main.rb

require "socket"

server = TCPServer.open("127.0.0.1", 50000);

puts "Server is running at 50000."

socket = server.accept();
socket.write("welcome\n");

loop {
  message = socket.gets();
  
  if (message.nil?())
    break;
  end

  puts("socekt: " + message);
  socket.write(message);

}