Added scheduled match list broadcast to MatchBrowser

- Changed MatchTable to map ClientAddress to HostGame
- Send match list as HostedGamesRequest to multicast address (239.0.0.1:4941)

#story[1188]

matchBrowser/src/main/java/model/ClientAddress.java

@@ -1,10 +1,10 @@
 package model;
 
-public class ClientAdress {
+public class ClientAddress {
     private String ip;
     private int port;
 
-    public ClientAdress(String ip, int port) {
+    public ClientAddress(String ip, int port) {
         this.ip = ip;
         this.port = port;
     }
@@ -19,19 +19,13 @@ public class ClientAdress {
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        ClientAdress that = (ClientAdress) o;
-
-        if (port != that.port) return false;
-        return ip != null ? ip.equals(that.ip) : that.ip == null;
+        return o != null && o instanceof ClientAddress && hashCode() == o.hashCode();
     }
 
     @Override
     public int hashCode() {
         int result = ip != null ? ip.hashCode() : 0;
-        result = 31 * result + port;
+        result *= 31;
         return result;
     }
 

matchBrowser/src/main/java/model/MatchTable.java

@@ -11,29 +11,17 @@ import java.util.List;
  * Holds a table object that stores current games
  */
 public class MatchTable {
-    private HashMap<TableKey, List> matchTable;
+    private HashMap<ClientAddress, HostGame> matchTable;
 
     public MatchTable() {
-        this.matchTable = new HashMap<TableKey, List>();
+        this.matchTable = new HashMap<>();
     }
 
-    public void addEntry(String ip, int port, HostGame newEntry) {
-        //create a key from the ip and port
-        TableKey entryKey = new TableKey(ip, port);
-
-        //get the rest of the entry and use it as the value
-        List entryItems = new ArrayList();
-        entryItems.add(newEntry.getMap());
-        entryItems.add(newEntry.getSpeed());
-        entryItems.add(newEntry.getStatus());
-        entryItems.add(newEntry.getRequiredNumPlayers());
-        entryItems.add(newEntry.getCurrentNumPlayers());
-
-        this.matchTable.put(entryKey, entryItems);
-
+    public void addEntry(ClientAddress address, HostGame newEntry) {
+        this.matchTable.put(address, newEntry);
     }
 
-    public HashMap<TableKey, List> getMatchTable() {
+    public HashMap<ClientAddress, HostGame> getMatchTable() {
         return matchTable;
     }
 

matchBrowser/src/main/java/networkInterface/NetworkInterface.java

@@ -1,38 +1,52 @@
 package networkInterface;
 
-import model.ClientAdress;
+import model.ClientAddress;
 import model.MatchTable;
 import model.TableKey;
 import network.BinaryMessageDecoder;
+import network.BinaryMessageEncoder;
 import network.Exceptions.InvalidMessageException;
 import network.MessageDecoders.HostGameMessageDecoder;
 import network.MessageDecoders.HostedGamesRequestDecoder;
+import network.MessageEncoders.HostGameMessageEncoder;
+import network.MessageEncoders.HostedGamesRequestEncoder;
+import network.Messages.Enums.MessageType;
+import network.Messages.Enums.RaceStatusEnum;
 import network.Messages.HostGame;
 import network.Messages.HostGamesRequest;
+import network.Messages.RaceStatus;
 
 import java.io.IOException;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
+import java.time.LocalDateTime;
 import java.util.*;
 
 /**
  * Holds the output for the network for
  */
 public class NetworkInterface {
+    private Timer scheduler;
     private DatagramSocket serverSocket;
     private byte[] receiveData = new byte[1024];
-    private byte[] sendData = new byte[1024];
 
-    private Set<ClientAdress> clientsAddresses;
+    private Set<ClientAddress> clientsAddresses;
     private MatchTable matchTable;
 
+    private InetAddress groupAddress;
+    private int groupPort;
+
     public NetworkInterface(){
-        this.clientsAddresses = new HashSet<ClientAdress>();
+        this.clientsAddresses = new HashSet<>();
         this.matchTable = new MatchTable();
+        this.scheduler = new Timer(true);
         try {
+            this.groupAddress = InetAddress.getByName("239.0.0.1");
+            this.groupPort = 4941;
             this.serverSocket = new DatagramSocket(3779);
 
+            startBroadcast(10000);
             this.run();
         } catch (IOException e) {
             System.err.println("Error listening on port: " +  this.serverSocket.getLocalPort() + ".");
@@ -41,29 +55,51 @@ public class NetworkInterface {
 
     }
 
+    private void startBroadcast(int period) {
+        scheduler.scheduleAtFixedRate(new TimerTask() {
+            @Override
+            public void run() {
+                List<HostGame> games = new ArrayList<>();
+
+                for(ClientAddress address: clientsAddresses) {
+                    HostGame game = matchTable.getMatchTable().get(address);
+                    if(game != null) {
+                        games.add(game);
+                    }
+                }
+                HostedGamesRequestEncoder encoder = new HostedGamesRequestEncoder();
+                try {
+                    byte[] message = encoder.encode(new HostGamesRequest(games));
+                    System.out.println(LocalDateTime.now() + ": Sending " + games.size() + " game/s");
+                    serverSocket.send(new DatagramPacket(message, message.length, groupAddress, groupPort));
+                } catch (InvalidMessageException | IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }, period, period);
+    }
+
     private void run() throws IOException{
         while(true) {
             DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
             serverSocket.receive(receivePacket);
 
             BinaryMessageDecoder messageDecoder = new BinaryMessageDecoder(receivePacket.getData());
-            switch (messageDecoder.getHeaderMessageType()){
-                case 108:
+            switch (MessageType.fromByte(messageDecoder.getHeaderMessageType())){
+                case HOST_GAME:
                     //decode and update table
                     HostGameMessageDecoder decoder = new HostGameMessageDecoder();
                     HostGame newKnownGame;
                     try{
                         newKnownGame = (HostGame) decoder.decode(messageDecoder.getMessageBody());
-
-                        this.matchTable.addEntry(receivePacket.getAddress().getHostAddress(), receivePacket.getPort(), newKnownGame);
-                        System.out.println(matchTable);
+                        this.matchTable.addEntry(new ClientAddress(receivePacket.getAddress().getHostAddress(), receivePacket.getPort()), newKnownGame);
 
                     }catch (InvalidMessageException e){
                         System.out.println(e);
                         System.err.println("Message received that is not a hostedGame packet");
                     }
                     break;
-                case 109:
+                case HOSTED_GAMES_REQUEST:
                     //update known clients
                     HostedGamesRequestDecoder decoder2 = new HostedGamesRequestDecoder();
                     HostGamesRequest newKnownGames;
@@ -71,20 +107,14 @@ public class NetworkInterface {
                         newKnownGames = (HostGamesRequest) decoder2.decode(messageDecoder.getMessageBody());
                         if (newKnownGames.getKnownGames().size() == 0){
                             //this is just an alert message with no content
-                            clientsAddresses.add(new ClientAdress(receivePacket.getAddress().getHostAddress(), receivePacket.getPort()));
+                            clientsAddresses.add(new ClientAddress(receivePacket.getAddress().getHostAddress(), receivePacket.getPort()));
                         }
-                        System.out.println("Clients: " + clientsAddresses);
                     }catch (InvalidMessageException e){
                         System.out.println(e);
                         System.err.println("Message received that is not a hostedGamesRequest packet");
                     }
                     break;
             }
-
-
-            //client ip and port
-            InetAddress IPAddress = receivePacket.getAddress();
-            int port = receivePacket.getPort();
         }
     }
 }

matchBrowser/src/test/java/model/MatchTableTest.java

@@ -22,8 +22,8 @@ public class MatchTableTest {
     public void testTable() {
         HostGame entry = new HostGame("127.0.0.1", 4942, (byte)1, (byte)1, RaceStatusEnum.PRESTART, (byte)6, (byte)1);
 
-        testTable.addEntry("127.0.0.1", 3779, entry);
+        testTable.addEntry(new ClientAddress("127.0.0.1", 3779), entry);
 
-        assertEquals(testTable.getMatchTable().get(new TableKey("127.0.0.1", 4942)), Arrays.asList(1, 1, 2, 6, 1));
+        assertEquals(testTable.getMatchTable().get(new ClientAddress("127.0.0.1", 4942)), entry);
     }
 }