Custom Binding Imperative
The sample demonstrates how to write imperative code to define and use custom bindings without using a configuration file or a Windows Communication Foundation (WCF) generated client. This sample combines the features provided by the HTTP transport and the reliable session channel to create a reliable HTTP-based binding. This sample is based on the Getting Started Sample that implements a calculator service.
Note
The setup procedure and build instructions for this sample are located at the end of this topic.
On both the client and the service, a custom binding is created that contains two binding elements (Reliable Session and HTTP):
ReliableSessionBindingElement reliableSession = new ReliableSessionBindingElement();
reliableSession.Ordered = true;
HttpTransportBindingElement httpTransport = new HttpTransportBindingElement();
httpTransport.AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous;
httpTransport.HostNameComparisonMode = HostNameComparisonMode.StrongWildcard;
CustomBinding binding = new CustomBinding(reliableSession, httpTransport);
On the service, the binding is used by adding an endpoint to the ServiceHost:
serviceHost.AddServiceEndpoint(typeof(ICalculator), binding, "");
On the client, the binding is used by a ChannelFactory to create a channel to the service:
EndpointAddress address = new EndpointAddress("https://localhost:8000/servicemodelsamples/service");
ChannelFactory<ICalculator> channelFactory = new ChannelFactory<ICalculator>(binding, address);
ICalculator channel = channelFactory.CreateChannel();
This channel is then used to interact with the service:
// Call the Add service operation.
double value1 = 100.00D;
double value2 = 15.99D;
double result = channel.Add(value1, value2);
Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);
When you run the sample, the operation requests and responses are displayed in the client console window. Press ENTER in the client window to shut down the client.
Add(100,15.99) = 115.99
Subtract(145,76.54) = 68.46
Multiply(9,81.25) = 731.25
Divide(22,7) = 3.14285714285714
Press <ENTER> to terminate client.
To set up, build, and run the sample
Be sure you have performed the One-Time Set Up Procedure for the Windows Communication Foundation Samples.
To build the C# or Visual Basic .NET edition of the solution, follow the instructions in Building the Windows Communication Foundation Samples.
To run the sample in a single- or cross-machine configuration, follow the instructions in Running the Windows Communication Foundation Samples.
See Also
Other Resources
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