public static class WsFactory
    {
        public static WsConnectionInfo ConnectionInfo { get; set; }

        static readonly ConcurrentDictionary<Type, ChannelFactory> TypeToFactory =
            new ConcurrentDictionary<Type, ChannelFactory>();

        static T GetChannel<T>()
        {
            if (ConnectionInfo == null)
                throw new ArgumentNullException("ConnectionInfo");

            var factory = (ChannelFactory<T>)TypeToFactory.GetOrAdd(
                typeof(T),
                t =>
                {
                    var serviceName = WsClientHelper.GetServiceName(typeof(T));
                    var address = string.Format("net.tcp://{0}/{1}", ConnectionInfo.BaseAddress, serviceName);
                    var endpointIdentity = EndpointIdentity.CreateDnsIdentity("SimpleSolutionProject-Public");
                    var endpointAddress = new EndpointAddress(new Uri(address), endpointIdentity);

                    var r = new ChannelFactory<T>(WsConfiguration.GetNetTcpBinding(), endpointAddress);
                    r.Endpoint.Behaviors.Add(new DataContractSerializerEndpointBehavior());
                    r.Credentials.ServiceCertificate.Authentication.CertificateValidationMode = X509CertificateValidationMode.None;
                    r.Credentials.UserName.UserName = ConnectionInfo.UserName;
                    r.Credentials.UserName.Password = ConnectionInfo.Password;
                    return r;
                }
            );

            return factory.CreateChannel();
        }
    }

    public static class WsFactory
    {
        public static WsConnectionInfo ConnectionInfo { get; set; }

        static readonly ConcurrentDictionary<Type, ChannelFactory> TypeToFactory =
            new ConcurrentDictionary<Type, ChannelFactory>();

        static T GetChannel<T>()
        {
            if (ConnectionInfo == null)
                throw new ArgumentNullException("ConnectionInfo");

            var factory = (ChannelFactory<T>)TypeToFactory.GetOrAdd(
                typeof(T),
                t =>
                {
                    var serviceName = WsClientHelper.GetServiceName(typeof(T));
                    var address = string.Format("net.tcp://{0}/{1}", ConnectionInfo.BaseAddress, serviceName);
                    var endpointIdentity = EndpointIdentity.CreateDnsIdentity("SimpleSolutionProject-Public");
                    var endpointAddress = new EndpointAddress(new Uri(address), endpointIdentity);

                    var r = new ChannelFactory<T>(WsConfiguration.GetNetTcpBinding(), endpointAddress);
                    r.Endpoint.Behaviors.Add(new DataContractSerializerEndpointBehavior());
                    r.Credentials.ServiceCertificate.Authentication.CertificateValidationMode = X509CertificateValidationMode.None;
                    r.Credentials.UserName.UserName = ConnectionInfo.UserName;
                    r.Credentials.UserName.Password = ConnectionInfo.Password;
                    return r;
                }
            );

            return factory.CreateChannel();
        }
    }