ms

function connect()
  rednet.open("left")
  return true
end

if connect() == true then
  term.setBackgroundColor(colors.white)
  term.setTextColor(colors.gray)
  term.setCursorPos(1, 1)
  term.clear()
  id = os.computerID()
  print("Your id: "..id.." Input text message.")
  idR1, messageR1 = rednet.receive(5)
    if idR1 ~= nil then
      print(idR1..": "..messageR1)
  end

  while true do
    write(id..": ")
    message = read()
    rednet.broadcast(message)
    idR, messageR = rednet.receive()
    print(idR..": "..messageR)
  end
end