что не нравится то валидатору???
package com.javarush.task.task30.task3008;
import javax.imageio.IIOException;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import static com.javarush.task.task30.task3008.MessageType.*;
public class Server {
private static Map<String, Connection> connectionMap = new ConcurrentHashMap<>();
public static void sendBroadcastMessage(Message message) {
for (Map.Entry<String, Connection> c : connectionMap.entrySet()) {
try {
c.getValue().send(message);
} catch (IOException e) {
System.out.println("сообщение не отправлено!");
}
}
}
private static class Handler extends Thread{
private Socket socket;
public Handler(Socket socket) {
this.socket = socket;
}
private String serverHandshake(Connection connection) throws IOException, ClassNotFoundException{
while (true) {
connection.send(new Message(MessageType.NAME_REQUEST));
Message message = connection.receive();
if (message.getType() != MessageType.USER_NAME) {
continue;
}
if (message.getData().isEmpty()) {
continue;
}
if (connectionMap.containsKey(message.getData())) {
continue;
}
connectionMap.put(message.getData(), connection);
connection.send(new Message(MessageType.NAME_ACCEPTED));
return message.getData();
}
}
private void notifyUsers(Connection connection, String userName) throws IOException {
for (Map.Entry<String, Connection> c : connectionMap.entrySet()) {
if (!c.getKey().equals(userName)){
connection.send(new Message(USER_ADDED, c.getKey()));
}
}
}
private void serverMainLoop(Connection connection, String userName) throws IOException, ClassNotFoundException {
while (true) {
Message message = connection.receive();
if (message.getType() == MessageType.TEXT) {
Server.sendBroadcastMessage(new Message(TEXT, userName+": "+message.getData()));
} else ConsoleHelper.writeMessage("ошибка!");
}
}
@Override
public void run() {
ConsoleHelper.writeMessage("установлено новое соединение " + socket.getRemoteSocketAddress());
String userName = null;
try {
Connection connection = new Connection(socket);
userName = serverHandshake(connection);
Server.sendBroadcastMessage(new Message(USER_ADDED, userName));
notifyUsers(connection, userName);
serverMainLoop(connection, userName);
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
if (userName != null){
connectionMap.remove(userName);
sendBroadcastMessage(new Message(MessageType.USER_REMOVED, userName));
}
}
}
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(ConsoleHelper.readInt());
System.out.println("Сервер запущен!");
while (true) {
try {
Socket socket = serverSocket.accept();
Thread thread = new Handler(socket);
thread.start();
} catch (Exception e) {
serverSocket.close();
System.out.println("Ошибка соединения!");
break;
}
}
}
}