An extension method for ICommunicationObject derived WCF types that enables exception-safe disposal.

ICommunicationObjectExtensions.cs

using System;
using System.ServiceModel;

namespace Balioglu
{
    public static class ICommunicationObjectExtensions
    {
        /// <summary>
        /// Closes or aborts the specified communication object depending on its state without
        /// throwing an exception.
        /// </summary>
        public static void SafeDispose(this ICommunicationObject communicationObject)
        {
            if (communicationObject == null)
            {
                throw new ArgumentNullException("communicationObject");
            }

            if (communicationObject.State == CommunicationState.Faulted)
            {
                communicationObject.Abort();
            }
            else
            {
                try
                {
                    communicationObject.Close();
                }
                catch (CommunicationException)
                {
                    communicationObject.Abort();
                }
                catch (TimeoutException)
                {
                    communicationObject.Abort();
                }
            }
        }
    }
}