def test_read_headers_out_of_order(self):
# If header blocks aren't decoded in the same order they're received,
# regardless of the stream they belong to, the decoder state will
# become corrupted.
e = Encoder()
h1 = HeadersFrame(1)
h1.data = e.encode([(':status', 200), ('content-type', 'foo/bar')])
h1.flags |= set(['END_HEADERS', 'END_STREAM'])
h3 = HeadersFrame(3)
h3.data = e.encode([(':status', 200), ('content-type', 'baz/qux')])
h3.flags |= set(['END_HEADERS', 'END_STREAM'])
sock = DummySocket()
sock.buffer = BytesIO(h1.serialize() + h3.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
r1 = c.request('GET', '/a')
r3 = c.request('GET', '/b')
assert c.get_response(r3).headers == HTTPHeaderMap(
[('content-type', 'baz/qux')]
)
assert c.get_response(r1).headers == HTTPHeaderMap(
[('content-type', 'foo/bar')]
)
def test_read_headers_out_of_order(self):
# If header blocks aren't decoded in the same order they're received,
# regardless of the stream they belong to, the decoder state will
# become corrupted.
e = Encoder()
h1 = HeadersFrame(1)
h1.data = e.encode([(':status', 200), ('content-type', 'foo/bar')])
h1.flags |= set(['END_HEADERS', 'END_STREAM'])
h3 = HeadersFrame(3)
h3.data = e.encode([(':status', 200), ('content-type', 'baz/qux')])
h3.flags |= set(['END_HEADERS', 'END_STREAM'])
sock = DummySocket()
sock.buffer = BytesIO(h1.serialize() + h3.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
r1 = c.request('GET', '/a')
r3 = c.request('GET', '/b')
assert c.get_response(r3).headers == HTTPHeaderMap(
[('content-type', 'baz/qux')]
)
assert c.get_response(r1).headers == HTTPHeaderMap(
[('content-type', 'foo/bar')]
)
def socket_handler(listener):
sock = listener.accept()[0]
receive_preamble(sock)
data.append(sock.recv(65535))
send_event.wait(5)
h = HeadersFrame(1)
h.data = self.get_encoder().encode(
[
(':status', 200),
('content-type', 'not/real'),
('content-length', 12),
('server', 'socket-level-server')
]
)
h.flags.add('END_HEADERS')
sock.send(h.serialize())
d = DataFrame(1)
d.data = b'thisisaproxy'
d.flags.add('END_STREAM')
sock.send(d.serialize())
sock.close()
def test_headers_frame_serializes_properly(self):
f = HeadersFrame(1)
f.flags = set(['END_STREAM', 'END_HEADERS'])
f.data = b'hello world'
s = f.serialize()
assert s == (b'\x00\x00\x0B\x01\x05\x00\x00\x00\x01' + b'hello world')
def test_stream_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'
sock = DummySocket()
sock.buffer = BytesIO(h.serialize() + d.serialize() + d2.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
c.request('GET', '/')
c.streams[1]._in_window_manager.window_size = 1000
c.streams[1]._in_window_manager.initial_window_size = 1000
resp = c.get_response()
resp.read(len(b'hi there sir'))
resp.read(len(b'hi there sir again'))
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 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 and one data frame.
data.append(sock.recv(65535))
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())
sock.close()
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_stream_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'
sock = DummySocket()
sock.buffer = BytesIO(h.serialize() + d.serialize() + d2.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
c.request('GET', '/')
c.streams[1]._in_window_manager.window_size = 1000
c.streams[1]._in_window_manager.initial_window_size = 1000
resp = c.get_response()
resp.read(len(b'hi there sir'))
resp.read(len(b'hi there sir again'))
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 test_headers_frame_with_no_length_parses(self):
# Fixes issue with empty data frames raising InvalidPaddingError.
f = HeadersFrame(1)
f.data = b''
data = f.serialize()
new_frame = decode_frame(data)
assert new_frame.data == b''
def test_headers_frame_with_no_length_parses(self):
# Fixes issue with empty data frames raising InvalidPaddingError.
f = HeadersFrame(1)
f.data = b''
data = f.serialize()
new_frame = decode_frame(data)
assert new_frame.data == b''
def test_headers_frame_serializes_properly(self):
f = HeadersFrame(1)
f.flags = set(['END_STREAM', 'END_HEADERS'])
f.data = b'hello world'
s = f.serialize()
assert s == (
b'\x00\x00\x0B\x01\x05\x00\x00\x00\x01' +
b'hello world'
)
def test_headers_frame_with_priority_serializes_properly(self):
# This test also tests that we can receive a HEADERS frame with no
# actual headers on it. This is technically possible.
s = (b'\x00\x00\x05\x01\x20\x00\x00\x00\x01' + b'\x80\x00\x00\x04\x40')
f = HeadersFrame(1)
f.flags = set(['PRIORITY'])
f.data = b''
f.depends_on = 4
f.stream_weight = 64
f.exclusive = True
assert f.serialize() == s
def test_headers_frame_with_priority_serializes_properly(self):
# This test also tests that we can receive a HEADERS frame with no
# actual headers on it. This is technically possible.
s = (
b'\x00\x00\x05\x01\x20\x00\x00\x00\x01' +
b'\x80\x00\x00\x04\x40'
)
f = HeadersFrame(1)
f.flags = set(['PRIORITY'])
f.data = b''
f.depends_on = 4
f.stream_weight = 64
f.exclusive = True
assert f.serialize() == s
def slow_headers(self, conn, h2conn, method="GET"):
LOGGER.info("SLOW HEADERS ATTACK=============================")
h2conn.initiate_connection()
wf = WindowUpdateFrame(0)
wf.window_increment = WINDOW_SIZE_INCREMENT
h2conn._data_to_send += wf.serialize()
conn.sendall(h2conn.data_to_send())
headers = [(":authority", args.target), (":path", "/"),
(":scheme", "http"), (":method", method)]
hf = HeadersFrame(1)
if method == "GET":
hf.flags.add("END_STREAM")
e = Encoder()
hf.data = e.encode(headers)
h2conn._data_to_send += hf.serialize()
conn.sendall(h2conn.data_to_send())
def attack2(tls_conn, h2_conn):
h2_conn.initiate_connection()
wf = WindowUpdateFrame(0)
wf.window_increment = WINDOW_INCREMENT_SIZE
h2_conn._data_to_send += wf.serialize()
tls_conn.sendall(h2_conn.data_to_send())
headers = [
(':authority', args.target),
(':path', '/'),
(':scheme', 'https'),
(':method', 'POST'),
]
hf = HeadersFrame(1)
hf.flags.add('END_HEADERS')
e = Encoder()
hf.data = hf.data = e.encode(headers)
h2_conn._data_to_send += hf.serialize()
tls_conn.sendall(h2_conn.data_to_send())
def test_headers_with_continuation(self):
e = Encoder()
header_data = e.encode([(':status', 200), ('content-type', 'foo/bar'),
('content-length', '0')])
h = HeadersFrame(1)
h.data = header_data[0:int(len(header_data) / 2)]
h.flags.add('END_STREAM')
c = ContinuationFrame(1)
c.data = header_data[int(len(header_data) / 2):]
c.flags.add('END_HEADERS')
sock = DummySocket()
sock.buffer = BytesIO(h.serialize() + c.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
r = c.request('GET', '/')
assert set(c.get_response(r).headers.iter_raw()) == set([
(b'content-type', b'foo/bar'), (b'content-length', b'0')
])
def test_headers_with_continuation(self):
e = Encoder()
header_data = e.encode([
(':status', 200), ('content-type', 'foo/bar'),
('content-length', '0')
])
h = HeadersFrame(1)
h.data = header_data[0:int(len(header_data)/2)]
h.flags.add('END_STREAM')
c = ContinuationFrame(1)
c.data = header_data[int(len(header_data)/2):]
c.flags.add('END_HEADERS')
sock = DummySocket()
sock.buffer = BytesIO(h.serialize() + c.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
r = c.request('GET', '/')
assert set(c.get_response(r).headers.iter_raw()) == set(
[(b'content-type', b'foo/bar'), (b'content-length', b'0')]
)
def test_streams_removed_on_close(self):
# Create content for read from socket
e = Encoder()
h1 = HeadersFrame(1)
h1.data = e.encode([(':status', 200), ('content-type', 'foo/bar')])
h1.flags |= set(['END_HEADERS', 'END_STREAM'])
sock = DummySocket()
sock.buffer = BytesIO(h1.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
stream_id = c.request('GET', '/')
# Create reference to current recent_recv_streams set
recent_recv_streams = c.recent_recv_streams
streams = c.streams
resp = c.get_response(stream_id=stream_id)
assert stream_id in recent_recv_streams
assert stream_id in streams
resp.read()
assert stream_id not in recent_recv_streams
assert stream_id not in streams
def test_streams_removed_on_close(self):
# Create content for read from socket
e = Encoder()
h1 = HeadersFrame(1)
h1.data = e.encode([(':status', 200), ('content-type', 'foo/bar')])
h1.flags |= set(['END_HEADERS', 'END_STREAM'])
sock = DummySocket()
sock.buffer = BytesIO(h1.serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
stream_id = c.request('GET', '/')
# Create reference to current recent_recv_streams set
recent_recv_streams = c.recent_recv_streams
streams = c.streams
resp = c.get_response(stream_id=stream_id)
assert stream_id in recent_recv_streams
assert stream_id in streams
resp.read()
assert stream_id not in recent_recv_streams
assert stream_id not in streams
def socket_handler(listener):
sock = listener.accept()[0]
receive_preamble(sock)
data.append(sock.recv(65535))
send_event.wait(5)
h = HeadersFrame(1)
h.data = self.get_encoder().encode([(':status', 200),
('content-type', 'not/real'),
('content-length', 12),
('server',
'socket-level-server')])
h.flags.add('END_HEADERS')
sock.send(h.serialize())
d = DataFrame(1)
d.data = b'thisisaproxy'
d.flags.add('END_STREAM')
sock.send(d.serialize())
sock.close()
