redef fun close
	do
		var file = _file
		if file == null then return
		if file.address_is_null then
			if last_error != null then return
			last_error = new IOError("Cannot close unopened file")
			return
		end
		var i = file.io_close
		if i != 0 then
			last_error = new IOError("Close failed due to error {sys.errno.strerror}")
		end
		_file = null
	end

	redef fun close do origin.close

	redef fun close do closed = true

	redef fun close do bytes = new Bytes.empty

	# Close this connection if possible, otherwise mark it to be closed later
	redef fun close
	do
		if closed then return

		var i = native_buffer_event.input_buffer
		var o = native_buffer_event.output_buffer
		if i.length > 0 or o.length > 0 then
			close_requested = true
		else
			force_close
		end
	end

	redef fun close
	do
		super
		_is_writable = false
	end

	redef fun close
	do
		source = ""
		super
	end

	redef fun close do stream_in.close

	redef fun close do stream_out.close

	redef fun close
	do
		while stream != null do
			stream.close
			stream = null
		end
	end

	redef fun close
	do
		for i in _streams
		do
			stream = i
			stream.close
		end
	end

	redef fun close
	do
		stream_in.close
		stream_out.close
	end

	redef fun close
	do
		if closed then return
		if native.close >= 0 then
			closed = true
		end
	end

	# Disconnect from a client
	redef fun close do
		origin.close
		closed = true
	end