1. Create a new BasicHttpBinding instance

2. Optionally enable transport security for this service endpoint binding by setting the security mode for the binding to Transport. For details, please see Transport Security.

3. Add a new application endpoint to your service host using the binding instance that you just created. For details about how to add a service endpoint in code, see the How to: Create a Service Endpoint in Code.

4. Enable an HTTP/GET metadata endpoint for your service. For details see How to: Publish Metadata for a Service Using Code.

1. Create a new BasicHttpBinding binding configuration. For details, see the How to: Specify a Service Binding in Configuration.

2. Optionally enable transport security for this service endpoint binding configuration by setting the security mode for the binding to Transport. For details, see Transport Security.

3. Configure a new application endpoint for your service using the binding configuration that you just created. For details about how to add a service endpoint in a configuration file, see the How to: Create a Service Endpoint in Configuration.

4. Enable an HTTP/GET metadata endpoint for your service. For details see the How to: Publish Metadata for a Service Using a Configuration File.

The following example code demonstrates how to add a WCF endpoint that is compatible with ASP.NET Web service clients in code and alternatively in configuration files.

using System;
using System.Collections.Generic;
using System.Text;
using System.ServiceModel;
using System.ServiceModel.Description;
[ServiceContract]
public interface IEcho
{
[OperationContract]
string Echo(string s);
}
public class MyService : IEcho
{
public string Echo(string s)
{
return s;
}
}
class Program
{
static void Main(string[] args)
{
string baseAddress = "http://localhost:8080/wcfselfhost/";
ServiceHost host = new ServiceHost(typeof(MyService), new Uri(baseAddress));
// Create a BasicHttpBinding instance
BasicHttpBinding binding = new BasicHttpBinding();
// Add a service endpoint using the created binding
host.AddServiceEndpoint(typeof(IEcho), binding, "echo1");
host.Open();
Console.WriteLine("Service listening on {0} . . .", baseAddress);
Console.ReadLine();
host.Close();
}
}

>
<system.serviceModel>
<services>
<service name="MyService" behaviorConfiguration="HttpGetMetadata">
<endpoint address="echo2" contract="IEcho" binding="basicHttpBinding" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="HttpGetMetadata">
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>

Ref:How to: Configure WCF Service to Interoperate with ASP.NET Web Service Clients