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