Метод main() должен создавать новый объект типа Client и вызывать у него метод run().
public static void main(String[] args) {
//new Client().run();
Client client = new Client();
client.run();
}package com.javarush.task.task30.task3008;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class Server {
private static Map<String, Connection> connectionMap = new ConcurrentHashMap<>();
public static void main(String[] args) {
int port = ConsoleHelper.readInt();
try (ServerSocket serverSocket = new ServerSocket(port)){
System.out.println("Сервер запущен.");
while (true){
Socket socket = serverSocket.accept();
Handler handler = new Handler(socket);
handler.start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
public static void sendBroadcastMessage(Message message){
for(Map.Entry<String, Connection> entry:connectionMap.entrySet()){
try {
entry.getValue().send(message);
} catch (IOException e) {
System.out.println(String.format("Клиенту %s сообщение не отправлено.",entry.getKey()));
}
}
}
private static class Handler extends Thread{
private Socket socket;
public Handler(Socket socket) {
this.socket = socket;
}
@Override
public void run() {
ConsoleHelper.writeMessage("Установлено новое соединение с удаленным адресом: " + socket.getRemoteSocketAddress());
String userName = null;
try (Connection connection = new Connection(socket)){
userName = serverHandshake(connection);
sendBroadcastMessage(new Message(MessageType.USER_ADDED, userName));
notifyUsers(connection,userName);
serverMainLoop(connection,userName);
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}finally {
if(userName!=null){
connectionMap.remove(userName);
sendBroadcastMessage(new Message(MessageType.USER_REMOVED, userName));
ConsoleHelper.writeMessage("Соединение с удаленным адресом закрыто.");
}
}
}
private String serverHandshake(Connection connection) throws IOException, ClassNotFoundException {
Message messageRequest = new Message(MessageType.NAME_REQUEST);
Message messageAnswer;
String name;
while (true) {
connection.send(messageRequest);
messageAnswer = connection.receive();
name = messageAnswer.getData();
if ((messageAnswer.getType() == MessageType.USER_NAME)
&& (!name.isEmpty())
&& (!connectionMap.containsKey(name))) {
connectionMap.put(name, connection);
connection.send(new Message(MessageType.NAME_ACCEPTED));
return name;
}
}
}
private void notifyUsers(Connection connection, String userName)throws IOException{
for(String user:connectionMap.keySet()){
if(!user.equals(userName))connection.send(new Message(MessageType.USER_ADDED,user));
}
}
private void serverMainLoop(Connection connection, String userName) throws IOException, ClassNotFoundException{
while (true) {
Message message = connection.receive();
if (message.getType() == MessageType.TEXT) {
sendBroadcastMessage(new Message(MessageType.TEXT, String.format("%s: %s",userName,message.getData())));
//break;
} else ConsoleHelper.writeMessage("Тип сообщения не текстовый.");
}
}
}
}