ruby read with timeout

read_with_timeout.rb

def read_with_timeout(io_like, read_len, timeout)
  timeout_time = Time.now + timeout
  data = ""
  loop do
    begin
      result = io_like.read_nonblock(read_len - data.length)
      puts data
      data += result
      if block_given?
        bd = yield data
        return [:matched, bd] if !bd.nil?
      end
      return [:length, data] if data.length == read_len
    rescue EOFError
      return [:eof, data]
    rescue IO::WaitReadable
      time_remaining = timeout_time - Time.now
      return [:timeout, data] if time_remaining < 0
      IO.select([io_like], nil, nil, time_remaining)
      retry
    rescue IO::WaitWritable
      time_remaining = timeout_time - Time.now
      return [:timeout, data] if time_remaining < 0
      IO.select(nil, [io_like], nil, time_remaining)
      retry
    end
  end
end