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import socket
from unittest import mock
import pytest
from aiohttp.tcp_helpers import tcp_nodelay
has_ipv6 = socket.has_ipv6
if has_ipv6:
# The socket.has_ipv6 flag may be True if Python was built with IPv6
# support, but the target system still may not have it.
# So let's ensure that we really have IPv6 support.
try:
with socket.socket(socket.AF_INET6, socket.SOCK_STREAM):
pass
except OSError:
has_ipv6 = False
# nodelay
def test_tcp_nodelay_exception() -> None:
transport = mock.Mock()
s = mock.Mock()
s.setsockopt = mock.Mock()
s.family = socket.AF_INET
s.setsockopt.side_effect = OSError
transport.get_extra_info.return_value = s
tcp_nodelay(transport, True)
s.setsockopt.assert_called_with(socket.IPPROTO_TCP, socket.TCP_NODELAY, True)
def test_tcp_nodelay_enable() -> None:
transport = mock.Mock()
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
transport.get_extra_info.return_value = s
tcp_nodelay(transport, True)
assert s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
def test_tcp_nodelay_enable_and_disable() -> None:
transport = mock.Mock()
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
transport.get_extra_info.return_value = s
tcp_nodelay(transport, True)
assert s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
tcp_nodelay(transport, False)
assert not s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
@pytest.mark.skipif(not has_ipv6, reason="IPv6 is not available")
def test_tcp_nodelay_enable_ipv6() -> None:
transport = mock.Mock()
with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s:
transport.get_extra_info.return_value = s
tcp_nodelay(transport, True)
assert s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
@pytest.mark.skipif(not hasattr(socket, "AF_UNIX"), reason="requires unix sockets")
def test_tcp_nodelay_enable_unix() -> None:
# do not set nodelay for unix socket
transport = mock.Mock()
s = mock.Mock(family=socket.AF_UNIX, type=socket.SOCK_STREAM)
transport.get_extra_info.return_value = s
tcp_nodelay(transport, True)
assert not s.setsockopt.called
def test_tcp_nodelay_enable_no_socket() -> None:
transport = mock.Mock()
transport.get_extra_info.return_value = None
tcp_nodelay(transport, True)
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