## mark a section (Learn more)

require 'socket' HOST = 'localhost' PORT = 4505 server = TCPServer.new(HOST, PORT) # array to store all the active connections sessions = [] while (session = server.accept) # push the current session(socket) in the array sessions << session # initialize a new thead for each connection Thread.new(session) do |local_session| # each time a client sends some data send it to all the connections while(true) data = local_session.gets sessions.each do |s| begin s.puts data rescue Errno::ECONNRESET # an exception is raised, that means the connection to the client is broken sessions.delete(s) end end end end end

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