private Boolean sendData(List<Model.Model> models)
        {
            Socket sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            byte[] bytes = new byte[26];
            byte[] bytesTotal;
            sender.Connect(IPAddress.Parse(CONSTANTS.NET_IP_ADDRESS_SERVER), CONSTANTS.NET_IP_PORT_SERVER);
            bytesTotal = iLib.serialize(models);
            sender.Send(bytesTotal);
            int i = sender.Receive(bytes);
            sender.Close();
            return (Encoding.UTF8.GetString(bytes) == CONSTANTS.CONFIRM_REPORT_SUCCESSFULLY) ;
        }

                    server = socket.Accept();
                    IPEndPoint remoteClient = (IPEndPoint)server.RemoteEndPoint;
                    clientRemoteAddress = remoteClient.Address;
                    iLib.writeLog(CONSTANTS.MSG_LOG_CONNECTION_ACCEPT + clientRemoteAddress);
                    byte[] dataRecived = getDataSocket(server);
                    if ((dataRecived.Length) > 0)
                    {
                        try
                        {
                            models = iLib.deSerialize(dataRecived);
                            writeData(models);
                            server.Send(Encoding.UTF8.GetBytes(CONSTANTS.CONFIRM_REPORT_SUCCESSFULLY));
                        }
                        catch (System.Runtime.Serialization.SerializationException sE)
                        {
                            iLib.writeLog( clientRemoteAddress+"-"+sE.Message);
                        }
                    }else
                    {
                        server.Send(Encoding.UTF8.GetBytes(CONSTANTS.CONFIRM_REPORT_UNSUCCESSFULLY));
                    }
                }
                catch (SocketException sE)
                {
                    iLib.writeLog(sE.Message);
                }

Binary stream '0' does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.

   [ServiceContract]
    public interface IST
    {
        [OperationContract]
        Boolean writeData(List<Model.Model> models);
        [OperationContract]
        void respond(string str);
    }

 server = new ServiceHost(typeof(Controller), new Uri("localhost:9000/TestService"));
            BasicHttpBinding bHttpB = new BasicHttpBinding();
            server.AddServiceEndpoint(typeof(IServiceTransfer), bHttpB, "");
            server.Open();

EndpointAddress address = new EndpointAddress(new Uri(CONSTANTS.NET_IP_ADDRESS_SERVER));
            BasicHttpBinding binding = new BasicHttpBinding();
            ChannelFactory<IServiceTransfer.IST> factory = new ChannelFactory<IServiceTransfer.IST>(binding, address);
            IServiceTransfer.IST service = factory.CreateChannel();
            return service.writeData(models);

The message with Action 'http://tempuri.org/IST/writeData' cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be because of either a contract mismatch (mismatched Actions between sender and receiver) or a binding/security mismatch between the sender and the receiver.  Check that sender and receiver have the same contract and the same binding (including security requirements, e.g. Message, Transport, None)."

 This may be because of either a contract mismatch (mismatched Actions between sender and receiver)