import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class MainClass {
public static void main(String[] args) throws Exception {
int port = 37;
ServerSocket server = new ServerSocket(port);
while (true) {
Socket connection = null;
connection = server.accept();
OutputStream out = connection.getOutputStream();
out.write(123);
out.flush();
connection.close();
}
}
}