import net, nre
var socket = newSocket()
socket.bindAddr(Port(8080))
socket.listen()
echo "Awaiting connection..."

var client = newSocket()
var address = ""
while true:
  socket.acceptAddr(client, address)
  echo("Client connect from: ", address)
  while true:
    var rule = re"[0-9]+(f|F|c|C)"
    var say = ""
    readLine(client, say)
    echo(say.find(rule))
    if (say == ""):
      break
  break