[ServiceBehavior(ConcurrencyMode =
ConcurrencyMode.Multiple)]

//[MyBehavior]    
    public class Service1 : IService1
    {
        public void Foo()
        {
            DateTime timeCreated = OperationContext.Current.IncomingMessageHeaders.GetHeader<DateTime>("TimeCreate", "http://bured");
            MessageHeader<DateTime> myHeader = new MessageHeader<DateTime>(timeCreated);
            MessageHeader standardHeader = myHeader.GetUntypedHeader("TimeCreate", "http://bured");
            OperationContext.Current.OutgoingMessageHeaders.Add(standardHeader);            
            Thread.Sleep(2000);
        }
        
    }

public void Foo()
    {
        DateTime timeCreated = OperationContext.Current.IncomingMessageHeaders.GetHeader<DateTime>("TimeCreate", "http://temp.org");
        DateTime timeReceived = DateTime.Now;
        TimeSpan ts = timeReceived - timeCreated;
        if (ts.Seconds > 1)
        {            
            FaultException faultEx = new FaultException(
                new FaultReason(String.Format("TimeOut Exception. Time Created message: {0}, Time Received message: {1}", timeCreated, timeReceived)),
                new FaultCode("1"));
            throw faultEx;
        }
    }