Client Side Message Inspector

ConsoleOutputBehavior.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ServiceModel.Description;

namespace dotnet_topics
{
    public class ConsoleOutputBehavior : IEndpointBehavior
    {
        #region IEndpointBehavior Members

        public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
        {
        }

        public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
        {
            ConsoleOutputMessageInspector inspector = new ConsoleOutputMessageInspector();
            clientRuntime.MessageInspectors.Add(inspector);           
        }

        public void ApplyDispatchBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.EndpointDispatcher endpointDispatcher)
        {
            throw new Exception("Behavior not supported on the Server side!");
        }

        public void Validate(ServiceEndpoint endpoint)
        {
        }

        #endregion
    }
}

ConsoleOutputBehaviorExtensionElement.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ServiceModel.Configuration;

namespace dotnet_topics
{
    public class ConsoleOutputBehaviorExtensionElement : BehaviorExtensionElement
    {
        public ConsoleOutputBehaviorExtensionElement()
        {
        }

        public override Type BehaviorType
        {
            get
            {
                return typeof(ConsoleOutputBehavior);
            }
        }

        protected override object CreateBehavior()
        {
            return new ConsoleOutputBehavior();
        }
    }
}

ConsoleOutputMessageInspector.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ServiceModel.Dispatcher;
using System.ServiceModel.Channels;

namespace dotnet_topics
{
    public class ConsoleOutputMessageInspector : IClientMessageInspector
    {
        public void AfterReceiveReply(ref Message reply, object correlationState)
        {
            MessageBuffer buffer = reply.CreateBufferedCopy(Int32.MaxValue);
            reply = buffer.CreateMessage();
            Console.WriteLine("Received:\n{0}", buffer.CreateMessage().ToString());
        }

        public object BeforeSendRequest(ref Message request, System.ServiceModel.IClientChannel channel)
        {
            MessageBuffer buffer = request.CreateBufferedCopy(Int32.MaxValue);
            request = buffer.CreateMessage();
            Console.WriteLine("Sending:\n{0}", buffer.CreateMessage().ToString());
            return null;
        }
    }
}

web.config

<system.serviceModel>
    <bindings>
      <basicHttpBinding>        
        <binding name="basicHttpBinding_IService1" closeTimeout="00:01:00"
         openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
         bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
         maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text"
         textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
           maxBytesPerRead="4096" maxNameTableCharCount="16384" />                    
        </binding>
      </basicHttpBinding>
    </bindings>
    <client>      
      <endpoint address="http://subhasis-pc/WcfService123/Service1.svc"
       binding="basicHttpBinding" bindingConfiguration="basicHttpBinding_IService1"
       contract="WcfServiceRef123.IService1" name="basicHttpBinding_IService1" behaviorConfiguration="subhasisBehavior">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>
    </client>
    <extensions>
      <behaviorExtensions>
        <add name="ConsoleOutputBehavior" type="dotnet_topics.ConsoleOutputBehaviorExtensionElement, dotnet_topics, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
      </behaviorExtensions>
    </extensions>
    <behaviors>
      <endpointBehaviors>
        <behavior name="subhasisBehavior">
          <ConsoleOutputBehavior />
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>