Thread.sleep

uuuuggglyyyyyyyyyyyyyy :(

Client/Client.cs

@@ -0,0 +1,292 @@
+using System;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using ProftaakRH;
+
+namespace Client
+{
+    public class Client : IDataReceiver
+    {
+        private TcpClient client;
+        private NetworkStream stream;
+        private byte[] buffer = new byte[1024];
+        private bool connected;
+        private byte[] totalBuffer = new byte[1024];
+        private int totalBufferReceived = 0;
+        private EngineConnection engineConnection;
+        private bool sessionRunning = false;
+        private IHandler handler = null;
+
+
+        public Client() : this("localhost", 5555)
+        {
+
+        }
+
+        public Client(string adress, int port)
+        {
+            this.client = new TcpClient();
+            this.connected = false;
+            client.BeginConnect(adress, port, new AsyncCallback(OnConnect), null);
+        }
+
+        /// <summary>
+        /// initializes the VR engine and sets the callbacks
+        /// </summary>
+        private void initEngine()
+        {
+            engineConnection = EngineConnection.INSTANCE;
+            engineConnection.OnNoTunnelId = retryEngineConnection;
+            engineConnection.OnSuccessFullConnection = engineConnected;
+            if (!engineConnection.Connected) engineConnection.Connect();
+        }
+
+        /// <summary>
+        /// retries to connect to the VR engine if no tunnel id was found
+        /// </summary>
+        private void retryEngineConnection()
+        {
+            Console.WriteLine("-- Could not connect to the VR engine. Please make sure you are running the simulation!");
+            Console.WriteLine("-- Press ENTER to retry connecting to the VR engine.");
+            Console.WriteLine("-- Press 'q' and then ENTER to not connect to the VR engine");
+            string input = Console.ReadLine();
+            if (input == string.Empty) engineConnection.CreateConnection();
+            else
+            {
+                Console.WriteLine("Skipping connecting to VR engine...");
+                engineConnection.Stop();
+            }
+            
+        }
+
+        private void engineConnected()
+        {
+            Console.WriteLine("successfully connected to VR engine");
+            engineConnection.initScene();
+            if (engineConnection.Connected && sessionRunning && !engineConnection.FollowingRoute) engineConnection.StartRouteFollow();
+        }
+
+        /// <summary>
+        /// callback method for when the TCP client is connected
+        /// </summary>
+        /// <param name="ar">the result of the async read</param>
+        private void OnConnect(IAsyncResult ar)
+        {
+            this.client.EndConnect(ar);
+            Console.WriteLine("TCP client Verbonden!");
+
+
+            this.stream = this.client.GetStream();
+
+            tryLogin();
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+        }
+
+        /// <summary>
+        /// callback method for when there is a message read
+        /// </summary>
+        /// <param name="ar">the result of the async read</param>
+        private void OnRead(IAsyncResult ar)
+        {
+            int receivedBytes = this.stream.EndRead(ar);
+
+            if (totalBufferReceived + receivedBytes > 1024)
+            {
+                throw new OutOfMemoryException("buffer too small");
+            }
+            Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, receivedBytes);
+            totalBufferReceived += receivedBytes;
+
+            int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            while (totalBufferReceived >= expectedMessageLength)
+            {
+                //volledig packet binnen
+                byte[] messageBytes = new byte[expectedMessageLength];
+                Array.Copy(totalBuffer, 0, messageBytes, 0, expectedMessageLength);
+
+
+                byte[] payloadbytes = new byte[BitConverter.ToInt32(messageBytes, 0) - 5];
+
+                Array.Copy(messageBytes, 5, payloadbytes, 0, payloadbytes.Length);
+
+                string identifier;
+                bool isJson = DataParser.getJsonIdentifier(messageBytes, out identifier);
+                if (isJson)
+                {
+                    switch (identifier)
+                    {
+                        case DataParser.LOGIN_RESPONSE:
+                            string responseStatus = DataParser.getResponseStatus(payloadbytes);
+                            if (responseStatus == "OK")
+                            {
+                                Console.WriteLine("Username and password correct!");
+                                this.connected = true;
+                                //initEngine();
+                            }
+                            else
+                            {
+                                Console.WriteLine($"login failed \"{responseStatus}\"");
+                                tryLogin();
+                            }
+                            break;
+                        case DataParser.START_SESSION:
+                            Console.WriteLine("Session started!");
+                            this.sessionRunning = true;
+                            if (engineConnection.Connected && !engineConnection.FollowingRoute) engineConnection.StartRouteFollow();
+                            sendMessage(DataParser.getStartSessionJson());
+                            break;
+                        case DataParser.STOP_SESSION:
+                            Console.WriteLine("Stop session identifier");
+                            this.sessionRunning = false;
+                            sendMessage(DataParser.getStopSessionJson());
+                            break;
+                        case DataParser.SET_RESISTANCE:
+                            Console.WriteLine("Set resistance identifier");
+                            if (this.handler == null)
+                            {
+                                Console.WriteLine("handler is null");
+                                sendMessage(DataParser.getSetResistanceResponseJson(false));
+                            }
+                            else
+                            {
+                                this.handler.setResistance(DataParser.getResistanceFromJson(payloadbytes));
+                                sendMessage(DataParser.getSetResistanceResponseJson(true));
+                            }
+                            break;
+                        default:
+                            Console.WriteLine($"Received json with identifier {identifier}:\n{Encoding.ASCII.GetString(payloadbytes)}");
+                            break;
+                    }
+                }
+                else if (DataParser.isRawData(messageBytes))
+                {
+                    Console.WriteLine($"Received data: {BitConverter.ToString(payloadbytes)}");
+                }
+
+                totalBufferReceived -= expectedMessageLength;
+                expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            }
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+
+        }
+
+        /// <summary>
+        /// starts sending a message to the server
+        /// </summary>
+        /// <param name="message">the message to send</param>
+        private void sendMessage(byte[] message)
+        {
+            stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// callback method for when a message is fully written to the server
+        /// </summary>
+        /// <param name="ar">the async result representing the asynchronous call</param>
+        private void OnWrite(IAsyncResult ar)
+        {
+            this.stream.EndWrite(ar);
+        }
+
+        #region interface
+        //maybe move this to other place
+        /// <summary>
+        /// bpm method for receiving the BPM value from the bluetooth bike or the simulation
+        /// </summary>
+        /// <param name="bytes">the message</param>
+        public void BPM(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+
+            if (engineConnection.Connected && engineConnection.FollowingRoute)
+            {
+                engineConnection.BikeBPM = bytes[1];
+                engineConnection.UpdateInfoPanel();
+            }
+
+
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// method for receiving the bike message from the bluetooth bike or the simulation
+        /// </summary>
+        /// <param name="bytes">the message</param>
+        public void Bike(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+            switch (bytes[0])
+            {
+                case 0x10:
+                    
+                    engineConnection.BikeSpeed = (bytes[4] | (bytes[5] << 8)) * 0.01f;
+                    break;
+                case 0x19:
+                    engineConnection.BikePower = (bytes[5]) | (bytes[6] & 0b00001111) << 8;
+                    break;
+            }
+            if (engineConnection.Connected && engineConnection.FollowingRoute)
+                engineConnection.UpdateInfoPanel();
+
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        #endregion
+
+        /// <summary>
+        /// wether or not the client stream is connected
+        /// </summary>
+        /// <returns>true if it's connected, false if not</returns>
+        public bool IsConnected()
+        {
+            return this.connected;
+        }
+        /// <summary>
+        /// tries to log in to the server by asking for a username and password
+        /// </summary>
+        private void tryLogin()
+        {
+            //TODO File in lezen
+            Console.WriteLine("enter username");
+            string username = Console.ReadLine();
+            Console.WriteLine("enter password");
+            string password = Console.ReadLine();
+
+            string hashUser = Hashing.Hasher.HashString(username);
+            string hashPassword = Hashing.Hasher.HashString(password);
+
+            byte[] message = DataParser.getJsonMessage(DataParser.GetLoginJson(hashUser, hashPassword));
+
+           
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// sets the handler for the client, so either the bike simulator or the bluetooth bike handler
+        /// </summary>
+        /// <param name="handler"></param>
+        public void setHandler(IHandler handler)
+        {
+            this.handler = handler;
+        }
+    }
+}

Client/Client.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Message\Message.csproj" />
+    <ProjectReference Include="..\ProftaakRH\ProftaakRH.csproj" />
+    <ProjectReference Include="..\RH-Engine\RH-Engine.csproj" />
+  </ItemGroup>
+
+  <Import Project="..\Hashing\Hashing.projitems" Label="Shared" />
+
+</Project>

Client/DataParser.cs

@@ -0,0 +1,206 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using System.Text;
+
+namespace Client
+{
+    public class DataParser
+    {
+        public const string LOGIN = "LOGIN";
+        public const string LOGIN_RESPONSE = "LOGIN RESPONSE";
+        public const string START_SESSION = "START SESSION";
+        public const string STOP_SESSION = "STOP SESSION";
+        public const string SET_RESISTANCE = "SET RESISTANCE";
+        /// <summary>
+        /// makes the json object with LOGIN identifier and username and password
+        /// </summary>
+        /// <param name="mUsername">username</param>
+        /// <param name="mPassword">password</param>
+        /// <returns>json object to ASCII to bytes</returns>
+        public static byte[] GetLoginJson(string mUsername, string mPassword)
+        {
+            dynamic json = new
+            {
+                identifier = LOGIN,
+                data = new
+                {
+                    username = mUsername,
+                    password = mPassword,
+                }
+            };
+
+            return Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json));
+        }
+
+        public static bool GetUsernamePassword(byte[] jsonbytes, out string username, out string password)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(jsonbytes));
+            try
+            {
+                username = json.data.username;
+                password = json.data.password;
+                return true;
+            }
+            catch
+            {
+                username = null;
+                password = null;
+                return false;
+            }
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier, dynamic data)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+                data
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        public static byte[] getLoginResponse(string mStatus)
+        {
+            return getJsonMessage(LOGIN_RESPONSE, new { status = mStatus });
+        }
+
+        public static string getResponseStatus(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.status;
+        }
+
+        /// <summary>
+        /// get the identifier from json
+        /// </summary>
+        /// <param name="bytes">json in ASCII</param>
+        /// <param name="identifier">gets the identifier</param>
+        /// <returns>if it sucseeded</returns>
+        public static bool getJsonIdentifier(byte[] bytes, out string identifier)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            byte messageId = bytes[4];
+
+            if (messageId == 0x01)
+            {
+                dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(bytes.Skip(5).ToArray()));
+                identifier = json.identifier;
+                return true;
+            }
+            else
+            {
+                identifier = "";
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// checks if the de message is raw data according to the protocol
+        /// </summary>
+        /// <param name="bytes">message</param>
+        /// <returns>if message contains raw data</returns>
+        public static bool isRawData(byte[] bytes)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            return bytes[4] == 0x02;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload, messageId and clientId
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="messageId"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        private static byte[] getMessage(byte[] payload, byte messageId)
+        {
+            byte[] res = new byte[payload.Length + 5];
+
+            Array.Copy(BitConverter.GetBytes(payload.Length + 5), 0, res, 0, 4);
+            res[4] = messageId;
+            Array.Copy(payload, 0, res, 5, payload.Length);
+
+            return res;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is raw data
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] GetRawDataMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x02);
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is json
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] getJsonMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x01);
+        }
+
+        public static byte[] getStartSessionJson()
+        {
+            return getJsonMessage(START_SESSION);
+        }
+
+        public static byte[] getStopSessionJson()
+        {
+            return getJsonMessage(STOP_SESSION);
+        }
+
+        public static byte[] getSetResistanceJson(float mResistance)
+        {
+            dynamic data = new
+            {
+                resistance = mResistance
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static byte[] getSetResistanceResponseJson(bool mWorked)
+        {
+            dynamic data = new
+            {
+                worked = mWorked
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static float getResistanceFromJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.resistance;
+        }
+
+        public static bool getResistanceFromResponseJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.worked;
+        }
+
+
+    }
+}

Client/EngineConnection.cs

@@ -0,0 +1,313 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using RH_Engine;
+using System.Net.Sockets;
+
+namespace Client
+{
+    public delegate void HandleSerial(string message);
+    public delegate void HandleNoTunnelId();
+    public delegate void OnSuccessfullConnection();
+
+    public sealed class EngineConnection
+    {
+        private static EngineConnection instance = null;
+        private static readonly object padlock = new object();
+        public HandleNoTunnelId OnNoTunnelId;
+        public OnSuccessfullConnection OnSuccessFullConnection;
+
+
+        private static PC[] PCs = {
+            //new PC("DESKTOP-M2CIH87", "Fabian"),
+            //new PC("T470S", "Shinichi"),
+            //new PC("DESKTOP-DHS478C", "semme"),
+            new PC("HP-ZBOOK-SEM", "Sem")
+            //new PC("DESKTOP-TV73FKO", "Wouter"),
+            //new PC("DESKTOP-SINMKT1", "Ralf van Aert"),
+            //new PC("NA", "Bart")
+        };
+
+        private static ServerResponseReader serverResponseReader;
+        private static string sessionId = string.Empty;
+        private static string tunnelId = string.Empty;
+        private static string cameraId = string.Empty;
+        private static string routeId = string.Empty;
+        private static string panelId = string.Empty;
+        private static string bikeId = string.Empty;
+        private static string headId = string.Empty;
+
+        public float BikeSpeed { get; set; }
+        public float BikePower { get; set; }
+        public float BikeBPM { get; set; }
+        public float BikeResistance { get; set; }
+
+        public bool FollowingRoute = false;
+
+        private static NetworkStream stream;
+
+        private static Dictionary<string, HandleSerial> serialResponses = new Dictionary<string, HandleSerial>();
+        private Command mainCommand;
+
+        public bool Connected = false;
+
+        EngineConnection()
+        {
+            BikeSpeed = 0;
+            BikePower = 0;
+            BikeBPM = 0;
+            BikeResistance = 50;
+        }
+
+        /// <summary>
+        /// Singleton constructor
+        /// </summary>
+        public static EngineConnection INSTANCE
+        {
+            get
+            {
+                lock (padlock)
+                {
+                    if (instance == null)
+                    {
+                        instance = new EngineConnection();
+                    }
+                }
+                return instance;
+            }
+        }
+
+       
+
+        /// <summary>
+        /// connects to the vr engine and initalizes the serverResponseReader
+        /// </summary>
+        public void Connect()
+        {
+            TcpClient client = new TcpClient("145.48.6.10", 6666);
+            stream = client.GetStream();
+            initReader();
+            CreateConnection();
+        }
+
+        /// <summary>
+        /// initializes and starts the reading of the responses from the vr server
+        /// </summary>
+        /// <param name="stream">the networkstream</param>
+        private void initReader()
+        {
+            serverResponseReader = new ServerResponseReader(stream);
+            serverResponseReader.callback = HandleResponse;
+            serverResponseReader.StartRead();
+        }
+
+        #region VR Message traffic
+        /// <summary>
+        /// connects to the server and creates the tunnel
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        public void CreateConnection()
+        {
+
+            WriteTextMessage( "{\r\n\"id\" : \"session/list\",\r\n\"serial\" : \"list\"\r\n}");
+
+            // wait until we have got a sessionId
+            while (sessionId == string.Empty) { }
+
+            string tunnelCreate = "{\"id\" : \"tunnel/create\",	\"data\" :	{\"session\" : \"" + sessionId + "\"}}";
+
+            WriteTextMessage(tunnelCreate);
+
+
+        }
+
+        /// <summary>
+        /// callback method that handles responses from the server
+        /// </summary>
+        /// <param name="message">the response message from the server</param>
+        public void HandleResponse(string message)
+        {
+            string id = JSONParser.GetID(message);
+
+            // because the first messages don't have a serial, we need to check on the id
+            if (id == "session/list")
+            {
+                sessionId = JSONParser.GetSessionID(message, PCs);
+            }
+            else if (id == "tunnel/create")
+            {
+                tunnelId = JSONParser.GetTunnelID(message);
+                Console.WriteLine("set tunnel id to " + tunnelId);
+                if (tunnelId == null)
+                {
+                    Write("could not find a valid tunnel id!");
+                    OnNoTunnelId?.Invoke();
+                    Connected = false;
+                    FollowingRoute = false;
+                    return;
+                } else
+                {
+                    Write("got tunnel id! " + tunnelId);
+                    Connected = true;
+                    OnSuccessFullConnection?.Invoke();
+                }
+            }
+
+            if (message.Contains("serial"))
+            {
+                //Console.WriteLine("GOT MESSAGE WITH SERIAL: " + message + "\n\n\n");
+                string serial = JSONParser.GetSerial(message);
+                //Console.WriteLine("Got serial " + serial);
+                if (serialResponses.ContainsKey(serial)) serialResponses[serial].Invoke(message);
+            }
+        }
+
+        public void initScene()
+        {
+            Write("initializing scene...");
+            mainCommand = new Command(tunnelId);
+
+            // reset the scene
+            WriteTextMessage(mainCommand.ResetScene());
+
+            //Get sceneinfo and set the id's
+            SendMessageAndOnResponse(mainCommand.GetSceneInfoCommand("sceneinfo"), "sceneinfo",
+                (message) =>
+                {
+                    //Console.WriteLine("\r\n\r\n\r\nscene info" + message);
+                    cameraId = JSONParser.GetIdSceneInfoChild(message, "Camera");
+                    string headId = JSONParser.GetIdSceneInfoChild(message, "Head");
+                    string handLeftId = JSONParser.GetIdSceneInfoChild(message, "LeftHand");
+                    string handRightId = JSONParser.GetIdSceneInfoChild(message, "RightHand");
+
+                    //Force(stream, mainCommand.DeleteNode(handLeftId, "deleteHandL"), "deleteHandL", (message) => Console.WriteLine("Left hand deleted"));
+                    //Force(stream, mainCommand.DeleteNode(handRightId, "deleteHandR"), "deleteHandR", (message) => Console.WriteLine("Right hand deleted"));
+                });
+            // add the route and set the route id
+            SendMessageAndOnResponse(mainCommand.RouteCommand("routeID"), "routeID", (message) => routeId = JSONParser.GetResponseUuid(message));
+        }
+
+        internal void StartRouteFollow()
+        {
+            Write("Starting route follow...");
+            FollowingRoute = true;
+
+            SendMessageAndOnResponse(mainCommand.AddBikeModel("bikeID"), "bikeID",
+                (message) =>
+                {
+                    bikeId = JSONParser.GetResponseUuid(message);
+                    SendMessageAndOnResponse(mainCommand.addPanel("panelAdd", bikeId), "panelAdd",
+                        (message) =>
+                        {
+
+                            panelId = JSONParser.getPanelID(message);
+
+                            WriteTextMessage(mainCommand.ColorPanel(panelId));
+                            UpdateInfoPanel();
+
+                            while (cameraId == string.Empty) { }
+                            SetFollowSpeed(5.0f);
+                        });
+                });
+        }
+
+        public void UpdateInfoPanel()
+        {
+            ShowPanel(BikeSpeed, (int)BikeBPM, (int)BikePower, (int)BikeResistance);
+            WriteTextMessage(mainCommand.RouteSpeed(BikeSpeed, bikeId));
+            WriteTextMessage(mainCommand.RouteSpeed(BikeSpeed, cameraId));
+        }
+
+        public void ShowPanel(double bikeSpeed, int bpm, int power, int resistance)
+        {
+            WriteTextMessage(mainCommand.ClearPanel(panelId));
+
+            SendMessageAndOnResponse(mainCommand.showBikespeed(panelId, "bikeSpeed", bikeSpeed), "bikeSpeed",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showHeartrate(panelId, "bpm", bpm), "bpm",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showPower(panelId, "power", power), "power",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showResistance(panelId, "resistance", resistance), "resistance",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+
+            // Check if every text is drawn!
+
+            WriteTextMessage(mainCommand.SwapPanel(panelId));
+        }
+
+        private void SetFollowSpeed(float speed)
+        {
+            WriteTextMessage(mainCommand.RouteFollow(routeId, bikeId, speed, new float[] { 0, -(float)Math.PI / 2f, 0 }, new float[] { 0, 0, 0 }));
+            WriteTextMessage(mainCommand.RouteFollow(routeId, cameraId, speed));
+        }
+
+        #endregion
+
+        #region message send/receive
+
+        /// <summary>
+        /// method that sends the speciefied message with the specified serial, and executes the given action upon receivind a reply from the server with this serial.
+        /// </summary>
+        /// <param name="stream">the networkstream to use</param>
+        /// <param name="message">the message to send</param>
+        /// <param name="serial">the serial to check for</param>
+        /// <param name="action">the code to be executed upon reveiving a reply from the server with the specified serial</param>
+        public void SendMessageAndOnResponse(string message, string serial, HandleSerial action)
+        {
+            if (serialResponses.ContainsKey(serial))
+            {
+                serialResponses[serial] = action;
+            } else
+            {
+                serialResponses.Add(serial, action);
+            }
+            WriteTextMessage(message);
+        }
+
+        /// <summary>
+        /// writes a message to the server
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        /// <param name="message">the message to send</param>
+        public void WriteTextMessage(string message)
+        {
+            byte[] msg = Encoding.ASCII.GetBytes(message);
+            byte[] res = new byte[msg.Length + 4];
+
+            Array.Copy(BitConverter.GetBytes(msg.Length), 0, res, 0, 4);
+            Array.Copy(msg, 0, res, 4, msg.Length);
+
+            stream.Write(res);
+
+            //Write("sent message " + message);
+        }
+
+        #endregion
+
+        public void Stop()
+        {
+            serverResponseReader.Stop();
+            
+        }
+        public void Write(string msg)
+        {
+            Console.WriteLine( "[ENGINECONNECT] " + msg);
+        }
+
+    }
+
+
+}

Client/Program.cs

@@ -0,0 +1,44 @@
+using System;
+using Hardware;
+using Hardware.Simulators;
+using RH_Engine;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading;
+
+namespace Client
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("// Connecting... //");
+            //connect fiets?
+
+            Thread.Sleep(20000);
+            Client client = new Client();
+
+
+            while (!client.IsConnected())
+            {
+
+            }
+            //BLEHandler bLEHandler = new BLEHandler(client);
+
+            //bLEHandler.Connect();
+
+            //client.setHandler(bLEHandler);
+
+
+            BikeSimulator bikeSimulator = new BikeSimulator(client);
+
+            bikeSimulator.StartSimulation();
+
+            client.setHandler(bikeSimulator);
+
+            while (true)
+            {
+            }
+        }
+    }
+}

ClientApp/App.xaml

@@ -0,0 +1,18 @@
+<Application x:Class="ClientApp.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:ClientApp"
+             xmlns:viewModels="clr-namespace:ClientApp.ViewModels"
+               xmlns:views="clr-namespace:ClientApp.Views"
+             StartupUri="Views/MainWindow.xaml">
+    <Application.Resources>
+        <DataTemplate DataType="{x:Type viewModels:MainViewModel}">
+            <views:MainView />
+            <!-- This is a UserControl -->
+        </DataTemplate>
+        <DataTemplate DataType="{x:Type viewModels:LoginViewModel}">
+            <views:LoginView />
+            <!-- This is a UserControl -->
+        </DataTemplate>
+    </Application.Resources>
+</Application>

ClientApp/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ClientApp
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

ClientApp/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

ClientApp/ClientApp.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AsyncAwaitBestPractices.MVVM" Version="4.3.0" />
+    <PackageReference Include="MvvmLightLibsStd10" Version="5.4.1.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="PropertyChanged.Fody" Version="3.2.9" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ProftaakRH\ProftaakRH.csproj" />
+    <ProjectReference Include="..\RH-Engine\RH-Engine.csproj" />
+  </ItemGroup>
+
+  <Import Project="..\Hashing\Hashing.projitems" Label="Shared" />
+
+</Project>

ClientApp/FodyWeavers.xml

@@ -0,0 +1,3 @@
+<Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
+  <PropertyChanged />
+</Weavers>

ClientApp/FodyWeavers.xsd

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <!-- This file was generated by Fody. Manual changes to this file will be lost when your project is rebuilt. -->
+  <xs:element name="Weavers">
+    <xs:complexType>
+      <xs:all>
+        <xs:element name="PropertyChanged" minOccurs="0" maxOccurs="1">
+          <xs:complexType>
+            <xs:attribute name="InjectOnPropertyNameChanged" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if the On_PropertyName_Changed feature is enabled.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="TriggerDependentProperties" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if the Dependent properties feature is enabled.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="EnableIsChangedProperty" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if the IsChanged property feature is enabled.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="EventInvokerNames" type="xs:string">
+              <xs:annotation>
+                <xs:documentation>Used to change the name of the method that fires the notify event. This is a string that accepts multiple values in a comma separated form.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="CheckForEquality" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should be inserted. If false, equality checking will be disabled for the project.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="CheckForEqualityUsingBaseEquals" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should use the Equals method resolved from the base class.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="UseStaticEqualsFromBase" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should use the static Equals method resolved from the base class.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="SuppressWarnings" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to turn off build warnings from this weaver.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="SuppressOnPropertyNameChangedWarning" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to turn off build warnings about mismatched On_PropertyName_Changed methods.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+          </xs:complexType>
+        </xs:element>
+      </xs:all>
+      <xs:attribute name="VerifyAssembly" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'true' to run assembly verification (PEVerify) on the target assembly after all weavers have been executed.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="VerifyIgnoreCodes" type="xs:string">
+        <xs:annotation>
+          <xs:documentation>A comma-separated list of error codes that can be safely ignored in assembly verification.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="GenerateXsd" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'false' to turn off automatic generation of the XML Schema file.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

ClientApp/Models/Info.cs

@@ -0,0 +1,14 @@
+using ClientApp.Utils;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ClientApp.Models
+{
+    class Info : ObservableObject
+    {
+        public bool ConnectedToServer { get; set; }
+        public bool ConnectedToVREngine { get; set; }
+        public bool DoctorConnected { get; set; }
+    }
+}

ClientApp/Utils/Client.cs

@@ -0,0 +1,291 @@
+using System;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using ClientApp.ViewModels;
+using ProftaakRH;
+
+namespace ClientApp.Utils
+{
+    public class Client : IDataReceiver
+    {
+        private TcpClient client;
+        private NetworkStream stream;
+        private byte[] buffer = new byte[1024];
+        private bool connected;
+        private byte[] totalBuffer = new byte[1024];
+        private int totalBufferReceived = 0;
+        private EngineConnection engineConnection;
+        private bool sessionRunning = false;
+        private IHandler handler = null;
+        private LoginViewModel LoginViewModel;
+
+
+        public Client() : this("localhost", 5555)
+        {
+
+        }
+
+        public Client(string adress, int port)
+        {
+            this.client = new TcpClient();
+            this.connected = false;
+            client.BeginConnect(adress, port, new AsyncCallback(OnConnect), null);
+        }
+
+        /// <summary>
+        /// initializes the VR engine and sets the callbacks
+        /// </summary>
+        private void initEngine()
+        {
+            engineConnection = EngineConnection.INSTANCE;
+            engineConnection.OnNoTunnelId = retryEngineConnection;
+            engineConnection.OnSuccessFullConnection = engineConnected;
+            if (!engineConnection.Connected) engineConnection.Connect();
+        }
+
+        /// <summary>
+        /// retries to connect to the VR engine if no tunnel id was found
+        /// </summary>
+        private void retryEngineConnection()
+        {
+            Console.WriteLine("-- Could not connect to the VR engine. Please make sure you are running the simulation!");
+            Console.WriteLine("-- Press ENTER to retry connecting to the VR engine.");
+            Console.WriteLine("-- Press 'q' and then ENTER to not connect to the VR engine");
+            string input = Console.ReadLine();
+            if (input == string.Empty) engineConnection.CreateConnection();
+            else
+            {
+                Console.WriteLine("Skipping connecting to VR engine...");
+                engineConnection.Stop();
+            }
+
+        }
+
+        private void engineConnected()
+        {
+            Console.WriteLine("successfully connected to VR engine");
+            engineConnection.initScene();
+            if (engineConnection.Connected && sessionRunning && !engineConnection.FollowingRoute) engineConnection.StartRouteFollow();
+        }
+
+        /// <summary>
+        /// callback method for when the TCP client is connected
+        /// </summary>
+        /// <param name="ar">the result of the async read</param>
+        private void OnConnect(IAsyncResult ar)
+        {
+            this.client.EndConnect(ar);
+            Console.WriteLine("TCP client Verbonden!");
+
+
+            this.stream = this.client.GetStream();
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+        }
+
+        /// <summary>
+        /// callback method for when there is a message read
+        /// </summary>
+        /// <param name="ar">the result of the async read</param>
+        private void OnRead(IAsyncResult ar)
+        {
+            int receivedBytes = this.stream.EndRead(ar);
+
+            if (totalBufferReceived + receivedBytes > 1024)
+            {
+                throw new OutOfMemoryException("buffer too small");
+            }
+            Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, receivedBytes);
+            totalBufferReceived += receivedBytes;
+
+            int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            while (totalBufferReceived >= expectedMessageLength)
+            {
+                //volledig packet binnen
+                byte[] messageBytes = new byte[expectedMessageLength];
+                Array.Copy(totalBuffer, 0, messageBytes, 0, expectedMessageLength);
+
+
+                byte[] payloadbytes = new byte[BitConverter.ToInt32(messageBytes, 0) - 5];
+
+                Array.Copy(messageBytes, 5, payloadbytes, 0, payloadbytes.Length);
+
+                string identifier;
+                bool isJson = DataParser.getJsonIdentifier(messageBytes, out identifier);
+                if (isJson)
+                {
+                    switch (identifier)
+                    {
+                        case DataParser.LOGIN_RESPONSE:
+                            string responseStatus = DataParser.getResponseStatus(payloadbytes);
+                            if (responseStatus == "OK")
+                            {
+                                Console.WriteLine("Username and password correct!");
+                                this.LoginViewModel.setLoginStatus(true);
+                                this.connected = true;
+                                initEngine();
+                            }
+                            else
+                            {
+                                Console.WriteLine($"login failed \"{responseStatus}\"");
+                            }
+                            break;
+                        case DataParser.START_SESSION:
+                            Console.WriteLine("Session started!");
+                            this.sessionRunning = true;
+                            if (engineConnection.Connected && !engineConnection.FollowingRoute) engineConnection.StartRouteFollow();
+                            sendMessage(DataParser.getStartSessionJson());
+                            break;
+                        case DataParser.STOP_SESSION:
+                            Console.WriteLine("Stop session identifier");
+                            this.sessionRunning = false;
+                            sendMessage(DataParser.getStopSessionJson());
+                            break;
+                        case DataParser.SET_RESISTANCE:
+                            Console.WriteLine("Set resistance identifier");
+                            if (this.handler == null)
+                            {
+                                Console.WriteLine("handler is null");
+                                sendMessage(DataParser.getSetResistanceResponseJson(false));
+                            }
+                            else
+                            {
+                                this.handler.setResistance(DataParser.getResistanceFromJson(payloadbytes));
+                                sendMessage(DataParser.getSetResistanceResponseJson(true));
+                            }
+                            break;
+                        default:
+                            Console.WriteLine($"Received json with identifier {identifier}:\n{Encoding.ASCII.GetString(payloadbytes)}");
+                            break;
+                    }
+                }
+                else if (DataParser.isRawData(messageBytes))
+                {
+                    Console.WriteLine($"Received data: {BitConverter.ToString(payloadbytes)}");
+                }
+
+                totalBufferReceived -= expectedMessageLength;
+                expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            }
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+
+        }
+
+        /// <summary>
+        /// starts sending a message to the server
+        /// </summary>
+        /// <param name="message">the message to send</param>
+        private void sendMessage(byte[] message)
+        {
+            stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// callback method for when a message is fully written to the server
+        /// </summary>
+        /// <param name="ar">the async result representing the asynchronous call</param>
+        private void OnWrite(IAsyncResult ar)
+        {
+            this.stream.EndWrite(ar);
+        }
+
+        #region interface
+        //maybe move this to other place
+        /// <summary>
+        /// bpm method for receiving the BPM value from the bluetooth bike or the simulation
+        /// </summary>
+        /// <param name="bytes">the message</param>
+        public void BPM(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+
+            if (engineConnection.Connected && engineConnection.FollowingRoute)
+            {
+                engineConnection.BikeBPM = bytes[1];
+                engineConnection.UpdateInfoPanel();
+            }
+
+
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// method for receiving the bike message from the bluetooth bike or the simulation
+        /// </summary>
+        /// <param name="bytes">the message</param>
+        public void Bike(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+            switch (bytes[0])
+            {
+                case 0x10:
+
+                    engineConnection.BikeSpeed = (bytes[4] | (bytes[5] << 8)) * 0.01f;
+                    break;
+                case 0x19:
+                    engineConnection.BikePower = (bytes[5]) | (bytes[6] & 0b00001111) << 8;
+                    break;
+            }
+            if (engineConnection.Connected && engineConnection.FollowingRoute)
+                engineConnection.UpdateInfoPanel();
+
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        #endregion
+
+        /// <summary>
+        /// wether or not the client stream is connected
+        /// </summary>
+        /// <returns>true if it's connected, false if not</returns>
+        public bool IsConnected()
+        {
+            return this.connected;
+        }
+        /// <summary>
+        /// tries to log in to the server by asking for a username and password
+        /// </summary>
+        public void tryLogin(string username, string password)
+        {
+            string hashUser = Hashing.Hasher.HashString(username);
+            string hashPassword = Hashing.Hasher.HashString(password);
+
+            byte[] message = DataParser.getJsonMessage(DataParser.GetLoginJson(hashUser, hashPassword));
+
+
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        /// <summary>
+        /// sets the handler for the client, so either the bike simulator or the bluetooth bike handler
+        /// </summary>
+        /// <param name="handler"></param>
+        public void SetHandler(IHandler handler)
+        {
+            this.handler = handler;
+        }
+
+        internal void SetLoginViewModel(LoginViewModel loginViewModel)
+        {
+            this.LoginViewModel = loginViewModel;
+        }
+    }
+}

ClientApp/Utils/DataParser.cs

@@ -0,0 +1,206 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using System.Text;
+
+namespace ClientApp.Utils
+{
+    public class DataParser
+    {
+        public const string LOGIN = "LOGIN";
+        public const string LOGIN_RESPONSE = "LOGIN RESPONSE";
+        public const string START_SESSION = "START SESSION";
+        public const string STOP_SESSION = "STOP SESSION";
+        public const string SET_RESISTANCE = "SET RESISTANCE";
+        /// <summary>
+        /// makes the json object with LOGIN identifier and username and password
+        /// </summary>
+        /// <param name="mUsername">username</param>
+        /// <param name="mPassword">password</param>
+        /// <returns>json object to ASCII to bytes</returns>
+        public static byte[] GetLoginJson(string mUsername, string mPassword)
+        {
+            dynamic json = new
+            {
+                identifier = LOGIN,
+                data = new
+                {
+                    username = mUsername,
+                    password = mPassword,
+                }
+            };
+
+            return Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json));
+        }
+
+        public static bool GetUsernamePassword(byte[] jsonbytes, out string username, out string password)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(jsonbytes));
+            try
+            {
+                username = json.data.username;
+                password = json.data.password;
+                return true;
+            }
+            catch
+            {
+                username = null;
+                password = null;
+                return false;
+            }
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier, dynamic data)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+                data
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        public static byte[] getLoginResponse(string mStatus)
+        {
+            return getJsonMessage(LOGIN_RESPONSE, new { status = mStatus });
+        }
+
+        public static string getResponseStatus(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.status;
+        }
+
+        /// <summary>
+        /// get the identifier from json
+        /// </summary>
+        /// <param name="bytes">json in ASCII</param>
+        /// <param name="identifier">gets the identifier</param>
+        /// <returns>if it sucseeded</returns>
+        public static bool getJsonIdentifier(byte[] bytes, out string identifier)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            byte messageId = bytes[4];
+
+            if (messageId == 0x01)
+            {
+                dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(bytes.Skip(5).ToArray()));
+                identifier = json.identifier;
+                return true;
+            }
+            else
+            {
+                identifier = "";
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// checks if the de message is raw data according to the protocol
+        /// </summary>
+        /// <param name="bytes">message</param>
+        /// <returns>if message contains raw data</returns>
+        public static bool isRawData(byte[] bytes)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            return bytes[4] == 0x02;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload, messageId and clientId
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="messageId"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        private static byte[] getMessage(byte[] payload, byte messageId)
+        {
+            byte[] res = new byte[payload.Length + 5];
+
+            Array.Copy(BitConverter.GetBytes(payload.Length + 5), 0, res, 0, 4);
+            res[4] = messageId;
+            Array.Copy(payload, 0, res, 5, payload.Length);
+
+            return res;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is raw data
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] GetRawDataMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x02);
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is json
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] getJsonMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x01);
+        }
+
+        public static byte[] getStartSessionJson()
+        {
+            return getJsonMessage(START_SESSION);
+        }
+
+        public static byte[] getStopSessionJson()
+        {
+            return getJsonMessage(STOP_SESSION);
+        }
+
+        public static byte[] getSetResistanceJson(float mResistance)
+        {
+            dynamic data = new
+            {
+                resistance = mResistance
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static byte[] getSetResistanceResponseJson(bool mWorked)
+        {
+            dynamic data = new
+            {
+                worked = mWorked
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static float getResistanceFromJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.resistance;
+        }
+
+        public static bool getResistanceFromResponseJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.worked;
+        }
+
+
+    }
+}

ClientApp/Utils/EngineConnection.cs

@@ -0,0 +1,315 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using RH_Engine;
+using System.Net.Sockets;
+
+namespace ClientApp.Utils
+{
+    public delegate void HandleSerial(string message);
+    public delegate void HandleNoTunnelId();
+    public delegate void OnSuccessfullConnection();
+
+    public sealed class EngineConnection
+    {
+        private static EngineConnection instance = null;
+        private static readonly object padlock = new object();
+        public HandleNoTunnelId OnNoTunnelId;
+        public OnSuccessfullConnection OnSuccessFullConnection;
+
+
+        private static PC[] PCs = {
+            //new PC("DESKTOP-M2CIH87", "Fabian"),
+            //new PC("T470S", "Shinichi"),
+            //new PC("DESKTOP-DHS478C", "semme"),
+            new PC("HP-ZBOOK-SEM", "Sem")
+            //new PC("DESKTOP-TV73FKO", "Wouter"),
+            //new PC("DESKTOP-SINMKT1", "Ralf van Aert"),
+            //new PC("NA", "Bart")
+        };
+
+        private static ServerResponseReader serverResponseReader;
+        private static string sessionId = string.Empty;
+        private static string tunnelId = string.Empty;
+        private static string cameraId = string.Empty;
+        private static string routeId = string.Empty;
+        private static string panelId = string.Empty;
+        private static string bikeId = string.Empty;
+        private static string headId = string.Empty;
+
+        public float BikeSpeed { get; set; }
+        public float BikePower { get; set; }
+        public float BikeBPM { get; set; }
+        public float BikeResistance { get; set; }
+
+        public bool FollowingRoute = false;
+
+        private static NetworkStream stream;
+
+        private static Dictionary<string, HandleSerial> serialResponses = new Dictionary<string, HandleSerial>();
+        private Command mainCommand;
+
+        public bool Connected = false;
+
+        EngineConnection()
+        {
+            BikeSpeed = 0;
+            BikePower = 0;
+            BikeBPM = 0;
+            BikeResistance = 50;
+        }
+
+        /// <summary>
+        /// Singleton constructor
+        /// </summary>
+        public static EngineConnection INSTANCE
+        {
+            get
+            {
+                lock (padlock)
+                {
+                    if (instance == null)
+                    {
+                        instance = new EngineConnection();
+                    }
+                }
+                return instance;
+            }
+        }
+
+
+
+        /// <summary>
+        /// connects to the vr engine and initalizes the serverResponseReader
+        /// </summary>
+        public void Connect()
+        {
+            TcpClient client = new TcpClient("145.48.6.10", 6666);
+            stream = client.GetStream();
+            initReader();
+            CreateConnection();
+        }
+
+        /// <summary>
+        /// initializes and starts the reading of the responses from the vr server
+        /// </summary>
+        /// <param name="stream">the networkstream</param>
+        private void initReader()
+        {
+            serverResponseReader = new ServerResponseReader(stream);
+            serverResponseReader.callback = HandleResponse;
+            serverResponseReader.StartRead();
+        }
+
+        #region VR Message traffic
+        /// <summary>
+        /// connects to the server and creates the tunnel
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        public void CreateConnection()
+        {
+
+            WriteTextMessage("{\r\n\"id\" : \"session/list\",\r\n\"serial\" : \"list\"\r\n}");
+
+            // wait until we have got a sessionId
+            while (sessionId == string.Empty) { }
+
+            string tunnelCreate = "{\"id\" : \"tunnel/create\",	\"data\" :	{\"session\" : \"" + sessionId + "\"}}";
+
+            WriteTextMessage(tunnelCreate);
+
+
+        }
+
+        /// <summary>
+        /// callback method that handles responses from the server
+        /// </summary>
+        /// <param name="message">the response message from the server</param>
+        public void HandleResponse(string message)
+        {
+            string id = JSONParser.GetID(message);
+
+            // because the first messages don't have a serial, we need to check on the id
+            if (id == "session/list")
+            {
+                sessionId = JSONParser.GetSessionID(message, PCs);
+            }
+            else if (id == "tunnel/create")
+            {
+                tunnelId = JSONParser.GetTunnelID(message);
+                Console.WriteLine("set tunnel id to " + tunnelId);
+                if (tunnelId == null)
+                {
+                    Write("could not find a valid tunnel id!");
+                    OnNoTunnelId?.Invoke();
+                    Connected = false;
+                    FollowingRoute = false;
+                    return;
+                }
+                else
+                {
+                    Write("got tunnel id! " + tunnelId);
+                    Connected = true;
+                    OnSuccessFullConnection?.Invoke();
+                }
+            }
+
+            if (message.Contains("serial"))
+            {
+                //Console.WriteLine("GOT MESSAGE WITH SERIAL: " + message + "\n\n\n");
+                string serial = JSONParser.GetSerial(message);
+                //Console.WriteLine("Got serial " + serial);
+                if (serialResponses.ContainsKey(serial)) serialResponses[serial].Invoke(message);
+            }
+        }
+
+        public void initScene()
+        {
+            Write("initializing scene...");
+            mainCommand = new Command(tunnelId);
+
+            // reset the scene
+            WriteTextMessage(mainCommand.ResetScene());
+
+            //Get sceneinfo and set the id's
+            SendMessageAndOnResponse(mainCommand.GetSceneInfoCommand("sceneinfo"), "sceneinfo",
+                (message) =>
+                {
+                    //Console.WriteLine("\r\n\r\n\r\nscene info" + message);
+                    cameraId = JSONParser.GetIdSceneInfoChild(message, "Camera");
+                    string headId = JSONParser.GetIdSceneInfoChild(message, "Head");
+                    string handLeftId = JSONParser.GetIdSceneInfoChild(message, "LeftHand");
+                    string handRightId = JSONParser.GetIdSceneInfoChild(message, "RightHand");
+
+                    //Force(stream, mainCommand.DeleteNode(handLeftId, "deleteHandL"), "deleteHandL", (message) => Console.WriteLine("Left hand deleted"));
+                    //Force(stream, mainCommand.DeleteNode(handRightId, "deleteHandR"), "deleteHandR", (message) => Console.WriteLine("Right hand deleted"));
+                });
+            // add the route and set the route id
+            SendMessageAndOnResponse(mainCommand.RouteCommand("routeID"), "routeID", (message) => routeId = JSONParser.GetResponseUuid(message));
+        }
+
+        internal void StartRouteFollow()
+        {
+            Write("Starting route follow...");
+            FollowingRoute = true;
+
+            SendMessageAndOnResponse(mainCommand.AddBikeModel("bikeID"), "bikeID",
+                (message) =>
+                {
+                    bikeId = JSONParser.GetResponseUuid(message);
+                    SendMessageAndOnResponse(mainCommand.addPanel("panelAdd", bikeId), "panelAdd",
+                        (message) =>
+                        {
+
+                            panelId = JSONParser.getPanelID(message);
+
+                            WriteTextMessage(mainCommand.ColorPanel(panelId));
+                            UpdateInfoPanel();
+
+                            while (cameraId == string.Empty) { }
+                            SetFollowSpeed(5.0f);
+                        });
+                });
+        }
+
+        public void UpdateInfoPanel()
+        {
+            ShowPanel(BikeSpeed, (int)BikeBPM, (int)BikePower, (int)BikeResistance);
+            WriteTextMessage(mainCommand.RouteSpeed(BikeSpeed, bikeId));
+            WriteTextMessage(mainCommand.RouteSpeed(BikeSpeed, cameraId));
+        }
+
+        public void ShowPanel(double bikeSpeed, int bpm, int power, int resistance)
+        {
+            WriteTextMessage(mainCommand.ClearPanel(panelId));
+
+            SendMessageAndOnResponse(mainCommand.showBikespeed(panelId, "bikeSpeed", bikeSpeed), "bikeSpeed",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showHeartrate(panelId, "bpm", bpm), "bpm",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showPower(panelId, "power", power), "power",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(mainCommand.showResistance(panelId, "resistance", resistance), "resistance",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+
+            // Check if every text is drawn!
+
+            WriteTextMessage(mainCommand.SwapPanel(panelId));
+        }
+
+        private void SetFollowSpeed(float speed)
+        {
+            WriteTextMessage(mainCommand.RouteFollow(routeId, bikeId, speed, new float[] { 0, -(float)Math.PI / 2f, 0 }, new float[] { 0, 0, 0 }));
+            WriteTextMessage(mainCommand.RouteFollow(routeId, cameraId, speed));
+        }
+
+        #endregion
+
+        #region message send/receive
+
+        /// <summary>
+        /// method that sends the speciefied message with the specified serial, and executes the given action upon receivind a reply from the server with this serial.
+        /// </summary>
+        /// <param name="stream">the networkstream to use</param>
+        /// <param name="message">the message to send</param>
+        /// <param name="serial">the serial to check for</param>
+        /// <param name="action">the code to be executed upon reveiving a reply from the server with the specified serial</param>
+        public void SendMessageAndOnResponse(string message, string serial, HandleSerial action)
+        {
+            if (serialResponses.ContainsKey(serial))
+            {
+                serialResponses[serial] = action;
+            }
+            else
+            {
+                serialResponses.Add(serial, action);
+            }
+            WriteTextMessage(message);
+        }
+
+        /// <summary>
+        /// writes a message to the server
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        /// <param name="message">the message to send</param>
+        public void WriteTextMessage(string message)
+        {
+            byte[] msg = Encoding.ASCII.GetBytes(message);
+            byte[] res = new byte[msg.Length + 4];
+
+            Array.Copy(BitConverter.GetBytes(msg.Length), 0, res, 0, 4);
+            Array.Copy(msg, 0, res, 4, msg.Length);
+
+            stream.Write(res);
+
+            //Write("sent message " + message);
+        }
+
+        #endregion
+
+        public void Stop()
+        {
+            serverResponseReader.Stop();
+
+        }
+        public void Write(string msg)
+        {
+            Console.WriteLine("[ENGINECONNECT] " + msg);
+        }
+
+    }
+
+
+}

ClientApp/Utils/ObservableObject.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text;
+
+namespace ClientApp.Utils
+{
+    public abstract class ObservableObject : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+    }
+}

ClientApp/Utils/Program.cs

@@ -0,0 +1,42 @@
+using System;
+using Hardware;
+using Hardware.Simulators;
+using RH_Engine;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace ClientApp.Utils
+{
+    class Program
+    {
+        //static void Main(string[] args)
+        //{
+        //    Console.WriteLine("// Connecting... //");
+        //    //connect fiets?
+
+        //    Client client = new Client();
+
+
+        //    while (!client.IsConnected())
+        //    {
+
+        //    }
+        //    //BLEHandler bLEHandler = new BLEHandler(client);
+
+        //    //bLEHandler.Connect();
+
+        //    //client.setHandler(bLEHandler);
+
+
+        //    BikeSimulator bikeSimulator = new BikeSimulator(client);
+
+        //    bikeSimulator.StartSimulation();
+
+        //    client.setHandler(bikeSimulator);
+
+        //    while (true)
+        //    {
+        //    }
+        //}
+    }
+}

ClientApp/ViewModels/LoginViewModel.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Controls;
+using System.Windows.Input;
+using ClientApp.Utils;
+using GalaSoft.MvvmLight.Command;
+
+namespace ClientApp.ViewModels
+{
+    class LoginViewModel : ObservableObject
+    {
+        public string Username { get; set; }
+        private MainWindowViewModel mainWindowViewModel;
+        public LoginViewModel(MainWindowViewModel mainWindowViewModel)
+        {
+            this.mainWindowViewModel = mainWindowViewModel;
+            LoginCommand = new RelayCommand<object>((parameter) =>
+            {
+                //TODO send username and password to server
+                this.mainWindowViewModel.client.tryLogin(Username, ((PasswordBox)parameter).Password);
+            });
+        }
+
+        public ICommand LoginCommand { get; set; }
+
+        internal void setLoginStatus(bool status)
+        {
+            this.mainWindowViewModel.InfoModel.ConnectedToServer = true;
+            if (status)
+            {
+                this.mainWindowViewModel.SelectedViewModel = new MainViewModel(mainWindowViewModel);
+            }
+        }
+    }
+}

ClientApp/ViewModels/MainViewModel.cs

@@ -0,0 +1,30 @@
+using ClientApp.Models;
+using ClientApp.Utils;
+using GalaSoft.MvvmLight.Command;
+using System.Windows.Input;
+
+namespace ClientApp.ViewModels
+{
+    class MainViewModel : ObservableObject
+    {
+        public ICommand RetryServerCommand { get; set; }
+        public ICommand RetryVREngineCommand { get; set; }
+        public MainWindowViewModel MainWindowViewModel;
+
+
+        public MainViewModel(MainWindowViewModel mainWindowViewModel)
+        {
+            this.MainWindowViewModel = mainWindowViewModel;
+            this.RetryServerCommand = new RelayCommand(() =>
+            {
+                //try connect server
+                this.MainWindowViewModel.InfoModel.ConnectedToServer = true;
+            });
+            this.RetryVREngineCommand = new RelayCommand(() =>
+            {
+                //try connect vr-engine
+                this.MainWindowViewModel.InfoModel.ConnectedToVREngine = true;
+            });
+        }
+    }
+}

ClientApp/ViewModels/MainWindowViewModel.cs

@@ -0,0 +1,26 @@
+using ClientApp.Models;
+using ClientApp.Utils;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ClientApp.ViewModels
+{
+    class MainWindowViewModel : ObservableObject
+    {
+        public Info InfoModel { get; set; }
+
+        public ObservableObject SelectedViewModel { get; set; }
+        public Client client { get; }
+
+        public MainWindowViewModel(Client client)
+        {
+            this.InfoModel = new Info();
+            this.client = client;
+            LoginViewModel loginViewModel = new LoginViewModel(this);
+            SelectedViewModel = loginViewModel;
+            this.client.SetLoginViewModel(loginViewModel);
+        }
+
+    }
+}

ClientApp/Views/LoginView.xaml

@@ -0,0 +1,18 @@
+<UserControl x:Class="ClientApp.Views.LoginView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:ClientApp.Views"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800">
+    <DockPanel>
+        <StackPanel VerticalAlignment="Center" Width="auto">
+            <Label Content="Username" HorizontalContentAlignment="Center" />
+            <TextBox x:Name="Username" Text="{Binding Username}" TextWrapping="Wrap" Width="120"/>
+            <Label Content="Password" HorizontalContentAlignment="Center"/>
+            <PasswordBox x:Name="Password" Width="120"/>
+            <Button x:Name="Login" Content="Login" Command="{Binding LoginCommand}" CommandParameter="{Binding ElementName=Password}" Margin="0,20,0,0" Width="120"/>
+        </StackPanel>
+    </DockPanel>
+</UserControl>

ClientApp/Views/LoginView.xaml.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace ClientApp.Views
+{
+    /// <summary>
+    /// Interaction logic for LoginView.xaml
+    /// </summary>
+    public partial class LoginView : UserControl
+    {
+        public LoginView()
+        {
+            InitializeComponent();
+        }
+    }
+}

ClientApp/Views/MainView.xaml

@@ -0,0 +1,52 @@
+<UserControl x:Class="ClientApp.Views.MainView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:ClientApp.Views"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800">
+    <DockPanel>
+        <Grid>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+
+            <Grid.RowDefinitions>
+                <RowDefinition/>
+                <RowDefinition/>
+            </Grid.RowDefinitions>
+
+            <StackPanel Grid.Column="0" Grid.Row="0" Orientation="Horizontal" Margin="10">
+                <Label  Content="Connected to server:"/>
+                <Label  Content="{Binding Path=MainWindowViewModel.InfoModel.ConnectedToServer}"/>
+            </StackPanel>
+
+            <StackPanel Grid.Column="1" Grid.Row="0" Orientation="Horizontal" Margin="10">
+                <Label Content="Connected to VR-Engine:"/>
+                <Label Content="{Binding Path=MainWindowViewModel.InfoModel.ConnectedToVREngine}"/>
+            </StackPanel>
+
+            <StackPanel Grid.Column="2" Grid.Row="0" Orientation="Horizontal" Margin="10">
+                <Label Content="Doctor connected:"/>
+                <Label  Content="{Binding Path=MainWindowViewModel.InfoModel.DoctorConnected}"/>
+            </StackPanel>
+
+            <Button Grid.Column="0" Grid.Row="1"  Command="{Binding RetryServerCommand}" Width="50" Height="20">
+                <Button.Content>
+                    <TextBlock TextWrapping="Wrap" Text="retry"/>
+                </Button.Content>
+            </Button>
+
+            <Button Grid.Column="1" Grid.Row="1"  Command="{Binding RetryVREngineCommand}" Width="50" Height="20">
+                <Button.Content>
+                    <TextBlock TextWrapping="Wrap" Text="retry"/>
+                </Button.Content>
+            </Button>
+
+        </Grid>
+
+    </DockPanel>
+</UserControl>

ClientApp/Views/MainView.xaml.cs

@@ -0,0 +1,27 @@
+using ClientApp.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace ClientApp.Views
+{
+    /// <summary>
+    /// Interaction logic for MainView.xaml
+    /// </summary>
+    public partial class MainView : UserControl
+    {
+        public MainView()
+        {
+            InitializeComponent();
+        }
+    }
+}

ClientApp/Views/MainWindow.xaml

@@ -0,0 +1,16 @@
+<Window x:Class="ClientApp.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:ClientApp"
+        xmlns:views="clr-namespace:ClientApp.Views"
+        mc:Ignorable="d"
+        Title="Whaazzzzuuuuuuuup" Height="450" Width="800">
+
+
+    <DockPanel>
+        <Label Content="gemaakt door: mensen" DockPanel.Dock="Bottom" HorizontalAlignment="Right" VerticalAlignment="Bottom" FontStyle="Italic" Foreground="Gray"/>
+        <ContentControl  HorizontalAlignment="Center" VerticalAlignment="Center" Content="{Binding SelectedViewModel}" />
+    </DockPanel>
+</Window>

ClientApp/Views/MainWindow.xaml.cs

@@ -0,0 +1,54 @@
+using ClientApp.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using ClientApp.Utils;
+using Hardware.Simulators;
+using System.Threading;
+
+namespace ClientApp
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            Client client = new Client();
+
+
+            InitializeComponent();
+            DataContext = new MainWindowViewModel(client);
+
+
+            //BLEHandler bLEHandler = new BLEHandler(client);
+
+            //bLEHandler.Connect();
+
+            //client.setHandler(bLEHandler);
+
+
+            BikeSimulator bikeSimulator = new BikeSimulator(client);
+
+            Thread newThread = new Thread(new ThreadStart(bikeSimulator.StartSimulation));
+            newThread.Start();
+
+
+            client.SetHandler(bikeSimulator);
+
+
+        }
+    }
+}

DokterApp/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="DokterApp.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:DokterApp"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

DokterApp/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace DokterApp
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

DokterApp/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

DokterApp/Client.cs

@@ -0,0 +1,196 @@
+using System;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+using ProftaakRH;
+
+namespace DokterApp
+{
+    public class Client : IDataReceiver
+    {
+        private TcpClient client;
+        private NetworkStream stream;
+        private byte[] buffer = new byte[1024];
+        private bool connected;
+        private byte[] totalBuffer = new byte[1024];
+        private int totalBufferReceived = 0;
+        private bool sessionRunning = false;
+        private IHandler handler = null;
+        private string username;
+        private string password;
+        private Del callback;
+
+        
+        public Client(string adress, int port, string username, string password, Del callback)
+        {
+            this.callback = callback;
+            this.username = username;
+            this.password = password;
+            this.client = new TcpClient();
+            this.connected = false;
+            client.BeginConnect(adress, port, new AsyncCallback(OnConnect), null);
+        }
+
+       
+
+       
+
+        private void OnConnect(IAsyncResult ar)
+        {
+            this.client.EndConnect(ar);
+            Console.WriteLine("TCP client Verbonden!");
+
+            this.stream = this.client.GetStream();
+
+            tryLogin();
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+        }
+
+        private void OnRead(IAsyncResult ar)
+        {
+            int receivedBytes = this.stream.EndRead(ar);
+
+            if (totalBufferReceived + receivedBytes > 1024)
+            {
+                throw new OutOfMemoryException("buffer too small");
+            }
+            Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, receivedBytes);
+            totalBufferReceived += receivedBytes;
+
+            int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            while (totalBufferReceived >= expectedMessageLength)
+            {
+                //volledig packet binnen
+                byte[] messageBytes = new byte[expectedMessageLength];
+                Array.Copy(totalBuffer, 0, messageBytes, 0, expectedMessageLength);
+
+
+                byte[] payloadbytes = new byte[BitConverter.ToInt32(messageBytes, 0) - 5];
+
+                Array.Copy(messageBytes, 5, payloadbytes, 0, payloadbytes.Length);
+
+                string identifier;
+                bool isJson = DataParser.getJsonIdentifier(messageBytes, out identifier);
+                if (isJson)
+                {
+                    switch (identifier)
+                    {
+                        case DataParser.LOGIN_RESPONSE:
+                            string responseStatus = DataParser.getResponseStatus(payloadbytes);
+                            if (responseStatus == "OK")
+                            {
+                                this.connected = true;
+                            }
+                            else
+                            {
+                                callback("yeet");
+                                Console.WriteLine($"login failed \"{responseStatus}\"");
+                                //tryLogin();
+                            }
+                            break;
+                        case DataParser.START_SESSION:
+                            this.sessionRunning = true;
+                            sendMessage(DataParser.getStartSessionJson());
+                            break;
+                        case DataParser.STOP_SESSION:
+                            this.sessionRunning = false;
+                            sendMessage(DataParser.getStopSessionJson());
+                            break;
+                        case DataParser.SET_RESISTANCE:
+                            if (this.handler == null)
+                            {
+                                Console.WriteLine("handler is null");
+                                sendMessage(DataParser.getSetResistanceResponseJson(false));
+                            }
+                            else
+                            {
+                                this.handler.setResistance(DataParser.getResistanceFromJson(payloadbytes));
+                                sendMessage(DataParser.getSetResistanceResponseJson(true));
+                            }
+                            break;
+                        default:
+                            Console.WriteLine($"Received json with identifier {identifier}:\n{Encoding.ASCII.GetString(payloadbytes)}");
+                            break;
+                    }
+                }
+                else if (DataParser.isRawData(messageBytes))
+                {
+                    Console.WriteLine($"Received data: {BitConverter.ToString(payloadbytes)}");
+                }
+
+                totalBufferReceived -= expectedMessageLength;
+                expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            }
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+
+        }
+
+        private void sendMessage(byte[] message)
+        {
+            stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        private void OnWrite(IAsyncResult ar)
+        {
+            this.stream.EndWrite(ar);
+        }
+
+        #region interface
+        //maybe move this to other place
+        public void BPM(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        public void Bike(byte[] bytes)
+        {
+            if (!sessionRunning)
+            {
+                return;
+            }
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("no bytes");
+            }
+            byte[] message = DataParser.GetRawDataMessage(bytes);
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        #endregion
+
+        public bool IsConnected()
+        {
+            return this.connected;
+        }
+        private void tryLogin()
+        {
+            //TODO File in lezen
+
+            string hashUser = Hashing.Hasher.HashString(username);
+            string hashPassword = Hashing.Hasher.HashString(password);
+
+            byte[] message = DataParser.getJsonMessage(DataParser.GetLoginJson(hashUser, hashPassword));
+
+           
+            this.stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+
+
+        public void setHandler(IHandler handler)
+        {
+            this.handler = handler;
+        }
+    }
+}

DokterApp/DataParser.cs

@@ -0,0 +1,206 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using System.Text;
+
+namespace DokterApp
+{
+    public class DataParser
+    {
+        public const string LOGIN = "LOGIN";
+        public const string LOGIN_RESPONSE = "LOGIN RESPONSE";
+        public const string START_SESSION = "START SESSION";
+        public const string STOP_SESSION = "STOP SESSION";
+        public const string SET_RESISTANCE = "SET RESISTANCE";
+        /// <summary>
+        /// makes the json object with LOGIN identifier and username and password
+        /// </summary>
+        /// <param name="mUsername">username</param>
+        /// <param name="mPassword">password</param>
+        /// <returns>json object to ASCII to bytes</returns>
+        public static byte[] GetLoginJson(string mUsername, string mPassword)
+        {
+            dynamic json = new
+            {
+                identifier = LOGIN,
+                data = new
+                {
+                    username = mUsername,
+                    password = mPassword,
+                }
+            };
+
+            return Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json));
+        }
+
+        public static bool GetUsernamePassword(byte[] jsonbytes, out string username, out string password)
+        {
+            dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(jsonbytes));
+            try
+            {
+                username = json.data.username;
+                password = json.data.password;
+                return true;
+            }
+            catch
+            {
+                username = null;
+                password = null;
+                return false;
+            }
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier, dynamic data)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+                data
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        private static byte[] getJsonMessage(string mIdentifier)
+        {
+            dynamic json = new
+            {
+                identifier = mIdentifier,
+            };
+            return getMessage(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(json)), 0x01);
+        }
+
+        public static byte[] getLoginResponse(string mStatus)
+        {
+            return getJsonMessage(LOGIN_RESPONSE, new { status = mStatus });
+        }
+
+        public static string getResponseStatus(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.status;
+        }
+
+        /// <summary>
+        /// get the identifier from json
+        /// </summary>
+        /// <param name="bytes">json in ASCII</param>
+        /// <param name="identifier">gets the identifier</param>
+        /// <returns>if it sucseeded</returns>
+        public static bool getJsonIdentifier(byte[] bytes, out string identifier)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            byte messageId = bytes[4];
+
+            if (messageId == 0x01)
+            {
+                dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(bytes.Skip(5).ToArray()));
+                identifier = json.identifier;
+                return true;
+            }
+            else
+            {
+                identifier = "";
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// checks if the de message is raw data according to the protocol
+        /// </summary>
+        /// <param name="bytes">message</param>
+        /// <returns>if message contains raw data</returns>
+        public static bool isRawData(byte[] bytes)
+        {
+            if (bytes.Length <= 5)
+            {
+                throw new ArgumentException("bytes to short");
+            }
+            return bytes[4] == 0x02;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload, messageId and clientId
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="messageId"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        private static byte[] getMessage(byte[] payload, byte messageId)
+        {
+            byte[] res = new byte[payload.Length + 5];
+
+            Array.Copy(BitConverter.GetBytes(payload.Length + 5), 0, res, 0, 4);
+            res[4] = messageId;
+            Array.Copy(payload, 0, res, 5, payload.Length);
+
+            return res;
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is raw data
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] GetRawDataMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x02);
+        }
+
+        /// <summary>
+        /// constructs a message with the payload and clientId and assumes the payload is json
+        /// </summary>
+        /// <param name="payload"></param>
+        /// <param name="clientId"></param>
+        /// <returns>the message ready for sending</returns>
+        public static byte[] getJsonMessage(byte[] payload)
+        {
+            return getMessage(payload, 0x01);
+        }
+
+        public static byte[] getStartSessionJson()
+        {
+            return getJsonMessage(START_SESSION);
+        }
+
+        public static byte[] getStopSessionJson()
+        {
+            return getJsonMessage(STOP_SESSION);
+        }
+
+        public static byte[] getSetResistanceJson(float mResistance)
+        {
+            dynamic data = new
+            {
+                resistance = mResistance
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static byte[] getSetResistanceResponseJson(bool mWorked)
+        {
+            dynamic data = new
+            {
+                worked = mWorked
+            };
+            return getJsonMessage(SET_RESISTANCE, data);
+        }
+
+        public static float getResistanceFromJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.resistance;
+        }
+
+        public static bool getResistanceFromResponseJson(byte[] json)
+        {
+            return ((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.worked;
+        }
+
+
+    }
+}

DokterApp/DokterApp.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <Import Project="..\Hashing\Hashing.projitems" Label="Shared" />
+
+  <ItemGroup>
+    <PackageReference Include="ChartControls" Version="1.3.3" />
+    <PackageReference Include="LiveCharts.Wpf" Version="0.9.7" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ProftaakRH\ProftaakRH.csproj" />
+  </ItemGroup>
+
+</Project>

DokterApp/ITab.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows.Input;
+
+namespace DokterApp
+{
+    public interface ITab
+    {
+        string Name { get; set; }
+        ICommand CloseCommand { get; }
+        event EventHandler CloseRequested;
+    }
+
+    public abstract class Tab : ITab
+    {
+        public string Name { get; set; }
+        public ICommand CloseCommand { get; }
+        public event EventHandler CloseRequested;
+
+        public Tab()
+        {
+            //CloseCommand = 
+        }
+
+    }
+
+}

DokterApp/MainWindow.xaml

@@ -0,0 +1,29 @@
+<Window x:Class="DokterApp.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:DokterApp"
+        mc:Ignorable="d"
+        WindowState="Maximized"
+        Title="Dokter App" >
+    <Grid RenderTransformOrigin="0.499,0.49">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="23*"/>
+            <RowDefinition Height="31*"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="0"/>
+            <ColumnDefinition/>
+        </Grid.ColumnDefinitions>
+        <StackPanel Grid.ColumnSpan="2" Grid.RowSpan="2" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="0,0,0,0" Orientation="Vertical">
+            <Label x:Name="Label" Content="Yo dokter login" Margin="0,0,0,20" HorizontalAlignment="Center"/>
+            <Label Content="Username" HorizontalContentAlignment="Center"/>
+            <TextBox x:Name="Username" TextWrapping="Wrap" Width="120"/>
+            <Label Content="Password" HorizontalContentAlignment="Center"/>
+            <TextBox x:Name="Password" TextWrapping="Wrap" Width="120"/>
+            <Button x:Name="Login" Content="Login" Margin="0,20,0,0" Click="Login_Click_1" />
+        </StackPanel>
+
+    </Grid>
+</Window>

DokterApp/MainWindow.xaml.cs

@@ -0,0 +1,54 @@
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+namespace DokterApp
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        Del handler;
+        Client client;
+        public MainWindow()
+        {
+            InitializeComponent();
+   
+        }
+
+        
+
+        private void Login_Click_1(object sender, RoutedEventArgs e)
+        {
+            WindowTabs windowTabs = new WindowTabs();
+            handler = windowTabs.NewTab;
+
+            this.Label.Content = "Waiting";
+            this.client = new Client("localhost", 5555, this.Username.Text, this.Password.Text, handler);
+            while (!client.IsConnected())
+            {
+            }
+            
+            
+            windowTabs.Show();
+            
+            this.Close();
+            
+        }
+
+    }
+
+    public delegate void Del(string message);
+}

DokterApp/UserControlForTab.xaml

@@ -0,0 +1,92 @@
+<UserControl x:Class="DokterApp.UserControlForTab"
+             xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:DokterApp"
+             xmlns:constantChanges="clr-namespace:DokterApp"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800" d:DataContext="{d:DesignInstance constantChanges:UserControlForTab}">
+    <Grid Margin="15,5,15,15">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="5*"/>
+            <ColumnDefinition Width="3*"/>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="43*"/>
+            <RowDefinition Height="47*"/>
+            <RowDefinition Height="180*"/>
+            <RowDefinition Height="180*"/>
+        </Grid.RowDefinitions>
+        <StackPanel Orientation="Horizontal" Grid.RowSpan="2" Margin="0,0,0,22">
+            <StackPanel.Resources>
+                <Style TargetType="{x:Type Label}">
+                    <Setter Property="Margin" Value="0,0,20,0"/>
+                </Style>
+            </StackPanel.Resources>
+            <Label Content="UserName" Name="Username_Label"/>
+            <Label Content="Status: " Name="Status_Label"/>
+        </StackPanel>
+        <StackPanel Margin="0,10,0,0" Grid.RowSpan="2" Grid.Row="1">
+            <StackPanel.Resources>
+                <Style TargetType="{x:Type DockPanel}">
+                    <Setter Property="Margin" Value="0,20,0,0"/>
+                </Style>
+            </StackPanel.Resources>
+            <DockPanel Height="26" LastChildFill="False" HorizontalAlignment="Stretch">
+                <Label Content="Resistance" Width="110" DockPanel.Dock="Right"/>
+                <Label Content="Current Speed" Width="110" DockPanel.Dock="Left"/>
+                <Label Content="Current BPM" Width="110" DockPanel.Dock="Top"/>
+            </DockPanel>
+            <DockPanel Height="26" LastChildFill="False" HorizontalAlignment="Stretch">
+                <TextBox Name="textBox_Resistance" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Right" IsReadOnly="true"/>
+                <TextBox Name="textBox_CurrentSpeed" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Left" IsReadOnly="true"/>
+                <TextBox Name="textBox_CurrentBPM" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Top" Height="26" IsReadOnly="true"/>
+            </DockPanel>
+            <DockPanel Height="26" LastChildFill="False">
+                <Label Content="Distance Covered" Width="110" DockPanel.Dock="Right"/>
+                <Label Content="Current Power" Width="110" DockPanel.Dock="Left"/>
+                <Label Content="Acc. Power" Width="110" DockPanel.Dock="Top"/>
+            </DockPanel>
+            <DockPanel Height="26" LastChildFill="False">
+                <TextBox Name="textBox_DistanceCovered" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Right" IsReadOnly="true"/>
+                <TextBox Name="textBox_CurrentPower" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Left" IsReadOnly="true"/>
+                <TextBox Name="textBox_AccPower" Text="" TextWrapping="Wrap" Width="110" DockPanel.Dock="Top" Height="26" IsReadOnly="true"/>
+            </DockPanel>
+        </StackPanel>
+        <ListBox Name="ChatBox"  Grid.Column="1" Margin="59,41,0,0" SelectionChanged="ListBox_SelectionChanged" Grid.RowSpan="3"/>
+        <TextBox Name="textBox_Chat" Grid.Column="1" HorizontalAlignment="Left" Margin="59,10,0,0" Grid.Row="3" Text="TextBox" TextWrapping="Wrap" VerticalAlignment="Top" Width="235"/>
+        <Button Content="Button" Grid.Column="1" HorizontalAlignment="Left" Margin="59,33,0,0" Grid.Row="3" VerticalAlignment="Top" Click="Button_Click"/>
+        <Button Content="Start Session" Grid.Column="1" HorizontalAlignment="Left" Margin="69,86,0,0" Grid.Row="3" VerticalAlignment="Top" Width="97" Click="StartSession_Click"/>
+        <Button Content="Stop Session" Grid.Column="1" HorizontalAlignment="Left" Margin="187,86,0,0" Grid.Row="3" VerticalAlignment="Top" Width="97" Click="StopSession_Click"/>
+        <TextBox x:Name="textBox_SetResistance" Grid.Column="1" HorizontalAlignment="Left" Margin="69,128,0,0" Grid.Row="3" TextWrapping="Wrap" VerticalAlignment="Top" Width="97"/>
+        <Button Content="Set Resistance" Grid.Column="1" HorizontalAlignment="Left" Margin="187,128,0,0" Grid.Row="3" VerticalAlignment="Top" Width="97" Height="18" Click="SetResistance_Click"/>
+        <lvc:CartesianChart Grid.Row="3" AnimationsSpeed="0:0:0.5" Hoverable="False" DataTooltip="{x:Null}" Margin="-10,33,10,0">
+            <lvc:CartesianChart.Series>
+                <lvc:LineSeries Values="{Binding ChartValues}" 
+                                PointGeometry="{x:Null}" 
+                                LineSmoothness="1"
+                                StrokeThickness="6" 
+                                Stroke="#F34336"
+                                Fill="Transparent"/>
+            </lvc:CartesianChart.Series>
+            <lvc:CartesianChart.AxisX>
+                <lvc:Axis LabelFormatter="{Binding DateTimeFormatter}" 
+                          MaxValue="{Binding AxisMax}" 
+                          MinValue="{Binding AxisMin}"
+                          Unit="{Binding AxisUnit}">
+                    <lvc:Axis.Separator>
+                        <lvc:Separator Step="{Binding AxisStep}" />
+                    </lvc:Axis.Separator>
+                </lvc:Axis>
+            </lvc:CartesianChart.AxisX>
+        </lvc:CartesianChart>
+        <ComboBox Name="DropBox" HorizontalAlignment="Left" Margin="0,6,0,0" Grid.Row="3" VerticalAlignment="Top" Width="190" SelectionChanged="InjectStopOnClick">
+            <ComboBoxItem Content="Speed"/>
+            <ComboBoxItem Content="BPM"/>
+            <ComboBoxItem Content="Resistance"/>
+        </ComboBox>
+        <Button Content="Client Info" Grid.Column="1" HorizontalAlignment="Left" Margin="207,6,0,0" VerticalAlignment="Top" Height="26" Width="82" Click="ClientInfo_Click"/>
+    </Grid>
+</UserControl>

DokterApp/UserControlForTab.xaml.cs

@@ -0,0 +1,190 @@
+using LiveCharts;
+using LiveCharts.Configurations;
+using LiveCharts.Wpf;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace DokterApp
+{
+    /// <summary>
+    /// Interaction logic for UserControlForTab.xaml
+    /// </summary>
+    public partial class UserControlForTab : UserControl, INotifyPropertyChanged
+    {
+
+        private double _axisMax;
+        private double _axisMin;
+        private double _trend;
+        public UserControlForTab()
+        {
+            InitializeComponent();
+            Username_Label.Content = "Bob";
+            Status_Label.Content = "Status: Dead";
+
+            //To handle live data easily, in this case we built a specialized type
+            //the MeasureModel class, it only contains 2 properties
+            //DateTime and Value
+            //We need to configure LiveCharts to handle MeasureModel class
+            //The next code configures MeasureModel  globally, this means
+            //that LiveCharts learns to plot MeasureModel and will use this config every time
+            //a IChartValues instance uses this type.
+            //this code ideally should only run once
+            //you can configure series in many ways, learn more at 
+            //http://lvcharts.net/App/examples/v1/wpf/Types%20and%20Configuration
+
+            var mapper = Mappers.Xy<MeasureModel>()
+                .X(model => model.DateTime.Ticks)   //use DateTime.Ticks as X
+                .Y(model => model.Value);           //use the value property as Y
+
+            //lets save the mapper globally.
+            Charting.For<MeasureModel>(mapper);
+
+            //the values property will store our values array
+            ChartValues = new ChartValues<MeasureModel>();
+
+            //lets set how to display the X Labels
+            DateTimeFormatter = value => new DateTime((long)value).ToString("mm:ss");
+
+            //AxisStep forces the distance between each separator in the X axis
+            AxisStep = TimeSpan.FromSeconds(1).Ticks;
+            //AxisUnit forces lets the axis know that we are plotting seconds
+            //this is not always necessary, but it can prevent wrong labeling
+            AxisUnit = TimeSpan.TicksPerSecond;
+
+            SetAxisLimits(DateTime.Now);
+
+            //The next code simulates data changes every 300 ms
+
+            IsReading = false;
+
+            DataContext = this;
+        }
+
+        public double AxisMax
+        {
+            get { return _axisMax; }
+            set
+            {
+                _axisMax = value;
+                OnPropertyChanged("AxisMax");
+            }
+        }
+        public double AxisMin
+        {
+            get { return _axisMin; }
+            set
+            {
+                _axisMin = value;
+                OnPropertyChanged("AxisMin");
+            }
+        }
+
+        public bool IsReading { get; set; }
+
+        private void Read()
+        {
+            var r = new Random();
+
+            while (IsReading)
+            {
+                Thread.Sleep(150);
+                var now = DateTime.Now;
+
+                _trend += r.Next(-8, 10);
+
+                ChartValues.Add(new MeasureModel
+                {
+                    DateTime = now,
+                    Value = _trend
+                });
+
+                SetAxisLimits(now);
+
+                //lets only use the last 150 values
+                if (ChartValues.Count > 150) ChartValues.RemoveAt(0);
+            }
+        }
+
+        private void SetAxisLimits(DateTime now)
+        {
+            AxisMax = now.Ticks + TimeSpan.FromSeconds(1).Ticks; // lets force the axis to be 1 second ahead
+            AxisMin = now.Ticks - TimeSpan.FromSeconds(8).Ticks; // and 8 seconds behind
+        }
+
+        private void InjectStopOnClick(object sender, RoutedEventArgs e)
+        {
+            IsReading = !IsReading;
+            if (IsReading) Task.Factory.StartNew(Read);
+        }
+
+
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged(string propertyName = null)
+        {
+            if (PropertyChanged != null)
+                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            
+        }
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            ChatBox.Items.Add(textBox_Chat.Text);
+        }
+
+        private void StartSession_Click(object sender, RoutedEventArgs e)
+        {
+
+        }
+
+        private void StopSession_Click(object sender, RoutedEventArgs e)
+        {
+
+        }
+
+        private void SetResistance_Click(object sender, RoutedEventArgs e)
+        {
+
+        }
+
+        private void ClientInfo_Click(object sender, RoutedEventArgs e)
+        {
+            MessageBox.Show("Firstname:\tBob\n" +
+                "Lastname:\t\tde Bouwer");
+        }
+
+        private void DropBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            //TODO
+            //Andere graph
+        }
+
+        public ChartValues<MeasureModel> ChartValues { get; set; }
+        public Func<double, string> DateTimeFormatter { get; set; }
+        public double AxisStep { get; set; }
+        public double AxisUnit { get; set; }
+    }
+
+    public class MeasureModel
+    {
+        public DateTime DateTime { get; set; }
+        public double Value { get; set; }
+    }
+}

DokterApp/UserTab.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace DokterApp
+{
+    class UserTab : Tab
+    {
+        public UserTab()
+        {
+            Name = "Piet";
+        }
+    }
+}

DokterApp/WindowTabs.xaml

@@ -0,0 +1,16 @@
+<Window x:Class="DokterApp.WindowTabs"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:DokterApp"
+        mc:Ignorable="d"
+        WindowState="Maximized"
+        Title="WindowTabs" Height="450" Width="800">
+    <Grid>
+        <TabControl x:Name="tabControl" Loaded="tabControl_Load" TabStripPlacement="Left" Margin="0,23,0,0" />
+        <Button Content="Button" HorizontalAlignment="Left" Margin="578,125,0,0" VerticalAlignment="Top" Click="Button_Click"/>
+        <Button Content="Button" HorizontalAlignment="Left" Margin="10,0,0,0" VerticalAlignment="Top"/>
+
+    </Grid>
+</Window>

DokterApp/WindowTabs.xaml.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace DokterApp
+{
+    /// <summary>
+    /// Interaction logic for WindowTabs.xaml
+    /// </summary>
+    public partial class WindowTabs : Window
+    {
+        public TabControl tbControl;
+        public WindowTabs()
+        {
+            InitializeComponent();
+        }
+
+        private void tabControl_Load(object sender, RoutedEventArgs e)
+        {
+            this.tbControl = (sender as TabControl);
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            NewTab("Test");
+        }
+
+        public void NewTab(string username)
+        {
+            Application.Current.Dispatcher.Invoke((Action)delegate {
+                // your code
+                TabItem newTabItem = new TabItem
+                {
+                    Header = username,
+                    Width = 110,
+                    Height = 40
+                };
+                newTabItem.Content = new UserControlForTab();
+                this.tbControl.Items.Add(newTabItem);
+            });
+            
+        }
+    }
+}

Hashing/Hasher.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Hashing
+{
+    class Hasher
+    {
+        public static byte[] GetHash(string input)
+        {
+            using (HashAlgorithm algorithm = SHA256.Create())
+            {
+                return algorithm.ComputeHash(Encoding.UTF8.GetBytes(input));
+            }
+        }
+
+        public static string HashString(string input)
+        {
+            StringBuilder sb = new StringBuilder();
+            foreach (byte b in GetHash(input)) {
+                sb.Append(b.ToString("X2"));
+            }
+            return sb.ToString();
+        }
+    }
+}

Hashing/Hashing.projitems

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
+    <HasSharedItems>true</HasSharedItems>
+    <SharedGUID>70277749-d423-4871-b692-2efc5a6ed932</SharedGUID>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration">
+    <Import_RootNamespace>Hashing</Import_RootNamespace>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildThisFileDirectory)Hasher.cs" />
+  </ItemGroup>
+</Project>

Hashing/Hashing.shproj

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>70277749-d423-4871-b692-2efc5a6ed932</ProjectGuid>
+    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.Default.props" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.props" />
+  <PropertyGroup />
+  <Import Project="Hashing.projitems" Label="Shared" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.CSharp.targets" />
+</Project>

Message/Message.cs

@@ -0,0 +1,71 @@
+using Newtonsoft.Json;
+using System;
+
+namespace Message
+{
+    /// <summary>
+    /// Message class to handle traffic between clients and server
+    /// </summary>
+    public class Message
+    {
+
+        public static void Main(string[] args)
+        {
+
+        }
+        /// <summary>
+        /// identifier for the message
+        /// </summary>
+        public Identifier Identifier
+        {
+            get;set;
+        }
+
+        /// <summary>
+        /// payload of the message, the actual text
+        /// </summary>
+        public string Payload
+        {
+            get;set;
+        }
+
+        /// <summary>
+        /// constructs a new message with the given parameters
+        /// </summary>
+        /// <param name="identifier">the identifier</param>
+        /// <param name="payload">the payload</param>
+        public Message(Identifier identifier, string payload)
+        {
+            this.Identifier = identifier;
+            this.Payload = payload;
+        }
+
+        /// <summary>
+        /// serializes this object to a JSON string
+        /// </summary>
+        /// <returns>a JSON representation of this object</returns>
+        public string Serialize()
+        {
+            return JsonConvert.SerializeObject(this);
+        }
+
+        /// <summary>
+        /// deserializes a JSON string into a new Message object
+        /// </summary>
+        /// <param name="json">the JSON string to deserialize</param>
+        /// <returns>a new <c>Message</c> object from the JSON string</returns>
+        public static Message Deserialize(string json)
+        {
+            return (Message)JsonConvert.DeserializeObject(json);
+        }
+    }
+
+    /// <summary>
+    /// Identifier enum for the Message objects
+    /// </summary>
+    public enum Identifier
+    {
+        LOGIN,
+        CHAT,
+    }
+}

Message/Message.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+  </ItemGroup>
+
+</Project>

ProftaakRH/BLEHandler.cs

@@ -4,25 +4,49 @@ using System.Text;
 using Avans.TI.BLE;
 using System.Threading;
 using System.Security.Cryptography;
+using ProftaakRH;
 
 namespace Hardware
 {
-    class BLEHandler
+    /// <summary>
+    /// <c>BLEHandler</c> class that handles connection and traffic to and from the bike
+    /// </summary>
+    public class BLEHandler : IHandler
     {
-        IDataConverter dataConverter;
+        List<IDataReceiver> dataReceivers;
         private BLE bleBike;
         private BLE bleHeart;
         public bool Running { get; set; }
 
-        public BLEHandler(IDataConverter dataConverter)
+        /// <summary>
+        /// Makes a new BLEHandler object
+        /// </summary>
+        /// <param name="dataReceiver">the dataconverter object</param>
+        public BLEHandler(IDataReceiver dataReceiver)
         {
-            this.dataConverter = dataConverter;
-            bool running = false;
+            this.dataReceivers = new List<IDataReceiver> { dataReceiver };
+
         }
 
+        public BLEHandler(List<IDataReceiver> dataReceivers)
+        {
+            this.dataReceivers = dataReceivers;
+
+        }
+
+        public void addDataReceiver(IDataReceiver dataReceiver)
+        {
+            this.dataReceivers.Add(dataReceiver);
+        }
+
+        /// <summary>
+        /// Checks for available devices to connect to, and if one is found, it connects to it
+        /// </summary>
         public void Connect()
         {
+            
             BLE bleBike = new BLE();
+
             Thread.Sleep(1000); // We need some time to list available devices
 
             // List available devices
@@ -40,6 +64,11 @@ namespace Hardware
                 }
             }
         }
+
+        /// <summary>
+        /// Connects to the device with the given name
+        /// </summary>
+        /// <param name="deviceName">The name of the device to connect to</param>
         public async void Connect(string deviceName)
         {
             int errorCode = 0;
@@ -95,23 +124,32 @@ namespace Hardware
 
             Console.WriteLine("connected to BLE");
             this.Running = true;
+
         }
 
+        /// <summary>
+        /// Callback for when the subscription value of the ble bike has changed
+        /// </summary>
+        /// <param name="sender"> the sender object</param>
+        /// <param name="e">the value changed event</param>
         private void BleBike_SubscriptionValueChanged(object sender, BLESubscriptionValueChangedEventArgs e)
         {
-            //Console.WriteLine("Received from {0}: {1}", e.ServiceName,
-            //    BitConverter.ToString(e.Data).Replace("-", " "));
-            //send to dataconverter
 
             if (e.ServiceName == "6e40fec2-b5a3-f393-e0a9-e50e24dcca9e")
             {
                 byte[] payload = new byte[8];
                 Array.Copy(e.Data, 4, payload, 0, 8);
-                this.dataConverter.Bike(payload);
+                foreach (IDataReceiver dataReceiver in this.dataReceivers)
+                {
+                    dataReceiver.Bike(payload);
+                }
             }
             else if (e.ServiceName == "00002a37-0000-1000-8000-00805f9b34fb")
             {
-                this.dataConverter.BPM(e.Data);
+                foreach (IDataReceiver dataReceiver in this.dataReceivers)
+                {
+                    dataReceiver.BPM(e.Data);
+                }
             }
             else
             {
@@ -120,6 +158,9 @@ namespace Hardware
 
         }
 
+        /// <summary>
+        /// Disposes of the current BLE object, if it exists.
+        /// </summary>
         private void disposeBLE()
         {
             this.bleBike?.Dispose();
@@ -127,8 +168,17 @@ namespace Hardware
             this.Running = false;
         }
 
+        /// <summary>
+        /// Method <c>setResistance</c> converts the input percentage to bytes and sends it to the bike.
+        /// </summary>
+        /// <param name="percentage">The precentage of resistance to set</param>
         public void setResistance(float percentage)
         {
+            if (!this.Running)
+            {
+                Console.WriteLine("BLE is not running");
+                return;
+            }
             byte[] antMessage = new byte[13];
             antMessage[0] = 0x4A;
             antMessage[1] = 0x09;
@@ -140,7 +190,7 @@ namespace Hardware
                 antMessage[i] = 0xFF;
             }
             antMessage[11] = (byte)Math.Max(Math.Min(Math.Round(percentage / 0.5), 255), 0);
-            //antMessage[11] = 50; //hardcoded for testing
+
 
             byte checksum = 0;
             for (int i = 0; i < 12; i++)
@@ -151,7 +201,7 @@ namespace Hardware
             antMessage[12] = checksum;//reminder that i am dumb :P
 
 
-            bleBike.WriteCharacteristic("6E40FEC3-B5A3-F393-E0A9-E50E24DCCA9E", antMessage);
+            bleBike.WriteCharacteristic("6e40fec3-b5a3-f393-e0a9-e50e24dcca9e", antMessage);
         }
     }
 }

ProftaakRH/BikeSimulator.cs

@@ -1,4 +1,5 @@
 using LibNoise.Primitive;
+using ProftaakRH;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,9 +10,9 @@ using System.Threading;
 
 namespace Hardware.Simulators
 {
-    class BikeSimulator : IHandler
+    public class BikeSimulator : IHandler
     {
-        IDataConverter dataConverter;
+        List<IDataReceiver> dataReceivers;
         private int elapsedTime = 0;
         private int eventCounter = 0;
         private double distanceTraveled = 0;
@@ -20,33 +21,52 @@ namespace Hardware.Simulators
         private int BPM = 0;
         private int cadence = 0;
         private double resistance = 0;
+        private double power;
+        private double accPower;
 
-        byte[] array;
+        byte[] speedArray;
+        byte[] powerArray;
+        byte[] accPowerArray;
 
 
 
-        public BikeSimulator(IDataConverter dataConverter)
+        public BikeSimulator(IDataReceiver dataReceiver)
         {
-            this.dataConverter = dataConverter;
+            this.dataReceivers = new List<IDataReceiver> { dataReceiver };
         }
+
+        public BikeSimulator(List<IDataReceiver> dataReceivers)
+        {
+            this.dataReceivers = dataReceivers;
+        }
+
+        public void addDataReceiver(IDataReceiver dataReceiver)
+        {
+            this.dataReceivers.Add(dataReceiver);
+        }
+
         public void StartSimulation()
         {
+            Console.WriteLine("simulating bike...");
             //Example BLE Message
             //4A-09-4E-05-19-16-00-FF-28-00-00-20-F0
 
             float x = 0.0f;
 
             //Perlin for Random values
-            ImprovedPerlin improvedPerlin = new ImprovedPerlin(0,LibNoise.NoiseQuality.Best);
+            ImprovedPerlin improvedPerlin = new ImprovedPerlin(0, LibNoise.NoiseQuality.Best);
 
             while (true)
             {
-                CalculateVariables(improvedPerlin.GetValue(x)+1);
+                CalculateVariables(improvedPerlin.GetValue(x) + 1);
 
                 //Simulate sending data
-                dataConverter.Bike(GenerateBike0x19());
-                dataConverter.Bike(GenerateBike0x10());
-                dataConverter.BPM(GenerateHeart());
+                foreach (IDataReceiver dataReceiver in this.dataReceivers)
+                {
+                    dataReceiver.Bike(GenerateBike0x19());
+                    dataReceiver.Bike(GenerateBike0x10());
+                    dataReceiver.BPM(GenerateHeart());
+                }
 
                 Thread.Sleep(1000);
 
@@ -60,79 +80,50 @@ namespace Hardware.Simulators
         //Generate an ANT message for page 0x19
         private byte[] GenerateBike0x19()
         {
-            byte[] bikeByte = { 0x19, Convert.ToByte(eventCounter%256), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
+            byte statByte = (byte)(powerArray[1] >> 4);
+            byte[] bikeByte = { 0x19, Convert.ToByte(eventCounter % 256), Convert.ToByte(cadence % 254), accPowerArray[0], accPowerArray[1], powerArray[0], statByte, 0x20 };
             return bikeByte;
         }
 
         //Generate an ANT message for page 0x10
         private byte[] GenerateBike0x10()
         {
-            byte[] bikeByte = { 0x10, Convert.ToByte(equipmentType), Convert.ToByte(elapsedTime*4%64), Convert.ToByte(distanceTraveled), array[0], array[1], Convert.ToByte(BPM), 0xFF };
+            byte[] bikeByte = { 0x10, Convert.ToByte(equipmentType), Convert.ToByte(elapsedTime * 4 % 64), Convert.ToByte(distanceTraveled), speedArray[0], speedArray[1], Convert.ToByte(BPM), 0xFF };
             return bikeByte;
         }
 
         //Generate an ANT message for BPM
         private byte[] GenerateHeart()
         {
-            byte[] hartByte = { 0x00, Convert.ToByte(BPM)};
+            byte[] hartByte = { 0x00, Convert.ToByte(BPM) };
             return hartByte;
         }
 
-        //Generate an ANT message for resistance
-        public byte[] GenerateResistance(float percentage)
-        {
-            byte[] antMessage = new byte[13];
-            antMessage[0] = 0x4A;
-            antMessage[1] = 0x09;
-            antMessage[2] = 0x4E;
-            antMessage[3] = 0x05;
-            antMessage[4] = 0x30;
-            for (int i = 5; i < 11; i++)
-            {
-                antMessage[i] = 0xFF;
-            }
-            antMessage[11] = (byte)Math.Max(Math.Min(Math.Round(percentage / 0.5), 255), 0);
-            //antMessage[11] = 50; //hardcoded for testing
 
-            byte checksum = 0;
-            for (int i = 0; i < 12; i++)
-            {
-                checksum ^= antMessage[i];
-            }
-
-            antMessage[12] = checksum;//reminder that i am dumb :P
-
-            return antMessage;
-        }
 
         //Calculates the needed variables
         //Input perlin value
         private void CalculateVariables(float perlin)
         {
-            this.speed = perlin * 5 / 0.01 ;
+            this.speed = perlin * 5 / 0.01;
             short sped = (short)speed;
-            array = BitConverter.GetBytes(sped);
-            this.distanceTraveled = (distanceTraveled+(speed*0.01)) % 256;
-            this.BPM = (int) (perlin * 80);
-            this.cadence = (int)speed * 4;
-
+            speedArray = BitConverter.GetBytes(sped);
+            this.distanceTraveled = (distanceTraveled + (speed * 0.01)) % 256;
+            this.BPM = (int)(perlin * 80);
+            this.cadence = (int)speed / 6;
+            this.power = ((1 + resistance) * speed) / 14 % 4094;
+            this.accPower = (this.accPower + this.power) % 65536;
+            // TO DO power to power LSB & MSN
+            powerArray = BitConverter.GetBytes((short)this.power);
+            accPowerArray = BitConverter.GetBytes((short)accPower);
         }
 
         //Set resistance in simulated bike
-        public void setResistance(byte[] bytes)
+        public void setResistance(float percentage)
         {
-            //TODO check if message is correct
-            if(bytes.Length == 13)
-            {
-                this.resistance = Convert.ToDouble(bytes[11])/2;                
-            }
-        }
+            this.resistance = (byte)Math.Max(Math.Min(Math.Round(percentage / 0.5), 255), 0);
         }
 
-    //Interface for receiving a message on the simulated bike
-    interface IHandler
-    {
-        void setResistance(byte[] bytes);
-
     }
+
 }

ProftaakRH/DataConverter.cs

@@ -1,11 +1,19 @@
-using System;
+using ProftaakRH;
+using System;
 using System.Collections.Generic;
 using System.Text;
 
 namespace Hardware
 {
-    class DataConverter : IDataConverter
+    /// <summary>
+    /// DataConverter class that handles all conversion of received data from the BLE bike.
+    /// </summary>
+    class DataConverter : IDataReceiver
     {
+        /// <summary>
+        /// Receives, parses and displays any incoming data from the bike.
+        /// </summary>
+        /// <param name="bytes">the array of bytes that was received</param>
         public void Bike(byte[] bytes)
         {
             if (bytes == null)
@@ -30,7 +38,7 @@ namespace Hardware
                         Console.WriteLine($"Speed is : {input * 0.01}m/s (Range 65.534m/4)");
                         if (bytes[6] != 0xFF)
                         {
-                            Console.WriteLine("Heart rate byte: {0}", Convert.ToString(bytes[6],2));
+                            Console.WriteLine("Heart rate byte: {0}", Convert.ToString(bytes[6], 2));
                         }
                         break;
                     case 0x19:
@@ -44,16 +52,17 @@ namespace Hardware
 
                         Console.WriteLine($"Accumulated power: {accumPower} watt (Rollover 65536)");
 
-                        int instantPower = (bytes[5]) | (bytes[6]>>4)<<8;
+                        int instantPower = (bytes[5]) | (bytes[6] & 0b00001111) << 8;
 
 
                         if (instantPower != 0xFFF)
                             Console.WriteLine($"Instant power: {instantPower} watt (Range 0-4094)");
 
-                        int trainerStatus = bytes[6] & 0b00001111; // bit 4-7
+                        int trainerStatus = bytes[6] & 0b11110000; // bit 4-7
                         int flags = bytes[7] >> 4;
                         int FEState = bytes[7] & 0b00001111;
 
+
                         break;
 
                     default:
@@ -68,6 +77,10 @@ namespace Hardware
             Console.WriteLine();
         }
 
+        /// <summary>
+        /// Gets and prints the BPM from the message received from the bike.
+        /// </summary>
+        /// <param name="bytes">The array with bytes that was received</param>
         public void BPM(byte[] bytes)
         {
             if (bytes == null)
@@ -91,10 +104,4 @@ namespace Hardware
             Console.WriteLine();
         }
     }
-
-    interface IDataConverter
-    {
-        void BPM(byte[] bytes);
-        void Bike(byte[] bytes);
-    }
 }

ProftaakRH/IDataReceiver.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ProftaakRH
+{
+    public interface IDataReceiver
+    {
+        void BPM(byte[] bytes);
+        void Bike(byte[] bytes);
+    }
+}

ProftaakRH/IHandler.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ProftaakRH
+{
+    public interface IHandler
+    {
+        void setResistance(float percentage);
+    }
+}

ProftaakRH/Main.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Text;
 using Hardware;
@@ -11,12 +11,34 @@ namespace ProftaakRH
     {
         static void Main(string[] agrs)
         {
-            IDataConverter dataConverter = new DataConverter();
-            BikeSimulator bikeSimulator = new BikeSimulator(dataConverter);
-            bikeSimulator.setResistance(bikeSimulator.GenerateResistance(1f));
+            IDataReceiver dataReceiver = new DataConverter();
+            BLEHandler bLEHandler = new BLEHandler(dataReceiver);
+            BikeSimulator bikeSimulator = new BikeSimulator(dataReceiver);
+            bikeSimulator.setResistance(1);
             bikeSimulator.StartSimulation();
 
-            Console.ReadLine();
+
+            bool running = true;
+            while (running)
+            {
+                string input = Console.ReadLine();
+                input.ToLower();
+                input.Trim();
+                if (input == "quit")
+                {
+                    running = false;
+                    break;
+                }
+                try
+                {
+                    int resistance = Int32.Parse(input);
+                    bLEHandler.setResistance(resistance);
+                }
+                catch
+                {
+                    //do nothing
+                }
+            }
         }
     }
 }

ProftaakRH/ProftaakRH.csproj

@@ -7,6 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="LibNoise" Version="0.2.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="BLELibrary">

ProftaakRH/ProftaakRH.sln

@@ -3,9 +3,27 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.30413.136
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ProftaakRH", "ProftaakRH.csproj", "{0F053CC5-D969-4970-9501-B3428EA3D777}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ProftaakRH", "ProftaakRH.csproj", "{0F053CC5-D969-4970-9501-B3428EA3D777}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RH-Engine", "..\RH-Engine\RH-Engine.csproj", "{984E295E-47A2-41E7-90E5-50FDB9E67694}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server", "..\Server\Server.csproj", "{B1AB6F51-A20D-4162-9A7F-B3350B7510FD}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Message", "..\Message\Message.csproj", "{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DokterApp", "..\DokterApp\DokterApp.csproj", "{B150F08B-13DA-4D17-BD96-7E89F52727C6}"
+EndProject
+Project("{D954291E-2A0B-460D-934E-DC6B0785DB48}") = "Hashing", "..\Hashing\Hashing.shproj", "{70277749-D423-4871-B692-2EFC5A6ED932}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClientApp", "..\ClientApp\ClientApp.csproj", "{013AADBA-1D27-4A52-81D8-217697E91039}"
 EndProject
 Global
+	GlobalSection(SharedMSBuildProjectFiles) = preSolution
+		..\Hashing\Hashing.projitems*{013aadba-1d27-4a52-81d8-217697e91039}*SharedItemsImports = 5
+		..\Hashing\Hashing.projitems*{70277749-d423-4871-b692-2efc5a6ed932}*SharedItemsImports = 13
+		..\Hashing\Hashing.projitems*{b150f08b-13da-4d17-bd96-7e89f52727c6}*SharedItemsImports = 5
+		..\Hashing\Hashing.projitems*{b1ab6f51-a20d-4162-9a7f-b3350b7510fd}*SharedItemsImports = 5
+	EndGlobalSection
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
@@ -15,6 +33,26 @@ Global
 		{0F053CC5-D969-4970-9501-B3428EA3D777}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{0F053CC5-D969-4970-9501-B3428EA3D777}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{0F053CC5-D969-4970-9501-B3428EA3D777}.Release|Any CPU.Build.0 = Release|Any CPU
+		{984E295E-47A2-41E7-90E5-50FDB9E67694}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{984E295E-47A2-41E7-90E5-50FDB9E67694}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{984E295E-47A2-41E7-90E5-50FDB9E67694}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{984E295E-47A2-41E7-90E5-50FDB9E67694}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B1AB6F51-A20D-4162-9A7F-B3350B7510FD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B1AB6F51-A20D-4162-9A7F-B3350B7510FD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B1AB6F51-A20D-4162-9A7F-B3350B7510FD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B1AB6F51-A20D-4162-9A7F-B3350B7510FD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B150F08B-13DA-4D17-BD96-7E89F52727C6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B150F08B-13DA-4D17-BD96-7E89F52727C6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B150F08B-13DA-4D17-BD96-7E89F52727C6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B150F08B-13DA-4D17-BD96-7E89F52727C6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{013AADBA-1D27-4A52-81D8-217697E91039}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{013AADBA-1D27-4A52-81D8-217697E91039}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{013AADBA-1D27-4A52-81D8-217697E91039}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{013AADBA-1D27-4A52-81D8-217697E91039}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ProftaakRH/VRMessage.cs

@@ -0,0 +1,52 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace RH_Engine
+{
+    class VRMessage
+    {
+        public VRMessage(string id, params JObject[] data)
+        {
+            this.Id = id;
+            this.Data = data;
+        }
+
+        public string Id 
+        {
+            get; set; 
+        }
+
+        public JObject[] Data
+        {
+            get;set;
+        }
+
+        public string GetCommand()
+        {
+            StringBuilder sb = new StringBuilder();
+            StringWriter sw = new StringWriter(sb);
+
+            using (JsonWriter writer = new JsonTextWriter(sw))
+            {
+                writer.WriteStartObject();
+                writer.WritePropertyName("id");
+                writer.WriteValue(this.Id);
+                writer.WritePropertyName("data");
+                writer.WriteStartArray();
+                foreach (JObject o in Data)
+                {
+                    writer.WriteValue(o);
+                }
+                writer.WriteEndArray();
+                writer.WriteEndObject();
+            }
+
+            return sb.ToString();
+
+        }
+    }
+}

RH-Engine/Command.cs

@@ -0,0 +1,512 @@
+using LibNoise.Primitive;
+using Newtonsoft.Json;
+using System;
+
+namespace RH_Engine
+{
+    public class Command
+    {
+        public const string STANDARD_HEAD = "Head";
+        public const string STANDARD_GROUND = "GroundPlane";
+        public const string STANDARD_SUN = "SunLight";
+        public const string STANDARD_LEFTHAND = "LeftHand";
+        public const string STANDARD_RIGHTHAND = "RightHand";
+
+        private string tunnelID;
+
+        public Command(string tunnelID)
+        {
+            this.tunnelID = tunnelID;
+        }
+
+        public string TerrainCommand(int[] sizeArray, float[] heightsArray)
+        {
+            dynamic payload = new
+            {
+                id = "scene/terrain/add",
+                data = new
+                {
+                    size = sizeArray,
+                    heights = heightsArray
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string AddLayer(string uid, string texture)
+        {
+            dynamic payload = new
+            {
+                id = "scene/node/addlayer",
+                data = new
+                {
+                    id = uid,
+                    diffuse = @"C:\Users\woute\Downloads\NetworkEngine.18.10.10.1\NetworkEngine\data\NetworkEngine\textures\terrain\adesert_cracks_d.jpg",
+                    normal = @"C:\Users\woute\Downloads\NetworkEngine.18.10.10.1\NetworkEngine\data\NetworkEngine\textures\terrain\adesert_mntn_d.jpg",
+                    minHeight = 0,
+                    maxHeight = 10,
+                    fadeDist = 1
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string UpdateTerrain()
+        {
+            dynamic payload = new
+            {
+                id = "scene/terrain/update",
+                data = new
+                {
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string AddNodeCommand()
+        {
+            dynamic payload = new
+            {
+                id = "scene/node/add",
+                data = new
+                {
+                    name = "newNode",
+                    components = new
+                    {
+                        terrain = new
+                        {
+                            smoothnormals = true
+                        }
+                    }
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string DeleteNode(string uuid, string serialCode)
+        {
+            dynamic payload = new
+            {
+                id = "scene/node/delete",
+                serial = serialCode,
+                data = new
+                {
+                    id = uuid,
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string addPanel(string serialToSend, string uuidBike)
+        {
+            dynamic payload = new
+            {
+                id = "scene/node/add",
+                serial = serialToSend,
+                data = new
+                {
+                    name = "dashboard",
+                    parent = uuidBike,
+                    components = new
+                    {
+                        transform = new
+                        {
+                            position = new float[]
+                            {
+                                -1.5f, 1f, 0f
+                            },
+                            scale = 1,
+                            rotation = new int[]
+                            {
+                                -30, 90,0
+                            }
+                        },
+                        panel = new
+                        {
+                            size = new int[] { 1, 1 },
+                            resolution = new int[] { 512, 512 },
+                            background = new int[] { 1, 1, 1, 1 },
+                            castShadow = false
+                        }
+                    }
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string ColorPanel(string uuidPanel)
+        {
+            dynamic payload = new
+            {
+                id = "scene/panel/setclearcolor",
+                data = new
+                {
+                    id = uuidPanel,
+                    color = new float[] { 0f, 0f, 0f, 0f }
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string SwapPanel(string uuid)
+        {
+            dynamic payload = new
+            {
+                id = "scene/panel/swap",
+                data = new
+                {
+                    id = uuid
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        private string showOnPanel(string uuidPanel, string serialCode, string mText, int index)
+        {
+            dynamic payload = new
+            {
+                id = "scene/panel/drawtext",
+                serial = serialCode,
+                data = new
+                {
+                    id = uuidPanel,
+                    text = mText,
+                    position = new int[] { 4, 24 + index * 32 },
+                    size = 32.0,
+                    color = new int[] { 0, 0, 0, 1 },
+                    font = "segoeui"
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+
+        public string showBikespeed(string uuidPanel, string serialCode, double speed)
+        {
+            //dynamic payload = new
+            //{
+            //    id = "scene/panel/drawtext",
+            //    serial = serialCode,
+            //    data = new
+            //    {
+            //        id = uuidPanel,
+            //        text = "Speed: " + speed + " m/s",
+            //        position = new int[] { 4, 24 },
+            //        size = 36.0,
+            //        color = new int[] { 0, 0, 0, 1 },
+            //        font = "segoeui"
+            //    }
+            //};
+
+            //return JsonConvert.SerializeObject(Payload(payload));
+            return showOnPanel(uuidPanel, serialCode, "Speed: " + speed + " m/s", 0);
+        }
+
+        public string showHeartrate(string uuidPanel, string serialCode, int bpm)
+        {
+            return showOnPanel(uuidPanel, serialCode, "Heartrate: " + bpm + " bpm", 1);
+        }
+
+        public string showPower(string uuidPanel, string serialCode, double power)
+        {
+            return showOnPanel(uuidPanel, serialCode, "Inst. Power: " + power + " W", 2);
+        }
+
+        public string showResistance(string uuidPanel, string serialCode, double resistance)
+        {
+            return showOnPanel(uuidPanel, serialCode, "Resistance: " + resistance + " %", 3);
+        }
+
+        public string SwapPanelCommand(string uuid)
+        {
+            dynamic payload = new
+            {
+                id = "scene/panel/swap",
+                data = new
+                {
+                    id = uuid
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string ClearPanel(string uuid)
+        {
+            dynamic payload = new
+            {
+                id = "scene/panel/clear",
+                data = new
+                {
+                    id = uuid
+                }
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string AddBikeModel(string serial)
+        {
+            return AddModel("bike", serial, "data\\NetworkEngine\\models\\bike\\bike.fbx");
+        }
+
+        public string AddModel(string nodeName, string serial, string fileLocation)
+        {
+            return AddModel(nodeName, serial, fileLocation, null, new float[] { 0, 0, 0 }, 1, new float[] { 0, 0, 0 });
+        }
+
+        public string AddModel(string nodeName, string serial, string fileLocation, float[] positionVector, float scalar, float[] rotationVector)
+        {
+            return AddModel(nodeName, serial, fileLocation, null, positionVector, scalar, rotationVector);
+        }
+
+        public string AddModel(string nodeName, string serialToSend, string fileLocation, string animationLocation, float[] positionVector, float scalar, float[] rotationVector)
+        {
+            string namename = nodeName;
+            bool animatedBool = false;
+            if (animationLocation != null)
+            {
+                animatedBool = true;
+            }
+
+            dynamic payload = new
+            {
+                id = "scene/node/add",
+                serial = serialToSend,
+                data = new
+                {
+                    name = namename,
+                    components = new
+                    {
+                        transform = new
+                        {
+                            position = positionVector,
+                            scale = scalar,
+                            rotation = rotationVector
+                        },
+                        model = new
+                        {
+                            file = fileLocation,
+                            cullbackfaces = true,
+                            animated = animatedBool,
+                            animation = animationLocation
+                        },
+                    }
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string MoveTo(string uuid, string serial, float[] positionVector, string rotateValue, int speedValue, int timeValue)
+        {
+            return MoveTo(uuid, serial, "stop", positionVector, rotateValue, "linear", false, speedValue, timeValue);
+        }
+
+        private string MoveTo(string uuid, string serialCode, string stopValue, float[] positionVector, string rotateValue, string interpolateValue, bool followHeightValue, int speedValue, int timeValue)
+        {
+            dynamic payload = new
+            {
+                id = "scene/node/moveto",
+                serial = serialCode,
+                data = new
+                {
+                    id = uuid,
+                    stop = stopValue,
+                    position = positionVector,
+                    rotate = rotateValue,
+                    interpolate = interpolateValue,
+                    followheight = followHeightValue,
+                    speed = speedValue,
+                    time = timeValue
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string RouteCommand(string serialToSend)
+        {
+            ImprovedPerlin improvedPerlin = new ImprovedPerlin(4325, LibNoise.NoiseQuality.Best);
+            Random r = new Random();
+            dynamic payload = new
+            {
+                id = "route/add",
+                serial = serialToSend,
+                data = new
+                {
+                    nodes = new dynamic[]
+                    {
+                        new
+                        {
+                            /*pos = GetPos(0.6f, improvedPerlin)*/
+                            pos = new int[] {0,0,5 },
+                            dir = new int[] { r.Next(20,100),0,-r.Next(20, 100) }
+                        },
+                        new
+                        {
+                            //pos = GetPos(1.6f, improvedPerlin),
+                            pos = new int[] {50,0,0 },
+                             dir = new int[] { r.Next(20, 100),0,r.Next(20, 100) }
+                        },
+                        new
+                        {
+                            //pos = GetPos(2.654f, improvedPerlin),
+                             pos = new int[] {20,0,20 },
+                             dir = new int[] { r.Next(20, 100),0,r.Next(20, 100) }
+                        },
+                        new
+                        {
+                            //pos = GetPos(3.6543f, improvedPerlin),
+                             pos = new int[] {10,0,50 },
+                             dir = new int[] { -r.Next(3,7),0,r.Next(3,7) }
+                        },
+                        new
+                        {
+                            pos = new int[] {0,0,50 },
+                             dir = new int[] { -r.Next(20, 50),0,-r.Next(20, 50) }
+                        }
+                    }
+                }
+            };
+            //Console.WriteLine("route command: " + JsonConvert.SerializeObject(Payload(payload)));
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        private float[] GetPos(float n, ImprovedPerlin improvedPerlin)
+        {
+            float[] res = new float[] { improvedPerlin.GetValue(n) * 50, 0, improvedPerlin.GetValue(n) * 50 };
+            return res;
+        }
+
+        private int[] GetDir()
+        {
+            Random rng = new Random();
+            int[] dir = { rng.Next(50), 0, rng.Next(50) };
+            return dir;
+        }
+
+        public string RouteFollow(string routeID, string nodeID, float speedValue)
+        {
+            return RouteFollow(routeID, nodeID, speedValue, new float[] { 0, 0, 0 });
+        }
+
+        public string RouteFollow(string routeID, string nodeID, float speedValue, float[] rotateOffsetVector, float[] positionOffsetVector)
+        {
+            return RouteFollow(routeID, nodeID, speedValue, 0, "XYZ", 1, true, rotateOffsetVector, positionOffsetVector);
+        }
+
+        public string RouteFollow(string routeID, string nodeID, float speedValue, float[] positionOffsetVector)
+        {
+            return RouteFollow(routeID, nodeID, speedValue, 0, "XYZ", 1, true, new float[] { 0, 0, 0 }, positionOffsetVector);
+        }
+        public string RouteFollow(string routeID, string nodeID, float speedValue, float offsetValue, string rotateValue, float smoothingValue, bool followHeightValue, float[] rotateOffsetVector, float[] positionOffsetVector)
+        {
+            dynamic payload = new
+            {
+                id = "route/follow",
+                data = new
+                {
+                    route = routeID,
+                    node = nodeID,
+                    speed = speedValue,
+                    offset = offsetValue,
+                    rotate = rotateValue,
+                    smoothing = smoothingValue,
+                    followHeight = followHeightValue,
+                    rotateOffset = rotateOffsetVector,
+                    positionOffset = positionOffsetVector
+
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string RouteSpeed(float speedValue,string nodeID)
+        {
+            dynamic payload = new
+            {
+                id = "route/follow/speed",
+                data = new
+                {
+                    node = nodeID,
+                    speed = speedValue
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string RoadCommand(string uuid_route)
+        {
+            Console.WriteLine("road");
+            dynamic payload = new
+            {
+                id = "scene/road/add",
+                data = new
+                {
+                    route = uuid_route,
+                    diffuse = "data/NetworkEngine/textures/tarmac_diffuse.png",
+                    normal = "data/NetworkEngine/textures/tarmac_normale.png",
+                    specular = "data/NetworkEngine/textures/tarmac_specular.png",
+                    heightoffset = 1f
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string GetSceneInfoCommand(string serialToSend)
+        {
+            dynamic payload = new
+            {
+                id = "scene/get",
+                serial = serialToSend
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string ResetScene()
+        {
+            dynamic payload = new
+            {
+                id = "scene/reset",
+                serial = "reset"
+            };
+
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        public string SkyboxCommand(double timeToSet)
+        {
+            if (timeToSet < 0 || timeToSet > 24)
+            {
+                throw new Exception("The time must be between 0 and 24!");
+            }
+
+            dynamic payload = new
+            {
+                id = "scene/skybox/settime",
+                data = new
+                {
+                    time = timeToSet
+                }
+            };
+            return JsonConvert.SerializeObject(Payload(payload));
+        }
+
+        private object Payload(dynamic message)
+        {
+            return new
+            {
+                id = "tunnel/send",
+                data = new
+                {
+                    dest = tunnelID,
+                    data = message,
+                }
+            };
+        }
+    }
+}

RH-Engine/JSONParser.cs

@@ -0,0 +1,116 @@
+using Newtonsoft.Json;
+using System;
+
+namespace RH_Engine
+{
+    public class JSONParser
+    {
+        /// <summary>
+        /// returns all the users from the given response
+        /// </summary>
+        /// <param name="msg">the message gotten from the server, without the length prefix</param>
+        /// <returns></returns>
+        public static PC[] GetUsers(string msg)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(msg);
+            Newtonsoft.Json.Linq.JArray data = jsonData.data;
+            PC[] res = new PC[data.Count];
+            int counter = 0;
+            foreach (dynamic d in data)
+            {
+                res[counter] = new PC((string)d.clientinfo.host, (string)d.clientinfo.user);
+                counter++;
+            }
+
+            return res;
+        }
+
+        public static string GetIdSceneInfoChild(string msg, string nodeName)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(msg);
+            Newtonsoft.Json.Linq.JArray children = jsonData.data.data.data.children;
+            foreach (dynamic d in children)
+            {
+                if (d.name == nodeName)
+                {
+                    return d.uuid;
+                }
+            }
+            return null;
+        }
+
+        public static string GetSessionID(string msg, PC[] PCs)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(msg);
+            Newtonsoft.Json.Linq.JArray data = jsonData.data;
+            for (int i = data.Count - 1; i >= 0; i--)
+            {
+                dynamic d = data[i];
+                foreach (PC pc in PCs)
+                {
+                    if (d.clientinfo.host == pc.host && d.clientinfo.user == pc.user)
+                    {
+                        Console.WriteLine("[JSONPARSER] connecting to {0}, on {1} with id {2}", pc.user, pc.host, d.id);
+                        return d.id;
+                    }
+                }
+            }
+
+            return null;
+        }
+
+        public static bool GetStatus(string json)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(json);
+            return jsonData.data.data.status == "ok";
+        }
+
+        public static string GetSerial(string json)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(json);
+            return jsonData.data.data.serial;
+        }
+
+        public static string GetID(string json)
+        {
+            dynamic d = JsonConvert.DeserializeObject(json);
+            return d.id;
+        }
+
+        public static string GetTunnelID(string json)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(json);
+            if (jsonData.data.status == "ok")
+            {
+                return jsonData.data.id;
+            }
+            return null;
+        }
+
+        /// <summary>
+        /// method to get the uuid from requests for adding a node,route or road
+        /// </summary>
+        /// <param name="json">the json response froo the server</param>
+        /// <returns>the uuid of the created object</returns>
+        public static string GetResponseUuid(string json)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(json);
+            if (jsonData.data.data.status == "ok")
+            {
+                return jsonData.data.data.data.uuid;
+            }
+            return null;
+        }
+
+        public static string getPanelID(string json)
+        {
+            dynamic jsonData = JsonConvert.DeserializeObject(json);
+            if (jsonData.data.data.data.name == "dashboard")
+            {
+                Console.WriteLine(jsonData.data.data.data.uuid);
+                return jsonData.data.data.data.uuid;
+            }
+            return null;
+        }
+    }
+}

RH-Engine/Program.cs

@@ -0,0 +1,394 @@
+using LibNoise.Primitive;
+using Microsoft.VisualBasic.FileIO;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Net.Sockets;
+using System.Text;
+
+namespace RH_Engine
+{
+    public delegate void HandleSerial(string message);
+
+    public class Program
+    {
+        private static PC[] PCs = {
+            //new PC("DESKTOP-M2CIH87", "Fabian"),
+            //new PC("T470S", "Shinichi"),
+            //new PC("DESKTOP-DHS478C", "semme"),
+            new PC("HP-ZBOOK-SEM", "Sem"),
+            //new PC("DESKTOP-TV73FKO", "Wouter"),
+            //new PC("DESKTOP-SINMKT1", "Ralf van Aert"),
+            //new PC("NA", "Bart")
+        };
+
+        private static ServerResponseReader serverResponseReader;
+        private static string sessionId = string.Empty;
+        private static string tunnelId = string.Empty;
+        private static string cameraId = string.Empty;
+        private static string routeId = string.Empty;
+        private static string panelId = string.Empty;
+        private static string bikeId = string.Empty;
+        private static string headId = string.Empty;
+
+        private static Dictionary<string, HandleSerial> serialResponses = new Dictionary<string, HandleSerial>();
+
+        private static void Main(string[] args)
+        {
+            TcpClient client = new TcpClient("145.48.6.10", 6666);
+
+            CreateConnection(client.GetStream());
+        }
+
+        /// <summary>
+        /// initializes and starts the reading of the responses from the vr server
+        /// </summary>
+        /// <param name="stream">the networkstream</param>
+        private static void initReader(NetworkStream stream)
+        {
+            serverResponseReader = new ServerResponseReader(stream);
+            serverResponseReader.callback = HandleResponse;
+            serverResponseReader.StartRead();
+        }
+
+        /// <summary>
+        /// callback method that handles responses from the server
+        /// </summary>
+        /// <param name="message">the response message from the server</param>
+        public static void HandleResponse(string message)
+        {
+            //Console.WriteLine(message);
+            string id = JSONParser.GetID(message);
+
+            // because the first messages don't have a serial, we need to check on the id
+            if (id == "session/list")
+            {
+                sessionId = JSONParser.GetSessionID(message, PCs);
+            }
+            else if (id == "tunnel/create")
+            {
+                tunnelId = JSONParser.GetTunnelID(message);
+                if (tunnelId == null)
+                {
+                    Console.WriteLine("could not find a valid tunnel id!");
+                    return;
+                }
+            }
+
+            if (message.Contains("serial"))
+            {
+                //Console.WriteLine("GOT MESSAGE WITH SERIAL: " + message + "\n\n\n");
+                string serial = JSONParser.GetSerial(message);
+                //Console.WriteLine("Got serial " + serial);
+                if (serialResponses.ContainsKey(serial))
+                {
+                    serialResponses[serial].Invoke(message);
+                    serialResponses.Remove(serial);
+                }
+            }
+        }
+
+        /// <summary>
+        /// method that sends the speciefied message with the specified serial, and executes the given action upon receivind a reply from the server with this serial.
+        /// </summary>
+        /// <param name="stream">the networkstream to use</param>
+        /// <param name="message">the message to send</param>
+        /// <param name="serial">the serial to check for</param>
+        /// <param name="action">the code to be executed upon reveiving a reply from the server with the specified serial</param>
+        public static void SendMessageAndOnResponse(NetworkStream stream, string message, string serial, HandleSerial action)
+        {
+            serialResponses.Add(serial, action);
+            WriteTextMessage(stream, message);
+        }
+
+        /// <summary>
+        /// writes a message to the server
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        /// <param name="message">the message to send</param>
+        public static void WriteTextMessage(NetworkStream stream, string message)
+        {
+            byte[] msg = Encoding.ASCII.GetBytes(message);
+            byte[] res = new byte[msg.Length + 4];
+
+            Array.Copy(BitConverter.GetBytes(msg.Length), 0, res, 0, 4);
+            Array.Copy(msg, 0, res, 4, msg.Length);
+
+            stream.Write(res);
+
+            //Console.WriteLine("sent message " + message);
+        }
+
+        /// <summary>
+        /// connects to the server and creates the tunnel
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        private static void CreateConnection(NetworkStream stream)
+        {
+            initReader(stream);
+
+            WriteTextMessage(stream, "{\r\n\"id\" : \"session/list\",\r\n\"serial\" : \"list\"\r\n}");
+
+            // wait until we have got a sessionId
+            while (sessionId == string.Empty) { }
+
+            string tunnelCreate = "{\"id\" : \"tunnel/create\",	\"data\" :	{\"session\" : \"" + sessionId + "\"}}";
+
+            WriteTextMessage(stream, tunnelCreate);
+
+            // wait until we have a tunnel id
+            while (tunnelId == string.Empty) { }
+            Console.WriteLine("got tunnel id! sending commands...");
+            sendCommands(stream, tunnelId);
+        }
+
+        /// <summary>
+        /// sends all the commands to the server
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        /// <param name="tunnelID">the tunnel id to use</param>
+        private static void sendCommands(NetworkStream stream, string tunnelID)
+        {
+            Command mainCommand = new Command(tunnelID);
+
+            // Reset scene
+            WriteTextMessage(stream, mainCommand.ResetScene());
+            //headId = GetId("Root", stream, mainCommand);
+            //while (headId == string.Empty) { }
+
+            //Get sceneinfo
+            SendMessageAndOnResponse(stream, mainCommand.GetSceneInfoCommand("sceneinfo"), "sceneinfo",
+                (message) =>
+                {
+                    //Console.WriteLine("\r\n\r\n\r\nscene info" + message);
+                    cameraId = JSONParser.GetIdSceneInfoChild(message, "Camera");
+                    string headId = JSONParser.GetIdSceneInfoChild(message, "Head");
+                    string handLeftId = JSONParser.GetIdSceneInfoChild(message, "LeftHand");
+                    string handRightId = JSONParser.GetIdSceneInfoChild(message, "RightHand");
+
+                    //Force(stream, mainCommand.DeleteNode(handLeftId, "deleteHandL"), "deleteHandL", (message) => Console.WriteLine("Left hand deleted"));
+                    //Force(stream, mainCommand.DeleteNode(handRightId, "deleteHandR"), "deleteHandR", (message) => Console.WriteLine("Right hand deleted"));
+                });
+
+            //Add route, bike and put camera and bike to follow route at same speed.
+            SendMessageAndOnResponse(stream, mainCommand.RouteCommand("routeID"), "routeID", (message) => routeId = JSONParser.GetResponseUuid(message));
+            SendMessageAndOnResponse(stream, mainCommand.AddBikeModel("bikeID"), "bikeID",
+                (message) =>
+                {
+                bikeId = JSONParser.GetResponseUuid(message);
+                    SendMessageAndOnResponse(stream, mainCommand.addPanel("panelAdd", bikeId), "panelAdd",
+                        (message) =>
+                            {
+                                bool speedReplied = false;
+                                bool moveReplied = true;
+                                panelId = JSONParser.getPanelID(message);
+                                WriteTextMessage(stream, mainCommand.ColorPanel(panelId));
+                                WriteTextMessage(stream, mainCommand.ClearPanel(panelId));
+
+
+                                showPanel(stream, mainCommand, 5.3, 83, 52, 53);
+
+
+                                //while (!(speedReplied && moveReplied)) { }
+                                
+                                while (cameraId == string.Empty) { }
+                                SetFollowSpeed(5.0f, stream, mainCommand);
+                            });
+                });
+            
+                //Force(stream, mainCommand.addPanel("panelID", bikeId), "panelID",
+                //    (message) =>
+                //    {
+                //        Console.WriteLine("panel response: " + message);
+                //        panelId = JSONParser.GetResponseUuid(message);
+                //        while(bikeId == string.Empty) { }
+                //        SetFollowSpeed(5.0f, stream, mainCommand);
+                //    });
+                //SendMessageAndOnResponse(stream, maincommand.addpanel("panelid", bikeid), "panelid",
+                //    (message) =>
+                //    {
+                //        console.writeline("panelid: " + message);
+                //        //panelid = jsonparser.getpanelid(message);
+                //        panelid = jsonparser.getresponseuuid(message);
+                //        while (bikeid == string.empty) { }
+                //        setfollowspeed(5.0f, stream, maincommand);
+                //    });
+
+
+
+            //WriteTextMessage(stream, mainCommand.TerrainCommand(new int[] { 256, 256 }, null));
+            //string command;
+
+
+
+            //Console.WriteLine("id of head " + GetId(Command.STANDARD_HEAD, stream, mainCommand));
+
+            //command = mainCommand.AddModel("car", "data\\customModels\\TeslaRoadster.fbx");
+            //WriteTextMessage(stream, command);
+
+            //command = mainCommand.addPanel();
+            //  WriteTextMessage(stream, command);
+            //  string response = ReadPrefMessage(stream);
+            //  Console.WriteLine("add Panel response: \n\r" + response);
+            //  string uuidPanel = JSONParser.getPanelID(response);
+            //  WriteTextMessage(stream, mainCommand.ClearPanel(uuidPanel));
+            //  Console.WriteLine(ReadPrefMessage(stream));
+            //  WriteTextMessage(stream, mainCommand.bikeSpeed(uuidPanel, 2.42));
+            //  Console.WriteLine(ReadPrefMessage(stream));
+            //  WriteTextMessage(stream, mainCommand.ColorPanel(uuidPanel));
+            //  Console.WriteLine("Color panel: " + ReadPrefMessage(stream));
+            //  WriteTextMessage(stream, mainCommand.SwapPanel(uuidPanel));
+            //  Console.WriteLine("Swap panel: " + ReadPrefMessage(stream));
+            Console.WriteLine("id of head " + GetId(Command.STANDARD_HEAD, stream, mainCommand));
+        }
+
+        /// <summary>
+        /// gets the id of the object with the given name
+        /// </summary>
+        /// <param name="name">the name of the object</param>
+        /// <param name="stream">the network stream to send requests to</param>
+        /// <param name="createGraphics">the create graphics object to create all the commands</param>
+        /// <returns> the uuid of the object with the given name, <c>null</c> otherwise.</returns>
+        public static string GetId(string name, NetworkStream stream, Command createGraphics)
+        {
+            JArray children = GetChildren(stream, createGraphics);
+
+            foreach (dynamic child in children)
+            {
+                if (child.name == name)
+                {
+                    return child.uuid;
+                }
+            }
+            Console.WriteLine("Could not find id of " + name);
+            return null;
+        }
+
+        public static void CreateTerrain(NetworkStream stream, Command createGraphics)
+        {
+            float x = 0f;
+            float[] height = new float[256 * 256];
+            ImprovedPerlin improvedPerlin = new ImprovedPerlin(0, LibNoise.NoiseQuality.Best);
+            for (int i = 0; i < 256 * 256; i++)
+            {
+                height[i] = improvedPerlin.GetValue(x / 10, x / 10, x * 100) + 1;
+                x += 0.001f;
+            }
+            WriteTextMessage(stream, createGraphics.TerrainCommand(new int[] { 256, 256 }, height));
+
+            WriteTextMessage(stream, createGraphics.AddNodeCommand());
+        }
+
+        /// <summary>
+        /// gets all the children in the current scene
+        /// </summary>
+        /// <param name="stream">the network stream to send requests to</param>
+        /// <param name="createGraphics">the create graphics object to create all the commands</param>
+        /// <returns>all the children objects in the current scene</returns>
+        public static JArray GetChildren(NetworkStream stream, Command createGraphics)
+        {
+            JArray res = null;
+            SendMessageAndOnResponse(stream, createGraphics.GetSceneInfoCommand("getChildren"), "getChildren", (message) =>
+              {
+                  dynamic response = JsonConvert.DeserializeObject(message);
+                  res = response.data.data.data.children;
+              });
+            while (res == null) { }
+            return res;
+        }
+
+        /// <summary>
+        /// returns all objects in the current scene, as name-uuid tuples.
+        /// </summary>
+        /// <param name="stream">the network stream to send requests to</param>
+        /// <param name="createGraphics">the create graphics object to create all the commands</param>
+        /// <returns>an array of name-uuid tuples for each object</returns>
+        public static (string, string)[] GetObjectsInScene(NetworkStream stream, Command createGraphics)
+        {
+            JArray children = GetChildren(stream, createGraphics);
+            (string, string)[] res = new (string, string)[children.Count];
+
+            int i = 0;
+            foreach (dynamic child in children)
+            {
+                res[i] = (child.name, child.uuid);
+                i++;
+            }
+
+            return res;
+        }
+
+        
+        private static void showPanel(NetworkStream stream, Command mainCommand, double bikeSpeed, int bpm, int power, int resistance)
+        {
+            SendMessageAndOnResponse(stream, mainCommand.showBikespeed(panelId, "bikeSpeed", bikeSpeed), "bikeSpeed",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(stream, mainCommand.showHeartrate(panelId, "bpm", bpm), "bpm",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(stream, mainCommand.showPower(panelId, "power", power), "power",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+            SendMessageAndOnResponse(stream, mainCommand.showResistance(panelId, "resistance", resistance), "resistance",
+                (message) =>
+                {
+                    // TODO check if is drawn
+                });
+
+            // Check if every text is drawn!
+
+            WriteTextMessage(stream, mainCommand.SwapPanel(panelId));
+        }
+
+        private static void SetFollowSpeed(float speed, NetworkStream stream, Command mainCommand)
+        {
+            WriteTextMessage(stream, mainCommand.RouteFollow(routeId, bikeId, speed, new float[] { 0, -(float)Math.PI / 2f, 0 }, new float[] { 0, 0, 0 }));
+            WriteTextMessage(stream, mainCommand.RouteFollow(routeId, cameraId, speed));
+        }
+        //string routeID, string nodeID, float speedValue, float offsetValue, string rotateValue, float smoothingValue, bool followHeightValue, float[] rotateOffsetVector, float[] positionOffsetVector)
+        private static void Force(NetworkStream stream, string message, string serial, HandleSerial action)
+        {
+            SendMessageAndOnResponse(stream, message, serial,
+                (message) =>
+                {
+                    if (!JSONParser.GetStatus(message))
+                    {
+                        serialResponses.Remove(serial);
+                        Force(stream, message, serial,action);
+                    } else
+                    {
+                        action(message);
+                    }
+                }
+                );
+        }
+    }
+
+    /// <summary>
+    /// struct used to store the host pc name and user
+    /// </summary>
+    public readonly struct PC
+    {
+        public PC(string host, string user)
+        {
+            this.host = host;
+            this.user = user;
+        }
+
+        public string host { get; }
+        public string user { get; }
+
+        public override string ToString()
+        {
+            return "PC - host:" + host + " - user:" + user;
+        }
+    }
+}

RH-Engine/Properties/launchSettings.json

@@ -0,0 +1,8 @@
+{
+  "profiles": {
+    "RH-Engine": {
+      "commandName": "Project",
+      "nativeDebugging": true
+    }
+  }
+}

RH-Engine/RH-Engine.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>RH_Engine</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="LibNoise" Version="0.2.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+  </ItemGroup>
+
+</Project>

RH-Engine/RH-Engine.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30503.244
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RH-Engine", "RH-Engine.csproj", "{12E8F82B-C464-4152-B4FB-FCB5E1A9FCFA}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{12E8F82B-C464-4152-B4FB-FCB5E1A9FCFA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{12E8F82B-C464-4152-B4FB-FCB5E1A9FCFA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{12E8F82B-C464-4152-B4FB-FCB5E1A9FCFA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{12E8F82B-C464-4152-B4FB-FCB5E1A9FCFA}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {C75B8E99-BE3D-496F-B2F0-03C4069493B2}
+	EndGlobalSection
+EndGlobal

RH-Engine/ServerResponseReader.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+
+namespace RH_Engine
+{
+    public delegate void OnResponse(string response);
+
+    public class ServerResponseReader
+    {
+        private bool running;
+        private Thread t;
+        public OnResponse callback
+        {
+            get; set;
+        }
+
+        public NetworkStream Stream { get; }
+
+        public ServerResponseReader(NetworkStream stream)
+        {
+            this.Stream = stream;
+        }
+
+        public void StartRead()
+        {
+            t = new Thread(() =>
+            {
+                if (this.callback == null)
+                {
+                    throw new Exception("Callback not initialized!");
+                }
+                else
+                {
+                    running = true;
+                    Console.WriteLine("[SERVERRESPONSEREADER] Starting loop for reading");
+                    while (running)
+                    {
+                        string res = ReadPrefMessage(Stream);
+                        //Console.WriteLine("[SERVERRESPONSEREADER] got message from server: " + res);
+                        this.callback(res);
+                    }
+                }
+            });
+
+            t.Start();
+        }
+
+        public void Stop()
+        {
+            running = false;
+            t.Join();
+            Stream.Close();
+        }
+
+        /// <summary>
+        /// reads a response from the server
+        /// </summary>
+        /// <param name="stream">the network stream to use</param>
+        /// <returns>the returned message from the server</returns>
+        public static string ReadPrefMessage(NetworkStream stream)
+        {
+            byte[] lengthBytes = new byte[4];
+
+            int streamread = stream.Read(lengthBytes, 0, 4);
+            //Console.WriteLine("read message.. " + streamread);
+
+            int length = BitConverter.ToInt32(lengthBytes);
+
+            //Console.WriteLine("length is: " + length);
+
+            byte[] buffer = new byte[length];
+            int totalRead = 0;
+
+            //read bytes until stream indicates there are no more
+            do
+            {
+                int read = stream.Read(buffer, totalRead, buffer.Length - totalRead);
+                totalRead += read;
+                //Console.WriteLine("ReadMessage: " + read);
+            } while (totalRead < length);
+
+            return Encoding.UTF8.GetString(buffer, 0, totalRead);
+        }
+    }
+}

Server/Client.cs

@@ -0,0 +1,227 @@
+using System;
+using System.IO;
+using System.Net.Sockets;
+using System.Text;
+using Newtonsoft.Json;
+using ClientApp.Utils;
+
+namespace Server
+{
+    class Client
+    {
+        private Communication communication;
+        private TcpClient tcpClient;
+        private NetworkStream stream;
+        private byte[] buffer = new byte[1024];
+        private byte[] totalBuffer = new byte[1024];
+        private int totalBufferReceived = 0;
+        private SaveData saveData;
+        private string username = null;
+        private DateTime sessionStart;
+        private string fileName;
+
+
+
+        public string Username { get; set; }
+
+        public Client(Communication communication, TcpClient tcpClient)
+        {
+            this.sessionStart = DateTime.Now;
+            this.communication = communication;
+            this.tcpClient = tcpClient;
+            this.stream = this.tcpClient.GetStream();
+            this.fileName = Directory.GetCurrentDirectory() + "/userInfo.dat";
+            stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnRead), null);
+        }
+
+        private void OnRead(IAsyncResult ar)
+        {
+            
+            int receivedBytes = this.stream.EndRead(ar);
+
+            if (totalBufferReceived + receivedBytes > 1024)
+            {
+                throw new OutOfMemoryException("buffer too small");
+            }
+            Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, receivedBytes);
+            totalBufferReceived += receivedBytes;
+
+            int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+            while (totalBufferReceived >= expectedMessageLength)
+            {
+                //volledig packet binnen
+                byte[] messageBytes = new byte[expectedMessageLength];
+                Array.Copy(totalBuffer, 0, messageBytes, 0, expectedMessageLength);
+                HandleData(messageBytes);
+
+                Array.Copy(totalBuffer, expectedMessageLength, totalBuffer, 0, (totalBufferReceived - expectedMessageLength)); //maybe unsafe idk 
+
+                totalBufferReceived -= expectedMessageLength;
+                expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
+                if (expectedMessageLength <= 5)
+                {
+                    break;
+                }
+            }
+
+            this.stream.BeginRead(this.buffer, 0, this.buffer.Length, new AsyncCallback(OnRead), null);
+
+        }
+
+        private void OnWrite(IAsyncResult ar)
+        {
+            this.stream.EndWrite(ar);
+        }
+
+
+        /// <summary>
+        /// handles all incoming data from the client
+        /// </summary>
+        /// <param name="message">including message length and messageId (can be changed)</param>
+        private void HandleData(byte[] message)
+        {
+            //Console.WriteLine("Data " + packet);
+            //JsonConvert.DeserializeObject(packet);
+            //0x01 Json
+            //0x01 Raw data
+
+            byte[] payloadbytes = new byte[BitConverter.ToInt32(message, 0) - 5];
+
+            Array.Copy(message, 5, payloadbytes, 0, payloadbytes.Length);
+
+            string identifier;
+            bool isJson = DataParser.getJsonIdentifier(message, out identifier);
+            if (isJson)
+            {
+                switch (identifier)
+                {
+                    case DataParser.LOGIN:
+                        string username;
+                        string password;
+                        bool worked = DataParser.GetUsernamePassword(payloadbytes, out username, out password);
+                        if (worked)
+                        {
+                            if (verifyLogin(username, password))
+                            {
+                                Console.WriteLine("Log in");
+                                this.username = username;
+                                sendMessage(DataParser.getLoginResponse("OK"));
+                                sendMessage(DataParser.getStartSessionJson());
+                            }
+                            else
+                            {
+                                sendMessage(DataParser.getLoginResponse("wrong username or password"));
+                            }
+                        }
+                        else
+                        {
+                            sendMessage(DataParser.getLoginResponse("invalid json"));
+                        }
+                        break;
+                    case DataParser.START_SESSION:
+                        this.saveData = new SaveData(Directory.GetCurrentDirectory() + "/" + this.username + "/" + sessionStart.ToString("yyyy-MM-dd HH-mm-ss"));
+                        break;
+                    case DataParser.STOP_SESSION:
+                        this.saveData = null;
+                        break;
+                    case DataParser.SET_RESISTANCE:
+                        worked = DataParser.getResistanceFromResponseJson(payloadbytes);
+                        Console.WriteLine($"set resistance worked is " + worked);
+                        //set resistance on doctor GUI
+                        break;
+                    default:
+                        Console.WriteLine($"Received json with identifier {identifier}:\n{Encoding.ASCII.GetString(payloadbytes)}");
+                        break;
+                }
+                saveData?.WriteDataJSON(Encoding.ASCII.GetString(payloadbytes));
+
+                Array.Copy(message, 5, payloadbytes, 0, message.Length - 5);
+                dynamic json = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(payloadbytes));
+
+            }
+            else if (DataParser.isRawData(message))
+            {
+                // print the raw data
+                Console.WriteLine(BitConverter.ToString(payloadbytes));
+                // TODO change, checking for length is not that safe
+                if (payloadbytes.Length == 8)
+                {
+                    saveData?.WriteDataRAWBike(payloadbytes);
+                }
+                else if (payloadbytes.Length == 2)
+                {
+                    saveData?.WriteDataRAWBPM(payloadbytes);
+                }
+                else
+                {
+                    Console.WriteLine("received raw data with weird lenght " + BitConverter.ToString(payloadbytes));
+                }
+            }
+
+
+        }
+
+        public void sendMessage(byte[] message)
+        {
+            stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWrite), null);
+        }
+
+        private bool verifyLogin(string username, string password)
+        {
+
+
+            if (!File.Exists(fileName))
+            {
+                File.Create(fileName);
+                Console.WriteLine("file doesnt exist");
+                newUsers(username, password);
+                Console.WriteLine("true");
+                return true;
+            }
+            else
+            {
+                Console.WriteLine("file exists, located at " + Path.GetFullPath(fileName));
+                string[] usernamesPasswords = File.ReadAllLines(fileName);
+                if (usernamesPasswords.Length == 0)
+                {
+                    newUsers(username, password);
+                    return true;
+                }
+
+                foreach (string s in usernamesPasswords)
+                {
+                    string[] combo = s.Split(" ");
+                    if (combo[0] == username)
+                    {
+                        Console.WriteLine("correct info");
+                        return combo[1] == password;
+                    }
+
+                }
+                Console.WriteLine("combo was not found in file");
+
+            }
+            Console.WriteLine("false");
+            return false;
+
+        }
+
+        private void newUsers(string username, string password)
+        {
+
+            Console.WriteLine("creating new entry in file");
+            using (StreamWriter sw = File.AppendText(fileName))
+            {
+                sw.WriteLine(username + " " + password);
+            }
+        }
+
+        public static string ByteArrayToString(byte[] ba)
+        {
+            StringBuilder hex = new StringBuilder(ba.Length * 2);
+            foreach (byte b in ba)
+                hex.AppendFormat("{0:x2}", b);
+            return hex.ToString();
+        }
+    }
+}

Server/Communication.cs

@@ -0,0 +1,56 @@
+using ClientApp;
+using ClientApp.Utils;
+using System;
+using System.Collections.Generic;
+using System.IO.Pipes;
+using System.Linq;
+using System.Net.Sockets;
+using System.Text;
+
+namespace Server
+{
+    class Communication
+    {
+        private TcpListener listener;
+        private List<Client> clients;
+        private Client doctor;
+
+        public Communication(TcpListener listener)
+        {
+            this.listener = listener;
+            this.clients = new List<Client>();
+        }
+
+        public void Start()
+        {
+            listener.Start();
+            Console.WriteLine($"==========================================================================\n" +
+                $"\tstarted accepting clients at {DateTime.Now}\n" +
+                $"==========================================================================");
+            listener.BeginAcceptTcpClient(new AsyncCallback(OnConnect), null);
+        }
+
+        private void OnConnect(IAsyncResult ar)
+        {
+            
+            var tcpClient = listener.EndAcceptTcpClient(ar);
+            Console.WriteLine($"Client connected from {tcpClient.Client.RemoteEndPoint}");
+            clients.Add(new Client(this, tcpClient));
+            if (doctor == null)
+            {
+                doctor = clients.ElementAt(0);
+            }
+            else
+            {
+
+                doctor.sendMessage(DataParser.getLoginResponse("new client"));
+            }
+            listener.BeginAcceptTcpClient(new AsyncCallback(OnConnect), null);
+        }
+
+        internal void Disconnect(Client client)
+        {
+            clients.Remove(client);
+        }
+    }
+}

Server/Program.cs

@@ -0,0 +1,19 @@
+using System.Net;
+using System.Net.Sockets;
+
+namespace Server
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Communication communication = new Communication(new TcpListener(IPAddress.Any, 5555));
+            communication.Start();
+
+            while (true)
+            {
+
+            }
+        }
+    }
+}

Server/SaveData.cs

@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Threading;
+
+namespace Server
+{
+    class SaveData
+    {
+        private string path;
+        private const string jsonFilename = "/json.txt";
+        private const string rawBikeFilename = "/rawBike.bin";
+        private const string rawBPMFilename = "/rawBPM.bin";
+        public SaveData(string path)
+        {
+            this.path = path;
+            if (!Directory.Exists(path))
+            {
+                Directory.CreateDirectory(path);
+            }
+        }
+
+        /// <summary>
+        ///  Every line is a new data entry
+        /// </summary>
+
+        public void WriteDataJSON(string data)
+        {
+            using (StreamWriter sw = File.AppendText(this.path + jsonFilename))
+            {
+                sw.WriteLine(data);
+            }
+        }
+
+        public void WriteDataRAWBPM(byte[] data)
+        {
+            if (data.Length != 2)
+            {
+                throw new ArgumentException("data should have length of 2");
+            }
+            WriteRawData(data, this.path + rawBPMFilename);
+        }
+
+        public void WriteDataRAWBike(byte[] data)
+        {
+            if (data.Length != 8)
+            {
+                throw new ArgumentException("data should have length of 8");
+            }
+            WriteRawData(data, this.path + rawBikeFilename);
+        }
+
+        private void WriteRawData(byte[] data, string fileLocation)
+        {
+            int length = 0;
+            try
+            {
+                FileInfo fi = new FileInfo(fileLocation);
+                length = (int)fi.Length;
+            }
+            catch
+            {
+                // do nothing
+            }
+            using (var fileStream = new FileStream(fileLocation, FileMode.Append, FileAccess.Write, FileShare.None))
+            using (var bw = new BinaryWriter(fileStream))
+            {
+                //sw.BaseStream.Seek(length, SeekOrigin.Begin);
+                bw.Write(data);
+                bw.Flush();
+                //Console.WriteLine("wrote at " + bw.BaseStream.Position);
+            }
+            //using (BinaryReader binaryReader = new BinaryReader(File.Open(fileLocation, FileMode.Open)))
+            //{
+            //    byte[] totalArray = new byte[binaryReader.BaseStream.Length];
+            //    binaryReader.BaseStream.Read(totalArray, 0, (int)binaryReader.BaseStream.Length);
+            //    Console.WriteLine("all data is " + BitConverter.ToString(totalArray));
+            //}
+        }
+
+        /// <summary>
+        /// gets BPM graph data out of file.
+        /// if you want 100 datapoints but here are onlny 50, de last 50 datapoint will be 0
+        /// if you want 100 datapoints where it takes the average of 2, the last 75 will be 0
+        /// if the file isn't created yet it will retun null
+        /// </summary>
+        /// <param name="outputSize">the amount of data points for the output</param>
+        /// <param name="averageOver">the amount of data points form the file for one data point in the output</param>
+        /// <returns>byte array with data points from file</returns>
+        public byte[] getBPMgraphData(int outputSize, int averageOver)
+        {
+            if (File.Exists(this.path + rawBPMFilename))
+            {
+                FileInfo fi = new FileInfo(this.path + rawBPMFilename);
+                int length = (int)fi.Length;
+                //Console.WriteLine("length " + length);
+
+                byte[] output = new byte[outputSize];
+
+                int messageSize = 2;
+                int readSize = messageSize * averageOver;
+                byte[] readBuffer = new byte[readSize];
+
+                using (BinaryReader binaryReader = new BinaryReader(File.Open(this.path + rawBPMFilename, FileMode.Open)))
+                {
+                    //byte[] totalArray = new byte[binaryReader.BaseStream.Length];
+                    //binaryReader.BaseStream.Read(totalArray, 0, (int)binaryReader.BaseStream.Length);
+                    //Console.WriteLine("all data is " + BitConverter.ToString(totalArray));
+                    for (int i = 1; i <= outputSize; i++)
+                    {
+                        if (length - (i * readSize) < 0)
+                        {
+                            break;
+                        }
+                        binaryReader.BaseStream.Seek(length - (i * readSize), SeekOrigin.Begin);
+                        binaryReader.BaseStream.Read(readBuffer, 0, readSize);
+                        //Console.WriteLine("read " + binaryReader.BaseStream.Position + " and size " + readSize + " with value " + BitConverter.ToString(readBuffer));
+
+                        //handling data
+                        int total = 0;
+                        for (int j = 0; j < averageOver; j++)
+                        {
+                            total += readBuffer[j * messageSize + 1];
+                        }
+                        output[i - 1] = (byte)(total / averageOver);
+                    }
+                }
+
+                return output;
+            }
+            else
+            {
+                return null;
+            }
+        }
+
+
+    }
+}

Server/Server.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<OutputType>Exe</OutputType>
+		<TargetFramework>netcoreapp3.1</TargetFramework>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\ClientApp\ClientApp.csproj" />
+	</ItemGroup>
+
+	<Import Project="..\Hashing\Hashing.projitems" Label="Shared" />
+
+</Project>