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• Why WCAG made 3 level "A", "AA" and "AAA"?

  - by jitendra

  What is the purpose of making 3 priority level by WCAG? is it like? If client not paying extra or if we don't have much time then go for A If client paying then or if we have time to make site compatible go for at least AA If client paying and needed according to govt. rules then go for AAA If we are making site then which level we should we try to achieve, or we should do only on client request? Although i found these definitions on this site but these are confusing for me • Priority 1: For all users to access the Web content and for Web developers to attain Conformance level “A”, these requirements must be satisfied. • Priority 2: These requirements should be satisfied by the Web developers so that no group finds it difficult to access the Web content and so as to attain Conformance level “AA”. • Priority 3: These requirements may be satisfied by the Web developers to facilitate access to Web content for some groups and attain Conformance level “AAA”.

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• Retrieve backlink infos from linked image generated by php

  - by aSeptik

  Hi All mates! This time ask you this question: Assuming we have this img ( generated by php ) linked in clients sites <img src="http://mysite.com/genimg.php?id=2" alt=""/> Is Possible to get back from the client location some infos!? ( es. client url ) PS: don't need something that open the entire client page and search for link! don't need something that work just if the link image is clicked!

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• How to download .exe file with progress bar - VB 2012

  - by user2839828

  I am trying to create an updater for my program which automatically download's the latest version of my program from the web. Now I want this process to be done using a progress bar (so when the download progress is at 50% the progress bar is half-way through). This is my code: Private Sub client_ProgressChanged(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs) Dim bytesIn As Double = Double.Parse(e.BytesReceived.ToString()) Dim totalBytes As Double = Double.Parse(e.TotalBytesToReceive.ToString()) Dim percentage As Double = bytesIn / totalBytes * 100 client.Value = Int32.Parse(Math.Truncate(percentage).ToString()) End Sub Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim url As String = "MY DOWNLOAD LINK" 'Download Dim client As WebClient = New WebClient AddHandler client.DownloadProgressChanged, AddressOf client_ProgressChanged AddHandler client.DownloadFileCompleted, AddressOf client_DownloadCompleted client.DownloadFileAsync(New Uri(url), "C:\Users\User\Desktop\BACKUP\TESTING\New folder\1.exe") End Sub End Class Now I know that the place where the file is saved has been inputed manually by me , but I will change that later. My problem currently is that the file is not being downloaded. However when I change the DownloadFileAsync method to DownloadFile , my program downloads the file. However with the DownloadFile method I will not be able to use the progress bar to track the download progress. Any help is much appreciated :-)

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• Adding Java packages to GWT

  - by Organiccat

  I've tried searching but couldn't come up with a defined way on how to add your own packages to a GWT project. My tree structure looks like this: -com.mycompany -public MyApplication.html MyApplication.gwt.xml -com.mycompany.client MyApp.java -com.mycompany.gui TableLayout.java The answer I've seen out there says to add the packages relative to the root directory of the gwt.xml file, like so: <module> <inherits name="com.google.gwt.user.User" /> <entry-point class="com.mycompany.client.MyApp" /> <source path="client" /> <source path="gui" /> </module> It then complains: Unable to find type 'com.technicon.client.MyApp' Hint: Previous compiler errors may have made this type unavailable Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly Can anyone tell me what I'm doing wrong and how to fix this?

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• Need Descriptive architecture to develop file server in dot net.

  - by Vivek

  Hello All, I have to develop a file server service that transfer file form a specified location to its client.Client when starts, requests file to server for current date. Server transfer those file to client. Now constrains are as 1.Application run in intranet. 2.Need to transfer multiple file at a single transaction. 3.File size may be in GB. 4.System runs in real time environment.So proper transaction and acknowledgment needed. 5.Application develop in .net. 5.More than one client can present. Now please help to decide architecture and .net technology (WCF (Http binding) WCF (net tcp binding) ,Socket Programing ( i want to use WCF )) that i choose to develop file server. and Please refer some sample application.

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• What is a great tool for remote pair development?

  - by Haim Bender

  I'm looking for something like VNC, but with some extra features: The server should send only the part of the screen the client is looking at. It would be great if we could have 2 mice on the client's desktop. Or at least if the client could point to somthing without interrupting the server's mouse. A shared whiteboard would be great. Some extra notes: My friend lives far away, and we are using WinXP.

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• How to upgrade a 1.4.3 TortoiseSVN created repository to 1.6.x?

  - by SiegeX

  A few years ago we deployed TortoiseSVN 1.4.3 to our software development team and we used this client to create a repository on a share point. We are now looking at upgrading to the latest 1.6.x version of TortoiseSVN. I had hoped this would be transparent as the additional features and modifications will all be client-side. For the most part this is true except for a very important feature -- merging. When I try to merge a feature branch back into truck I get a "Merge tracking not supported error." So now the question becomes, how does one upgrade a 1.4.3 TortoiseSVN created repo to be compatible with the latest 1.6.x version of TortoiseSVN? As a follow up question, if we were to successfully upgrade the repo such that the 1.6.x client works flawlessly, will we still be backwards compatible with a 1.4.x client?

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• Hybrid EAV/CR model via WCF (and statically-typed language)?

  - by Pat

  Background I'm working on the architecture for a cloud-based LOB application, using Silverlight for the client, WCF, ASP.NET/C# for server and SQL Server for storage. The data model requires some flexibility per user (ability to add custom properties and define validation rules for them, for example), and a hybrid EAV/CR persistence model on the server side will suit nicely. Problem I need an efficient and maintainable technology and approach to handle the transformation from the persisted EAV model to/from WCF (and similarly allow the client to bind to the resulting data - DataGrid is a key UI element)? Admission: I don't yet know enough about WCF to understand if it supports ExpandoObject directly, but I suspect it will. Options I started off looking at WCF RIA services, but quickly discovered they're heavily dependent upon both static type data and compile-time code generation. Neither of these appeal. The options I'm considering include: Using WCF RIA services and pass the data over the network directly in EAV form (i.e. Dictionary), and handle the binding issue purely on the client side (like this) Using a dynamic language (probably IronPython) to handle both ends of the communication, with plumbing to generate the necessary CLR type data on the client to allow binding, and transform to/from EAV form on the server (spam preventer stopped me from posting a URL here, I'll try it in a comment). Dynamic LINQ (CreateClass() and friends), although I'm way out of my depth there and don't know what the limitations on that approach might be yet. I'm interested in comments on these approaches as well as alternative approaches that might solve the problem. Other Notes The Silverlight client will not be the only consumer of the service, making me slightly uncomfortable with option #1 above. While the data model is flexible, it's not expected to be modified heavily. For argument's sake, we could assume that we might have 25 distinct data models active at a given time, with something like 10-20 unique data fields/rules each. Modifications to the data model will happen infrequently (typically when a new user is initially configured).

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• How to put large text data (~20mb) into sql cs 3.5 database?

  - by Anindya Chatterjee

  I am using following query to insert some large text data : internal static string InsertStorageItem = "insert into Storage(FolderName, MessageId, MessageDate, StorageData) values ('{0}', '{1}', '{2}', @StorageData)"; and the code I am using to execute this query is as follows : string content = "very very large data"; string query = string.Format(InsertStorageItem, "Inbox", "AXOGTRR1445/DSDS587444WEE", "4/19/2010 11:11:03 AM"); var command = new SqlCeCommand(query, _sqlConnection); var paramData = command.Parameters.Add("@StorageData", System.Data.SqlDbType.NText); paramData.Value = content; paramData.SourceColumn = "StorageData"; command.ExecuteNonQuery(); But at the last line I am getting this following error : System.Data.SqlServerCe.SqlCeException was unhandled by user code Message=The data was truncated while converting from one data type to another. [ Name of function(if known) = ] Source=SQL Server Compact ADO.NET Data Provider HResult=-2147467259 NativeError=25920 StackTrace: at System.Data.SqlServerCe.SqlCeCommand.ProcessResults(Int32 hr) at System.Data.SqlServerCe.SqlCeCommand.ExecuteCommandText(IntPtr& pCursor, Boolean& isBaseTableCursor) at System.Data.SqlServerCe.SqlCeCommand.ExecuteCommand(CommandBehavior behavior, String method, ResultSetOptions options) at System.Data.SqlServerCe.SqlCeCommand.ExecuteNonQuery() at Chithi.Client.Exchange.ExchangeClient.SaveItem(Item item, Folder parentFolder) at Chithi.Client.Exchange.ExchangeClient.DownloadNewMails(Folder folder) at Chithi.Client.Exchange.ExchangeClient.SynchronizeParentChildFolder(WellKnownFolder wellknownFolder, Folder parentFolder) at Chithi.Client.Exchange.ExchangeClient.SynchronizeFolders() at Chithi.Client.Exchange.ExchangeClient.WorkerThreadDoWork(Object sender, DoWorkEventArgs e) at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e) at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument) InnerException: Now my question is how am I supposed to insert such large data to sqlce db? Regards, Anindya Chatterjee http://abstractclass.org

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• Help using RDA on a Desktop Applicaton?

  - by Joel

  I have a .NET 3.5 Compact Framework project that uses RDA for moving data between its mobile device's local SqlCe database and a remote MSSql-2008 server(it uses RDA Push and Pull). The server machine a virtual directory with sqlcesa35.dll (v3.5.5386.0) setup for RDA. We usually install these cabs on the mobile devices and the RDA process does not have any problems: sqlce.wce5.armv4i.cab sqlce.repl.wce5.armv4i.cab Now I am trying to run this application as a desktop application. RDA Pull (download) has been working well. But the RDA Push (upload) is giving me some problems. This is the exception that I get on the desktop application when I try to use RDA Push: System.Data.SqlServerCe.SqlCeException The Client Agent and Server Agent component versions are incompatible. The compatible versions are: Client Agent versions 3.0 and 3.5 with Server Agent versions 3.5 and Client Agent version 3.5 with Server Agent version 3.5. Re-install the replication components with the matching versions for client and server agents. [ 35,30,Client Agent version = ,Server Agent version = ] I have tried copying the file C:\Program Files\Microsoft SQL Server Compact Edition\v3.5\Desktop\SqlServerCe.dll (v3.5.5692.0) to bin\debug I have also tried copying another version of SqlServerCe.dll (v3.0.5206.0) to bin\debug. But this just gives me a slightly different exception: System.Data.SqlServerCe.SqlCeException [ 35,30 ] Is there a different setup or any different dlls that I need to use? Thanks, -Joel

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• Service Layer which can switch between Web Service Layer and Data Access Layer

  - by Blake Blackwell

  I am building an application that will function as a client-server application, and also as a disconnected client application. I will be using WPF (browser app for client-server application). When interacting with the server's database, I will need to connect using WCF web services. When connecting with the localized database, I will need to connect using the local db's data access layer. What methods/patterns exist for this sort of architecture?

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• Authenticate username and password

  - by Alice Lee

  I have a MMC client that runs on a .Net system, that invokes web methods on a server running on a linux box. The first task the client needs to do is to perform user login. It prompts the user for username and password. What is the best way for the client to authenticate the user's credentials. The password cannot be sent as plain text. The web server implements a web method called ValidateUser().

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• problem with custom NSProtocol and caching on iPhone

  - by TomSwift

  My iPhone app embeds a UIWebView which loads html via a custom NSProtocol handler I have registered. My problem is that resources referenced in the returned html, which are also loaded via my custom protocol handler, are cached and never reloaded. In particular, my stylesheet is cached: <link rel="stylesheet" type="text/css" href="./styles.css" /> The initial request to load the html in the UIWebView looks like this: NSString* strUrl = [NSMutableString stringWithFormat: @"myprotocol:///entry?id=%d", entryID ]; NSURL* url = [NSURL URLWithString: strUrl]; [_pCurrentWebView loadRequest: [NSURLRequest requestWithURL: url cachePolicy: NSURLRequestReloadIgnoringLocalCacheData timeoutInterval: 60 ]]; (note the cache policy is set to ignore, and I've verified this cache policy carries through to subsequent requests for page resources on the initial load) The protocol handler loads the html from a database and returns it to the client using code like this: // create the response record NSURLResponse *response = [[NSURLResponse alloc] initWithURL: [request URL] MIMEType: mimeType expectedContentLength: -1 textEncodingName: textEncodingName]; // get a reference to the client so we can hand off the data id client = [self client]; // turn off caching for this response data [client URLProtocol: self didReceiveResponse:response cacheStoragePolicy: NSURLCacheStorageNotAllowed]; // set the data in the response to our jfif data [client URLProtocol: self didLoadData:data]; [data release]; (Note the response cache policy is "not allowed"). Any ideas how I can make it NOT cache my styles.css resource? I need to be able to dynamically alter the content of this resource on subsequent loads of html that references this file. I thought clearing the shared url cache would work, but it doesnt: [[NSURLCache sharedURLCache] removeAllCachedResponses]; One thing that does work, but it's terribly inefficient, is to dynamically cache-bust the url for the stylesheet by adding a timestamp parameter: <link rel="stylesheet" type="text/css" href="./styles.css?ts=1234567890" /> To make this work I have to load my html from the db, search and replace the url for the stylesheet with a cache-busting parameter that changes on each request. I'd rather not do this. My presumption is that there is no problem if I were to load my content via the built-in HTTP protocol. In that case, I'm guessing that the UIWebView looks at any Cache-Control flags in the NSURLHTTPResponse object's http headers and abides by them. Since my NSURLResponseObject has no http headers (it's not http...) then perhaps UIWebView just decides to cached the resource (ignoring the NSURLRequest caching directive?). Ideas???

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• Detect NetStream events with AS3 Video Object (not component)

  - by JFOX

  I have created a FLV video player using the AS3 flash.media.Video object (not the FLV playback component) and I am trying to listen for meta events and Cue Points embedded in the FLV video but I am not receiving any when I trace the movie. The cue points are not being created dynamically, they are in the FLV video. Video embed code: // Initialize net stream nc = new NetConnection(); nc.connect (null); // Not using a media server. ns = new NetStream(nc); // Add video to stage vid = new Video(456,675); addChild (vid); // Add callback method for listening on // NetStream meta data client = new Object(); ns.client = client; client.onMetaData = this.nsMetaDataCallback; client.onCuePoint = this.onCuePoint; // Play video vid.attachNetStream ( ns ); ns.play ("flv/00_010.flv"); callback handlers in the same class as the above code: public function onCuePoint(info:Object):void { trace("cuePoint: time = " + info.time + " name = " + info.name + " type = " + info.type); if (ns) ns.pause(); } public function nsMetaDataCallback (mdata:Object):void { trace (mdata.duration); } Is there anything I am missing have wrong to capture events from my net stream?

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• How to setup custom DNS with Azure Websites Preview?

  - by husainnz

  I created a new Azure Website, using Umbraco as the CMS. I got a page up and going, and I already have a .co.nz domain with www.domains4less.com. There's a whole lot of stuff on the internet about pointing URLs to Azure, but that seems to be more of a redirection service than anything (i.e. my URLs still use azurewebsites.net once I land on my site). Has anybody had any luck getting it to go? Here's the error I get when I try adding the DNS entry to Azure (I'm in reserved mode, reemdairy is the name of the website): There was an error processing your request. Please try again in a few moments. Browser: 5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5 User language: undefined Portal Version: 6.0.6002.18488 (rd_auxportal_stable.120609-0259) Subscriptions: 3aabe358-d178-4790-a97b-ffba902b2851 User email address: [email protected] Last 10 Requests message: Failure: Ajax call to: Websites/UpdateConfig. failed with status: error (500) in 2.57 seconds. x-ms-client-request-id was: 38834edf-c9f3-46bb-a1f7-b2839c692bcf-2012-06-12 22:25:14Z dateTime: Wed Jun 13 2012 10:25:17 GMT+1200 (New Zealand Standard Time) durationSeconds: 2.57 url: Websites/UpdateConfig status: 500 textStatus: error clientMsRequestId: 38834edf-c9f3-46bb-a1f7-b2839c692bcf-2012-06-12 22:25:14Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com response: {"message":"Try again. Contact support if the problem persists.","ErrorMessage":"Try again. Contact support if the problem persists.","httpStatusCode":"InternalServerError","operationTrackingId":"","stackTrace":null} message: Complete: Ajax call to: Websites/GetConfig. completed with status: success (200) in 1.021 seconds. x-ms-client-request-id was: a0cdcced-13d0-44e2-866d-e0b061b9461b-2012-06-12 22:24:43Z dateTime: Wed Jun 13 2012 10:24:44 GMT+1200 (New Zealand Standard Time) durationSeconds: 1.021 url: Websites/GetConfig status: 200 textStatus: success clientMsRequestId: a0cdcced-13d0-44e2-866d-e0b061b9461b-2012-06-12 22:24:43Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: https://manage.windowsazure.com/Service/OperationTracking?subscriptionId=3aabe358-d178-4790-a97b-ffba902b2851. completed with status: success (200) in 1.887 seconds. x-ms-client-request-id was: a7689fe9-b9f9-4d6c-8926-734ec9a0b515-2012-06-12 22:24:40Z dateTime: Wed Jun 13 2012 10:24:42 GMT+1200 (New Zealand Standard Time) durationSeconds: 1.887 url: https://manage.windowsazure.com/Service/OperationTracking?subscriptionId=3aabe358-d178-4790-a97b-ffba902b2851 status: 200 textStatus: success clientMsRequestId: a7689fe9-b9f9-4d6c-8926-734ec9a0b515-2012-06-12 22:24:40Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: /Service/GetUserSettings. completed with status: success (200) in 0.941 seconds. x-ms-client-request-id was: 805e554d-1e2e-4214-afd5-be87c0f255d1-2012-06-12 22:24:40Z dateTime: Wed Jun 13 2012 10:24:40 GMT+1200 (New Zealand Standard Time) durationSeconds: 0.941 url: /Service/GetUserSettings status: 200 textStatus: success clientMsRequestId: 805e554d-1e2e-4214-afd5-be87c0f255d1-2012-06-12 22:24:40Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: Extensions/ApplicationsExtension/SqlAzure/ClusterSuffix. completed with status: success (200) in 0.483 seconds. x-ms-client-request-id was: 85157ceb-c538-40ca-8c1e-5cc07c57240f-2012-06-12 22:24:39Z dateTime: Wed Jun 13 2012 10:24:40 GMT+1200 (New Zealand Standard Time) durationSeconds: 0.483 url: Extensions/ApplicationsExtension/SqlAzure/ClusterSuffix status: 200 textStatus: success clientMsRequestId: 85157ceb-c538-40ca-8c1e-5cc07c57240f-2012-06-12 22:24:39Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: Extensions/ApplicationsExtension/SqlAzure/GetClientIp. completed with status: success (200) in 0.309 seconds. x-ms-client-request-id was: 2eb194b6-66ca-49e2-9016-e0f89164314c-2012-06-12 22:24:39Z dateTime: Wed Jun 13 2012 10:24:40 GMT+1200 (New Zealand Standard Time) durationSeconds: 0.309 url: Extensions/ApplicationsExtension/SqlAzure/GetClientIp status: 200 textStatus: success clientMsRequestId: 2eb194b6-66ca-49e2-9016-e0f89164314c-2012-06-12 22:24:39Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: Extensions/ApplicationsExtension/SqlAzure/DefaultServerLocation. completed with status: success (200) in 0.309 seconds. x-ms-client-request-id was: 1bc165ef-2081-48f2-baed-16c6edf8ea67-2012-06-12 22:24:39Z dateTime: Wed Jun 13 2012 10:24:40 GMT+1200 (New Zealand Standard Time) durationSeconds: 0.309 url: Extensions/ApplicationsExtension/SqlAzure/DefaultServerLocation status: 200 textStatus: success clientMsRequestId: 1bc165ef-2081-48f2-baed-16c6edf8ea67-2012-06-12 22:24:39Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com message: Complete: Ajax call to: Extensions/ApplicationsExtension/SqlAzure/ServerLocations. completed with status: success (200) in 0.309 seconds. x-ms-client-request-id was: e1fba7df-6a12-47f8-9434-bf17ca7d93f4-2012-06-12 22:24:39Z dateTime: Wed Jun 13 2012 10:24:40 GMT+1200 (New Zealand Standard Time) durationSeconds: 0.309 url: Extensions/ApplicationsExtension/SqlAzure/ServerLocations status: 200 textStatus: success clientMsRequestId: e1fba7df-6a12-47f8-9434-bf17ca7d93f4-2012-06-12 22:24:39Z sessionId: 09c72263-6ce7-422b-84d7-4c21acded759 referrer: https://manage.windowsazure.com/#Workspaces/WebsiteExtension/Website/reemdairy/configure host: manage.windowsazure.com

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• How to negotiate red5 connection parameters for streaming with JAVA

  - by baba

  Hi, I have been creating a thin browser client (on java) that sends an RTMP stream to a specified red5 instance. I also use RTMP Researcher to monitor the traffic and events that occur between the client and the server. Here is what I note: There is obviously a map with options that is being exchanged between the red5 instance and the client. You can see it here: (direct link : http://img716.imageshack.us/img716/661/newbitmapimagelb.png ) What I am wondering about is is there a programmatic way to obtain this map in the client side and maybe change some of the parameters or just examine them Edit: I am connecting like this connect ( host, port, app, callback ); . I assume I am sending some default parameters along, because the other connect methods have also an optionsMap as an argument. I was wondering what are the possible values that could be put in such an optionsMap and where to obtain a list of them?

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• MVVM pattern: ViewModel updates after Model server roundtrip

  - by Pavel Savara

  I have stateless services and anemic domain objects on server side. Model between server and client is POCO DTO. The client should become MVVM. The model could be graph of about 100 instances of 20 different classes. The client editor contains diverse tab-pages all of them live-connected to model/viewmodel. My problem is how to propagate changes after server round-trip nice way. It's quite easy to propagate changes from ViewModel to DTO. For way back it would be possible to throw away old DTO and replace it whole with new one, but it will cause lot of redrawing for lists/DataTemplates. I could gather the server side changes and transmit them to client side. But the names of fields changed would be domain/DTO specific, not ViewModel specific. And the mapping seems nontrivial to me. If I should do it imperative way after round-trip, it would break SOC/modularity of viewModels. I'm thinking about some kind of mapping rule engine, something like automappper or emit mapper. But it solves just very plain use-cases. I don't see how it would map/propagate/convert adding items to list or removal. How to identify instances in collections so it could merge values to existing instances. As well it should propagate validation/error info. Maybe I should implement INotifyPropertyChanged on DTO and try to replay server side events on it ? And then bind ViewModel to it ? Would binding solve the problems with collection merges nice way ? Is EventAgregator from PRISM useful for that ? Is there any event record-replay component ? Is there better client side pattern for architecture with server side logic ?

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• How to get Time Zone through IP Address in PHP

  - by Devesh M

  Hi, I want to get time zone through IP Address in PHP. Actually i have an application which will run at the client machine. I have IP address of client machine. But not able to get the time zone for each client machine. Please reply me. Thanks Devesh M

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• C# udp can not receive any data

  - by StoneHeart

  here is my code Socket sck = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); sck.Bind(new IPEndPoint(IPAddress.Any, 0)); // Broadcast to find server string msg = "Imlookingforaserver:" + udp_listen_port; byte[] sendBytes4 = Encoding.ASCII.GetBytes(msg); IPEndPoint groupEP = new IPEndPoint(IPAddress.Parse("255.255.255.255"), server_port); sck.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1); sck.SendTo(sendBytes4, groupEP); //Wait response from server Socket sck2 = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); sck2.Bind(new IPEndPoint(IPAddress.Any, udp_listen_port)); byte[] buffer = new byte[128]; EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, udp_listen_port); sck2.ReceiveFrom(buffer, ref remoteEndPoint); //<<< I never pass this line I use above code to try find a server. First i broadcast a message and then i wait response from server. A test i made with the server written in c++ and running in windows vista, client written in C# and run on the same machine with server. Problem is: The server can receive message which client broadcast. But client can not receive anything from server. I try to write a client with c++ and it work like a charm, i think my problem is in C# client.

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• WCF Service and Properties

  - by Karnalta

  Hi all, Here is my question, I have a solution with 4 projects in it for a WCF Service : DLL Library : Service Interface. DLL Library : Service Code. Form Application : Service hosting application. Form Application : Service client application. I'd like to have certain properties of the service accessible for the hosting application but not for the client one. If I declare a property in the client interface they will both have access to it. In fact, my service manage user identity login and keep a list of all user currently logged in. I'd like to be able to show this list in the Hosting application, like a debugging tool. But I don't want the service client to be able to access to this list. How can I do ? Thank in advance.

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• Sending jpegs by tcp socket...sometimes incomplete.

  - by Guy

  Vb.net Hi I've been working on a project for months now (vb 2008 express). There is one final problem which I can't solve. I need to send images to a client from a 'server'(listener). The code below works most of the time but sometimes the image is incomplete. I believe this might be something to do with the tcp packet sizes varying, maybe limited by how busy it is out there on the net. I have seen examples of code that splits the image into chunks and sends them out, but I can't get them to work maybe because I'm using a different vb version. The pictures to be sent are small 20k max. Any working code examples would be wonderful. I have been experimenting and failing with this final hurdle for weeks. Thanks in anticipation. Client----- Sub GetPic() '------- Connect to Server ClientSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, _ ProtocolType.Tcp) ClientSocket.Connect(Epoint) '------- Send Picture Request Dim Bytes() As Byte = System.Text.ASCIIEncoding.ASCII.GetBytes("Send Picture") ClientSocket.Send(Bytes, Bytes.Length, SocketFlags.None) '------- Receive Response Dim RecvBuffer(20000) As Byte Dim Numbytes As Integer Numbytes = ClientSocket.Receive(RecvBuffer) Dim Darray(Numbytes) As Byte Buffer.BlockCopy(RecvBuffer, 0, Darray, 0, Numbytes) '------- Close Connection ClientSocket.Shutdown(SocketShutdown.Both) ClientSocket.Close() '------- Dim MStrm = New MemoryStream(Darray) Picture = Image.FromStream(MStrm) End Sub Listener----- 'Threaded from a listener Sub ClientThread(ByVal Client As TcpClient) Dim MStrm As New MemoryStream Dim Rbuffer(1024) As Byte Dim Tbyte As Byte() Dim NStrm As NetworkStream = Client.GetStream() Dim I As Integer = NStrm.Read(Rbuffer, 0, Rbuffer.Length) Dim Incoming As String = System.Text.Encoding.ASCII.GetString(Rbuffer, 0, I) If Incoming = "Send Picture" then Picture Save(MStrm, Picture.RawFormat) Tbyte = MStrm.ToArray NStrm.Write(Tbyte, 0, Tbyte.Length) End if Client.Close() End Sub

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• java.lang.RuntimeException: Spurious serialisation error

  - by sandeep

  I had problem with my client program when I run my client in eclipse or netbeans, I get a runtime error java.lang.RuntimeException: Spurious serialisation error. But when i use command prompt I have no errors. Here is my client code http://pastebin.com/jUkw7F7k

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• Auto-resolving a hostname in WCF Metadata Publishing

  - by Mike C

  I am running a self-hosted WCF service. In the service configuration, I am using localhost in my BaseAddresses that I hook my endpoints to. When trying to connect to an endpoint using the WCF test client, I have no problem connecting to the endpoint and getting the metadata using the machine's name. The problem that I run into is that the client that is generated from metadata uses localhost in the endpoint URLs it wants to connect to. I'm assuming that this is because localhost is the endpoint URL published by metadata. As a result, any calls to the methods on the service will fail since localhost on the calling machine isn't running the service. What I would like to figure out is if it is possible for the service metadata to publish the proper URL to a client depending on the client who is calling it. For example, if I was requesting the service metadata from a machine on the same network as the server the endpoint should be net.tcp://MYSERVER:1234/MyEndpoint. If I was requesting it from a machine outside the network, the URL should be net.tcp://MYSERVER.mydomain.com:1234/MyEndpoint. And obviously if the client was on the same machine, THEN the URL could be net.tcp://localhost:1234/MyEndpoint. Is this just a flaw in the default IMetadataExchange contract? Is there some reason the metadata needs to publish the information in a non-contextual way? Is there another way I should be configuring my BaseAddresses in order to get the functionality I want? Thanks, Mike

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• Strategy for WCF server with .Net clients and Android clients?

  - by D.H.

  I am using WCF to write a server that should be able to communicate with .Net clients, Android clients and possibly other types of clients. The main type of client is a desktop application that will be written in .Net. This client will usually be on the same intranet as the server. It will make an initial call to the server to get the current state of the system and will then receive updates from the server whenever a value changes. These updates are frequent, perhaps once a second. The Android clients will connect over the Internet. This client is also interested in updates, but it is not as critical as for the desktop client so a (less frequent) polling scenario might be acceptable. All clients will have to login to use the services, and when connecting over the Internet the connection should be secure. I am familiar with WCF but I am not sure what bindings are most appropriate for the scenario and what security solution to use. Also, I have not used Android, but I would like to make it as simple as possible for the person implementing the Android client to consume my services. So, what is my strategy?

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• Performance of a proposed JEE architecture

  - by kineas

  I have concerns about the performance of the following architecture: j2ee application in an appserver, ejb session bean and DAOs remote (rich) client, a swing app. A classic, form-based client only one stateless ejb, the ejb is accessed via web services, not rmi, through a homegrown framework each web service request will get authenticated against an LDAP no state stored on the server, only client-side sessions I guess working on the rich GUI will involve a remote call in every 2-10 seconds, or more, per user. What do you think?

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