diff options
Diffstat (limited to 'test/http/http2/test_frames.py')
-rw-r--r-- | test/http/http2/test_frames.py | 704 |
1 files changed, 704 insertions, 0 deletions
diff --git a/test/http/http2/test_frames.py b/test/http/http2/test_frames.py new file mode 100644 index 00000000..ee2edc39 --- /dev/null +++ b/test/http/http2/test_frames.py @@ -0,0 +1,704 @@ +import cStringIO +from test import tutils +from nose.tools import assert_equal +from netlib import tcp +from netlib.http.http2.frame import * + + +def hex_to_file(data): + data = data.decode('hex') + return tcp.Reader(cStringIO.StringIO(data)) + + +def test_invalid_flags(): + tutils.raises( + ValueError, + DataFrame, + flags=ContinuationFrame.FLAG_END_HEADERS, + stream_id=0x1234567, + payload='foobar') + + +def test_frame_equality(): + a = DataFrame( + length=6, + flags=Frame.FLAG_END_STREAM, + stream_id=0x1234567, + payload='foobar') + b = DataFrame( + length=6, + flags=Frame.FLAG_END_STREAM, + stream_id=0x1234567, + payload='foobar') + assert_equal(a, b) + + +def test_too_large_frames(): + f = DataFrame( + length=9000, + flags=Frame.FLAG_END_STREAM, + stream_id=0x1234567, + payload='foobar' * 3000) + tutils.raises(FrameSizeError, f.to_bytes) + + +def test_data_frame_to_bytes(): + f = DataFrame( + length=6, + flags=Frame.FLAG_END_STREAM, + stream_id=0x1234567, + payload='foobar') + assert_equal(f.to_bytes().encode('hex'), '000006000101234567666f6f626172') + + f = DataFrame( + length=11, + flags=(Frame.FLAG_END_STREAM | Frame.FLAG_PADDED), + stream_id=0x1234567, + payload='foobar', + pad_length=3) + assert_equal( + f.to_bytes().encode('hex'), + '00000a00090123456703666f6f626172000000') + + f = DataFrame( + length=6, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + payload='foobar') + tutils.raises(ValueError, f.to_bytes) + + +def test_data_frame_from_bytes(): + f = Frame.from_file(hex_to_file('000006000101234567666f6f626172')) + assert isinstance(f, DataFrame) + assert_equal(f.length, 6) + assert_equal(f.TYPE, DataFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_END_STREAM) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.payload, 'foobar') + + f = Frame.from_file(hex_to_file('00000a00090123456703666f6f626172000000')) + assert isinstance(f, DataFrame) + assert_equal(f.length, 10) + assert_equal(f.TYPE, DataFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_END_STREAM | Frame.FLAG_PADDED) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.payload, 'foobar') + + +def test_data_frame_human_readable(): + f = DataFrame( + length=11, + flags=(Frame.FLAG_END_STREAM | Frame.FLAG_PADDED), + stream_id=0x1234567, + payload='foobar', + pad_length=3) + assert f.human_readable() + + +def test_headers_frame_to_bytes(): + f = HeadersFrame( + length=6, + flags=(Frame.FLAG_NO_FLAGS), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex')) + assert_equal(f.to_bytes().encode('hex'), '000007010001234567668594e75e31d9') + + f = HeadersFrame( + length=10, + flags=(HeadersFrame.FLAG_PADDED), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex'), + pad_length=3) + assert_equal( + f.to_bytes().encode('hex'), + '00000b01080123456703668594e75e31d9000000') + + f = HeadersFrame( + length=10, + flags=(HeadersFrame.FLAG_PRIORITY), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex'), + exclusive=True, + stream_dependency=0x7654321, + weight=42) + assert_equal( + f.to_bytes().encode('hex'), + '00000c012001234567876543212a668594e75e31d9') + + f = HeadersFrame( + length=14, + flags=(HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex'), + pad_length=3, + exclusive=True, + stream_dependency=0x7654321, + weight=42) + assert_equal( + f.to_bytes().encode('hex'), + '00001001280123456703876543212a668594e75e31d9000000') + + f = HeadersFrame( + length=14, + flags=(HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex'), + pad_length=3, + exclusive=False, + stream_dependency=0x7654321, + weight=42) + assert_equal( + f.to_bytes().encode('hex'), + '00001001280123456703076543212a668594e75e31d9000000') + + f = HeadersFrame( + length=6, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + header_block_fragment='668594e75e31d9'.decode('hex')) + tutils.raises(ValueError, f.to_bytes) + + +def test_headers_frame_from_bytes(): + f = Frame.from_file(hex_to_file( + '000007010001234567668594e75e31d9')) + assert isinstance(f, HeadersFrame) + assert_equal(f.length, 7) + assert_equal(f.TYPE, HeadersFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, '668594e75e31d9'.decode('hex')) + + f = Frame.from_file(hex_to_file( + '00000b01080123456703668594e75e31d9000000')) + assert isinstance(f, HeadersFrame) + assert_equal(f.length, 11) + assert_equal(f.TYPE, HeadersFrame.TYPE) + assert_equal(f.flags, HeadersFrame.FLAG_PADDED) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, '668594e75e31d9'.decode('hex')) + + f = Frame.from_file(hex_to_file( + '00000c012001234567876543212a668594e75e31d9')) + assert isinstance(f, HeadersFrame) + assert_equal(f.length, 12) + assert_equal(f.TYPE, HeadersFrame.TYPE) + assert_equal(f.flags, HeadersFrame.FLAG_PRIORITY) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, '668594e75e31d9'.decode('hex')) + assert_equal(f.exclusive, True) + assert_equal(f.stream_dependency, 0x7654321) + assert_equal(f.weight, 42) + + f = Frame.from_file(hex_to_file( + '00001001280123456703876543212a668594e75e31d9000000')) + assert isinstance(f, HeadersFrame) + assert_equal(f.length, 16) + assert_equal(f.TYPE, HeadersFrame.TYPE) + assert_equal(f.flags, HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, '668594e75e31d9'.decode('hex')) + assert_equal(f.exclusive, True) + assert_equal(f.stream_dependency, 0x7654321) + assert_equal(f.weight, 42) + + f = Frame.from_file(hex_to_file( + '00001001280123456703076543212a668594e75e31d9000000')) + assert isinstance(f, HeadersFrame) + assert_equal(f.length, 16) + assert_equal(f.TYPE, HeadersFrame.TYPE) + assert_equal(f.flags, HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, '668594e75e31d9'.decode('hex')) + assert_equal(f.exclusive, False) + assert_equal(f.stream_dependency, 0x7654321) + assert_equal(f.weight, 42) + + +def test_headers_frame_human_readable(): + f = HeadersFrame( + length=7, + flags=(HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY), + stream_id=0x1234567, + header_block_fragment=b'', + pad_length=3, + exclusive=False, + stream_dependency=0x7654321, + weight=42) + assert f.human_readable() + + f = HeadersFrame( + length=14, + flags=(HeadersFrame.FLAG_PADDED | HeadersFrame.FLAG_PRIORITY), + stream_id=0x1234567, + header_block_fragment='668594e75e31d9'.decode('hex'), + pad_length=3, + exclusive=False, + stream_dependency=0x7654321, + weight=42) + assert f.human_readable() + + +def test_priority_frame_to_bytes(): + f = PriorityFrame( + length=5, + flags=(Frame.FLAG_NO_FLAGS), + stream_id=0x1234567, + exclusive=True, + stream_dependency=0x7654321, + weight=42) + assert_equal(f.to_bytes().encode('hex'), '000005020001234567876543212a') + + f = PriorityFrame( + length=5, + flags=(Frame.FLAG_NO_FLAGS), + stream_id=0x1234567, + exclusive=False, + stream_dependency=0x7654321, + weight=21) + assert_equal(f.to_bytes().encode('hex'), '0000050200012345670765432115') + + f = PriorityFrame( + length=5, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + stream_dependency=0x1234567) + tutils.raises(ValueError, f.to_bytes) + + f = PriorityFrame( + length=5, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + stream_dependency=0x0) + tutils.raises(ValueError, f.to_bytes) + + +def test_priority_frame_from_bytes(): + f = Frame.from_file(hex_to_file('000005020001234567876543212a')) + assert isinstance(f, PriorityFrame) + assert_equal(f.length, 5) + assert_equal(f.TYPE, PriorityFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.exclusive, True) + assert_equal(f.stream_dependency, 0x7654321) + assert_equal(f.weight, 42) + + f = Frame.from_file(hex_to_file('0000050200012345670765432115')) + assert isinstance(f, PriorityFrame) + assert_equal(f.length, 5) + assert_equal(f.TYPE, PriorityFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.exclusive, False) + assert_equal(f.stream_dependency, 0x7654321) + assert_equal(f.weight, 21) + + +def test_priority_frame_human_readable(): + f = PriorityFrame( + length=5, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + exclusive=False, + stream_dependency=0x7654321, + weight=21) + assert f.human_readable() + + +def test_rst_stream_frame_to_bytes(): + f = RstStreamFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + error_code=0x7654321) + assert_equal(f.to_bytes().encode('hex'), '00000403000123456707654321') + + f = RstStreamFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0) + tutils.raises(ValueError, f.to_bytes) + + +def test_rst_stream_frame_from_bytes(): + f = Frame.from_file(hex_to_file('00000403000123456707654321')) + assert isinstance(f, RstStreamFrame) + assert_equal(f.length, 4) + assert_equal(f.TYPE, RstStreamFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.error_code, 0x07654321) + + +def test_rst_stream_frame_human_readable(): + f = RstStreamFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + error_code=0x7654321) + assert f.human_readable() + + +def test_settings_frame_to_bytes(): + f = SettingsFrame( + length=0, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0) + assert_equal(f.to_bytes().encode('hex'), '000000040000000000') + + f = SettingsFrame( + length=0, + flags=SettingsFrame.FLAG_ACK, + stream_id=0x0) + assert_equal(f.to_bytes().encode('hex'), '000000040100000000') + + f = SettingsFrame( + length=6, + flags=SettingsFrame.FLAG_ACK, + stream_id=0x0, + settings={ + SettingsFrame.SETTINGS.SETTINGS_ENABLE_PUSH: 1}) + assert_equal(f.to_bytes().encode('hex'), '000006040100000000000200000001') + + f = SettingsFrame( + length=12, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + settings={ + SettingsFrame.SETTINGS.SETTINGS_ENABLE_PUSH: 1, + SettingsFrame.SETTINGS.SETTINGS_MAX_CONCURRENT_STREAMS: 0x12345678}) + assert_equal( + f.to_bytes().encode('hex'), + '00000c040000000000000200000001000312345678') + + f = SettingsFrame( + length=0, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567) + tutils.raises(ValueError, f.to_bytes) + + +def test_settings_frame_from_bytes(): + f = Frame.from_file(hex_to_file('000000040000000000')) + assert isinstance(f, SettingsFrame) + assert_equal(f.length, 0) + assert_equal(f.TYPE, SettingsFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + + f = Frame.from_file(hex_to_file('000000040100000000')) + assert isinstance(f, SettingsFrame) + assert_equal(f.length, 0) + assert_equal(f.TYPE, SettingsFrame.TYPE) + assert_equal(f.flags, SettingsFrame.FLAG_ACK) + assert_equal(f.stream_id, 0x0) + + f = Frame.from_file(hex_to_file('000006040100000000000200000001')) + assert isinstance(f, SettingsFrame) + assert_equal(f.length, 6) + assert_equal(f.TYPE, SettingsFrame.TYPE) + assert_equal(f.flags, SettingsFrame.FLAG_ACK, 0x0) + assert_equal(f.stream_id, 0x0) + assert_equal(len(f.settings), 1) + assert_equal(f.settings[SettingsFrame.SETTINGS.SETTINGS_ENABLE_PUSH], 1) + + f = Frame.from_file(hex_to_file( + '00000c040000000000000200000001000312345678')) + assert isinstance(f, SettingsFrame) + assert_equal(f.length, 12) + assert_equal(f.TYPE, SettingsFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + assert_equal(len(f.settings), 2) + assert_equal(f.settings[SettingsFrame.SETTINGS.SETTINGS_ENABLE_PUSH], 1) + assert_equal( + f.settings[ + SettingsFrame.SETTINGS.SETTINGS_MAX_CONCURRENT_STREAMS], + 0x12345678) + + +def test_settings_frame_human_readable(): + f = SettingsFrame( + length=12, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + settings={}) + assert f.human_readable() + + f = SettingsFrame( + length=12, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + settings={ + SettingsFrame.SETTINGS.SETTINGS_ENABLE_PUSH: 1, + SettingsFrame.SETTINGS.SETTINGS_MAX_CONCURRENT_STREAMS: 0x12345678}) + assert f.human_readable() + + +def test_push_promise_frame_to_bytes(): + f = PushPromiseFrame( + length=10, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + promised_stream=0x7654321, + header_block_fragment='foobar') + assert_equal( + f.to_bytes().encode('hex'), + '00000a05000123456707654321666f6f626172') + + f = PushPromiseFrame( + length=14, + flags=HeadersFrame.FLAG_PADDED, + stream_id=0x1234567, + promised_stream=0x7654321, + header_block_fragment='foobar', + pad_length=3) + assert_equal( + f.to_bytes().encode('hex'), + '00000e0508012345670307654321666f6f626172000000') + + f = PushPromiseFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + promised_stream=0x1234567) + tutils.raises(ValueError, f.to_bytes) + + f = PushPromiseFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + promised_stream=0x0) + tutils.raises(ValueError, f.to_bytes) + + +def test_push_promise_frame_from_bytes(): + f = Frame.from_file(hex_to_file('00000a05000123456707654321666f6f626172')) + assert isinstance(f, PushPromiseFrame) + assert_equal(f.length, 10) + assert_equal(f.TYPE, PushPromiseFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, 'foobar') + + f = Frame.from_file(hex_to_file( + '00000e0508012345670307654321666f6f626172000000')) + assert isinstance(f, PushPromiseFrame) + assert_equal(f.length, 14) + assert_equal(f.TYPE, PushPromiseFrame.TYPE) + assert_equal(f.flags, PushPromiseFrame.FLAG_PADDED) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, 'foobar') + + +def test_push_promise_frame_human_readable(): + f = PushPromiseFrame( + length=14, + flags=HeadersFrame.FLAG_PADDED, + stream_id=0x1234567, + promised_stream=0x7654321, + header_block_fragment='foobar', + pad_length=3) + assert f.human_readable() + + +def test_ping_frame_to_bytes(): + f = PingFrame( + length=8, + flags=PingFrame.FLAG_ACK, + stream_id=0x0, + payload=b'foobar') + assert_equal( + f.to_bytes().encode('hex'), + '000008060100000000666f6f6261720000') + + f = PingFrame( + length=8, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + payload=b'foobardeadbeef') + assert_equal( + f.to_bytes().encode('hex'), + '000008060000000000666f6f6261726465') + + f = PingFrame( + length=8, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567) + tutils.raises(ValueError, f.to_bytes) + + +def test_ping_frame_from_bytes(): + f = Frame.from_file(hex_to_file('000008060100000000666f6f6261720000')) + assert isinstance(f, PingFrame) + assert_equal(f.length, 8) + assert_equal(f.TYPE, PingFrame.TYPE) + assert_equal(f.flags, PingFrame.FLAG_ACK) + assert_equal(f.stream_id, 0x0) + assert_equal(f.payload, b'foobar\0\0') + + f = Frame.from_file(hex_to_file('000008060000000000666f6f6261726465')) + assert isinstance(f, PingFrame) + assert_equal(f.length, 8) + assert_equal(f.TYPE, PingFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + assert_equal(f.payload, b'foobarde') + + +def test_ping_frame_human_readable(): + f = PingFrame( + length=8, + flags=PingFrame.FLAG_ACK, + stream_id=0x0, + payload=b'foobar') + assert f.human_readable() + + +def test_goaway_frame_to_bytes(): + f = GoAwayFrame( + length=8, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + last_stream=0x1234567, + error_code=0x87654321, + data=b'') + assert_equal( + f.to_bytes().encode('hex'), + '0000080700000000000123456787654321') + + f = GoAwayFrame( + length=14, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + last_stream=0x1234567, + error_code=0x87654321, + data=b'foobar') + assert_equal( + f.to_bytes().encode('hex'), + '00000e0700000000000123456787654321666f6f626172') + + f = GoAwayFrame( + length=8, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + last_stream=0x1234567, + error_code=0x87654321) + tutils.raises(ValueError, f.to_bytes) + + +def test_goaway_frame_from_bytes(): + f = Frame.from_file(hex_to_file( + '0000080700000000000123456787654321')) + assert isinstance(f, GoAwayFrame) + assert_equal(f.length, 8) + assert_equal(f.TYPE, GoAwayFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + assert_equal(f.last_stream, 0x1234567) + assert_equal(f.error_code, 0x87654321) + assert_equal(f.data, b'') + + f = Frame.from_file(hex_to_file( + '00000e0700000000000123456787654321666f6f626172')) + assert isinstance(f, GoAwayFrame) + assert_equal(f.length, 14) + assert_equal(f.TYPE, GoAwayFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + assert_equal(f.last_stream, 0x1234567) + assert_equal(f.error_code, 0x87654321) + assert_equal(f.data, b'foobar') + + +def test_go_away_frame_human_readable(): + f = GoAwayFrame( + length=14, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + last_stream=0x1234567, + error_code=0x87654321, + data=b'foobar') + assert f.human_readable() + + +def test_window_update_frame_to_bytes(): + f = WindowUpdateFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + window_size_increment=0x1234567) + assert_equal(f.to_bytes().encode('hex'), '00000408000000000001234567') + + f = WindowUpdateFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + window_size_increment=0x7654321) + assert_equal(f.to_bytes().encode('hex'), '00000408000123456707654321') + + f = WindowUpdateFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x0, + window_size_increment=0xdeadbeef) + tutils.raises(ValueError, f.to_bytes) + + f = WindowUpdateFrame(4, Frame.FLAG_NO_FLAGS, 0x0, window_size_increment=0) + tutils.raises(ValueError, f.to_bytes) + + +def test_window_update_frame_from_bytes(): + f = Frame.from_file(hex_to_file('00000408000000000001234567')) + assert isinstance(f, WindowUpdateFrame) + assert_equal(f.length, 4) + assert_equal(f.TYPE, WindowUpdateFrame.TYPE) + assert_equal(f.flags, Frame.FLAG_NO_FLAGS) + assert_equal(f.stream_id, 0x0) + assert_equal(f.window_size_increment, 0x1234567) + + +def test_window_update_frame_human_readable(): + f = WindowUpdateFrame( + length=4, + flags=Frame.FLAG_NO_FLAGS, + stream_id=0x1234567, + window_size_increment=0x7654321) + assert f.human_readable() + + +def test_continuation_frame_to_bytes(): + f = ContinuationFrame( + length=6, + flags=ContinuationFrame.FLAG_END_HEADERS, + stream_id=0x1234567, + header_block_fragment='foobar') + assert_equal(f.to_bytes().encode('hex'), '000006090401234567666f6f626172') + + f = ContinuationFrame( + length=6, + flags=ContinuationFrame.FLAG_END_HEADERS, + stream_id=0x0, + header_block_fragment='foobar') + tutils.raises(ValueError, f.to_bytes) + + +def test_continuation_frame_from_bytes(): + f = Frame.from_file(hex_to_file('000006090401234567666f6f626172')) + assert isinstance(f, ContinuationFrame) + assert_equal(f.length, 6) + assert_equal(f.TYPE, ContinuationFrame.TYPE) + assert_equal(f.flags, ContinuationFrame.FLAG_END_HEADERS) + assert_equal(f.stream_id, 0x1234567) + assert_equal(f.header_block_fragment, 'foobar') + + +def test_continuation_frame_human_readable(): + f = ContinuationFrame( + length=6, + flags=ContinuationFrame.FLAG_END_HEADERS, + stream_id=0x1234567, + header_block_fragment='foobar') + assert f.human_readable() |