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# -*- coding: utf-8 -*-
from hyper.packages.hyperframe.frame import (
Frame, DataFrame, RstStreamFrame, SettingsFrame,
PushPromiseFrame, PingFrame, WindowUpdateFrame, HeadersFrame,
ContinuationFrame, BlockedFrame, GoAwayFrame,
)
from hyper.packages.hpack.hpack_compat import Encoder, Decoder
from hyper.http20.connection import HTTP20Connection
from hyper.http20.stream import (
Stream, STATE_HALF_CLOSED_LOCAL, STATE_OPEN, MAX_CHUNK, STATE_CLOSED
)
from hyper.http20.response import HTTP20Response, HTTP20Push
from hyper.http20.exceptions import (
HPACKDecodingError, HPACKEncodingError, ProtocolError, ConnectionError,
)
from hyper.http20.window import FlowControlManager
from hyper.http20.util import (
combine_repeated_headers, split_repeated_headers, h2_safe_headers
)
from hyper.common.headers import HTTPHeaderMap
from hyper.compat import zlib_compressobj
from hyper.contrib import HTTP20Adapter
import hyper.http20.errors as errors
import errno
import os
import pytest
import socket
import zlib
from io import BytesIO
def decode_frame(frame_data):
f, length = Frame.parse_frame_header(frame_data[:9])
f.parse_body(memoryview(frame_data[9:9 + length]))
assert 9 + length == len(frame_data)
return f
class TestHyperConnection(object):
def test_connections_accept_hosts_and_ports(self):
c = HTTP20Connection(host='www.google.com', port=8080)
assert c.host =='www.google.com'
assert c.port == 8080
def test_connections_can_parse_hosts_and_ports(self):
c = HTTP20Connection('www.google.com:8080')
assert c.host == 'www.google.com'
assert c.port == 8080
def test_putrequest_establishes_new_stream(self):
c = HTTP20Connection("www.google.com")
stream_id = c.putrequest('GET', '/')
stream = c.streams[stream_id]
assert len(c.streams) == 1
assert c.recent_stream is stream
def test_putrequest_autosets_headers(self):
c = HTTP20Connection("www.google.com")
c.putrequest('GET', '/')
s = c.recent_stream
assert s.headers == [
(':method', 'GET'),
(':scheme', 'https'),
(':authority', 'www.google.com'),
(':path', '/'),
]
def test_putheader_puts_headers(self):
c = HTTP20Connection("www.google.com")
c.putrequest('GET', '/')
c.putheader('name', 'value')
s = c.recent_stream
assert s.headers == [
(':method', 'GET'),
(':scheme', 'https'),
(':authority', 'www.google.com'),
(':path', '/'),
('name', 'value'),
]
def test_endheaders_sends_data(self):
frames = []
def data_callback(frame):
frames.append(frame)
c = HTTP20Connection('www.google.com')
c._sock = DummySocket()
c._send_cb = data_callback
c.putrequest('GET', '/')
c.endheaders()
assert len(frames) == 1
f = frames[0]
assert isinstance(f, HeadersFrame)
def test_we_can_send_data_using_endheaders(self):
frames = []
def data_callback(frame):
frames.append(frame)
c = HTTP20Connection('www.google.com')
c._sock = DummySocket()
c._send_cb = data_callback
c.putrequest('GET', '/')
c.endheaders(message_body=b'hello there', final=True)
assert len(frames) == 2
assert isinstance(frames[0], HeadersFrame)
assert frames[0].flags == set(['END_HEADERS'])
assert isinstance(frames[1], DataFrame)
assert frames[1].data == b'hello there'
assert frames[1].flags == set(['END_STREAM'])
def test_that_we_correctly_send_over_the_socket(self):
sock = DummySocket()
c = HTTP20Connection('www.google.com')
c._sock = sock
c.putrequest('GET', '/')
c.endheaders(message_body=b'hello there', final=True)
# Don't bother testing that the serialization was ok, that should be
# fine.
assert len(sock.queue) == 2
# Confirm the window got shrunk.
assert c._out_flow_control_window == 65535 - len(b'hello there')
def test_we_can_read_from_the_socket(self):
sock = DummySocket()
sock.buffer = BytesIO(b'\x00\x00\x08\x00\x01\x00\x00\x00\x01testdata')
c = HTTP20Connection('www.google.com')
c._sock = sock
c.putrequest('GET', '/')
c.endheaders()
c._recv_cb()
s = c.recent_stream
assert s.data == [b'testdata']
def test_we_can_read_fitfully_from_the_socket(self):
sock = DummyFitfullySocket()
sock.buffer = BytesIO(
b'\x00\x00\x18\x00\x01\x00\x00\x00\x01'
b'testdata'
b'+payload'
)
c = HTTP20Connection('www.google.com')
c._sock = sock
c.putrequest('GET', '/')
c.endheaders()
c._recv_cb()
s = c.recent_stream
assert s.data == [b'testdata+payload']
def test_putrequest_sends_data(self):
sock = DummySocket()
c = HTTP20Connection('www.google.com')
c._sock = sock
c.request(
'GET',
'/',
body='hello',
headers={'Content-Type': 'application/json'}
)
# The socket should have received one headers frame and one body frame.
assert len(sock.queue) == 2
assert c._out_flow_control_window == 65535 - len(b'hello')
def test_closed_connections_are_reset(self):
c = HTTP20Connection('www.google.com')
c._sock = DummySocket()
encoder = c.encoder
decoder = c.decoder
wm = c.window_manager
c.request('GET', '/')
c.close()
assert c._sock is None
assert not c.streams
assert c.recent_stream is None
assert c.next_stream_id == 1
assert c.encoder is not encoder
assert c.decoder is not decoder
assert c._settings == {
SettingsFrame.INITIAL_WINDOW_SIZE: 65535,
}
assert c._out_flow_control_window == 65535
assert c.window_manager is not wm
def test_connection_doesnt_send_window_update_on_zero_length_data_frame(self):
# Prepare a socket with a data frame in it that has no length.
sock = DummySocket()
sock.buffer = BytesIO(DataFrame(1).serialize())
c = HTTP20Connection('www.google.com')
c._sock = sock
# We open a request here just to allocate a stream, but we throw away
# the frames it sends.
c.request('GET', '/')
sock.queue = []
# Read the frame.
c._recv_cb()
# No frame should have been sent on the connection.
assert len(sock.queue) == 0
def test_streams_are_cleared_from_connections_on_close(self):
# Prepare a socket so we can open a stream.
sock = DummySocket()
c = HTTP20Connection('www.google.com')
c._sock = sock
# Open a request (which creates a stream)
c.request('GET', '/')
# Close the stream.
c.streams[1].close()
# There should be nothing left, but the next stream ID should be
# unchanged.
assert not c.streams
assert c.next_stream_id == 3
def test_connections_increment_send_window_properly(self):
f = WindowUpdateFrame(0)
f.window_increment = 1000
c = HTTP20Connection('www.google.com')
c._sock = DummySocket()
# 'Receive' the WINDOWUPDATE frame.
c.receive_frame(f)
assert c._out_flow_control_window == 65535 + 1000
def test_connections_handle_resizing_header_tables_properly(self):
sock = DummySocket()
f = SettingsFrame(0)
f.settings[SettingsFrame.HEADER_TABLE_SIZE] = 1024
c = HTTP20Connection('www.google.com')
c._sock = sock
# 'Receive' the SETTINGS frame.
c.receive_frame(f)
# Confirm that the setting is stored and the header table shrunk.
assert c._settings[SettingsFrame.HEADER_TABLE_SIZE] == 1024
# Confirm we got a SETTINGS ACK.
f2 = decode_frame(sock.queue[0])
assert isinstance(f2, SettingsFrame)
assert f2.stream_id == 0
assert f2.flags == set(['ACK'])
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_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)]
c = ContinuationFrame(1)
c.data = header_data[int(len(header_data)/2):]
c.flags |= set(['END_HEADERS', 'END_STREAM'])
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_receive_unexpected_frame(self):
# RST_STREAM frames are never defined on connections, so send one of
# those.
c = HTTP20Connection('www.google.com')
f = RstStreamFrame(1)
with pytest.raises(ValueError):
c.receive_frame(f)
def test_send_tolerate_peer_gone(self):
class ErrorSocket(DummySocket):
def send(self, data):
raise socket.error(errno.EPIPE)
c = HTTP20Connection('www.google.com')
c._sock = ErrorSocket()
f = SettingsFrame(0)
with pytest.raises(socket.error):
c._send_cb(f, False)
c._sock = DummySocket()
c._send_cb(f, True) # shouldn't raise an error
def test_window_increments_appropriately(self):
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()
queue = list(map(decode_frame, map(memoryview, sock.queue)))
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_ping_with_ack_ignored(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.flags = set(['ACK'])
f.opaque_data = b'12345678'
def data_cb(frame, tolerate_peer_gone=False):
assert False, 'should not be called'
c._send_cb = data_cb
c.receive_frame(f)
def test_ping_without_ack_gets_reply(self):
c = HTTP20Connection('www.google.com')
f = PingFrame(0)
f.opaque_data = b'12345678'
frames = []
def data_cb(frame, tolerate_peer_gone=False):
frames.append(frame)
c._send_cb = data_cb
c.receive_frame(f)
assert len(frames) == 1
assert frames[0].type == PingFrame.type
assert frames[0].flags == set(['ACK'])
assert frames[0].opaque_data == b'12345678'
def test_blocked_causes_window_updates(self):
frames = []
def data_cb(frame, *args):
frames.append(frame)
c = HTTP20Connection('www.google.com')
c._send_cb = data_cb
# Change the window size.
c.window_manager.window_size = 60000
# Provide a BLOCKED frame.
f = BlockedFrame(1)
c.receive_frame(f)
assert len(frames) == 1
assert frames[0].type == WindowUpdateFrame.type
assert frames[0].window_increment == 5535
class TestServerPush(object):
def setup_method(self, method):
self.frames = []
self.encoder = Encoder()
self.conn = None
def add_push_frame(self, stream_id, promised_stream_id, headers, end_block=True):
frame = PushPromiseFrame(stream_id)
frame.promised_stream_id = promised_stream_id
frame.data = self.encoder.encode(headers)
if end_block:
frame.flags.add('END_HEADERS')
self.frames.append(frame)
def add_headers_frame(self, stream_id, headers, end_block=True, end_stream=False):
frame = HeadersFrame(stream_id)
frame.data = self.encoder.encode(headers)
if end_block:
frame.flags.add('END_HEADERS')
if end_stream:
frame.flags.add('END_STREAM')
self.frames.append(frame)
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 request(self):
self.conn = HTTP20Connection('www.google.com', enable_push=True)
self.conn._sock = DummySocket()
self.conn._sock.buffer = BytesIO(b''.join([frame.serialize() for frame in self.frames]))
self.conn.request('GET', '/')
def assert_response(self):
self.response = self.conn.get_response()
assert self.response.status == 200
assert dict(self.response.headers) == {b'content-type': [b'text/html']}
def assert_pushes(self):
self.pushes = list(self.conn.get_pushes())
assert len(self.pushes) == 1
assert self.pushes[0].method == b'GET'
assert self.pushes[0].scheme == b'https'
assert self.pushes[0].authority == b'www.google.com'
assert self.pushes[0].path == b'/'
expected_headers = {b'accept-encoding': [b'gzip']}
assert dict(self.pushes[0].request_headers) == expected_headers
def assert_push_response(self):
push_response = self.pushes[0].get_response()
assert push_response.status == 200
assert dict(push_response.headers) == {b'content-type': [b'application/javascript']}
assert push_response.read() == b'bar'
def test_promise_before_headers(self):
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.add_data_frame(1, b'foo', end_stream=True)
self.add_headers_frame(2, [(':status', '200'), ('content-type', 'application/javascript')])
self.add_data_frame(2, b'bar', end_stream=True)
self.request()
assert len(list(self.conn.get_pushes())) == 0
self.assert_response()
self.assert_pushes()
assert self.response.read() == b'foo'
self.assert_push_response()
def test_promise_after_headers(self):
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_data_frame(1, b'foo', end_stream=True)
self.add_headers_frame(2, [(':status', '200'), ('content-type', 'application/javascript')])
self.add_data_frame(2, b'bar', end_stream=True)
self.request()
assert len(list(self.conn.get_pushes())) == 0
self.assert_response()
assert len(list(self.conn.get_pushes())) == 0
assert self.response.read() == b'foo'
self.assert_pushes()
self.assert_push_response()
def test_promise_after_data(self):
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.add_data_frame(1, b'fo')
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_data_frame(1, b'o', end_stream=True)
self.add_headers_frame(2, [(':status', '200'), ('content-type', 'application/javascript')])
self.add_data_frame(2, b'bar', end_stream=True)
self.request()
assert len(list(self.conn.get_pushes())) == 0
self.assert_response()
assert len(list(self.conn.get_pushes())) == 0
assert self.response.read() == b'foo'
self.assert_pushes()
self.assert_push_response()
def test_capture_all_promises(self):
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/one'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.add_push_frame(1, 4, [(':method', 'GET'), (':path', '/two'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_data_frame(1, b'foo', end_stream=True)
self.add_headers_frame(4, [(':status', '200'), ('content-type', 'application/javascript')])
self.add_headers_frame(2, [(':status', '200'), ('content-type', 'application/javascript')])
self.add_data_frame(4, b'two', end_stream=True)
self.add_data_frame(2, b'one', end_stream=True)
self.request()
assert len(list(self.conn.get_pushes())) == 0
pushes = list(self.conn.get_pushes(capture_all=True))
assert len(pushes) == 2
assert pushes[0].path == b'/one'
assert pushes[1].path == b'/two'
assert pushes[0].get_response().read() == b'one'
assert pushes[1].get_response().read() == b'two'
self.assert_response()
assert self.response.read() == b'foo'
def test_cancel_push(self):
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.request()
self.conn.get_response()
list(self.conn.get_pushes())[0].cancel()
f = RstStreamFrame(2)
f.error_code = 8
assert self.conn._sock.queue[-1] == f.serialize()
def test_reset_pushed_streams_when_push_disabled(self):
self.add_push_frame(1, 2, [(':method', 'GET'), (':path', '/'), (':authority', 'www.google.com'), (':scheme', 'https'), ('accept-encoding', 'gzip')])
self.add_headers_frame(1, [(':status', '200'), ('content-type', 'text/html')])
self.request()
self.conn._enable_push = False
self.conn.get_response()
f = RstStreamFrame(2)
f.error_code = 7
assert self.conn._sock.queue[-1] == f.serialize()
def test_pushed_requests_ignore_unexpected_headers(self):
headers = HTTPHeaderMap([
(':scheme', 'http'),
(':method', 'get'),
(':authority', 'google.com'),
(':path', '/'),
(':reserved', 'no'),
('no', 'no'),
])
p = HTTP20Push(headers, DummyStream(b''))
assert p.request_headers == HTTPHeaderMap([('no', 'no')])
class TestHyperStream(object):
def test_streams_have_ids(self):
s = Stream(1, None, None, None, None, None, None)
assert s.stream_id == 1
def test_streams_initially_have_no_headers(self):
s = Stream(1, None, None, None, None, None, None)
assert s.headers == []
def test_streams_can_have_headers(self):
s = Stream(1, None, None, None, None, None, None)
s.add_header("name", "value")
assert s.headers == [("name", "value")]
def test_stream_opening_sends_headers(self):
def data_callback(frame):
assert isinstance(frame, HeadersFrame)
assert frame.data == 'testkeyTestVal'
assert frame.flags == set(['END_STREAM', 'END_HEADERS'])
s = Stream(1, data_callback, None, None, NullEncoder, None, None)
s.add_header("TestKey", "TestVal")
s.open(True)
assert s.state == STATE_HALF_CLOSED_LOCAL
def test_file_objects_can_be_sent(self):
def data_callback(frame):
assert isinstance(frame, DataFrame)
assert frame.data == b'Hi there!'
assert frame.flags == set(['END_STREAM'])
s = Stream(1, data_callback, None, None, NullEncoder, None, None)
s.state = STATE_OPEN
s.send_data(BytesIO(b'Hi there!'), True)
assert s.state == STATE_HALF_CLOSED_LOCAL
assert s._out_flow_control_window == 65535 - len(b'Hi there!')
def test_large_file_objects_are_broken_into_chunks(self):
frame_count = [0]
recent_frame = [None]
def data_callback(frame):
assert isinstance(frame, DataFrame)
assert len(frame.data) <= MAX_CHUNK
frame_count[0] += 1
recent_frame[0] = frame
data = b'test' * (MAX_CHUNK + 1)
s = Stream(1, data_callback, None, None, NullEncoder, None, None)
s.state = STATE_OPEN
s.send_data(BytesIO(data), True)
assert s.state == STATE_HALF_CLOSED_LOCAL
assert recent_frame[0].flags == set(['END_STREAM'])
assert frame_count[0] == 5
assert s._out_flow_control_window == 65535 - len(data)
def test_bytestrings_can_be_sent(self):
def data_callback(frame):
assert isinstance(frame, DataFrame)
assert frame.data == b'Hi there!'
assert frame.flags == set(['END_STREAM'])
s = Stream(1, data_callback, None, None, NullEncoder, None, None)
s.state = STATE_OPEN
s.send_data(b'Hi there!', True)
assert s.state == STATE_HALF_CLOSED_LOCAL
assert s._out_flow_control_window == 65535 - len(b'Hi there!')
def test_long_bytestrings_are_split(self):
frame_count = [0]
recent_frame = [None]
def data_callback(frame):
assert isinstance(frame, DataFrame)
assert len(frame.data) <= MAX_CHUNK
frame_count[0] += 1
recent_frame[0] = frame
data = b'test' * (MAX_CHUNK + 1)
s = Stream(1, data_callback, None, None, NullEncoder, None, None)
s.state = STATE_OPEN
s.send_data(data, True)
assert s.state == STATE_HALF_CLOSED_LOCAL
assert recent_frame[0].flags == set(['END_STREAM'])
assert frame_count[0] == 5
assert s._out_flow_control_window == 65535 - len(data)
def test_windowupdate_frames_update_windows(self):
s = Stream(1, None, None, None, None, None, None)
f = WindowUpdateFrame(1)
f.window_increment = 1000
s.receive_frame(f)
assert s._out_flow_control_window == 65535 + 1000
def test_flow_control_manager_update_includes_padding(self):
out_frames = []
in_frames = []
def send_cb(frame):
out_frames.append(frame)
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
start_window = 65535
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(start_window))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide two data frames to read.
f = DataFrame(1)
f.data = b'hi there!'
f.pad_length = 10
f.flags.add('END_STREAM')
in_frames.append(f)
data = s._read()
assert data == b'hi there!'
assert s._in_window_manager.window_size == start_window - f.pad_length - len(data) - 1
def test_blocked_frames_cause_window_updates(self):
out_frames = []
def send_cb(frame, *args):
out_frames.append(frame)
start_window = 65535
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(start_window))
s._data_cb = send_cb
s.state = STATE_HALF_CLOSED_LOCAL
# Change the window size.
s._in_window_manager.window_size = 60000
# Provide a BLOCKED frame.
f = BlockedFrame(1)
s.receive_frame(f)
assert len(out_frames) == 1
assert out_frames[0].type == WindowUpdateFrame.type
assert out_frames[0].window_increment == 5535
def test_stream_reading_works(self):
out_frames = []
in_frames = []
def send_cb(frame, tolerate_peer_gone=False):
out_frames.append(frame)
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(65535))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide a data frame to read.
f = DataFrame(1)
f.data = b'hi there!'
f.flags.add('END_STREAM')
in_frames.append(f)
data = s._read()
assert data == b'hi there!'
assert len(out_frames) == 0
def test_can_read_multiple_frames_from_streams(self):
out_frames = []
in_frames = []
def send_cb(frame, tolerate_peer_gone=False):
out_frames.append(frame)
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(800))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide two data frames to read.
f = DataFrame(1)
f.data = b'hi there!'
in_frames.append(f)
f = DataFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
in_frames.append(f)
data = s._read()
assert data == b'hi there!hi there again!'
assert len(out_frames) == 1
assert isinstance(out_frames[0], WindowUpdateFrame)
assert out_frames[0].window_increment == len(b'hi there!')
def test_partial_reads_from_streams(self):
out_frames = []
in_frames = []
def send_cb(frame, tolerate_peer_gone=False):
out_frames.append(frame)
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(800))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide two data frames to read.
f = DataFrame(1)
f.data = b'hi there!'
in_frames.append(f)
f = DataFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
in_frames.append(f)
# We'll get the entire first frame.
data = s._read(4)
assert data == b'hi there!'
assert len(out_frames) == 1
# Now we'll get the entire of the second frame.
data = s._read(4)
assert data == b'hi there again!'
assert len(out_frames) == 1
assert s.state == STATE_CLOSED
def test_can_receive_continuation_frame_after_end_stream(self):
s = Stream(1, None, None, None, None, None, FlowControlManager(65535))
f = HeadersFrame(1)
f.data = 'hi there'
f.flags = set('END_STREAM')
f2 = ContinuationFrame(1)
f2.data = ' sir'
f2.flags = set('END_HEADERS')
s.receive_frame(f)
s.receive_frame(f2)
def test_receive_unexpected_frame(self):
# SETTINGS frames are never defined on streams, so send one of those.
s = Stream(1, None, None, None, None, None, None)
f = SettingsFrame(0)
with pytest.raises(ValueError):
s.receive_frame(f)
def test_can_receive_trailers(self):
headers = [('a', 'b'), ('c', 'd'), (':status', '200')]
trailers = [('e', 'f'), ('g', 'h')]
s = Stream(1, None, None, None, None, FixedDecoder(headers), None)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide the first HEADERS frame.
f = HeadersFrame(1)
f.data = b'hi there!'
f.flags.add('END_HEADERS')
s.receive_frame(f)
assert s.response_headers == HTTPHeaderMap(headers)
# Now, replace the dummy decoder to ensure we get a new header block.
s._decoder = FixedDecoder(trailers)
# Provide the trailers.
f = HeadersFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
f.flags.add('END_HEADERS')
s.receive_frame(f)
# Now, check the trailers.
assert s.response_trailers == HTTPHeaderMap(trailers)
# Confirm we closed the stream.
assert s.state == STATE_CLOSED
def test_cannot_receive_three_header_blocks(self):
first = [('a', 'b'), ('c', 'd'), (':status', '200')]
s = Stream(1, None, None, None, None, FixedDecoder(first), None)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide the first two header frames.
f = HeadersFrame(1)
f.data = b'hi there!'
f.flags.add('END_HEADERS')
s.receive_frame(f)
f = HeadersFrame(1)
f.data = b'hi there again!'
f.flags.add('END_HEADERS')
s.receive_frame(f)
# Provide the third. This one blows up.
f = HeadersFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
f.flags.add('END_HEADERS')
with pytest.raises(ProtocolError):
s.receive_frame(f)
def test_reading_trailers_early_reads_all_data(self):
in_frames = []
headers = [('a', 'b'), ('c', 'd'), (':status', '200')]
trailers = [('e', 'f'), ('g', 'h')]
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
s = Stream(1, None, None, None, None, FixedDecoder(headers), FlowControlManager(65535))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide the first HEADERS frame.
f = HeadersFrame(1)
f.data = b'hi there!'
f.flags.add('END_HEADERS')
in_frames.append(f)
# Provide some data.
f = DataFrame(1)
f.data = b'testdata'
in_frames.append(f)
# Provide the trailers.
f = HeadersFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
f.flags.add('END_HEADERS')
in_frames.append(f)
# Begin by reading the first headers.
assert s.getheaders() == HTTPHeaderMap(headers)
# Now, replace the dummy decoder to ensure we get a new header block.
s._decoder = FixedDecoder(trailers)
# Ask for the trailers. This should also read the data frames.
assert s.gettrailers() == HTTPHeaderMap(trailers)
assert s.data == [b'testdata']
def test_can_read_single_frames_from_streams(self):
out_frames = []
in_frames = []
def send_cb(frame, tolerate_peer_gone=False):
out_frames.append(frame)
def recv_cb(s):
def inner():
s.receive_frame(in_frames.pop(0))
return inner
s = Stream(1, send_cb, None, None, None, None, FlowControlManager(800))
s._recv_cb = recv_cb(s)
s.state = STATE_HALF_CLOSED_LOCAL
# Provide two data frames to read.
f = DataFrame(1)
f.data = b'hi there!'
in_frames.append(f)
f = DataFrame(1)
f.data = b'hi there again!'
f.flags.add('END_STREAM')
in_frames.append(f)
data = s._read_one_frame()
assert data == b'hi there!'
data = s._read_one_frame()
assert data == b'hi there again!'
data = s._read_one_frame()
assert data is None
data = s._read()
assert data == b''
class TestResponse(object):
def test_status_is_stripped_from_headers(self):
headers = HTTPHeaderMap([(':status', '200')])
resp = HTTP20Response(headers, None)
assert resp.status == 200
assert not resp.headers
def test_response_transparently_decrypts_gzip(self):
headers = HTTPHeaderMap([(':status', '200'), ('content-encoding', 'gzip')])
c = zlib_compressobj(wbits=24)
body = c.compress(b'this is test data')
body += c.flush()
resp = HTTP20Response(headers, DummyStream(body))
assert resp.read() == b'this is test data'
def test_response_transparently_decrypts_real_deflate(self):
headers = HTTPHeaderMap([(':status', '200'), ('content-encoding', 'deflate')])
c = zlib_compressobj(wbits=zlib.MAX_WBITS)
body = c.compress(b'this is test data')
body += c.flush()
resp = HTTP20Response(headers, DummyStream(body))
assert resp.read() == b'this is test data'
def test_response_transparently_decrypts_wrong_deflate(self):
headers = HTTPHeaderMap([(':status', '200'), ('content-encoding', 'deflate')])