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  • Tests unitaires d'un DomainService WCF RIA : IDomainServiceFactory, un tutoriel de Kyle McClellan, traduit par Deepin Prayag

    Citation: Étant donné que WCF RIA Services emploie un « pipeline pattern » pour invoquer vos opérations DomainService, il n'est pas toujours évident de savoir comment les tester. Dans cette série d'articles nous allons voir un petit DomainService et comment le tester. Entre autres nous allons voir comment implémenter une IDomainServiceFactory personnalisée, comment implémenter le pattern Repository, et comment utiliser la DomainServiceTestHos...

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  • BenkoTips Live and On Demand: Visual Studio 2010, Silverlight 4, and WCF (Level 200)

    In this webcast, we explore what's new and possible with Windows Communication Foundation (WCF) RIA Services and your Microsoft Silverlight application. We show how you can create an entity model and then expose it to your client application and how to build a compelling interface using the data-binding features built into Microsoft Visual Studio 2010....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Tests unitaires d'un DomainService WCF RIA : DomainServiceTestHost, un tutoriel de Kyle McClellan, traduit par Deepin Prayag

    Citation: Étant donné que WCF RIA Services emploie un « pipeline pattern » pour invoquer vos opérations DomainService, il n'est pas toujours évident de savoir comment les tester. Dans cette série d'articles nous allons voir un petit DomainService et comment le tester. Entre autres nous allons voir comment implémenter une IDomainServiceFactory personnalisée, comment implémenter le pattern Repository, et comment utiliser la DomainServiceTestHos...

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  • Silverlight 4 Tools + WCF RIA Services Released

    Microsoft has released the final versions of the Silverlight 4 Tools along with WCF RIA Services and the Silverlight Toolkit. Check Tim Heuers blog for all the info. var addthis_pub="guybarrette"; ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • WCF HttpClient Error calling a RESTful WCF Service - Cannot write more bytes to the buffer than the configured maximum buffer size: 65536

    - by Justin Hoffman
    Using the HttpClient API from wcf.codeplex.com, you may encounter this error if respones are too large.   Cannot write more bytes to the buffer than the configured maximum buffer size: 65536 In order to increase the size of the Response Buffer, just increase the MaxReseponseContentBufferSize as shown below. Increase it to something larger than the default: 65536 depending on your response sizes. var client = new HttpClient { MaxResponseContentBufferSize = 196608, BaseAddress = new Uri("http://myservice/service1/") };

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  • WIF, ADFS 2 and WCF&ndash;Part 1: Overview

    - by Your DisplayName here!
    A lot has been written already about passive federation and integration of WIF and ADFS 2 into web apps. The whole active/WS-Trust feature area is much less documented or covered in articles and blogs. Over the next few posts I will try to compile all relevant information about the above topics – but let’s start with an overview. ADFS 2 has a number of endpoints under the /services/trust base address that implement the WS-Trust protocol. They are grouped by the WS-Trust version they support (/13 and /2005), the client credential type (/windows*, /username*, /certificate*) and the security mode (*transport, *mixed and message). You can see the endpoints in the MMC console under the Service/Endpoints page. So in other words, you use one of these endpoints (which exactly depends on your configuration / system setup) to request tokens from ADFS 2. The bindings behind the endpoints are more or less standard WCF bindings, but with SecureConversation (establishSecurityContext) disabled. That means that whenever you need to programmatically talk to these endpoints – you can (easily) create client bindings that are compatible. Another option is to use the special bindings that come with WIF (in the Microsoft.IdentityModel.Protocols.WSTrust.Bindings namespace). They are already pre-configured to be compatible with the ADFS endpoints. The downside of these bindings is, that you can’t use them in configuration. That’s definitely a feature request of mine for the next version of WIF. The next important piece of information is the so called Federation Service Identifier. This is the value that you (at least by default) have to use as a realm/appliesTo whenever you are requesting a token for ADFS (e.g. in  IdP –> RSTS scenario). Or (even more) technically speaking, ADFS 2 checks for this value in the audience URI restriction in SAML tokens. You can get to this value by clicking the “Edit Federation Service Properties” in the MMC when the Service tree-node is selected. OK – I will come back to this basic information in the following posts. Basically I want to go through the following scenarios: ADFS in the IdP role ADFS in the R-STS role (with a chained claims provider) Using the WCF bindings for automatic token issuance Using WSTrustChannelFactory for manual token handling Stay tuned…

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  • Silverlight and WCF caching

    - by subodhnpushpak
    There are scenarios where Silverlight client calls WCF (or REST) service for data. Now, if the data is cached on the WCF layer, the calls can take considerable resources at the server if NOT cached. Keeping that in mind along with the fact that cache is an cross-cutting aspect, and therefore it should be as easy as possible to put Cache wherever required. The good thing about the solution is that it caches based on the inputs. The input can be basic type of any complex type. If input changes the data is fetched and then cached for further used. If same input is provided again, data id fetched from the cache. The cache logic itself is implemented as PostSharp aspect, and it is as easy as putting an attribute over service call to switch on cache. Notice how clean the code is:        [OperationContract]       [CacheOnArgs(typeof(int))] // based on actual value of cache        public string DoWork(int value)        {            return string.Format("You entered: {0} @ cached time {1}", value, System.DateTime.Now);        } The cache is implemented as POST Sharp as below 1: public override void OnInvocation(MethodInvocationEventArgs eventArgs) 2: { 3: try 4: { 5: object value = new object(); 6: object[] args = eventArgs.GetArgumentArray(); 7: if (args != null || args.Count() > 0) 8: { 9:   10: string key = string.Format("{0}_{1}", eventArgs.Method.Name, XMLUtility<object>.GetDataContractXml(args[0], null));// Compute the cache key (details omitted). 11:   12: 13: value = GetFromCache(key); 14: if (value == null) 15: { 16: eventArgs.Proceed(); 17: value = XMLUtility<object>.GetDataContractXml(eventArgs.ReturnValue, null); 18: value = eventArgs.ReturnValue; 19: AddToCache(key, value); 20: return; 21: } 22:   23:   24: Log(string.Format("Data returned from Cache {0}",value)); 25: eventArgs.ReturnValue = value; 26: } 27: } 28: catch (Exception ex) 29: { 30: //ApplicationLogger.LogException(ex.Message, Source.UtilityService); 31: } 32: } 33:   34: private object GetFromCache(string inputKey) { if (ServerConfig.CachingEnabled) { return WCFCache.Current[inputKey]; } return null; }private void AddToCache(string inputKey,object outputValue) 35: { 36: if (ServerConfig.CachingEnabled) 37: { 38: if (WCFCache.Current.CachedItemsNumber < ServerConfig.NumberOfCachedItems) 39: { 40: if (ServerConfig.SlidingExpirationTime <= 0 || ServerConfig.SlidingExpirationTime == int.MaxValue) 41: { 42: WCFCache.Current[inputKey] = outputValue; 43: } 44: else 45: { 46: WCFCache.Current.Insert(inputKey, outputValue, new TimeSpan(0, 0, ServerConfig.SlidingExpirationTime), true); 47:   48: // _bw.DoWork += bw_DoWork; 49: //string arg = string.Format("{0}|{1}", inputKey,outputValue); 50: //_bw.RunWorkerAsync(inputKey ); 51: } 52: } 53: } 54: }     The cache class can be extended to support Velocity / memcahe / Nache. the attribute can be used over REST services as well. Hope the above helps. Here is the code base for the same.   Please do provide your inputs / comments.

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  • ResolveUrl() from WCF service

    - by Michael Freidgeim
    I wanted to ResolveUrl() from WCF service and foundhttp://www.west-wind.com/weblog/posts/2007/Sep/18/ResolveUrl-without-Page .However the function assumes that the call is synchronous, in asynchronous call (e.g called from TPL task) HttpContext.Current==null.I had to split my asynchronous method into two-a long asynchronous one, invoked as task and generating relative URL and a post-task, that is calling wwWebUtils.ResolveServerUrl(relativeUrL)The http://www.codeproject.com/Articles/205425/ASP-NET-ResolveUrl-Without-Page  article suggests to useSystem.Web.VirtualPathUtility.ToAbsolute("~/default.aspx");but i expect, it wouldn’t work from asynchronous thread as well.

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  • Example WCF XML-RPC client C# code against custom XML-RPC server implementation?

    - by mr.b
    I have built my own little custom XML-RPC server, and since I'd like to keep things simple, on both server and client side (server side PHP runs, by the way), what I would like to accomplish is to create a simplest possible client in C# using WCF. Let's say that Contract for service exposed via XML-RPC is as follows. [ServiceContract] public interface IContract { [OperationContract(Action="Ping")] string Ping(); // server returns back string "Pong" [OperationContract(Action="Echo")] string Echo(string message); // server echoes back whatever message is } So, there are two example methods, one without any arguments, and another with simple string argument, both returning strings (just for sake of example). Service is exposed via http. What's next? Thanks for reading! P.S. I have done my homework of googling around for samples and similar, but all that I could come up with are some blog-related samples that use existing (and very big) classes, which implement correct IContract (or IBlogger) interfaces, so that most of what I am interested is hidden below several layers of abstraction...

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  • How do i specify wcf behaviorExtension class type without the assembly version number?

    - by Mr Bell
    I have a web app that uses a WCF service that utilizes a behaviorExtension like so: <behaviorExtensions> <add name="clientCredentialsExtension" type="Simon.Web.Giftcard.WCFSecurity.ClientCredentialsExtensionElement, Simon.Web.Giftcard, Version=1.0.3736.20411, Culture=neutral, PublicKeyToken=null"/> </behaviorExtensions> The problem is this web app's version changes with every compile (i think) and thus invalidating this entry. How can I avoid having to change the version number every time I compile this? Can I specify the extension in code somewhere?

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  • Multiple Operations with soapAction="" in a WCF Service Contract?

    - by John Saunders
    I need to create a service that will be "called back" by a third party. As a result, I need to conform to their WSDL. Their WSDL has all of the operations defined with soapAction="", so my service needs to do the same. Unfortunately, I'm getting the error: The operations A and B have the same action (). Every operation must have a unique action value. In ASMX web services, there was a mode where the soapAction would not be used, but the name of the request element would be used instead. Is there some way using WCF not only to dispatch on the request element, but also to emit a WSDL with no soapAction?

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  • Logging exceptions in WCF with IErrorHandler inside HandleError or ProvideFault?

    - by Dannerbo
    I'm using IErrorHandler to do exception handling in WCF and now I want to log the exceptions, along with the stack trace and the user that caused the exception. I've read everywhere to put the logging in the HandleError method, and not the ProvideFault method. My question is, why? The only way I can see to get the user that caused the exception is: OperationContext.Current.IncomingMessageProperties.Security.ServiceSecurityContext.PrimaryIdentity ...But this only seems to work inside ProvideFault, and not inside HandleError. Is there a way to get the user inside HandleError?

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  • Moving from WCF RIA Beta to RC: best practices?

    - by Duncan Bayne
    I have an existing WCF RIA project built on the Release Candidate; I'm now moving to the Release version & have discovered many changes. David Scruggs made the following comment on his (MSDN) blog: "If you’ve written anything in SIlverlight 4 RIA Services, you’ll need to rewrite it. There has been a lot of refactoring and namespace moves." Having made a brief attempt to compile the old solution with the new RIA framework I'm inclined to agree. My current plan is to: remove the Silverlight Business Application projects from the Solution rebuild the EF4 items from the database create a new Silverlight Business Application project re-add the files (XAML, CS) from the old Silverlight Business Application project Does this sound like a reasonable approach? I think it's cleaner than trying to manually alter the existing project.

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  • WCF fails to deserialize correct(?) response message security headers (Security header is empty)

    - by Soeteman
    I'm communicating with an OC4J webservice, using a WCF client. The client is configured as follows: <basicHttpBinding> <binding name="MyBinding"> <security mode="TransportWithMessageCredential"> <transport clientCredentialType="None" proxyCredentialType="None" realm=""/> <message clientCredentialType="UserName" algorithmSuite="Default"/> </security> </binding> My clientcode looks as follows: ServicePointManager.CertificatePolicy = new AcceptAllCertificatePolicy(); string username = ConfigurationManager.AppSettings["user"]; string password = ConfigurationManager.AppSettings["pass"]; // client instance maken WebserviceClient client = new WebserviceClient(); client.Endpoint.Binding = new BasicHttpBinding("MyBinding"); // credentials toevoegen client.ClientCredentials.UserName.UserName = username; client.ClientCredentials.UserName.Password = password; //uitvoeren request var response = client.Ping(); I've altered the CertificatePolicy to accept all certificates, because I need to insert Charles (ssl proxy) in between client and server to intercept the actual Xml that is sent across te wire. My request looks as follows: <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"> <s:Header> <o:Security s:mustUnderstand="1" xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"> <u:Timestamp u:Id="_0"> <u:Created>2010-04-01T09:47:01.161Z</u:Created> <u:Expires>2010-04-01T09:52:01.161Z</u:Expires> </u:Timestamp> <o:UsernameToken u:Id="uuid-9b39760f-d504-4e53-908d-6125a1827aea-21"> <o:Username>user</o:Username> <o:Password o:Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username- token-profile-1.0#PasswordText">pass</o:Password> </o:UsernameToken> </o:Security> </s:Header> <s:Body> <getPrdStatus xmlns="http://mynamespace.org/wsdl"> <request xmlns="" xmlns:a="http://mynamespace.org/wsdl" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <a:IsgrStsRequestTypeUser> <a:prdCode>LEPTO</a:prdCode> <a:sequenceNumber i:nil="true" /> <a:productionType i:nil="true" /> <a:statusDate>2010-04-01T11:47:01.1617641+02:00</a:statusDate> <a:ubn>123456</a:ubn> <a:animalSpeciesCode>RU</a:animalSpeciesCode> </a:IsgrStsRequestTypeUser> </request> </getPrdStatus> </s:Body> </s:Envelope> In return, I receive the following response: <env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns0="http://mynamespace.org/wsdl"> <env:Header> <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" env:mustUnderstand="1" /> </env:Header> <env:Body> <ns0:getPrdStatusResponse> <result> <ns0:IsgrStsResponseTypeUser> <ns0:prdCode>LEPTO</ns0:prdCode> <ns0:color>green</ns0:color> <ns0:stsCode>LEP1</ns0:stsCode> <ns0:sequenceNumber xsi:nil="1" /> <ns0:productionType xsi:nil="1" /> <ns0:IAndRCode>00</ns0:IAndRCode> <ns0:statusDate>2010-04-01T00:00:00.000+02:00</ns0:statusDate> <ns0:description>Gecertificeerd vrij</ns0:description> <ns0:ubn>123456</ns0:ubn> <ns0:animalSpeciesCode>RU</ns0:animalSpeciesCode> <ns0:name>gecertificeerd vrij</ns0:name> <ns0:ranking>17</ns0:ranking> </ns0:IsgrStsResponseTypeUser> </result> </ns0:getPrdStatusResponse> </env:Body> </env:Envelope> Why can't WCF deserialize this response header? I'm getting a "Security header is empty" exception: Server stack trace: at System.ServiceModel.Security.ReceiveSecurityHeader.Process(TimeSpan timeout) at System.ServiceModel.Security.TransportSecurityProtocol.VerifyIncomingMessageCore(Message& message, TimeSpan timeout) at System.ServiceModel.Security.TransportSecurityProtocol.VerifyIncomingMessage(Message& message, TimeSpan timeout) at System.ServiceModel.Security.SecurityProtocol.VerifyIncomingMessage(Message& message, TimeSpan timeout, SecurityProtocolCorrelationState[] correlationStates) at System.ServiceModel.Channels.SecurityChannelFactory`1.SecurityRequestChannel.ProcessReply(Message reply, SecurityProtocolCorrelationState correlationState, TimeSpan timeout) at System.ServiceModel.Channels.SecurityChannelFactory`1.SecurityRequestChannel.Request(Message message, TimeSpan timeout) at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Who knows what is going on here? I've already tried Rick Strahl's suggestion and removed the timestamp from the request header. Any help greatly appreciated!

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  • How to Maintain per-Client State in a WCF Service?

    - by tbischel
    I've created a WCF service in which I would like it to maintain state between calls from the client. I figured the easiest way to do this was to add this attribute to the service: [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)] since this is supposed to keep a separate service alive for each client over the life of the client proxy (or timeout in the extreme case). I also added a test function that tracks a list of user inputs, and spits out a concatenated string with all the inputs over the life of the service. When I run this in the test client generated by visual studio, I find that the list I was using to hold past data is reset with each call. Is there something else I need to do to maintain state per session?

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  • How do I modify my WCF service to work with ASP.NET pages?

    - by Scott
    I created a WCF service (.NET 3.5) that grabs data from a db and returns a list of objects. It works just fine. I tested it using the WCFTestClient application and got the desired results. Now, I tried to create an ASP.NET web application and consume the service. After enabling <serviceDebug includeExceptionDetailInFaults="true"/> in the config file, the error message is "Object reference not set to an instance of an object." How do I modify the service to work with ASP.NET? Thanks!

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  • Use ISAPI filter to trace and time a WCF call?

    - by Andrew Burke
    I'm building a web application using WCF that will be consumed by other applications as a service. Our app will be installed on a farm of web services and load balanced for scalability purposes. Occasionally we run into problems specific to one web server and we'd like to be able to determine from the response which web server the request was processed by and possibly timing information as well. For example, this request was processed by WebServer01 and the request took 200ms to finish. The first solution that came to mind was to build an ISAPI filter to add an HTTP header that stores this information in the response. This strikes me as the kind of thing somebody must have done before. Is there a better way to do this or an off-the-shelf ISAPI filter that I can use for this? Thanks in advance

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