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Server.java
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Server.java
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import java.net.Socket;
import java.net.ServerSocket;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.InetAddress;
import java.util.ArrayList;
public class Server{
public static ArrayList<ClientHandler> clients = new ArrayList<>();
public static void main(String[] args) {
int port = 6969;
try(ServerSocket socket = new ServerSocket(port)){
System.out.println("Server is listening on port " + port);
while(true){
Socket client = socket.accept();
System.out.println(client.getRemoteSocketAddress()+" is connected!");
ClientHandler handler = new ClientHandler(client);
Thread thread = new Thread(handler);
thread.start();
}
}catch(IOException e){
System.err.println("Server error: " + e.getMessage());
e.printStackTrace();
}
}
private static void broadcast(String msg, ClientHandler sender){
for(ClientHandler client : clients){
if(client != sender)
client.send(msg);
}
}
public static void messagehandler(Message mas){
Message msg = mas;
String name = msg.sender.getName();
ClientHandler client = msg.sender;
switch(mas.type){
case CONNECT:
client.setName();
for(ClientHandler c : clients){
if(c.getName().equals(client.getName())){
client.send("Name already taken!");
client.shutdown();
return;
}
}
clients.add(client);
broadcast(client.getName() +": join the group", mas.sender);
client.send("Welcome to the group buddy!");
break;
case DISCONNECT:
broadcast(name +": left the group", mas.sender);
clients.remove(mas.sender);
client.send("Bye!");
client.shutdown();
break;
case MESSAGE:
broadcast(name +": "+msg.content, mas.sender);
break;
}
}
}