Module: Cute::Network

Defined in:
lib/cute/net.rb

Class Method Summary collapse

Class Method Details

.port_open?(ip, port) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cute/net.rb', line 5

def Network::port_open?(ip, port)
  begin
    s = TCPSocket.new(ip, port)
    s.close
    return true
  rescue Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ETIMEDOUT
    return false
  end
end

.wait_open_port(host, port, timeout = 120) ⇒ Object 



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# File 'lib/cute/net.rb', line 15

def Network::wait_open_port(host, port, timeout = 120)
  now = -> { return Time.now.to_f }
  bound = now.call + timeout
  while now.call < bound do
    t = now.call
    return true if port_open?(host, port)
    dt = now.call - t
    sleep(0.5 - dt) if dt < 0.5
  end
  return false
end