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585 lines
21 KiB
Python
585 lines
21 KiB
Python
"""Tests for sendfile functionality."""
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import asyncio
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import errno
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import os
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import socket
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import sys
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import tempfile
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import unittest
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from asyncio import base_events
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from asyncio import constants
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from unittest import mock
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from test import support
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from test.support import os_helper
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from test.support import socket_helper
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from test.test_asyncio import utils as test_utils
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try:
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import ssl
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except ImportError:
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ssl = None
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def tearDownModule():
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asyncio.set_event_loop_policy(None)
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class MySendfileProto(asyncio.Protocol):
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def __init__(self, loop=None, close_after=0):
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self.transport = None
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self.state = 'INITIAL'
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self.nbytes = 0
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if loop is not None:
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self.connected = loop.create_future()
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self.done = loop.create_future()
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self.data = bytearray()
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self.close_after = close_after
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def _assert_state(self, *expected):
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if self.state not in expected:
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raise AssertionError(f'state: {self.state!r}, expected: {expected!r}')
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def connection_made(self, transport):
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self.transport = transport
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self._assert_state('INITIAL')
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self.state = 'CONNECTED'
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if self.connected:
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self.connected.set_result(None)
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def eof_received(self):
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self._assert_state('CONNECTED')
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self.state = 'EOF'
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def connection_lost(self, exc):
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self._assert_state('CONNECTED', 'EOF')
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self.state = 'CLOSED'
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if self.done:
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self.done.set_result(None)
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def data_received(self, data):
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self._assert_state('CONNECTED')
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self.nbytes += len(data)
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self.data.extend(data)
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super().data_received(data)
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if self.close_after and self.nbytes >= self.close_after:
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self.transport.close()
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class MyProto(asyncio.Protocol):
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def __init__(self, loop):
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self.started = False
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self.closed = False
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self.data = bytearray()
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self.fut = loop.create_future()
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self.transport = None
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def connection_made(self, transport):
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self.started = True
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self.transport = transport
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def data_received(self, data):
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self.data.extend(data)
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def connection_lost(self, exc):
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self.closed = True
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self.fut.set_result(None)
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async def wait_closed(self):
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await self.fut
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class SendfileBase:
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# 256 KiB plus small unaligned to buffer chunk
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# Newer versions of Windows seems to have increased its internal
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# buffer and tries to send as much of the data as it can as it
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# has some form of buffering for this which is less than 256KiB
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# on newer server versions and Windows 11.
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# So DATA should be larger than 256 KiB to make this test reliable.
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DATA = b"x" * (1024 * 256 + 1)
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# Reduce socket buffer size to test on relative small data sets.
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BUF_SIZE = 4 * 1024 # 4 KiB
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def create_event_loop(self):
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raise NotImplementedError
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@classmethod
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def setUpClass(cls):
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with open(os_helper.TESTFN, 'wb') as fp:
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fp.write(cls.DATA)
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super().setUpClass()
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@classmethod
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def tearDownClass(cls):
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os_helper.unlink(os_helper.TESTFN)
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super().tearDownClass()
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def setUp(self):
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self.file = open(os_helper.TESTFN, 'rb')
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self.addCleanup(self.file.close)
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self.loop = self.create_event_loop()
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self.set_event_loop(self.loop)
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super().setUp()
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def tearDown(self):
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# just in case if we have transport close callbacks
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if not self.loop.is_closed():
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test_utils.run_briefly(self.loop)
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self.doCleanups()
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support.gc_collect()
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super().tearDown()
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def run_loop(self, coro):
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return self.loop.run_until_complete(coro)
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class SockSendfileMixin(SendfileBase):
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@classmethod
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def setUpClass(cls):
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cls.__old_bufsize = constants.SENDFILE_FALLBACK_READBUFFER_SIZE
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constants.SENDFILE_FALLBACK_READBUFFER_SIZE = 1024 * 16
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super().setUpClass()
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@classmethod
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def tearDownClass(cls):
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constants.SENDFILE_FALLBACK_READBUFFER_SIZE = cls.__old_bufsize
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super().tearDownClass()
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def make_socket(self, cleanup=True):
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.setblocking(False)
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if cleanup:
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self.addCleanup(sock.close)
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return sock
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def reduce_receive_buffer_size(self, sock):
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# Reduce receive socket buffer size to test on relative
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# small data sets.
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, self.BUF_SIZE)
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def reduce_send_buffer_size(self, sock, transport=None):
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# Reduce send socket buffer size to test on relative small data sets.
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# On macOS, SO_SNDBUF is reset by connect(). So this method
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# should be called after the socket is connected.
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, self.BUF_SIZE)
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if transport is not None:
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transport.set_write_buffer_limits(high=self.BUF_SIZE)
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def prepare_socksendfile(self):
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proto = MyProto(self.loop)
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port = socket_helper.find_unused_port()
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srv_sock = self.make_socket(cleanup=False)
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srv_sock.bind((socket_helper.HOST, port))
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server = self.run_loop(self.loop.create_server(
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lambda: proto, sock=srv_sock))
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self.reduce_receive_buffer_size(srv_sock)
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sock = self.make_socket()
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self.run_loop(self.loop.sock_connect(sock, ('127.0.0.1', port)))
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self.reduce_send_buffer_size(sock)
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def cleanup():
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if proto.transport is not None:
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# can be None if the task was cancelled before
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# connection_made callback
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proto.transport.close()
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self.run_loop(proto.wait_closed())
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server.close()
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self.run_loop(server.wait_closed())
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self.addCleanup(cleanup)
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return sock, proto
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def test_sock_sendfile_success(self):
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sock, proto = self.prepare_socksendfile()
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ret = self.run_loop(self.loop.sock_sendfile(sock, self.file))
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sock.close()
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self.run_loop(proto.wait_closed())
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sock_sendfile_with_offset_and_count(self):
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sock, proto = self.prepare_socksendfile()
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ret = self.run_loop(self.loop.sock_sendfile(sock, self.file,
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1000, 2000))
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sock.close()
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self.run_loop(proto.wait_closed())
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self.assertEqual(proto.data, self.DATA[1000:3000])
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self.assertEqual(self.file.tell(), 3000)
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self.assertEqual(ret, 2000)
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def test_sock_sendfile_zero_size(self):
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sock, proto = self.prepare_socksendfile()
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with tempfile.TemporaryFile() as f:
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ret = self.run_loop(self.loop.sock_sendfile(sock, f,
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0, None))
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sock.close()
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self.run_loop(proto.wait_closed())
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self.assertEqual(ret, 0)
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self.assertEqual(self.file.tell(), 0)
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def test_sock_sendfile_mix_with_regular_send(self):
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buf = b"mix_regular_send" * (4 * 1024) # 64 KiB
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sock, proto = self.prepare_socksendfile()
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self.run_loop(self.loop.sock_sendall(sock, buf))
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ret = self.run_loop(self.loop.sock_sendfile(sock, self.file))
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self.run_loop(self.loop.sock_sendall(sock, buf))
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sock.close()
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self.run_loop(proto.wait_closed())
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self.assertEqual(ret, len(self.DATA))
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expected = buf + self.DATA + buf
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self.assertEqual(proto.data, expected)
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self.assertEqual(self.file.tell(), len(self.DATA))
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class SendfileMixin(SendfileBase):
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# Note: sendfile via SSL transport is equal to sendfile fallback
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def prepare_sendfile(self, *, is_ssl=False, close_after=0):
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port = socket_helper.find_unused_port()
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srv_proto = MySendfileProto(loop=self.loop,
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close_after=close_after)
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if is_ssl:
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if not ssl:
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self.skipTest("No ssl module")
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srv_ctx = test_utils.simple_server_sslcontext()
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cli_ctx = test_utils.simple_client_sslcontext()
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else:
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srv_ctx = None
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cli_ctx = None
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srv_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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srv_sock.bind((socket_helper.HOST, port))
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server = self.run_loop(self.loop.create_server(
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lambda: srv_proto, sock=srv_sock, ssl=srv_ctx))
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self.reduce_receive_buffer_size(srv_sock)
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if is_ssl:
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server_hostname = socket_helper.HOST
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else:
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server_hostname = None
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cli_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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cli_sock.connect((socket_helper.HOST, port))
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cli_proto = MySendfileProto(loop=self.loop)
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tr, pr = self.run_loop(self.loop.create_connection(
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lambda: cli_proto, sock=cli_sock,
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ssl=cli_ctx, server_hostname=server_hostname))
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self.reduce_send_buffer_size(cli_sock, transport=tr)
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def cleanup():
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srv_proto.transport.close()
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.run_loop(cli_proto.done)
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server.close()
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self.run_loop(server.wait_closed())
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self.addCleanup(cleanup)
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return srv_proto, cli_proto
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@unittest.skipIf(sys.platform == 'win32', "UDP sockets are not supported")
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def test_sendfile_not_supported(self):
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tr, pr = self.run_loop(
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self.loop.create_datagram_endpoint(
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asyncio.DatagramProtocol,
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family=socket.AF_INET))
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try:
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with self.assertRaisesRegex(RuntimeError, "not supported"):
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self.run_loop(
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self.loop.sendfile(tr, self.file))
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self.assertEqual(0, self.file.tell())
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finally:
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# don't use self.addCleanup because it produces resource warning
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tr.close()
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def test_sendfile(self):
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srv_proto, cli_proto = self.prepare_sendfile()
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.nbytes, len(self.DATA))
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self.assertEqual(srv_proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_force_fallback(self):
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srv_proto, cli_proto = self.prepare_sendfile()
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def sendfile_native(transp, file, offset, count):
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# to raise SendfileNotAvailableError
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return base_events.BaseEventLoop._sendfile_native(
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self.loop, transp, file, offset, count)
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self.loop._sendfile_native = sendfile_native
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.nbytes, len(self.DATA))
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self.assertEqual(srv_proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_force_unsupported_native(self):
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if sys.platform == 'win32':
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if isinstance(self.loop, asyncio.ProactorEventLoop):
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self.skipTest("Fails on proactor event loop")
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srv_proto, cli_proto = self.prepare_sendfile()
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def sendfile_native(transp, file, offset, count):
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# to raise SendfileNotAvailableError
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return base_events.BaseEventLoop._sendfile_native(
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self.loop, transp, file, offset, count)
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self.loop._sendfile_native = sendfile_native
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with self.assertRaisesRegex(asyncio.SendfileNotAvailableError,
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"not supported"):
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self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file,
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fallback=False))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(srv_proto.nbytes, 0)
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self.assertEqual(self.file.tell(), 0)
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def test_sendfile_ssl(self):
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srv_proto, cli_proto = self.prepare_sendfile(is_ssl=True)
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.nbytes, len(self.DATA))
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self.assertEqual(srv_proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_for_closing_transp(self):
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srv_proto, cli_proto = self.prepare_sendfile()
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cli_proto.transport.close()
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with self.assertRaisesRegex(RuntimeError, "is closing"):
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self.run_loop(self.loop.sendfile(cli_proto.transport, self.file))
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self.run_loop(srv_proto.done)
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self.assertEqual(srv_proto.nbytes, 0)
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self.assertEqual(self.file.tell(), 0)
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def test_sendfile_pre_and_post_data(self):
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srv_proto, cli_proto = self.prepare_sendfile()
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PREFIX = b'PREFIX__' * 1024 # 8 KiB
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SUFFIX = b'--SUFFIX' * 1024 # 8 KiB
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cli_proto.transport.write(PREFIX)
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.write(SUFFIX)
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.data, PREFIX + self.DATA + SUFFIX)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_ssl_pre_and_post_data(self):
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srv_proto, cli_proto = self.prepare_sendfile(is_ssl=True)
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PREFIX = b'zxcvbnm' * 1024
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SUFFIX = b'0987654321' * 1024
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cli_proto.transport.write(PREFIX)
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.write(SUFFIX)
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.data, PREFIX + self.DATA + SUFFIX)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_partial(self):
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srv_proto, cli_proto = self.prepare_sendfile()
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file, 1000, 100))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, 100)
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self.assertEqual(srv_proto.nbytes, 100)
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self.assertEqual(srv_proto.data, self.DATA[1000:1100])
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self.assertEqual(self.file.tell(), 1100)
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def test_sendfile_ssl_partial(self):
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srv_proto, cli_proto = self.prepare_sendfile(is_ssl=True)
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file, 1000, 100))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, 100)
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self.assertEqual(srv_proto.nbytes, 100)
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self.assertEqual(srv_proto.data, self.DATA[1000:1100])
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self.assertEqual(self.file.tell(), 1100)
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def test_sendfile_close_peer_after_receiving(self):
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srv_proto, cli_proto = self.prepare_sendfile(
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close_after=len(self.DATA))
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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cli_proto.transport.close()
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.nbytes, len(self.DATA))
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self.assertEqual(srv_proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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def test_sendfile_ssl_close_peer_after_receiving(self):
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srv_proto, cli_proto = self.prepare_sendfile(
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is_ssl=True, close_after=len(self.DATA))
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ret = self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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self.run_loop(srv_proto.done)
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self.assertEqual(ret, len(self.DATA))
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self.assertEqual(srv_proto.nbytes, len(self.DATA))
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self.assertEqual(srv_proto.data, self.DATA)
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self.assertEqual(self.file.tell(), len(self.DATA))
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# On Solaris, lowering SO_RCVBUF on a TCP connection after it has been
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# established has no effect. Due to its age, this bug affects both Oracle
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# Solaris as well as all other OpenSolaris forks (unless they fixed it
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# themselves).
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@unittest.skipIf(sys.platform.startswith('sunos'),
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"Doesn't work on Solaris")
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def test_sendfile_close_peer_in_the_middle_of_receiving(self):
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srv_proto, cli_proto = self.prepare_sendfile(close_after=1024)
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with self.assertRaises(ConnectionError):
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self.run_loop(
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self.loop.sendfile(cli_proto.transport, self.file))
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self.run_loop(srv_proto.done)
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self.assertTrue(1024 <= srv_proto.nbytes < len(self.DATA),
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srv_proto.nbytes)
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self.assertTrue(1024 <= self.file.tell() < len(self.DATA),
|
|
self.file.tell())
|
|
self.assertTrue(cli_proto.transport.is_closing())
|
|
|
|
def test_sendfile_fallback_close_peer_in_the_middle_of_receiving(self):
|
|
|
|
def sendfile_native(transp, file, offset, count):
|
|
# to raise SendfileNotAvailableError
|
|
return base_events.BaseEventLoop._sendfile_native(
|
|
self.loop, transp, file, offset, count)
|
|
|
|
self.loop._sendfile_native = sendfile_native
|
|
|
|
srv_proto, cli_proto = self.prepare_sendfile(close_after=1024)
|
|
with self.assertRaises(ConnectionError):
|
|
try:
|
|
self.run_loop(
|
|
self.loop.sendfile(cli_proto.transport, self.file))
|
|
except OSError as e:
|
|
# macOS may raise OSError of EPROTOTYPE when writing to a
|
|
# socket that is in the process of closing down.
|
|
if e.errno == errno.EPROTOTYPE and sys.platform == "darwin":
|
|
raise ConnectionError
|
|
else:
|
|
raise
|
|
|
|
self.run_loop(srv_proto.done)
|
|
|
|
self.assertTrue(1024 <= srv_proto.nbytes < len(self.DATA),
|
|
srv_proto.nbytes)
|
|
self.assertTrue(1024 <= self.file.tell() < len(self.DATA),
|
|
self.file.tell())
|
|
|
|
@unittest.skipIf(not hasattr(os, 'sendfile'),
|
|
"Don't have native sendfile support")
|
|
def test_sendfile_prevents_bare_write(self):
|
|
srv_proto, cli_proto = self.prepare_sendfile()
|
|
fut = self.loop.create_future()
|
|
|
|
async def coro():
|
|
fut.set_result(None)
|
|
return await self.loop.sendfile(cli_proto.transport, self.file)
|
|
|
|
t = self.loop.create_task(coro())
|
|
self.run_loop(fut)
|
|
with self.assertRaisesRegex(RuntimeError,
|
|
"sendfile is in progress"):
|
|
cli_proto.transport.write(b'data')
|
|
ret = self.run_loop(t)
|
|
self.assertEqual(ret, len(self.DATA))
|
|
|
|
def test_sendfile_no_fallback_for_fallback_transport(self):
|
|
transport = mock.Mock()
|
|
transport.is_closing.side_effect = lambda: False
|
|
transport._sendfile_compatible = constants._SendfileMode.FALLBACK
|
|
with self.assertRaisesRegex(RuntimeError, 'fallback is disabled'):
|
|
self.loop.run_until_complete(
|
|
self.loop.sendfile(transport, None, fallback=False))
|
|
|
|
|
|
class SendfileTestsBase(SendfileMixin, SockSendfileMixin):
|
|
pass
|
|
|
|
|
|
if sys.platform == 'win32':
|
|
|
|
class SelectEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.SelectorEventLoop()
|
|
|
|
class ProactorEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.ProactorEventLoop()
|
|
|
|
else:
|
|
import selectors
|
|
|
|
if hasattr(selectors, 'KqueueSelector'):
|
|
class KqueueEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.SelectorEventLoop(
|
|
selectors.KqueueSelector())
|
|
|
|
if hasattr(selectors, 'EpollSelector'):
|
|
class EPollEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.SelectorEventLoop(selectors.EpollSelector())
|
|
|
|
if hasattr(selectors, 'PollSelector'):
|
|
class PollEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.SelectorEventLoop(selectors.PollSelector())
|
|
|
|
# Should always exist.
|
|
class SelectEventLoopTests(SendfileTestsBase,
|
|
test_utils.TestCase):
|
|
|
|
def create_event_loop(self):
|
|
return asyncio.SelectorEventLoop(selectors.SelectSelector())
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|