the article

• Task vs. process, is there really any difference?

  - by DASKAjA

  Hi there, I'm studying for my final exams in my CS major on the subject distributed systems and operating systems. I'm in the need for a good definition for the terms task, process and threads. So far I'm confident that a process is the representation of running (or suspended, but initiated) program with its own memory, program counter, registers, stack, etc (process control block). Processes can run threads which share memory, so that communication via shared memory is possible in contrast to processes which have to communicate via IPC. But what's the difference between tasks and process. I often read that they're interchangable and that the term task isn't used anymore. Is that really true?

  Read the article

• Problem with "write" function in linux

  - by Dumitru Catalin

  I am trying to write 2 server/client programs under Linux, in which they communicate through named pipes. The problem is that sometimes when I try to write from the server into a pipe that doesn't exist anymore (the client has stopped), I get a "Resource temporarily unavailable" error and the server stops completely. I understand that this is caused by using a O_NONBLOCK parameter when opening the fifo chanel, indicating the point where the program would usually wait until it could write again in the file, but is there a way to stop this behavior, and not halt the entire program if a problem occurs (shouldn't the write command return -1 ad the program continue normally)? And another strange thing is that this error only occurs when running the programs outside the ide (eclipse). If I run both programs inside eclipse, on error the write function just returns -1 and the programs continues normally.

  Read the article

• PHP to serial with weird baud rates

  - by aloishis89

  I am trying to use PHP to send text to an LED sign so I can send support ticket numbers to it. The sign itself is a piece of work; it came from eBay and is poorly made with almost no documentation. After fiddling with it for a while, I was able to figure out the way it expected stuff to be sent to it and that the baud rate is 28800. I already know how to communicate with stuff like this using PHP, but I don't know how to change the baud rate to something nonstandard. I've tried other baud rates, and haven't been able to get it to work.

  Read the article

• WCF: Callback is not asynchronous

  - by Aquarius

  Hi, I'm trying to program a client server based on the callback infrastructure provided by WCF but it isn't working asynchronously. My client connects to the server calling a login method, where I save the clients callback channel by doing MyCallback callback = OperationContext.Current.GetCallbackChannel() After that the server does some processing and uses the callback object to communicate with the client. All this works, the problem resides on the fact that even though I've set the method in the OperationContract as IsOneWay=true, the server still hangs when doing the call to the client. I've tested this by launching the server for debug in the visual studio, detaching it, launching the client, calling the above mentioned login method, putting a break point in the implemented callback method of the client, and making the server send a response to the client. The server stops doing what it's supposed to do, waiting for the response of the client. Any help is appreciated.

  Read the article

• Best approach to send data from a server to an Android device

  - by ElectricDialect

  I am developing an Android app that needs to communicate bi-directionally with a server. By that, I mean either the server or the device can send a message at any time, with an arbitrary amount of time in between messages. Sending data from the device to the server is a common and I think well understood task, but I'm not as sure what the best approach is to go in the opposite direction from the server to the device. I think having the device periodically poll the server may be a bad idea due to latency and the drain on the battery, but I'd be willing to consider this option. My plan at the moment is to send text messages from the server via an email-to-SMS bridge, and to have my app run a service to receive and handle these messages. The question I have is if there are any best practices for this scenario, and if using text messages has some downsides that I have failed to consider. For the sake of this question, I want to assume that users have an unlimited text data plan, so paying per text won't be an issue.

  Read the article

• How do I design a web service (microsoft) that can be consumed by multiple end points?

  - by Ben McCormack

  My company is planning to implement a solution in multiple applications that will help to validate mailing addresses at the point of data entry. We're using UPS's Extended Address Validation (XAV) web service API to validate the addresses. Our current plan is to build a .NET web service that can be used to communicate between our applications and the UPS API. We have applications in VB6, classic ASP, and .NET 2.0, so we'd like to implement a solution that can be easily consumed by each of these programming environments. What are our (Microsoft) options for designing a web service that can be consumed by multiple clients? In particular, is there a way to design a single web service that can respond with JSON (in case we want to validate our web page using javascript) in addition to XML? I'm new to designing web services and want to make sure we consider all of our options. I've heard terms like asmx, WCF, OData, etc., but I don't know which frameworks will support what we're trying to do and where to start.

  Read the article

• Non Technical -Got selected in Well Reputed Organisation but not getting offer letter. What to do..?

  - by Devashri

  Hi, I got selected in a well reputed company on 27th of March for .Net technology and got selection letter. I was told that I will have to join in next 15 days as my notice peroid was 15 days. And I will get my offer letter as I will submit all documents. So I submitted all the documents and I resigned from my curent organisation. But now no communication is being done. I tried to communicate with them but got no respone. Now I resigned from my previous organisation and not getting offer from new one. So what should I do now? I am just waitng for offer letter and looking for another opportunity? Can anyone suggest me the way to get my offer letter..?? I know this question is nontechnical but still I am asking because I would get suggestions or what to do as by IT Professionals who might had gone through the same condition.

  Read the article

• Problems with IRQs when connecting two digium card in and asterisk box

  - by JorgeO

  I have two Digium Wildcard TDM800P with 8 FXO ports each. When I connect both at the same time IRQ misses start showing up making my computer unresponsive and unusable. One card works fine but I need all 16 FXO ports to work to receive calls from my Telco. Is there a way for the cards to communicate with each other so they don't generate as many interrupts. Or a way to tweak Linux to dedicate separate IRQ's for each card. I have tried disabling Audio, ACPI and USB ports. Still too many IRQ misses.

  Read the article

• Android - Good alternatives to XMPP or REST for communication between servers and clients?

  - by Ann

  Hello I am doing a project. For my project i need to create an Android application. I will use Java and Eclipse. The main idea of app. The application works on environment/location. Example the application needs to pick up on the users location. He should then also be able to communicate with his friends or colleagues which are in the same location. My question: I am looking for a good alternatives to XMPP or REST for communication between servers and clients? Any advice. Kind regards

  Read the article

• Python IPC, popen too slow

  - by UnableToLoad

  i need to run a subprocess (./myProgram) form python script and get output, actually i do this: import subprocess proc = subprocess.Popen('./generate_out', shell=False, stdout=subprocess.PIPE, ) while proc.poll() is None: out = proc.stdout.readline() data = doStuff(out) print(data) but is slow, sometimes pass a lot of time between the output produced by ./generate_out and the print(data), knowing that my doStuff() function is very fast, i think there is some buffer slowing down my pipe... Notes: ./generate_out, generates potentially an unlimited number of lines of finite length each. It seems that when too few chars are put in the pipe between the two processes nothing happens, then when enough is produced i get a huge print (non the expected behaviour!) sometimes i wait many seconds (10-20 and more) between generate_out print and python print) what can i do? maybe communicate() is faster? anithing else? Thank you a lot!

  Read the article

• CQRS, Commands, Javascript

  - by Tolu

  I have an architecture where a task-based UI passes commands to a service layer. Now, my intention is to implement the UI in javascript, using KendoUI and the service layer, domain layer etc. in .NET. I'm also looking at future mobile implementations of the client that may use say Java rather than Javascript. If I define the commands in .NET, I'd like to know how to use them from my Javascript client so the client can communicate the commands appropriately to service layer. Do I have to use something like Apache Thrift for this i.e. to define the commands at both the client and service layer?

  Read the article

• Communication via internet in Java

  - by Stuart

  What I mean is like servers on video games. You can run an application and it will set up a server on your computer with an IP and a port. For example, how would you make an application where one host application sets up a thing where it has an IP and a port, and another computer that has access to the internet as well can type in the IP and port and it would be able to communicate with the host? I mean simple communication, like sending a boolean or String. And would there be any security problems that would be needed to fix?

  Read the article

• API For Flex Apps To Interact

  - by dimo414

  I have a large flex application (the app) running on one server, and many small flex applications (widgets) running on another server, which are to be included in the app so that visually the user see's one continuous application. Due to proprietary third party software, this structure cannot be changed. I am looking for some way to allow the app and the widgets to communicate, allowing the app to make changes to the widgets and the the widgets to notify the app when events are triggered, so that user interaction is fluid and continuous. There are a few related questions which indicate it's possible to do this by setting up event triggers and listeners. I am wondering if there is any standardized way to do this (the answers aren't very clear) or if anyone has developed a library or API to make this easier.

  Read the article

• DLL response is too slow in Visual Studio [Resolved]

  - by magsto

  I use a 3rd party DLL in my VB.NET project (VS2005) that responds to slow and give wrong values in debug mode. In run-time mode everything works as expected. I do understand that there are something going on in the debug mode which makes the DLL communication slow. This behavior makes it hard to debug the application correctly. Is there any way to force VS to communicate with the DLL in "run-time" mode during debugging but let the rest of the project be in control of the debugger? I found a setting that resolved my issue: Project Properties Debug Enable Debuggers select "Enable unmanaged code debugging". Now the DLL communication flowed smoothly. The DLL I use is a middleware between my app and a USB device. There is no Debug/Release version of the DLL.

  Read the article

• Communicating between classes set up in nib, in code?

  - by cannyboy

  A beginner's question: If, in your nib, you have the File's Owner linked to the ViewController class, and you also have a NSObject-derived class, how do you communicate between the ViewController class and the NSObject class within code? For instance, suppose ScientificCalculatorView.xib looks like this File's Owner (class: ScientificCalculatorViewController) FirstResponder View Calculator (an object that has been linked to the Calculator class) Obviously, I'd want Calculator to be reusable, so it could be used with a NormalCalculatorViewController or something like that. So that UI and the calculator code are separate. Does Calculator even need to be in the nib? It's a beginners question, but I'm just trying to get my head around it.

  Read the article

• How to create Ribbon tabs dynamically?

  - by Lari13

  I want to start developmet of new application using PrismV4, MEF, Ribbon. But now, I have a problem. How to create tabs for Ribbon dynamically? Each module in application could create own tab in Ribbon. And each tab may have many groups. How can it be done? Where do I need to place each group's definitions (what controls to use (buttons, textboxes, comboboxes, etc) and command bindings and how? Do I need to write XAML somewhere in Module, or all it can be done by code? And last question, how to notify Ribbon (in Shell) to add these tabs to Ribbon? Shall I use EventAggregator to communicate from Module to Shell? Or? Thanks for any advices and Happy New Year :)

  Read the article

• F# script to application

  - by sudaly

  I have written two small scripts, First one maintains a dictionary of current stock prices for a set of securities. I am using recursion to listen to a named pipe. Whenever there is something available on the name pipe, it updates the security price and goes right back and start listening to the pipe. The second one periodically reads the stock price of some security from the price cache of the first program and performs come calculation. But I have no idea how to make these two programs communicate. I somehow need to make my second programs start the first program and let it run in the background and get the price whenever it needs it. Can someone point me in the right direction? Thank you, -Niran

  Read the article

• ASP.NET MVC - How do I implement validation when using Data Repositories? (Visual Basic)

  - by rockinthesixstring

  I've built a UserRepository interface to communicate with my LINQ to SQL Data layer, but I'm trying to figure out how to implement validation. Here is what my AddUser subroutine looks like Public Sub AddUser(ByVal about As String, ByVal birthdate As DateTime, ByVal openid As String, ByVal regionid As Integer, ByVal website As String) Implements IUserRepository.AddUser Dim user = New User user.About = about user.BirthDate = birthdate user.LastSeen = DateTime.Now user.MemberSince = DateTime.Now user.OpenID = openid user.RegionID = regionid user.UserName = String.Empty user.WebSite = website dc.Users.InsertOnSubmit(user) dc.SubmitChanges() End Sub And then my controller will simply call AddUser(...) But I haven't the foggiest idea on how to implement both client side and server side validation on this. (I think I would prefer to use jQuery AJAX and do all of the validation on the server, but I'm totally open to opinions)

  Read the article

• How to reduce the number of cert validation requests... (IE is killing me slowly)

  - by scooterhanson

  On a customer's internal network, I can make a request to my SSL site using IE6 SP1 (on Win2K) and see one cert validation requests, but if I use IE6 SP2 (on XP) 13 separate cert validation requests get fired off. Needless to say, this slows down my page load a lot. Firefox loads the page just fine with no unnecessary cert validation requests. The server is Apache running a pretty new lampp stack. All the server certificate / CA chain configurations seem to be fine (users can authenticate w/ trusted certs, the system can communicate to other systems with that server cert, etc.) Is there anything I can do from a configuration standpoint? Any other ideas at all?

  Read the article

• using jquery to load data from mysql database

  - by Ieyasu Sawada

  I'm currently using jquery's ajax feature or whatever they call it. To load data from mysql database. Its working fine, but one of the built in features of this one is to load all the data which is on the database when you press on backspace and there's no character left on the text box. Here's my query: SELECT * FROM prod_table WHERE QTYHAND>0 AND PRODUCT LIKE '$prod%' OR P_DESC LIKE '$desc%' OR CATEGORY LIKE '$cat%' As you can see I only want to load the products which has greater than 0 quantity on hand. I'm using this code to communicate to the php file which has the query on it: $('#inp').keyup(function(){ var inpval=$('#inp').val(); $.ajax({ type: 'POST', data: ({p : inpval}), url: 'querys.php', success: function(data) { $('.result').html(data); } }); }); Is it possible to also filter the data that it outputs so that when I press on backspace and there's no character left. The only products that's going to display are those with greater than 0 quantity?

  Read the article

• Java SOAP WSDL 1.1 message sending all the parameters (even future ones)

  - by Eduardo

  I have to communicate with a SOAP Web Service defined in a WSDL 1.1. All the parameters are optional in the WSDL like: <xsd:element name="Submitter" type="xsd:string"/> but if I do not send them I get an error because the parameter was not sent, so instead I have to send an empty string for any parameter I do not intent to send. So instead of not sending the element I have to send: <Submitter></Submitter> The problem is that the WebService publisher does not have any problem adding new parameters at any point in time but I must sent at least an empty string for all the parameters. How may I call this WebService in Java so every time I call the WebService the WSDL is read so that all the parameters are sent having the parameters I care for are actually filled with the data I provide? I am currently using Apache CXF but I am open to anything to solve this problem.

  Read the article

< Previous Page | 36 37 38 39 40 41 42 43 44 45 46 47  | Next Page >