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POWCF service callback not called
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  1. POWCF service callback not called
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    copied!<p>I am using tcp binding in WCF service and my callback at client side in not getting called.This is my code</p> <p>Service </p> <pre><code> public interface IMyContractCallback { [OperationContract(IsOneWay = true)] void OnCallback(); } [ServiceContract(CallbackContract = typeof (IMyContractCallback),SessionMode = SessionMode.Required)] public interface IService1 { [OperationContract(IsOneWay = true)] void DoSomething(); [OperationContract] int GetCount(); } public class Service1 : IService1 { private int count=0; public int GetCount() { return count; } public void DoSomething() { count++; Console.WriteLine("increased count"); IMyContractCallback callback = OperationContext.Current.GetCallbackChannel&lt;IMyContractCallback&gt;(); if ((callback as IChannel).State == CommunicationState.Opened) { callback.OnCallback(); } } } </code></pre> <p>and my client is </p> <pre><code>public class App1 { private MyServiceCallback callback; private InstanceContext context; private Service1Client proxy; public App1() { callback=new MyServiceCallback(); context = new InstanceContext(callback); var factory = new DuplexChannelFactory&lt;IService1&gt;(callback, "EndPointTCP"); IService1 proxy = factory.CreateChannel(); callback.proxy = proxy; proxy.DoSomething(); } } public class MyServiceCallback : IService1Callback { public IService1 proxy { get; set; } public void OnCallback() { Console.WriteLine("Callback thread = " + Thread.CurrentThread.ManagedThreadId); Console.WriteLine(proxy.GetCount()); } } </code></pre> <p>I face two issues:</p> <p>1.I dont receive callback from DoSomething with above mentioned code. 2.If I declare DoSomething as Twoway ,I do receive callback but it throws exception "Server did not provide a meaningful reply"</p> <p>My client config</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;netTcpBinding&gt; &lt;binding name="EndPointTCP" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions" hostNameComparisonMode="StrongWildcard" listenBacklog="10" maxBufferPoolSize="524288" maxBufferSize="65536" maxConnections="10" maxReceivedMessageSize="65536"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /&gt; &lt;reliableSession ordered="true" inactivityTimeout="00:20:00" enabled="true" /&gt; &lt;security mode="Transport"&gt; &lt;transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" /&gt; &lt;message clientCredentialType="Windows" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/netTcpBinding&gt; &lt;wsDualHttpBinding&gt; &lt;binding name="EndPointHTTP" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /&gt; &lt;reliableSession ordered="true" inactivityTimeout="00:10:00" /&gt; &lt;security mode="Message"&gt; &lt;message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/wsDualHttpBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint address="masked" binding="wsDualHttpBinding" bindingConfiguration="EndPointHTTP" contract="ServiceReference1.IService1" name="EndPointHTTP"&gt; &lt;identity&gt; &lt;servicePrincipalName value="masked" /&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;endpoint address="masked" binding="netTcpBinding" bindingConfiguration="EndPointTCP" contract="ServiceReference1.IService1" name="EndPointTCP"&gt; &lt;identity&gt; &lt;servicePrincipalName value="masked" /&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;/client&gt; &lt;/system.serviceModel&gt; &lt;/configuration&gt; </code></pre> <p>my Service config</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;configuration&gt; &lt;system.web&gt; &lt;compilation debug="true" targetFramework="4.0"/&gt; &lt;httpRuntime maxRequestLength="102400" /&gt; &lt;/system.web&gt; &lt;system.diagnostics&gt; &lt;sources&gt; &lt;source name="System.ServiceModel" switchValue="Information, ActivityTracing" propagateActivity="true"&gt; &lt;listeners&gt; &lt;add name="traceListener" type="System.Diagnostics.XmlWriterTraceListener" initializeData= "d:\log\Traces.svclog" /&gt; &lt;/listeners&gt; &lt;/source&gt; &lt;/sources&gt; &lt;/system.diagnostics&gt; &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;netTcpBinding&gt; &lt;binding name="TcpBinding" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" portSharingEnabled="true" &gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /&gt; &lt;security mode="Transport"/&gt; &lt;reliableSession enabled="true" /&gt; &lt;/binding&gt; &lt;/netTcpBinding&gt; &lt;/bindings&gt; &lt;services&gt; &lt;service behaviorConfiguration="WcfService2.MyServiceBehaviour" name="WcfService2.Service1"&gt; &lt;endpoint address="" binding="wsDualHttpBinding" bindingConfiguration="" name="EndPointHTTP" contract="WcfService2.IService1" /&gt; &lt;endpoint address="" binding="netTcpBinding" bindingConfiguration="TcpBinding" name="EndPointTCP" contract="WcfService2.IService1" isSystemEndpoint="false" /&gt; &lt;endpoint address="mex" binding="mexTcpBinding" bindingConfiguration="" name="mexpoint" contract="IMetadataExchange" /&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="WcfService2.MyServiceBehaviour"&gt; &lt;serviceMetadata httpGetEnabled="false" /&gt; &lt;serviceThrottling maxConcurrentSessions="10000"/&gt; &lt;serviceDebug includeExceptionDetailInFaults="true" /&gt; &lt;dataContractSerializer maxItemsInObjectGraph="2147483647" /&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; &lt;system.webServer&gt; &lt;modules runAllManagedModulesForAllRequests="true" /&gt; &lt;directoryBrowse enabled="true" showFlags="Date, Time, Size, Extension, LongDate" /&gt; &lt;/system.webServer&gt; &lt;/configuration&gt; </code></pre>
 

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