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  • WCF zero application endpoint exception

    - by Lijo
    Hi Team, I am just trying with various WCF(in .Net 3.0) scenarios. I am using self hosting. I am getting an exception as "Service 'MyServiceLibrary.NameDecorator' has zero application (non-infrastructure) endpoints. This might be because no configuration file was found for your application, or because no service element matching the service name could be found in the configuration file, or because no endpoints were defined in the service element." I have a config file as follows (which has an endpoint) <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <services> <service name="Lijo.Samples.NameDecorator" behaviorConfiguration="WeatherServiceBehavior"> <host> <baseAddresses> <add baseAddress="http://localhost:8010/ServiceModelSamples/FreeServiceWorld"/> </baseAddresses> </host> <endpoint address="" binding="wsHttpBinding" contract="Lijo.Samples.IElementaryService" /> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <behaviors> <serviceBehaviors> <behavior name="WeatherServiceBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="False"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> And a Host as using System.ServiceModel; using System.ServiceModel.Dispatcher; using System.ServiceModel.Channels; using System.ServiceModel.Description; using System.Runtime.Serialization; namespace MySelfHostConsoleApp { class Program { static void Main(string[] args) { System.ServiceModel.ServiceHost myHost = new ServiceHost(typeof(MyServiceLibrary.NameDecorator)); myHost.Open(); Console.ReadLine(); } } } My Service is as follows using System.ServiceModel; using System.Runtime.Serialization; namespace MyServiceLibrary { [ServiceContract(Namespace = "http://Lijo.Samples")] public interface IElementaryService { [OperationContract] CompanyLogo GetLogo(); } public class NameDecorator : IElementaryService { public CompanyLogo GetLogo() { CircleType cirlce = new CircleType(); CompanyLogo logo = new CompanyLogo(cirlce); return logo; } } [DataContract] public abstract class IShape { public abstract string SelfExplain(); } [DataContract(Name = "Circle")] public class CircleType : IShape { public override string SelfExplain() { return "I am a Circle"; } } [DataContract(Name = "Triangle")] public class TriangleType : IShape { public override string SelfExplain() { return "I am a Triangle"; } } [DataContract] [KnownType(typeof(CircleType))] [KnownType(typeof(TriangleType))] public class CompanyLogo { private IShape m_shapeOfLogo; [DataMember] public IShape ShapeOfLogo { get { return m_shapeOfLogo; } set { m_shapeOfLogo = value; } } public CompanyLogo(IShape shape) { m_shapeOfLogo = shape; } } } Could you please help me to understand what I am missing here? Thanks Lijo

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  • Using custom FaultContract object causes 'Add Service Reference' to fail

    - by SpoBo
    Hey, I just noticed something particular. I have an internal stock service which is published through basicHttpBinding, and a customBinding (http+binary) for which metadata is enabled. I also included a mex endpoint for http. We use Visual Studio 2008 & VB.NET Just recently we noticed that we were unable to succesfully add a service reference to this service in our other projects. All that it would generate was the first custom exception we included through a FaultContract (actually, there was only 1 type). if I'd add a simple web reference it would work correctly as well. Also, the WcfClient.exe had no problems either in loading the services. Just VS.NET add service reference wouldn't work. In the service this exception inherits from Exception and is marked as serializable. That's all you're supposed to do, no? Anyway, this had me baffled. If I remove the FaultContract for this custom exception everything works fine. I can add a service reference, no problem. But is there a way I can still have my custom exceptions? Is this a known problem? Thx!

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  • DynamicObject and WCF support

    - by rboarman
    Hi, I was wondering if anyone has had any luck getting a DynamicObject to serialize and work with WCF? Here’s my little test: [DataContract] class MyDynamicObject : DynamicObject { [DataMember] private Dictionary<string, object> _attributes = new Dictionary<string, object>(); public override bool TryGetMember(GetMemberBinder binder, out object result) { string key = binder.Name; result = null; if (_attributes.ContainsKey(key)) result = _attributes[key]; return true; } public override bool TrySetMember(SetMemberBinder binder, object value) { _attributes.Add(binder.Name, value); return true; } } var dy = new MyDynamicObject(); var ser = new DataContractSerializer(typeof(MyDynamicObject)); var mem = new MemoryStream(); ser.WriteObject(mem, dy); The error I get is: System.Runtime.Serialization.InvalidDataContractException was unhandled Message=Type 'ElasticTest1.MyDynamicObject' cannot inherit from a type that is not marked with DataContractAttribute or SerializableAttribute. Consider marking the base type 'System.Dynamic.DynamicObject' with DataContractAttribute or SerializableAttribute, or removing them from the derived type. Any suggestions? Thanks, Rick

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  • silverlight 3: long running wcf call triggers 401.1 (access denied)

    - by sympatric greg
    I have a wcf service consumed by a silverlight 3 control. The Silverlight client uses a basicHttpBindinging that is constructed at runtime from the control's initialization parameters like this: public static T GetServiceClient<T>(string serviceURL) { BasicHttpBinding binding = new BasicHttpBinding(Application.Current.Host.Source.Scheme.Equals("https", StringComparison.InvariantCultureIgnoreCase) ? BasicHttpSecurityMode.Transport : BasicHttpSecurityMode.None); binding.MaxReceivedMessageSize = int.MaxValue; binding.MaxBufferSize = int.MaxValue; binding.Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly; return (T)Activator.CreateInstance(typeof(T), new object[] { binding, new EndpointAddress(serviceURL)}); } The Service implements windows security. Calls were returning as expected until the result set increased to several thousand rows at which time HTTP 401.1 errors were received. The Service's HttpBinding defines closeTime, openTimeout, receiveTimeout and sendTimeOut of 10 minutes. If I limit the size of the resultset the call suceeds. Additional Observations from Fiddler: When Method2 is modified to return a smaller resultset (and avoid the problem), control initialization consists of 4 calls: Service1/Method1 -- result:401 Service1/Method1 -- result:401 (this time header includes element "Authorization: Negotiate TlRMTV..." Service1/Method1 -- result:200 Service1/Method2 -- result:200 (1.25 seconds) When Method2 is configured to return the larger resultset we get: Service1/Method1 -- result:401 Service1/Method1 -- result:401 (this time header includes element "Authorization: Negotiate TlRMTV..." Service1/Method1 -- result:200 Service1/Method2 -- result:401.1 (7.5 seconds) Service1/Method2 -- result:401.1 (15ms) Service1/Method2 -- result:401.1 (7.5 seconds)

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  • How to make active services highly available?

    - by Jader Dias
    I know that with Network Load Balancing and Failover Clusteringwe can make passive services highly available. But what about active apps? Example: One of my apps retrieves some content from a external resource in a fixed interval. I have imagined the following scenarios: Run it in a single machine. Problem: if this instance falls, the content won't be retrieved Run it in each machine of the cluster. Problem: the content will be retrieved multiple times Have it in each machine of the cluster, but run it only in one of them. Each instance will have to check some sort of common resource to decide whether it its turn to do the task or not. When I was thinking about the solution #3 I have wondered what should be the common resource. I have thought of creating a table in the database, where we could use it to get a global lock. Is this the best solution? How does people usually do this? By the way it's a C# .NET WCF app running on Windows Server 2008

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  • Serialization of Entity Framework Models with .NET WCF Rest Service

    - by Chris Phillips
    I'm trying to put together a very simple REST-style interface for communicating with our partners. An example object in the API is a partner, which we'd like to have serialized like this: <partner> <id>ID</id> <name>NAME</name> </partner> This is fairly simply to achieve using the .NET 4.0 WCF REST template if we simply declare a partner class as: public class Partner { public int Id {get; set;} public string Name {get; set;} } But when I use the Entity Framework to define and store Partner objects, the resulting serialization looks something like this: <Partner p1:Id="NCNameString" p1:Ref="NCNameString" xmlns:p1="http://schemas.microsoft.com/2003/10/Serialization/" xmlns="http://schemas.datacontract.org/2004/07/TheTradeDesk.AdPlatform.Provisioning"> <EntityKey p1:Id="NCNameString" p1:Ref="NCNameString" xmlns="http://schemas.datacontract.org/2004/07/System.Data.Objects.DataClasses"> <EntityContainerName xmlns="http://schemas.datacontract.org/2004/07/System.Data">String content</EntityContainerName> <EntityKeyValues xmlns="http://schemas.datacontract.org/2004/07/System.Data"> ... This XML is obviously unacceptable for use as an external API. What are suggested mechanisms for using EF for the data store but maintaining a simple XML serialization interface?

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  • Consuming a WCF Service

    - by Lijo
    Hi I created a WCF service which is hosted in windows service. I created a proxy using svcutil “svcutil.exe http://localhost:8000/ServiceModelSamples/FreeServiceWorld?wsdl” It generated an output.config file and proxy class. The output.config has the following element <client> <endpoint address="http://localhost:8000/ServiceModelSamples/FreeServiceWorld" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IWeather" contract="IWeather" name="WSHttpBinding_IWeather"> <identity> <servicePrincipalName value="host/D471DTRV.ustr.com" /> </identity> </endpoint> </client> I created a website (as client) and added a new C# file (MyFile.cs) into it. I copied the contents of the proxy class into MyFile.cs. [The output.config is not copied to the web site] In the code behnid of aspx, I am using the following code WeatherClient client= new WeatherClient("WSHttpBinding_IWeather"); It throws an exception as “Could not find endpoint element with name 'WSHttpBinding_IWeather' and contract 'IWeather' in the ServiceModel client configuration section.” Could you please help me to understand the missing link here? Thanks Lijo

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  • SQL Reporting Services - Subreports Broken into multiple columns

    - by devin
    Hi, I inherited an SQL Reporting Services .rdl project from somebody and need help fixing some functionality. In each row of the report, there is a subreport. In order to save space the subreport is divided into 3. Such that in each row of the report, it splits the data of the subreport into 3 smaller tables. Right now, it fills these 3 subreports horizontally. (ie. if the result has 9 values, the first subtable will have 1, 4 & 7, the second subtable will have 2, 5 & 8, etc) Is there a way to have it fill the subtables vertically? (ie. the first subtable would have 1,2 & 3) Thanks!

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  • Best way to learn iphone audio queue services, step by step tutorial

    - by optician
    Hi Everyone, I'm trying to learn how to handle audio at a fairly low level with audio queue services. I have been progrmaing in memory managed languages for quite a while, and have just completed the c programing tutorial by vtc (2007). This has left me comfortable with the understanding of pointers and memory allocation, but the apple documention still leaves me wanting for a simpler implenation and explaination. Maybe I need to learn objective c and cocoa better. I have heard that this book is good. Cocoa(R) Programming for Mac(R) OS X (3rd Edition) Could someone suggest a learning path that is going to help me get an better understanding of working with audio and an iphone. I want to be able to play mp3 files back and also alter the pitch of them as they are playing. I am prepared that I may have to temporarily convert the mp3 files into pcm files to do things like that to them. Thanks everyone.

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  • WCF- Large Data

    - by Pinu
    I have a WCF Web Service with basicHTTPBinding , the server side the transfer mode is streamedRequest as the client will be sending us large file in the form of memory stream. But on client side when i use transfer mode as streamedRequest its giving me a this errro "The remote server returned an error: (400) Bad Request" And when i look in to trace information , i see this as the error message Exception: There is a problem with the XML that was received from the network. See inner exception for more details. InnerException: The body of the message cannot be read because it is empty. I am able to send up to 5MB of data using trasfermode as buffered , but it will effect the performance of my web service in the long run , if there are many clients who are trying to access the service in buffered transfer mode. SmartConnect.Service1Client Serv = new SmartConnectClient.SmartConnect.Service1Client(); SmartConnect.OrderCertMailResponse OrderCert = new SmartConnectClient.SmartConnect.OrderCertMailResponse(); OrderCert.UserID = "abcd"; OrderCert.Password = "7a80f6623"; OrderCert.SoftwareKey = "90af1"; string applicationDirectory = @"\\inid\utty\Bran"; byte[] CertMail = File.ReadAllBytes(applicationDirectory + @"\5mb_test.zip"); MemoryStream str = new MemoryStream(CertMail); //OrderCert.Color = true; //OrderCert.Duplex = false; //OrderCert.FirstClass = true; //OrderCert.File = str; //OrderCert.ReturnAddress1 = "Test123"; //OrderCert.ReturnAddress2 = "Test123"; //OrderCert.ReturnAddress3 = "Test123"; //OrderCert.ReturnAddress4 = "Test123"; OrderCert.File = str; //string OrderNumber = ""; //string Password = OrderCert.Password; //int ReturnCode = 0; //string ReturnMessage = ""; //string SoftwareKey = OrderCert.SoftwareKey; //string UserID = OrderCert.UserID; //OrderCert.File = str; MemoryStream FileStr = str; Serv.OrderCertMail(OrderCert); // Serv.OrderCertMail(ref OrderNumber, ref Password, ref ReturnCode, ref ReturnMessage, ref SoftwareKey, ref UserID, ref FileStr ); lblON.Text = OrderCert.OrderNumber; Serv.Close(); // My Web Service - Service Contract [OperationContract] OrderCertMailResponse OrderCertMail(OrderCertMailResponse OrderCertMail); [MessageContract] public class OrderCertMailResponse { string userID = ""; string password = ""; string softwareID = ""; MemoryStream file = null; //MemoryStream str = null; [MessageHeader] //[DataMember] public string UserID { get { return userID; } set { userID = value; } } [MessageHeader] //[DataMember] public string Password { get { return password; } set { password = value; } } [MessageHeader] //[DataMember] public string SoftwareKey { get { return softwareID; } set { softwareID = value; } } [MessageBodyMember] // [DataMember] public MemoryStream File { get { return file; } set { file = value; } } [MessageHeader] //[DataMember] public string ReturnMessage; [MessageHeader] //[DataMember] public int ReturnCode; [MessageHeader] public string OrderNumber; //// Control file fields //[MessageHeader] ////[DataMember] //public string ReturnAddress1; //[MessageHeader] ////[DataMember] //public string ReturnAddress2; //[MessageHeader] ////[DataMember] //public string ReturnAddress3; //[MessageHeader] ////[DataMember] //public string ReturnAddress4; //[MessageHeader] ////[DataMember] //public bool FirstClass; //[MessageHeader] ////[DataMember] //public bool Color; //[MessageHeader] ////[DataMember] //public bool Duplex; } [ServiceBehavior(IncludeExceptionDetailInFaults = true)] public class Service1 : IService1 { public OrderCertMailResponse OrderCertMail(OrderCertMailResponse OrderCertMail) { OrderService CertOrder = new OrderService(); ClientUserInfo Info = new ClientUserInfo(); ControlFileInfo Control = new ControlFileInfo(); //Info.Password = "f2496623"; // hard coded password for development testing purposes //Info.SoftwareKey = "6dbb71"; // hard coded software key this is a developement software key //Info.UserName = "sdfs"; // hard coded UserID - for testing Info.UserName = OrderCertMail.UserID.ToString(); Info.Password = OrderCertMail.Password.ToString(); Info.SoftwareKey = OrderCertMail.SoftwareKey.ToString(); //Control.ReturnAddress1 = OrderCertMail.ReturnAddress1; //Control.ReturnAddress2 = OrderCertMail.ReturnAddress2; //Control.ReturnAddress3 = OrderCertMail.ReturnAddress3; //Control.ReturnAddress4 = OrderCertMail.ReturnAddress4; //Control.CertMailFirstClass = OrderCertMail.FirstClass; //Control.CertMailColor = OrderCertMail.Color; //Control.CertMailDuplex = OrderCertMail.Duplex; //byte[] CertFile = new byte[0]; //byte[] CertFile = null; //string applicationDirectory = @"\\intrepid\utility\Bryan"; // byte[] CertMailFile = File.ReadAllBytes(applicationDirectory + @"\3mb_test.zip"); //MemoryStream str = new MemoryStream(CertMailFile); OrderCertMailResponseClass OrderCertResponse = CertOrder.OrderCertmail(Info,Control,OrderCertMail.File); OrderCertMail.ReturnMessage = OrderCertResponse.ReturnMessage.ToString(); OrderCertMail.ReturnCode = Convert.ToInt32(OrderCertResponse.ReturnCode.ToString()); OrderCertMail.OrderNumber = OrderCertResponse.OrderNumber; return OrderCertMail; }

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  • Editing Data in Child Window with RIA Services and Silverlight 4

    - by Rick Arthur
    Is it possible to edit data in a SilverLight Child window when using RIA Services and Silverlight 4? It sounds like a simple enough question, but I have not been able to get any combination of scenarios to work. Simply put, I am viewing data in a grid that was populated through a DomainDataSource. Instead of editing the data on the same screen (this is the pattern that ALL of the Microsoft samples seem to use), I want to open a child window, edit the data and return. Surely this is a common design pattern. If anyone knows of a sample out there that uses this pattern, a link would be much appreciated. Thanks, Rick Arthur

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  • Disconnected Service Agent from the Patterns and Practices group at Microsoft

    - by VansFannel
    Hello! I'm developing a WinForm application for Windows Mobile 5.0 and above, using C#, .NET Compact Framework 2.0 SP2. This application uses Web Services and I've found the Disconnected Service Agent from the patterns and practices group at Microsoft, because I want to deal with disconnected eviroments. Is there any other software to deal with web services connections on disconnected enviroments? Thank you!

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  • Protect .net Web Service URL

    - by Nirmal
    Hello All... I have created Web Service using Asp.net 3.5. Now it's working perfectly in live windows server, and giving me perfect xml while invoking it using some url like : http://www.somedomain.com/Service.asmx?op=fetchData Now My question is when I am accessing url like : http://www.somedomain.com/Service.asmx it's listing my created web services. What if I don't wanna list down the available web services to end users. Thanks in advance...

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  • 401 error when consuming a Web service with HTTP Basic authentication using CXF

    - by seanhodges
    I'm trying to consume a remote Web service that uses HTTP basic authentication, using Apache CXF, within a JUnit test. The error I am getting is: javax.xml.ws.WebServiceException: Failed to access the WSDL at: http://localhost:8080/services/MyService?wsdl. It failed with: Server returned HTTP response code: 401 for URL: http://localhost:8080/services/MyService?wsdl. at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.tryWithMex(RuntimeWSDLParser.java:151) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.parse(RuntimeWSDLParser.java:133) at com.sun.xml.internal.ws.client.WSServiceDelegate.parseWSDL(WSServiceDelegate.java:254) at com.sun.xml.internal.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:217) at com.sun.xml.internal.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:165) at com.sun.xml.internal.ws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:93) at javax.xml.ws.Service.<init>(Service.java:76) at com.wave2.marketplace.importer.impl.adportal.ws.MyServiceService.<init>(MyServiceService.java:37) at com.wave2.marketplace.importer.impl.adportal.MyWSTest.testConsumingTheWS(MyWSTest.java:22) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at junit.framework.TestCase.runTest(TestCase.java:168) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at junit.framework.TestSuite.runTest(TestSuite.java:232) at junit.framework.TestSuite.run(TestSuite.java:227) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.io.IOException: Server returned HTTP response code: 401 for URL: http://localhost:8080/services/MyService?wsdl at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1269) at java.net.URL.openStream(URL.java:1029) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.createReader(RuntimeWSDLParser.java:793) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.resolveWSDL(RuntimeWSDLParser.java:251) at com.sun.xml.internal.ws.wsdl.parser.RuntimeWSDLParser.parse(RuntimeWSDLParser.java:118) ... 26 more Having read this StackOverflow post, I have attempted to add the auth credentials to my request context, as follows: @Test public void testConsumingTheWS() throws Exception { URL wsdl = new URL("http://localhost:8080/services/MyService?wsdl"); MyServiceService provider = new MyServiceService(wsdl); // <-- Error occurs here MyService service = provider.getMyService(); BindingProvider binding = (BindingProvider)service; binding.getRequestContext().put(BindingProvider.USERNAME_PROPERTY, "username"); binding.getRequestContext().put(BindingProvider.PASSWORD_PROPERTY, "password"); Ping out = service.getPing(); assertNotNull(out); } However, as my in-line comment indicates, the error is occurring before the BindingProvider code is reached, so the error remains the same. I did have a read of this article and its follow-up, but so far I've had trouble determining how to go about adding the interceptor code without the use of Spring (this is for a JUnit test). How might I go about authenticating against this Web service?

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  • Terminal services and memory limits

    - by Mark Wassell
    Is there a way in Terminal Services to set limits on memory related parameters for a process. For example working set size and, possibly, if it makes sense, total virtual memory allocation for the session? To turn the question around, we have an application which cannot allocate as much virtual memory running on a terminal server as it can when running on a desktop PC (both I would expect to have a limit of 2GB for user mode address space) and I was wondering if there is another limit for processes or users on a terminal server. Perhaps even 2GB per user rather than per process.

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  • JEE Web Applications vs Web Services

    - by Zac
    Can someone confirm or clarify for me: From what I can tell, JEE web apps consist of a Servlet and/or JSP driven dynamic web page being fed back in the HTTP response, triggered by the JEE server receiving a HTTP GET or POST request. From what I can tell, JEE web services also make use of Servlets as the web tier components, however a WS Servlet receives a SOAP message and validates the contents of those messages with whatever WSDL the Servlet is WARed with. The response is also packaged in SOAP and sent back to the requestor. So, from what I can tell, both JEE web apps and WSes use Servlets as the web components, with the only real difference being the protocol used (raw HTTP vs SOAP, which is an extension of HTTP). This is the best I could come up with - am I right? Totally wrong? Close?

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  • Best Practices of fault toleration and reliability for scheduled tasks or services

    - by user177883
    I have been working on many applications which run as windows service or scheduled tasks. Now, i want to make sure that these applications will be fault tolerant and reliable. For example; i have a service that runs every hour. if the service crashes while its operating or running, i d like the application to run again for the same period, to avoid data loss. moreover, i d like the program to report the error with details. My goal is to avoid data loss and not falling behind for running the program. I have built a class library that a user can import into a project. Library is supposed to keep information of running instance of the program, ie. program reads and writes information of running interval, running status etc. This data is stored in a database. I was curious, if there are some best practices to make the scheduled tasks/ windows services fault tolerant and reliable.

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  • NServiceBus pipeline with Distributors

    - by David
    I'm building a processing pipeline with NServiceBus but I'm having trouble with the configuration of the distributors in order to make each step in the process scalable. Here's some info: The pipeline will have a master process that says "OK, time to start" for a WorkItem, which will then start a process like a flowchart. Each step in the flowchart may be computationally expensive, so I want the ability to scale out each step. This tells me that each step needs a Distributor. I want to be able to hook additional activities onto events later. This tells me I need to Publish() messages when it is done, not Send() them. A process may need to branch based on a condition. This tells me that a process must be able to publish more than one type of message. A process may need to join forks. I imagine I should use Sagas for this. Hopefully these assumptions are good otherwise I'm in more trouble than I thought. For the sake of simplicity, let's forget about forking or joining and consider a simple pipeline, with Step A followed by Step B, and ending with Step C. Each step gets its own distributor and can have many nodes processing messages. NodeA workers contain a IHandleMessages processor, and publish EventA NodeB workers contain a IHandleMessages processor, and publish Event B NodeC workers contain a IHandleMessages processor, and then the pipeline is complete. Here are the relevant parts of the config files, where # denotes the number of the worker, (i.e. there are input queues NodeA.1 and NodeA.2): NodeA: <MsmqTransportConfig InputQueue="NodeA.#" ErrorQueue="error" NumberOfWorkerThreads="1" MaxRetries="5" /> <UnicastBusConfig DistributorControlAddress="NodeA.Distrib.Control" DistributorDataAddress="NodeA.Distrib.Data" > <MessageEndpointMappings> </MessageEndpointMappings> </UnicastBusConfig> NodeB: <MsmqTransportConfig InputQueue="NodeB.#" ErrorQueue="error" NumberOfWorkerThreads="1" MaxRetries="5" /> <UnicastBusConfig DistributorControlAddress="NodeB.Distrib.Control" DistributorDataAddress="NodeB.Distrib.Data" > <MessageEndpointMappings> <add Messages="Messages.EventA, Messages" Endpoint="NodeA.Distrib.Data" /> </MessageEndpointMappings> </UnicastBusConfig> NodeC: <MsmqTransportConfig InputQueue="NodeC.#" ErrorQueue="error" NumberOfWorkerThreads="1" MaxRetries="5" /> <UnicastBusConfig DistributorControlAddress="NodeC.Distrib.Control" DistributorDataAddress="NodeC.Distrib.Data" > <MessageEndpointMappings> <add Messages="Messages.EventB, Messages" Endpoint="NodeB.Distrib.Data" /> </MessageEndpointMappings> </UnicastBusConfig> And here are the relevant parts of the distributor configs: Distributor A: <add key="DataInputQueue" value="NodeA.Distrib.Data"/> <add key="ControlInputQueue" value="NodeA.Distrib.Control"/> <add key="StorageQueue" value="NodeA.Distrib.Storage"/> Distributor B: <add key="DataInputQueue" value="NodeB.Distrib.Data"/> <add key="ControlInputQueue" value="NodeB.Distrib.Control"/> <add key="StorageQueue" value="NodeB.Distrib.Storage"/> Distributor C: <add key="DataInputQueue" value="NodeC.Distrib.Data"/> <add key="ControlInputQueue" value="NodeC.Distrib.Control"/> <add key="StorageQueue" value="NodeC.Distrib.Storage"/> I'm testing using 2 instances of each node, and the problem seems to come up in the middle at Node B. There are basically 2 things that might happen: Both instances of Node B report that it is subscribing to EventA, and also that NodeC.Distrib.Data@MYCOMPUTER is subscribing to the EventB that Node B publishes. In this case, everything works great. Both instances of Node B report that it is subscribing to EventA, however, one worker says NodeC.Distrib.Data@MYCOMPUTER is subscribing TWICE, while the other worker does not mention it. In the second case, which seem to be controlled only by the way the distributor routes the subscription messages, if the "overachiever" node processes an EventA, all is well. If the "underachiever" processes EventA, then the publish of EventB has no subscribers and the workflow dies. So, my questions: Is this kind of setup possible? Is the configuration correct? It's hard to find any examples of configuration with distributors beyond a simple one-level publisher/2-worker setup. Would it make more sense to have one central broker process that does all the non-computationally-intensive traffic cop operations, and only sends messages to processes behind distributors when the task is long-running and must be load balanced? Then the load-balanced nodes could simply reply back to the central broker, which seems easier. On the other hand, that seems at odds with the decentralization that is NServiceBus's strength. And if this is the answer, and the long running process's done event is a reply, how do you keep the Publish that enables later extensibility on published events?

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  • Best practices for TDD BDD with code that uses external services / api

    - by adam
    I'm using a twitter gem which basically accesses twitter and lets me grab tweets, timeline etc. Its really good but I have a lot of my code that uses the stuff it returns and I need to test it. The things the gem returns aren't exactly simple strings, there pretty complex objects (scary as well) so im left scratching my head. So basically I'm looking for an answer, book, blog, open-source project that can show me the rights and wrongs of testing around external services. answers that are either not language centric or ruby/rails centric would most greatly be appreciated.

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  • Why does 'localhost' in web references cause SocketExceptions?

    - by Sam
    I have two .net web services deployed to the same IIS server using SSL, one that references the other. If I set that web reference to 'localhost', some calls fail with this exception: System.Web.Services.Protocols.SoapException: Server was unable to process request. --- System.Net.WebException: Unable to connect to the remote server --- System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it If I set it to the actual machine name, it works. Why?

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  • Real time web services

    - by daliz
    Hi everybody, I have a little (maybe the answer could require a book) question about web services and server side programming. But first, a little preamble. Recently we have seen new kind of applications & games using some kind of real-time interaction with a database, or more generally, with other users. I'm talking about shared drawing canvas, games like this , or simple chats, or the Android app "a World of Photo", where in real time you see who is online, to share your photos, etc. Now my question: Are all these apps based on classic TCP client/server architectures or is there a way to make them in a simpler way, like a web platform like LAMP? What I'm asking, in other words is: Can PHP+MySQL (or JSP, or RoR, or any other server language) provide a way to make online users communicate in real time and share data? Is there a way to do that without the ugly and heavy mechanism of temporary tables? Thank you! I hope I've been clear.

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  • SQL Reporting Services Daylight saving time query (pt 2)

    - by ross-starkey
    I posted a question a couple of days ago (SQL Reporting Services Daylight saving time query) which was I received an answer for (thanks very much) but did not elaborate on the whole problem I am experiencing. Not only did I require the returned date time format to account for day light saving but I also need the search parameter @StartDate to allow for DST. Currently if I key in a scheduled start time of 31/03/2010 11:00 and because the SQL DB has already taken the hours difference into consideration I get no results back. If I key in 31/03/2010 10:00 then the correct details are returned. Is there away using T-SQL or the like to get the search parameter to pass the adjusted time to the DB?

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  • How do I actually use Authorization Services?

    - by abrahamvegh
    I've been searching and experimenting for nearly four hours now, so I'm gonna just ask straight up: How can I correctly use the Authorization Services API to show the user a system-level authorization window, the same one you see when you click a lock icon in System Preferences? From what I can tell, there is no way to do it using Cocoa if you want to do it programmatically, and if your goal is to call an executable that normally needs to be called via sudo (in my case, /usr/bin/pmset) you're up a creek without a paddle. I challenge you, I implore you: Please, enlighten me. Thank you. :)

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  • Doing Forms With Just Windows SharePoint Services 3.0?

    - by tekiegreg
    For the most part my organization is happy with WSS 3.0 (no upgrading to MOSS) with one exception, there is really just one form we'd like to put up somehow. It's fairly big form (basically change requests for IT services, on paper it's easily 2 full 8.5 by 11 pages). We thought about Custom ASP.NET coding as a separate stand-alone page or maybe as a web part. What have other people out there done? MOSS and Infopath is not really an option as it really is too expensive for us at this time. Thanks in advance!

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  • Creating and debugging a Sharepoint Services 3.0 WebPart

    - by Filip Ekberg
    I am trying to create a WebPart for my locally installed Sharepoint Services 3.0 and I've followed various tips and guides to get it all working. However somewhere on the road I must have missed something or this is just not "in all the books". When creating an empty Sharepoint WebPart and just hitting F5 to debug it, I get the following message: Error 1 The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'. 0 0 And as this article from microsoft suggests I did enable Negotiate, NTLM. But it's still not working, Any suggestions?

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