Makefile

@@ -22,15 +22,13 @@ link-plane:
 	@ln -fs ./plane/boot x-plane;
 
 link-viewTerm:
-	@echo "(4) Compiling VIEW TERMINAL";
+	@echo "(4) Linking VIEW TERMINAL executable";
-	@javac ./viewTerm/**/*;
+	@echo -e "#!/bin/bash\n\njava -jar ./viewTerm/viewTerm.jar;\n" > ./x-viewTerm;
-	@echo -e "#!/bin/bash\n\ncd ./viewTerm/; java ViewTerminal.ViewTerminal;\n" > ./x-viewTerm;
 	@chmod ug+x ./x-viewTerm;
 
 link-ctrlTerm:
-	@echo "(5) Compiling CTRL TERMINAL";
+	@echo "(5) Linking CTRL TERMINAL executable";
-	@javac ./ctrlTerm/**/*;
+	@echo -e "#!/bin/bash\n\njava -jar ./ctrlTerm/commandTerm.jar;\n" > ./x-ctrlTerm;
-	@echo -e "#!/bin/bash\n\ncd ./ctrlTerm; java ControlTerminal.ControlTerminal;\n" > ./x-ctrlTerm;
 	@chmod ug+x ./x-ctrlTerm;
 
 
@@ -41,11 +39,9 @@ install: install-sgca install-plane link-sgca link-plane link-viewTerm link-ctrl
 
 
 clean:
-	@rm ./x-sgca;
+	@find ./x-sgca     > /dev/null 2>&1 && rm ./x-sgca     || return 0;
-	@rm ./x-plane;
+	@find ./x-plane    > /dev/null 2>&1 && rm ./x-plane    || return 0;
-	@rm ./x-viewTerm;
+	@find ./x-viewTerm > /dev/null 2>&1 && rm ./x-viewTerm || return 0;
-	@rm ./x-ctrlTerm;
+	@find ./x-ctrlTerm > /dev/null 2>&1 && rm ./x-ctrlTerm || return 0;
 	@make clean --directory=./sgca  > /dev/null;
 	@make clean --directory=./plane > /dev/null;
-	@rm -rf ./viewTerm/**/*;
-	@rm -rf ./ctrlTerm/**/*;

ctrlTerm/src/ControlTerminal/ControlTerminal.java

@@ -0,0 +1,208 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package ControlTerminal;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Scanner;
+
+import DatagramSocket.AsynchronousDatagramSocket;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class ControlTerminal {
+    
+    private final static int SGCA_MULTICAST_PORT = 4446;
+    private final static String SCGA_MULTICAST_ADDRESS = "224.0.0.3";
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args){
+    	System.out.println("\033[2J");
+        
+    	/*
+    	 * Handshake
+    	 */
+    	int port = 0;
+    	String addressString = "0.0.0.0";
+    	
+    	try {
+			DatagramSocket socket = new DatagramSocket();
+			ByteBuffer buf = ByteBuffer.allocate(21);
+			buf.clear();
+			buf.put((byte)(0x05));
+			
+			DatagramPacket payload = new DatagramPacket(buf.array(),buf.array().length,InetAddress.getByName(SCGA_MULTICAST_ADDRESS),SGCA_MULTICAST_PORT);
+			socket.send(payload);
+			
+			socket.receive(payload);
+			
+			buf = ByteBuffer.wrap(payload.getData());
+			if(buf.get() == 5){
+				System.out.println("--Connection request successful");
+				byte address[] = new byte[4];
+				buf = buf.get(address,0,4);
+				InetAddress addressObj = InetAddress.getByAddress(address);
+				addressString = addressObj.getHostAddress();
+				//emulate an unsigned short
+				char cast = buf.getChar();
+				port = (int) cast;
+				System.out.println("----Address : "+addressString);
+				System.out.println("----Port : "+port);
+			}
+			
+    	} catch ( IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+			return;
+		}
+    	
+    	/*
+    	 * Opening final socket
+    	 */
+    	try {
+    		//create all objects
+    		AsynchronousDatagramSocket socket = new AsynchronousDatagramSocket();
+    		PlaneContainer container = new PlaneContainer();
+    		Printer printer = new Printer();
+    		Pinger pinger = new Pinger(socket,InetAddress.getByName(addressString),port);
+    		
+    		//bind them
+    		socket.bindContainer(container);
+    		container.bindPrinter(printer);
+    		container.bindSocket(socket);
+    		printer.bindContainer(container);
+    		
+    		
+    		//send first packet
+    		InetAddress SGCAaddress = InetAddress.getByName(addressString);
+    		DatagramPacket p = new DatagramPacket(new byte[13],13,SGCAaddress,port);
+    		socket.send(p);
+    		System.out.println("First packet sent");
+    		
+    		//send first feedback packet
+    		ByteBuffer buf = ByteBuffer.allocate(27);
+    		buf.put((byte) 0x01);
+    		p = new DatagramPacket(buf.array(),buf.array().length,SGCAaddress,port);
+    		socket.send(p);
+    		System.out.println("Feedback request sent");
+    		
+    		System.out.println("length: "+"aze".getBytes().length);
+    		
+    		//run Pinger
+    		new Thread(pinger).start();
+    		
+    		//now we let the objects do the job
+    		Scanner s = new Scanner(System.in);
+    		int planeNumber;
+    		int data;
+    		Plane plane;
+    		ArrayList<String> keys;
+    		byte flags;
+    		while(true){
+    			
+    			String input = s.nextLine();
+    			if(input.length() == 0){
+    				//if empty line, we send a feedback request
+    				buf = ByteBuffer.allocate(27);
+    	    		buf.put((byte) 0x01);
+    	    		p = new DatagramPacket(buf.array(),buf.array().length,SGCAaddress,port);
+    	    		socket.send(p);
+    	    		System.out.println("Request sent, waiting for response");
+    	    		
+    			}else if(input.equals("u")){
+    				System.out.println("Please enter plane number");
+    				try{
+    					planeNumber = s.nextInt();
+    				}catch(Exception e){
+    					System.out.println("Wrong input please retry");
+    					s.nextLine();
+    					continue;
+    				}
+    				
+    				try{
+    					keys = new ArrayList(container.getMap().keySet());
+            			plane = container.getMap().get(keys.get(planeNumber-1));
+    				}catch(Exception e){
+    					System.out.println("Unknown plane please retry");
+    					s.nextLine();
+    					continue;
+    				}
+        			flags = 0x01;
+        			while(true){
+        				System.out.println("Enter the information you want to update (1: alt,2:cap,3:speed)");
+        				try{
+        					data = s.nextInt();
+        					switch(data){
+                			case 1:
+                				System.out.println("Enter the new altitude");
+                				data = s.nextInt();
+                				plane.setZ(data);
+                				flags = (byte) (flags|0x08);
+                				break;
+                			case 2:
+                				System.out.println("Enter the new cap");
+                				data = s.nextInt();
+                				plane.setCap(data);
+                				flags = (byte) (flags|0x02);
+                				break;
+                			case 3:
+                				System.out.println("Enter the new speed");
+                				data = s.nextInt();
+                				plane.setSpeed(data);
+                				flags = (byte) (flags|0x04);
+                				break;
+        					default:
+        						System.out.println("Wrong input please retry");
+            					s.nextLine();
+        						break;
+        					}
+        				}catch(Exception e){
+        					System.out.println("Wrong input please retry");
+        					s.nextLine();
+        					continue;
+        					
+        				}
+            			System.out.println("Do you want to update more data on this plane (y/n)");
+            			
+            			if(s.next().equals("n")){
+            				break;
+            			}
+        			}
+        			container.setExpectedFlags(flags);
+        			buf = ByteBuffer.allocate(27);
+        			buf.put(flags);
+        			buf.put(plane.toBytes());
+        			p = new DatagramPacket(buf.array(),buf.array().length,SGCAaddress,port);
+        			socket.send(p);
+        			System.out.println("Request sent, waiting for response");
+        			s.nextLine();
+    			}else{
+    				System.out.println("Unknown command, please retry");
+    			}
+    			
+    		}
+
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+        
+    }
+    
+}

ctrlTerm/src/ControlTerminal/InvalidFlagException.java

@@ -0,0 +1,18 @@
+package ControlTerminal;
+
+public class InvalidFlagException extends Exception {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+	
+	public InvalidFlagException(){
+		super();
+	}
+	
+	public InvalidFlagException(String message){
+		super(message);
+	}
+
+}

ctrlTerm/src/ControlTerminal/Pinger.java

@@ -0,0 +1,46 @@
+package ControlTerminal;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.InetAddress;
+import java.nio.ByteBuffer;
+
+import DatagramSocket.AsynchronousDatagramSocket;
+
+public class Pinger implements Runnable{
+	
+	private AsynchronousDatagramSocket socket;
+	private InetAddress addr;
+	private int port;
+
+	public Pinger(AsynchronousDatagramSocket socket,InetAddress addr,int port){
+		this.socket = socket;
+		this.addr = addr;
+		this.port = port;
+	}
+	
+	@Override
+	public void run() {
+		DatagramPacket p;
+		ByteBuffer buf = ByteBuffer.allocate(27);
+		while(true){
+			try {
+				Thread.sleep(8000);
+			} catch (InterruptedException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+			
+			p = new DatagramPacket(buf.array(),buf.array().length,this.addr,this.port);
+			try {
+				this.socket.send(p);
+			} catch (IOException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+			
+		}
+		
+	}
+
+}

ctrlTerm/src/ControlTerminal/Plane.java

@@ -0,0 +1,125 @@
+package ControlTerminal;
+
+import java.io.Serializable;
+import java.nio.ByteBuffer;
+
+public class Plane{
+	
+	private String code;
+	private int x;
+	private int y;
+	private int z;
+	private int cap;
+	private int speed;
+	
+	private boolean isDead;
+	
+	public Plane(String code,int x, int y, int z, int cap, int speed){
+		this.code = code;
+		this.x = x;
+		this.y = y;
+		this.z = z;
+		this.cap = cap;
+		this.speed = speed;
+		this.isDead = false;
+	}
+
+	public String getCode() {
+		return code;
+	}
+
+	public void setCode(String code) {
+		this.code = code;
+	}
+
+	public int getX() {
+		return x;
+	}
+
+	public void setX(int x) {
+		this.x = x;
+	}
+
+	public int getY() {
+		return y;
+	}
+
+	public void setY(int y) {
+		this.y = y;
+	}
+
+	public int getZ() {
+		return z;
+	}
+
+	public void setZ(int z) {
+		this.z = z;
+	}
+
+	public int getCap() {
+		return cap;
+	}
+	
+	public boolean isDead(){
+		return this.isDead;
+	}
+
+	public void setCap(int cap) {
+		this.cap = cap;
+	}
+
+	public int getSpeed() {
+		return speed;
+	}
+
+	public void setSpeed(int speed) {
+		this.speed = speed;
+	}
+	
+	//Die Motherfucker
+	public void die(){
+		this.isDead = true;
+	}
+	
+	public String getLine(int i){
+		switch(i){
+		case 0:
+			return "--------------------------------";
+		case 1:
+			if(this.isDead){
+				return "\033[4;37;41m Code: "+this.code+"\t\t\t|";
+			}else{
+				return "\033[4;37;42m Code: "+this.code+"\t\t\t|";
+			}
+		case 2:
+			return "\033[0m --Coords: {"+this.x+";"+this.y+";"+this.z+"} \t|";
+		case 3:
+			return "\033[0m --Cap: "+this.cap+"\t\t\t|";
+		case 4:
+			if(this.isDead){
+				return "\033[4;37;41m ATTENTION: avion hors ligne\t|\033[0m";
+			}else if(this.speed<300){
+				return "\033[5;37;41m --Speed: "+this.speed+"\t\t\t|\033[0m";
+			}else{
+				return "\033[0m --Speed: "+this.speed+"\t\t\t|";
+			}
+		default:
+				return "";
+		}
+	}
+	
+	public byte[] toBytes(){
+		ByteBuffer buf = ByteBuffer.allocate(26);
+		buf.put(this.code.getBytes());
+		//EOL char
+		buf.put((byte)0);
+		buf.putInt(this.x);
+		buf.putInt(this.y);
+		buf.putInt(this.z);
+		buf.putInt(this.cap);
+		buf.putInt(this.speed);
+		
+		return buf.array();
+	}
+
+}

ctrlTerm/src/ControlTerminal/PlaneContainer.java

@@ -0,0 +1,119 @@
+package ControlTerminal;
+
+import java.net.DatagramPacket;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+import DatagramSocket.AsynchronousDatagramSocket;
+
+public class PlaneContainer {
+
+	private HashMap<String,Plane> map;
+	private AsynchronousDatagramSocket socket;
+	private Printer printer;
+	private byte expectedFlags = 0x01;
+	
+	public PlaneContainer(){
+		this.map = new HashMap<String,Plane>();
+	}
+	
+	public void bindSocket(AsynchronousDatagramSocket s){
+		this.socket = s;
+	}
+	
+	public void bindPrinter(Printer p){
+		this.printer = p;
+	}
+	
+	public void setExpectedFlags(byte flags){
+		this.expectedFlags = flags;
+	}
+	
+	public void notifyReceive() throws InvalidFlagException{
+		DatagramPacket packet = this.socket.synchronousReceive();
+		
+		ByteBuffer buf = ByteBuffer.wrap(packet.getData());
+		
+		byte flag;
+		byte nbrPlane;
+		ArrayList<String> codes;
+		
+		flag = buf.get();
+		nbrPlane = buf.get();
+		
+		codes = new ArrayList<String>(nbrPlane);
+		
+		//System.out.println("Processing "+nbrPlane+" planes");
+		
+		if(this.expectedFlags != flag){
+			if((this.expectedFlags&(byte)0x02) == 2 && (flag&(byte)0x02) != 2){
+				System.out.println("\033[5;37;41m Could not apply cap \033[0m");
+			}
+			if((this.expectedFlags&(byte)0x04) == 4 && (flag&(byte)0x04) != 4){
+				System.out.println("\033[5;37;41m Could not apply speed \033[0m");
+			}
+			if((this.expectedFlags&(byte)0x08) == 8 && (flag&(byte)0x08) != 8){
+				System.out.println("\033[5;37;41m Could not apply alt \033[0m");
+			}
+			System.out.println("\033[5;37;41m One or more fields could not be updated \033[0m");
+			if((flag&(byte)0x10) == 1){
+				System.out.println("\033[5;37;41m Plane crashed gracefully \033[0m");
+			}
+			try {
+				this.expectedFlags = 0x01;
+				Thread.sleep(2000);
+			} catch (InterruptedException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
+		}
+		
+		if(flag == 0){
+			//this is a ping response
+			return;
+		}else if((flag&(byte)0x01) != 1){
+			throw new InvalidFlagException("Flag is not a feedback flag :"+flag);
+		}else{
+			String code;
+			byte rawCode[] = new byte[5];
+			Plane plane;
+			for(int i = 0;i<nbrPlane;i++){
+				//get plane code
+				buf = buf.get(rawCode,0,5);
+				code = new String(rawCode);
+				plane = this.map.get(code);
+				codes.add(code);
+				
+				//remove EOL char
+				buf.get();
+				
+				if(plane != null){
+					//fill the plane
+					plane.setX(buf.getInt());
+					plane.setY(buf.getInt());
+					plane.setZ(buf.getInt());
+					plane.setCap(buf.getInt());
+					plane.setSpeed(buf.getInt());
+				}else{
+					plane = new Plane(code,buf.getInt(),buf.getInt(),buf.getInt(),buf.getInt(),buf.getInt());
+					this.map.put(code, plane);
+				}
+				
+			}
+		}
+		
+		//check for dead planes
+		for(String code : this.map.keySet()){
+			if(!codes.contains(code)){
+				this.map.get(code).die();
+			}
+		}
+		
+		this.printer.notifyReceive();
+	}
+	
+	public HashMap<String,Plane> getMap(){
+		return this.map;
+	}
+}

ctrlTerm/src/ControlTerminal/Printer.java

@@ -0,0 +1,54 @@
+package ControlTerminal;
+
+import java.util.HashMap;
+
+public class Printer {
+
+	private PlaneContainer container;
+	
+	public Printer(){
+		
+	}
+	
+	public void bindContainer(PlaneContainer c){
+		this.container = c;
+	}
+	
+	
+	public void notifyReceive(){
+		System.out.println("\033[2J \033[H");
+		HashMap<String,Plane> map = this.container.getMap();
+		int i = 0;
+		
+		String lines[] = new String[5];
+		for(int k = 0;k<5;k++){
+			lines[k] = "";
+		}
+		
+		if(map.keySet().size() == 0){
+			System.out.println("\033[37;43m No plane connected \033[0m");
+		}else{
+			for(String code : map.keySet()){
+				if(i <= 1){
+					for(int k = 0;k<5;k++){
+						lines[k] += map.get(code).getLine(k);
+					}
+					i++;
+				}else{
+					for(int k = 0;k<5;k++){
+						System.out.println(lines[k]);
+						lines[k] = "";
+					}
+					for(int k = 0;k<5;k++){
+						lines[k] += map.get(code).getLine(k);
+					}
+					i=1;
+				}
+			}
+			for(int k = 0;k<5;k++){
+				System.out.println(lines[k]);
+			}
+		}
+		System.out.println("Please enter your command (ENTER to update data, u to update a plane)");
+	}
+}

ctrlTerm/src/DatagramSocket/AsynchronousDatagramSocket.java

@@ -0,0 +1,89 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package DatagramSocket;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.SocketException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import ControlTerminal.InvalidFlagException;
+import ControlTerminal.PlaneContainer;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class AsynchronousDatagramSocket implements Runnable, AutoCloseable{
+    
+    public final static int MAX_MESSAGE_SIZE = 300;
+    
+    private SynchronizedBuffer<DatagramPacket> buf;
+    private DatagramSocket socket;
+    private PlaneContainer container;
+    
+    public AsynchronousDatagramSocket() throws SocketException{
+        this.buf = new SynchronizedBuffer<>();
+        this.socket = new DatagramSocket();
+        new Thread(this).start();
+    }
+    
+    public AsynchronousDatagramSocket(int port) throws SocketException{
+        this.buf = new SynchronizedBuffer<>();
+        this.socket = new DatagramSocket(port);
+        new Thread(this).start();
+    }
+    
+    public void bindContainer(PlaneContainer c){
+    	this.container = c;
+    }
+    
+    public void send(DatagramPacket dp) throws IOException{
+        this.socket.send(dp);
+    }
+    
+    public boolean asynchronousReceive(DatagramPacket dp){
+        if(this.buf.available() == 0){
+            return false;
+        }else{
+            dp = this.buf.removeElement(false);
+            return true;
+        }
+    }
+    
+    public DatagramPacket synchronousReceive(){
+        return this.buf.removeElement(true);
+    }
+    
+    public boolean available(){
+        return this.buf.available()>0;
+    }
+    
+    @Override
+    public void close(){
+        this.socket.close();
+    }
+
+    @Override
+    public void run() {
+        DatagramPacket packet;
+        while(true){
+        	packet = new DatagramPacket(new byte[MAX_MESSAGE_SIZE],MAX_MESSAGE_SIZE);
+        	try {
+                this.socket.receive(packet);
+                this.buf.addElement(packet);
+                this.container.notifyReceive();
+            } catch (IOException ex) {
+                Logger.getLogger(AsynchronousDatagramSocket.class.getName()).log(Level.SEVERE, null, ex);
+            } catch (InvalidFlagException e) {
+    			System.out.println("\033[01;31m Unexpected flag received \033[0m");
+    		}
+        }
+    }
+}

ctrlTerm/src/DatagramSocket/SynchronizedBuffer.java

@@ -0,0 +1,46 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package DatagramSocket;
+
+import java.util.LinkedList;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class SynchronizedBuffer<T>{
+
+    private LinkedList<T> elements = new LinkedList<T>();
+    
+    public synchronized T removeElement(boolean sync){
+        if(!sync && this.elements.isEmpty()){
+            return null;
+        }
+        
+        while(this.elements.isEmpty()){
+            try {
+                this.wait();
+            } catch (InterruptedException ex) {
+                Logger.getLogger(SynchronizedBuffer.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+        
+        return this.elements.removeFirst();
+    }
+    
+    public synchronized void addElement(T elem){
+        this.elements.add(elem);
+        this.notifyAll();
+    }
+    
+    public synchronized int available(){
+        return this.elements.size();
+    }
+    
+}

viewTerm/src/DatagramSocket/AsynchronousDatagramSocket.java

@@ -0,0 +1,89 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package DatagramSocket;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.SocketException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import ViewTerminal.InvalidFlagException;
+import ViewTerminal.PlaneContainer;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class AsynchronousDatagramSocket implements Runnable, AutoCloseable{
+    
+    public final static int MAX_MESSAGE_SIZE = 300;
+    
+    private SynchronizedBuffer<DatagramPacket> buf;
+    private DatagramSocket socket;
+    private PlaneContainer container;
+    
+    public AsynchronousDatagramSocket() throws SocketException{
+        this.buf = new SynchronizedBuffer<>();
+        this.socket = new DatagramSocket();
+        new Thread(this).start();
+    }
+    
+    public AsynchronousDatagramSocket(int port) throws SocketException{
+        this.buf = new SynchronizedBuffer<>();
+        this.socket = new DatagramSocket(port);
+        new Thread(this).start();
+    }
+    
+    public void bindContainer(PlaneContainer c){
+    	this.container = c;
+    }
+    
+    public void send(DatagramPacket dp) throws IOException{
+        this.socket.send(dp);
+    }
+    
+    public boolean asynchronousReceive(DatagramPacket dp){
+        if(this.buf.available() == 0){
+            return false;
+        }else{
+            dp = this.buf.removeElement(false);
+            return true;
+        }
+    }
+    
+    public DatagramPacket synchronousReceive(){
+        return this.buf.removeElement(true);
+    }
+    
+    public boolean available(){
+        return this.buf.available()>0;
+    }
+    
+    @Override
+    public void close(){
+        this.socket.close();
+    }
+
+    @Override
+    public void run() {
+        DatagramPacket packet;
+        while(true){
+        	packet = new DatagramPacket(new byte[MAX_MESSAGE_SIZE],MAX_MESSAGE_SIZE);
+        	try {
+                this.socket.receive(packet);
+                this.buf.addElement(packet);
+                this.container.notifyReceive();
+            } catch (IOException ex) {
+                Logger.getLogger(AsynchronousDatagramSocket.class.getName()).log(Level.SEVERE, null, ex);
+            } catch (InvalidFlagException e) {
+    			System.out.println("\033[01;31m Unexpected flag received \033[0m");
+    		}
+        }
+    }
+}

viewTerm/src/DatagramSocket/SynchronizedBuffer.java

@@ -0,0 +1,46 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package DatagramSocket;
+
+import java.util.LinkedList;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class SynchronizedBuffer<T>{
+
+    private LinkedList<T> elements = new LinkedList<T>();
+    
+    public synchronized T removeElement(boolean sync){
+        if(!sync && this.elements.isEmpty()){
+            return null;
+        }
+        
+        while(this.elements.isEmpty()){
+            try {
+                this.wait();
+            } catch (InterruptedException ex) {
+                Logger.getLogger(SynchronizedBuffer.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+        
+        return this.elements.removeFirst();
+    }
+    
+    public synchronized void addElement(T elem){
+        this.elements.add(elem);
+        this.notifyAll();
+    }
+    
+    public synchronized int available(){
+        return this.elements.size();
+    }
+    
+}

viewTerm/src/ViewTerminal/InvalidFlagException.java

@@ -0,0 +1,18 @@
+package ViewTerminal;
+
+public class InvalidFlagException extends Exception {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+	
+	public InvalidFlagException(){
+		super();
+	}
+	
+	public InvalidFlagException(String message){
+		super(message);
+	}
+
+}

viewTerm/src/ViewTerminal/Plane.java

@@ -0,0 +1,108 @@
+package ViewTerminal;
+
+public class Plane {
+	
+	private String code;
+	private int x;
+	private int y;
+	private int z;
+	private int cap;
+	private int speed;
+	
+	private boolean isDead;
+	
+	public Plane(String code,int x, int y, int z, int cap, int speed){
+		this.code = code;
+		this.x = x;
+		this.y = y;
+		this.z = z;
+		this.cap = cap;
+		this.speed = speed;
+		this.isDead = false;
+	}
+
+	public String getCode() {
+		return code;
+	}
+
+	public void setCode(String code) {
+		this.code = code;
+	}
+
+	public int getX() {
+		return x;
+	}
+
+	public void setX(int x) {
+		this.x = x;
+	}
+
+	public int getY() {
+		return y;
+	}
+
+	public void setY(int y) {
+		this.y = y;
+	}
+
+	public int getZ() {
+		return z;
+	}
+
+	public void setZ(int z) {
+		this.z = z;
+	}
+
+	public int getCap() {
+		return cap;
+	}
+	
+	public boolean isDead(){
+		return this.isDead;
+	}
+
+	public void setCap(int cap) {
+		this.cap = cap;
+	}
+
+	public int getSpeed() {
+		return speed;
+	}
+
+	public void setSpeed(int speed) {
+		this.speed = speed;
+	}
+	
+	//Die Motherfucker
+	public void die(){
+		this.isDead = true;
+	}
+	
+	public String getLine(int i){
+		switch(i){
+		case 0:
+			return "--------------------------------";
+		case 1:
+			if(this.isDead){
+				return "\033[4;37;41m Code: "+this.code+"\t\t\t|";
+			}else{
+				return "\033[4;37;42m Code: "+this.code+"\t\t\t|";
+			}
+		case 2:
+			return "\033[0m --Coords: {"+this.x+";"+this.y+";"+this.z+"} \t|";
+		case 3:
+			return "\033[0m --Cap: "+this.cap+"\t\t\t|";
+		case 4:
+			if(this.isDead){
+				return "\033[4;37;41m ATTENTION: avion hors ligne\t|\033[0m";
+			}else if(this.speed<300){
+				return "\033[5;37;41m --Speed: "+this.speed+"\t\t\t|\033[0m";
+			}else{
+				return "\033[0m --Speed: "+this.speed+"\t\t\t|";
+			}
+		default:
+				return "";
+		}
+	}
+
+}

viewTerm/src/ViewTerminal/PlaneContainer.java

@@ -0,0 +1,98 @@
+package ViewTerminal;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+import DatagramSocket.AsynchronousDatagramSocket;
+
+public class PlaneContainer {
+
+	private HashMap<String,Plane> map;
+	private AsynchronousDatagramSocket socket;
+	private Printer printer;
+	
+	public PlaneContainer(){
+		this.map = new HashMap<String,Plane>();
+	}
+	
+	public void bindSocket(AsynchronousDatagramSocket s){
+		this.socket = s;
+	}
+	
+	public void bindPrinter(Printer p){
+		this.printer = p;
+	}
+	
+	public void notifyReceive() throws InvalidFlagException{
+		DatagramPacket packet = this.socket.synchronousReceive();
+		ByteBuffer buf = ByteBuffer.allocate(1);
+		buf.put((byte)16);
+		DatagramPacket ping = new DatagramPacket(buf.array(),buf.array().length,packet.getAddress(),packet.getPort());
+		try {
+			this.socket.send(ping);
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		
+		buf = ByteBuffer.wrap(packet.getData());
+		
+		byte flag;
+		byte nbrPlane;
+		ArrayList<String> codes;
+		
+		flag = buf.get();
+		nbrPlane = buf.get();
+		
+		codes = new ArrayList<String>(nbrPlane);
+		
+		//System.out.println("Processing "+nbrPlane+" planes");
+		
+		if(flag != 1){
+			throw new InvalidFlagException("Flag is not a feedback flag :"+flag);
+		}else{
+			String code;
+			byte rawCode[] = new byte[5];
+			Plane plane;
+			for(int i = 0;i<nbrPlane;i++){
+				//get plane code
+				buf = buf.get(rawCode,0,5);
+				code = new String(rawCode);
+				plane = this.map.get(code);
+				codes.add(code);
+				
+				//remove EOL char
+				buf.get();
+				
+				if(plane != null){
+					//fill the plane
+					plane.setX(buf.getInt());
+					plane.setY(buf.getInt());
+					plane.setZ(buf.getInt());
+					plane.setCap(buf.getInt());
+					plane.setSpeed(buf.getInt());
+				}else{
+					plane = new Plane(code,buf.getInt(),buf.getInt(),buf.getInt(),buf.getInt(),buf.getInt());
+					this.map.put(code, plane);
+				}
+				
+			}
+		}
+		
+		//check for dead planes
+		for(String code : this.map.keySet()){
+			if(!codes.contains(code)){
+				this.map.get(code).die();
+			}
+		}
+		
+		this.printer.notifyReceive();
+	}
+	
+	public HashMap<String,Plane> getMap(){
+		return this.map;
+	}
+}

viewTerm/src/ViewTerminal/Printer.java

@@ -0,0 +1,53 @@
+package ViewTerminal;
+
+import java.util.HashMap;
+
+public class Printer {
+
+	private PlaneContainer container;
+	
+	public Printer(){
+		
+	}
+	
+	public void bindContainer(PlaneContainer c){
+		this.container = c;
+	}
+	
+	public void notifyReceive(){
+		System.out.println("\033[2J \033[H");
+		HashMap<String,Plane> map = this.container.getMap();
+		int i = 0;
+		
+		String lines[] = new String[5];
+		for(int k = 0;k<5;k++){
+			lines[k] = "";
+		}
+		
+		if(map.keySet().size() == 0){
+			System.out.println("\033[37;43m Aucun avion connecté au système \033[0m");
+		}else{
+			for(String code : map.keySet()){
+				if(i <= 1){
+					for(int k = 0;k<5;k++){
+						lines[k] += map.get(code).getLine(k);
+					}
+					i++;
+				}else{
+					for(int k = 0;k<5;k++){
+						System.out.println(lines[k]);
+						lines[k] = "";
+					}
+					for(int k = 0;k<5;k++){
+						lines[k] += map.get(code).getLine(k);
+					}
+					i=1;
+				}
+			}
+			for(int k = 0;k<5;k++){
+				System.out.println(lines[k]);
+			}
+		}
+		
+	}
+}

viewTerm/src/ViewTerminal/ViewTerminal.java

@@ -0,0 +1,102 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package ViewTerminal;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+
+import DatagramSocket.AsynchronousDatagramSocket;
+
+/**
+ *
+ * @author lmascaro
+ */
+public class ViewTerminal {
+    
+    private final static int SGCA_MULTICAST_PORT = 4445;
+    private final static String SCGA_MULTICAST_ADDRESS = "224.0.0.2";
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args){
+    	System.out.println("\033[2J");
+        
+    	/*
+    	 * Handshake
+    	 */
+    	int port = 0;
+    	String addressString = "0.0.0.0";
+    	
+    	try {
+			DatagramSocket socket = new DatagramSocket();
+			ByteBuffer buf = ByteBuffer.allocate(21);
+			buf.clear();
+			buf.put((byte)(0x01));
+			
+			DatagramPacket payload = new DatagramPacket(buf.array(),buf.array().length,InetAddress.getByName(SCGA_MULTICAST_ADDRESS),SGCA_MULTICAST_PORT);
+			socket.send(payload);
+			
+			socket.receive(payload);
+			
+			buf = ByteBuffer.wrap(payload.getData());
+			if(buf.get() == 1){
+				System.out.println("--Connection request successful");
+				byte address[] = new byte[4];
+				buf = buf.get(address,0,4);
+				InetAddress addressObj = InetAddress.getByAddress(address);
+				addressString = addressObj.getHostAddress();
+				//emulate an unsigned short
+				char cast = buf.getChar();
+				port = (int) cast;
+				System.out.println("----Address : "+addressString);
+				System.out.println("----Port : "+port);
+			}
+			
+    	} catch ( IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+			return;
+		}
+    	
+    	/*
+    	 * Opening final socket
+    	 */
+    	try {
+    		//create all objects
+    		AsynchronousDatagramSocket socket = new AsynchronousDatagramSocket();
+    		PlaneContainer container = new PlaneContainer();
+    		Printer printer = new Printer();
+    		
+    		//bind them
+    		socket.bindContainer(container);
+    		container.bindPrinter(printer);
+    		container.bindSocket(socket);
+    		printer.bindContainer(container);
+    		
+    		//send first packet
+    		DatagramPacket p = new DatagramPacket(new byte[13],13,InetAddress.getByName(addressString),port);
+    		socket.send(p);
+    		
+    		//now we let the objects do the job
+    		while(true){
+    			
+    		}
+
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+        
+    }
+    
+}