class Async::HTTP::Body::Slowloris

def write(chunk)

If #read is called regularly to maintain throughput, that is good. If #read is not called, that is a problem. Throughput is dependent on data being available, from #write, so it doesn't seem particularly problimatic to do this check in #write. 
def write(chunk)
	if @last_chunk_size
		time_since_last_write = Async::Clock.now - @last_write_at
		throughput = @last_chunk_size / time_since_last_write
		
		if throughput < @minimum_throughput
			error = ThroughputError.new(throughput, @minimum_throughput, time_since_last_write)
			
			self.close(error)
		end
	end
	
	super.tap do
		@last_write_at = Async::Clock.now
		@last_chunk_size = chunk&.bytesize
	end
end