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  • New form on a different thread

    - by Dan
    So I have a thread in my application, which purpose is to listen to messages from the server and act according to what it recieves. I ran into a problem when I wanted to fire off a message from the server, that when the client app recieves it, the client app would open up a new form. However this new form just freezes instantly. I think what's happening is that the new form is loaded up on the same thread as the thread listening to the server, which of course is busy listening on the stream, in turn blocking the thread. Normally, for my other functions in the clients listening thread, I'd use invokes to update the UI of the main form, so I guess what I'm asking for is if here's a way to invoke a new form on the main form.

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  • Uploading Files to AWS S3 from an Android App

    - by Abhishek Kaushik
    Edited 7th June,14 My Android app needs to have a feature where clients can upload their files. I want AWS S3 as my storage. Moreover i dont want to use SECRET_KEY and ACCESS_KEY_ID on client side. What is the the best way to do this. Can someone provide the working code too ? I read that i can request to AWS for a signed URL and then make client directly upload to that URL. How to achieve this ?

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  • Twitter OAuth question

    - by Squall
    Hi there, I'm making a Twitter client in Java, and I've came to a problem I don't know how to solve it. How the hell I store open auth for twitter? I mean it doesn't make very sense for a person to allow an application every time he wants to use the client. I've been look at the Twitter documentation, but I must say, it's really poor in terms of Java. So do you guy have some idea to solve this? Thanks in advance!

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  • Which Java Web Framework allows Cross-Domain Javascripting (http proxy) ?

    - by snsd
    So just a quick intro, I am starting to explore Vaadin, and it's absolutely perfect. Previously, I was juggling PHP, Perl, Ruby, and Jquery for designing rich client web application. It didn't work out too well, as I've burnt out from trying to fix cross browser issues (aka get-it-to-work-on-IE-damn-it), handling server-side, client-side, and building a robust communication between the two tier had lot of code not related to application logic....by the time I was burnt out, only tiny bit of application logic was implemented. Vaadin seems like the answer to my problem as it only requires Java and built on top of GWT. However, I am curious how I can incorporate Cross-Domain Javascripting ? Back in LAMP environment, I had a CGI proxy script that loaded external URL, and injected JS into the proxy-loaded page. I used the CGI proxy script, as it rendered Javascript of the external URL well. Is there a class or package for Java or a specific Java web framework similiar to Vaadin that makes this possible ? Thank you.

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  • [grails + xfire] How to handle errors in SOAP services?

    - by Mulone
    Hi all, I'm implementing a web service on the xfire plugin. I was wondering how I'm supposed to handle the errors. I tried with this setup but the error is not returned to the SOAP client: GaSession[] myMethod( String userId ) throws MyException{ GaUser user = GaUser.findByUserId( userId ) if (!user) throw new MyException("user ${userId} does not exist") // do stuff and return valid results } Is there a standard way to handle errors and return them to the client in a clear way? My log is full of messages like: 2010-06-13 18:20:40,926 [Thread-289] DEBUG aegis.XMLClassMetaInfoManager - Mapping file : /com/mycompany/MyClass.aegis.xml not found. Is there a way to fix this? Cheers!

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  • networkstream always empty!

    - by ALEX
    hey I'm writing on an Server-Client program but when my client sends something, it never reaches my server! I'm sending like this: public void Send(string s) { char[] chars = s.ToCharArray(); byte[] bytes = chars.CharToByte(); nstream.Write(bytes, 0, bytes.Length); nstream.Flush(); } and Receiving in a background thread like this void CheckIncoming(object dd) { RecievedDelegate d = (RecievedDelegate)dd; try { while (true) { List<byte> bytelist = new List<byte>(); System.Threading.Thread.Sleep(1000); int ssss; ssss = nstream.ReadByte(); if (ssss > 1) { System.Diagnostics.Debugger.Break(); } if (bytelist.Count != 0) { d.Invoke(bytelist.ToArray()); } } } catch (Exception exp) { MSGBOX("ERROR:\n" + exp.Message); } } the ssss int is never 1 whats happening here???

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  • Socket c# not listen on port over internet?

    - by Nguy?n Van Th?ng
    Code server I have server listen on port 1450: //Using UDP sockets clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); EndPoint ourEP = new IPEndPoint(IPAddress.Any, 1450); //Listen asynchronously on port 1450 for coming messages (Invite, Bye, etc). clientSocket.Bind(ourEP); //Receive data from any IP. EndPoint remoteEP = (EndPoint)(new IPEndPoint(IPAddress.Any, 0)); byteData = new byte[1024]; //Receive data asynchornously. clientSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref remoteEP, new AsyncCallback(OnReceive), null); but code on not open port 1450 and client connect: otherPartyIP = new IPEndPoint(IPAddress.Parse(txtCallToIP.Text), 1450); otherPartyEP = (EndPoint)otherPartyIP; When i run code client and server in lan network it's ok. but run over network i check port 1450 in lan not open. tell me how open port 1450 in code server? thanks

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  • (L)GPL license questions

    - by Marco
    I'm uncertain about a few licensing questions. I develop a closed source application, that's communicating with an open source server. Are my assumptions correct? Can I use an unmodified (L)GPL software on the server-side? I think yes Can I use and modify (L)GPL software on the server-side? I think yes because I'm not distributing the server application The client uses an communication library licensed under LGPL. Can I make changes to this library? Yes, as long as I provide the source of the library with the client software Can I take only certain parts of an LGPL licensed software and make a new project? Yes if it's licensed under LGPL too.

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  • Good way to send a large file over a network in C#?

    - by BFreeman
    I am trying to build an application that can request files from a service running on another machine in the network. These files can be fairly large (500mb + at times). I was looking into sending it via TCP but I'm worried that it may require that the entire file be stored in memory. There will probably only be one client. Copying to a shared directory isn't acceptable either. The only communication required is for the client to say "gimme xyz" and the server to send it (and whatever it takes to ensure this happens correctly). Any suggestions?

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  • How to split the chance to display SWFs evenly among banner collection?

    - by Michael Mao
    Hi all: I am working on The ausdcf.org to try adding several banner ads in swf format to the top. Everything starts to work, but I've got several questions that need your help: The client chose not to go with Google AdManager, but prefer a "minimal approach" to do this task. What I am trying to do is sort of "mimicking" the way Google AdManager does for banners, that is, to split the chance of each particular swf to be shown to the visitor evenly among the banner collection. Definitely I can add some jQuery code to do this from client-side, a random number generator and if-else statement would work - just $.load() it! However, what if I'd like to make sure those disabled Javascript (is there any now btw?) still be able to see different swfs in each visit. Any suggestion on how to approach this? Many thanks in advance.

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  • Host unavailable when user is logged off

    - by aksamit
    I am facing a problem that I discovered while I was implementing a small client/host application. The client side runs Windows 7 64-bit and machine never turns off but user is automatically logged off after 30 minutes of inactivity. When user is automatically logged off the host becomes unreachable, first I thought the problem was isolated to my application, but after som investigation I discoverd that resources and vnc server is also unavailable. The question might be a bit off limit for this forum but I can't find any reasonable explanation somewhere else. Does anyone know how I can keep user being logged off automatically but with the host still reachable on the network?

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  • Database Backup

    - by Jungle_hacker
    Scenario i want to take backup from 7 client database to 1 server database. i dont know structure of the db { either server or client db }. both databases are having old data. now i have to make the tool take the backup for that. and should possible to backup old data also[if any updates done on old data.] please help to find the solution for this. 1. how can i proceed with the problem. 2. database not specified, may be MS access or Sql server 2005 3. In which i can implement this [ I am thinking of doing it in c#] please help me to find the solution

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  • question about soapClent in php

    - by Alejandra
    Hi guys! I have a question, I´m developing a web page and I communicate with a server via SOAP. my code is in php. $client = new SoapClient(null, array("location" => "$serverpath", "uri" => "$namespace", "style" => SOAP_RPC, "use" => SOAP_ENCODED )); try { $returnedValue = $client->getInfo($user); } catch (SoapException $exception) { $returnedIDValue = "Caught Soap Exception: $exception\n"; } the problem is the following, when the SOAP services are down, I do not get any exception, the program only stops. any suggestion? I would like to handle gracefully that case. Thanks in advantage Alejandra

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  • ASP.NET equivalent of this PHP code

    - by moiz217
    Please provide asp.net equivalent of this php code. $ip = $_REQUEST['ip']?$_REQUEST['ip']:$_SERVER["REMOTE_ADDR"]; $client = new SoapClient(null, array( 'location' => "http://www.itistimed.com/soap/whois-city.php", 'uri' => "http://www.itistimed.com/soap/req")); $data = $client->ipToCountryCity($ip); var_dump($data); Will display something like: array(7) { ["status"]= int(1) ["status_text"]= string(7) "Success" ["country"]= string(2) "US" ["city"]= string(13) "Mountain View" ["state"]= string(2) "CA" ["zip"]= string(5) "94043" ["org"]= string(11) "Google Inc."} thanks.

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  • Flash: How to dispatch a click event at the top of a loaded .swf?

    - by Myk
    So I'm trying to build a tool that will allow me and other users to all open the same .swf, and then I as the Admin user am able to interact with mine while they all see my mouse movements and button clicks etc on theirs. I'm using BlazeDS to manage this and I'm getting data sent back and forth etc - no difficulties there. The issue I'm running into is this: In an "Admin" instance, I click a button. I capture that X and Y, then tell Blaze to tell my clients to dispatch a Click event at that X and Y. On my client side, I get that data and dispatch a Click event at that X and Y - but the click is actually caught at the stage level. The click on my client side takes place UNDER all of my buttons and other content - so the whole thing fails. Does this make sense? Is there a way to tell it to start the click event at the top?

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  • How online-game clients are able to exchange data through internet so fast?

    - by Kirzilla
    Hello, Let's imagine really simple game... We have a labirinth and two players trying to find out exit in real time through internet. On every move game client should send player's coordinates to server and accept current coordinates of another client. How is it possible to make this exchange so fast (as all modern games do). Ok, we can use memcache or similar technology to reduce data mining operations on server side. We can also use fastest webserver etc., but we still will have problems with timings. So, the questions are... What protocol game clients are usually using for exchanging information with server? What server technologies are coming to solve this problem? What algorithms are applied for fighting with delays during game etc. PS: Sorry for my English and I hope that my question is clear. Thank you.

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  • MEF C# Service - DLL Updating

    - by connerb
    Currently, I have a C# service that runs off of many .dll's and has modules/plugins that it imports at startup. I would like to create an update system that basically stops the service, deletes any files it is told to delete (old versions), downloads new versions from a server, and starts the service. I believe I have coded this right except for the delete part, because as long as I am not overwriting anything, the file will download. If I try to overwrite something, it won't work, which is why I am trying to delete it before hand. However, when I do File.Delete() to the path that I want to do, it gives me access to the path is denied. Here is my code: new Thread(new ThreadStart(() => { ServiceController controller = new ServiceController("client"); controller.Stop(); controller.WaitForStatus(ServiceControllerStatus.Stopped); try { if (um.FilesUpdated != null) { foreach (FilesUpdated file in um.FilesUpdated) { if (file.OldFile != null) { File.Delete(Path.Combine(Utility.AssemblyDirectory, file.OldFile)); } if (file.NewFile != null) { wc.DownloadFile(cs.UpdateUrl + "/updates/client/" + file.NewFile, Path.Combine(Utility.AssemblyDirectory, file.NewFile)); } } } if (um.ModulesUpdated != null) { foreach (ModulesUpdated module in um.ModulesUpdated) { if (module.OldModule != null) { File.Delete(Path.Combine(cs.ModulePath, module.OldModule)); } if (module.NewModule != null) { wc.DownloadFile(cs.UpdateUrl + "/updates/client/modules/" + module.NewModule, Path.Combine(cs.ModulePath, module.NewModule)); } } } } catch (Exception ex) { Logger.log(ex); } controller.Start(); })).Start(); I believe it is because the files are in use, but I can't seem to unload them. I though stopping the service would work, but apparently not. I have also checked the files and they are not read-only (but the folder is, which is located in Program Files, however I couldn't seem to get it to not be read-only programmatically or manually). The service is also being run as an administrator (NT AUTHORITY\SYSTEM). I've read about unloading the AppDomain but AppDomain.Unload(AppDomain.CurrentDomain); returned an exception as well. Not too sure even if this is a problem with MEF or my program just not having the correct permissions...I would assume that it's mainly because the file is in use.

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  • Sending while receiving in C

    - by Spidfire
    I've made a piece of code in what's on my server, the problem is that it doesn't send while im receiving. so if i send something to client 1 to client 2, client2 only receives if he sends something himself.. how can i solve this ? /* Thread*/ while (! stop_received) { nr_bytes_recv = recv(s, buffer, BUFFSIZE, 0); if(strncmp(buffer, "SEND", 4) == 0) { char *message = "Text asads \n"; rv = send(users[0].s, message, strlen(message), 0); rv = send(users[1].s, message, strlen(message), 0); if (rv < 0) { perror("Error sending"); exit(EXIT_FAILURE); } }else{ char *message = "Unknown command \n"; rv = send(s, message, strlen(message), 0); if (rv < 0) { perror("Error sending"); exit(EXIT_FAILURE); } } }

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  • More HTTP verbs with AS3?

    - by tedw4rd
    I'm developing a social game in Flash with a team of developers. Our server-side guy has developed a really slick RESTful API for the Flash client to talk to. A lot of the client-server interactions involve adding and removing objects from a persistent world, so the API makes extensive use of the PUT and DELETE verbs. The problem is, the URLRequest object in AS3 only supports the GET and POST verbs. We're on a strict schedule, and we'd really rather not have to rewrite the whole API to just use GET and POST. Has anyone come up with a good way to get Flash to send other verbs?

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  • [cli/linux] get plain text from raw emails (not attachments extraction)

    - by etuardu
    Hi, having a raw email as input (i.e. the text between "DATA" and "." sent by a smtp client) I need to extract the mail content (which I know is always text only) as plain text. This means decoding transfer encoding (if any: could be base64 or quoted-printable), merging mutiparts (if any), and stripping headers. I tried various tools that would do that: mewdecode, uudecode, uudeview... I only managed to get this last one to work, but it won't output anything if the mail is not MIME encoded and it stores its output in an unpredictable (nor forceable) filename, so it's hard to use it in a not-interactive shell script. Since this is a pretty common job (every mail client have to do that), it's weird it's so complicated. Do you have some hints? (Actually, forcing uudeview to output in a certain file would be good enough). Thank you!

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  • Encrypting MySQL Traffic In Scripts

    - by threepoints
    Hello, I need to be able to encrypt the MySQL traffic from a web server to a database server. I know how to set MySQL to use SSL based on the server and client settings in my.cnf however, this needs to be done using mysql_connect() in PHP. This may be a 2 part question. 1) Does mysql_connect() use the MySQL client settings that are set in my.cnf? If not... I have read that you can use MYSQL_CLIENT_SSL however, where is the SSL data obtained from? Does using MYSQL_CLIENT_SSL in the mysql_connect function automagically encrypt the traffic? Simply put, what is the best way to do this? Thanks!

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  • what are the various approaches for generating PDFs?

    - by andthereitgoes
    I have an idea for an app that would take some flash content which contains graphics and images like various geometric shapes and polygons and some random images and convert them to PDF. Also, since I envision this app to be used my multiple users I want this process to be quick and scalable. One possible solution I could think of is have a small flash client with the capability of assembling the above mentioned graphics and images. Generate some sort of XML, send it to a server running a Java process which could render the PDF using iText. I was wondering what are the other possible ways to do it or the best practices. Technology isn't an issue; open source or commercial. I am looking for ideas to make the process fast and scalable. Most importantly, I don't want the back end server side PDF render engine to constraint the flash client capabilities. I would appreciate if you could share your tech stack idea. Thanks a lot!

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