Simple TCP/IP Server that can listen to multiple clients and send messages to all of them

client.rb

# frozen_string_literal: true

require 'socket'

class Client
  def initialize
    @socket = TCPSocket.new('localhost', 2000)
  end

  def next_line
    @socket.gets.chomp
  rescue StandardError => e
    @socket.close
    raise e
  end

  def next_message
    message = ''
    while (line = next_line)
      break if line.empty?

      message += line
    end
    message
  end

  def keep_reading
    while (message = next_message)
      break if message.empty?

      yield message
    end
  rescue StandardError => e
    @socket.close
    raise e
  end
end

c = Client.new

c.keep_reading do |message|
  puts message
end

server.rb

# frozen_string_literal: true

require 'socket'

class Server
  attr_reader :server

  def initialize
    @server = TCPServer.new 2000
    @clients = []

    listen_for_clients
  end

  def start
    loop do
      print 'Enter Message: '
      stuff = gets

      Thread.start(@clients) do |clients|
        clients.each do |client|
          client.puts "#{Time.now} - #{stuff.chomp}"
          client.puts
          client.flush
        end
      end.join
    end
  end

  def listen_for_clients
    Thread.new do
      loop do
        client_socket = @server.accept
        @clients << client_socket
      end
    end
  end
end

Server.new.start