Python frame.DataFrame类代码示例

        def socket_handler(listener):
            sock = listener.accept()[0]

            # Do the handshake: conn header, settings, send settings, recv ack.
            receive_preamble(sock)

            # Now expect some data. One headers frame.
            data.append(sock.recv(65535))

            # Respond!
            h = HeadersFrame(1)
            h.data = self.get_encoder().encode(
                [
                    (':status', 200),
                    ('content-type', 'not/real'),
                    ('content-length', 20),
                ]
            )
            h.flags.add('END_HEADERS')
            sock.send(h.serialize())
            d = DataFrame(1)
            d.data = b'1234567890' * 2
            d.flags.add('END_STREAM')
            sock.send(d.serialize())

            send_event.wait(5)
            sock.close()

    def test_data_frame_with_padding_calculates_flow_control_len(self):
        f = DataFrame(1)
        f.flags = set(['PADDED'])
        f.data = b'testdata'
        f.pad_length = 10

        assert f.flow_controlled_length == 19

    def test_data_frame_serializes_properly(self):
        f = DataFrame(1)
        f.flags = set(['END_STREAM'])
        f.data = b'testdata'

        s = f.serialize()
        assert s == self.payload

    def test_data_frame_with_padding_serializes_properly(self):
        f = DataFrame(1)
        f.flags = set(['END_STREAM', 'PADDED'])
        f.data = b'testdata'
        f.pad_length = 10

        s = f.serialize()
        assert s == self.payload_with_padding

    def test_data_frame_with_no_length_parses(self):
        # Fixes issue with empty data frames raising InvalidPaddingError.
        f = DataFrame(1)
        f.data = b''
        data = f.serialize()

        new_frame = decode_frame(data)
        assert new_frame.data == b''

 def build_data_frame(self, data, flags=None, stream_id=1):
     """
     Builds a single data frame out of a chunk of data.
     """
     flags = set(flags) if flags is not None else set()
     f = DataFrame(stream_id)
     f.data = data
     f.flags = flags
     return f

    def test_body_length_behaves_correctly(self):
        f = DataFrame(1)

        f.data = b'\x01' * 300

        # Initially the body length is zero. For now this is incidental, but
        # I'm going to test it to ensure that the behaviour is codified. We
        # should change this test if we change that.
        assert f.body_len == 0

        data = f.serialize()
        assert f.body_len == 300

    def test_incrementing_window_after_close(self):
        """
        Hyper does not attempt to increment the flow control window once the
        stream is closed.
        """
        # For this test, we want to send a response that has three frames at
        # the default max frame size (16,384 bytes). That will, on the third
        # frame, trigger the processing to increment the flow control window,
        # which should then not happen.
        f = SettingsFrame(0, settings={h2.settings.INITIAL_WINDOW_SIZE: 100})

        c = HTTP20Connection('www.google.com')
        c._sock = DummySocket()
        c._sock.buffer = BytesIO(f.serialize())

        # Open stream 1.
        c.request('GET', '/')

        # Check what data we've sent right now.
        originally_sent_data = c._sock.queue[:]

        # Swap out the buffer to get a GoAway frame.
        length = 16384
        total_length = (3 * 16384) + len(b'some more data')
        e = Encoder()
        h1 = HeadersFrame(1)
        h1.data = e.encode(
            [(':status', 200), ('content-length', '%d' % total_length)]
        )
        h1.flags |= set(['END_HEADERS'])

        d1 = DataFrame(1)
        d1.data = b'\x00' * length
        d2 = d1
        d3 = d1
        d4 = DataFrame(1)
        d4.data = b'some more data'
        d4.flags |= set(['END_STREAM'])

        buffer = BytesIO(
            b''.join(f.serialize() for f in [h1, d1, d2, d3, d4])
        )
        c._sock.buffer = buffer

        # Read the response
        resp = c.get_response(stream_id=1)
        assert resp.status == 200
        assert resp.read() == b''.join(
            [b'\x00' * (3 * length), b'some more data']
        )

        # We should have sent only one extra frame
        assert len(originally_sent_data) + 1 == len(c._sock.queue)

    def build_data_frame(self, data, flags=None, stream_id=1, padding_len=0):
        """
        Builds a single data frame out of a chunk of data.
        """
        flags = set(flags) if flags is not None else set()
        f = DataFrame(stream_id)
        f.data = data
        f.flags = flags

        if padding_len:
            flags.add('PADDED')
            f.pad_length = padding_len

        return f

    def test_long_data_frame(self):
        f = DataFrame(1)

        # Use more than 256 bytes of data to force setting higher bits.
        f.data = b'\x01' * 300
        data = f.serialize()

        # The top three bytes should be numerically equal to 300. That means
        # they should read 00 01 2C.
        # The weird double index trick is to ensure this test behaves equally
        # on Python 2 and Python 3.
        assert data[0] == b'\x00'[0]
        assert data[1] == b'\x01'[0]
        assert data[2] == b'\x2C'[0]

    def test_connection_window_increments_appropriately(self, frame_buffer):
        e = Encoder()
        h = HeadersFrame(1)
        h.data = e.encode([(':status', 200), ('content-type', 'foo/bar')])
        h.flags = set(['END_HEADERS'])
        d = DataFrame(1)
        d.data = b'hi there sir'
        d2 = DataFrame(1)
        d2.data = b'hi there sir again'
        d2.flags = set(['END_STREAM'])
        sock = DummySocket()
        sock.buffer = BytesIO(h.serialize() + d.serialize() + d2.serialize())

        c = HTTP20Connection('www.google.com')
        c._sock = sock
        c.window_manager.window_size = 1000
        c.window_manager.initial_window_size = 1000
        c.request('GET', '/')
        resp = c.get_response()
        resp.read()

        frame_buffer.add_data(b''.join(sock.queue))
        queue = list(frame_buffer)
        assert len(queue) == 3  # one headers frame, two window update frames.
        assert isinstance(queue[1], WindowUpdateFrame)
        assert queue[1].window_increment == len(b'hi there sir')
        assert isinstance(queue[2], WindowUpdateFrame)
        assert queue[2].window_increment == len(b'hi there sir again')

    def send_data(self, data, end_stream=False):
        """
        Prepare some data frames. Optionally end the stream.

        .. warning:: Does not perform flow control checks.
        """
        self.state_machine.process_input(StreamInputs.SEND_DATA)

        df = DataFrame(self.stream_id)
        df.data = data
        if end_stream:
            self.state_machine.process_input(StreamInputs.SEND_END_STREAM)
            df.flags.add('END_STREAM')

        self.outbound_flow_control_window -= len(data)
        assert self.outbound_flow_control_window >= 0

        return [df]

    def write_raw_data_frame(self, data, stream_id=None, end_stream=False):
        """
        Ignores the statemachine of the stream and sends a DATA frame regardless.

        Unlike `write_data`, this does not check to see if a stream is in the correct state to have DATA frames
        sent through to it. It will build a DATA frame and send it without using the H2 Connection object. It will
        not perform any flow control checks.

        :param data: The data to be sent in the frame
        :param stream_id: Id of stream to send frame on. Will use the request stream ID if None
        :param end_stream: Set to True to add END_STREAM flag to frame
        """
        if not stream_id:
            stream_id = self.request.h2_stream_id

        frame = DataFrame(stream_id, data=data)

        if end_stream:
            self.stream_ended = True
            frame.flags.add('END_STREAM')

        data = frame.serialize()
        self.write_raw(data)

 def add_data_frame(self, stream_id, data, end_stream=False):
     frame = DataFrame(stream_id)
     frame.data = data
     if end_stream:
         frame.flags.add('END_STREAM')
     self.frames.append(frame)

    def test_data_frame_without_padding_calculates_flow_control_len(self):
        f = DataFrame(1)
        f.data = b'testdata'

        assert f.flow_controlled_length == 8