Tests failing with IPv6 disabled

[jackwilsdon]

Describe the bug

Some aiohttp tests fail when IPv6 is disabled with the kernel parameter ipv6.disable=1.

To Reproduce

Run make on a system with IPv6 disabled.

Expected behavior

Tests should pass.

Logs/tracebacks

Log

$ make test
============================= test session starts ==============================
platform linux -- Python 3.13.0, pytest-8.3.3, pluggy-1.5.0
codspeed: 3.0.0 (disabled, mode: walltime, timer_resolution: 1.0ns)
rootdir: aiohttp
configfile: setup.cfg
testpaths: tests/
plugins: cov-5.0.0, mock-3.14.0, codspeed-3.0.0, xdist-3.6.1
created: 16/16 workers
16 workers [3430 items]

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==================================== ERRORS ====================================
__________ ERROR at teardown of test_tcp_connector_interleave[pyloop] __________
[gw15] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

cls = <class '_pytest.runner.CallInfo'>
func = <function call_and_report.<locals>.<lambda> at 0x7fd883055940>
when = 'teardown'
reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)

    @classmethod
    def from_call(
        cls,
        func: Callable[[], TResult],
        when: Literal["collect", "setup", "call", "teardown"],
        reraise: type[BaseException] | tuple[type[BaseException], ...] | None = None,
    ) -> CallInfo[TResult]:
        """Call func, wrapping the result in a CallInfo.
    
        :param func:
            The function to call. Called without arguments.
        :type func: Callable[[], _pytest.runner.TResult]
        :param when:
            The phase in which the function is called.
        :param reraise:
            Exception or exceptions that shall propagate if raised by the
            function, instead of being wrapped in the CallInfo.
        """
        excinfo = None
        start = timing.time()
        precise_start = timing.perf_counter()
        try:
>           result: TResult | None = func()

cls        = <class '_pytest.runner.CallInfo'>
duration   = 0.12177757800236577
excinfo    = <ExceptionInfo PytestUnraisableExceptionWarning('Exception ignored in: <function Connection.__del__ at 0x7fd88ab63740>...=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n') tblen=11>
func       = <function call_and_report.<locals>.<lambda> at 0x7fd883055940>
precise_start = 29088.698029066
precise_stop = 29088.819806644
reraise    = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
result     = None
start      = 1731621293.6572301
stop       = 1731621293.7790093
when       = 'teardown'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:341: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:242: in <lambda>
    lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
        item       = <Function test_tcp_connector_interleave[pyloop]>
        kwds       = {'nextitem': <Function test_tcp_connector_family_is_respected[pyloop]>}
        runtest_hook = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
        firstresult = False
        kwargs     = {'item': <Function test_tcp_connector_interleave[pyloop]>, 'nextitem': <Function test_tcp_connector_family_is_respected[pyloop]>}
        self       = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
        firstresult = False
        hook_name  = 'pytest_runtest_teardown'
        kwargs     = {'item': <Function test_tcp_connector_interleave[pyloop]>, 'nextitem': <Function test_tcp_connector_family_is_respected[pyloop]>}
        methods    = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from 'aiohttp/.direnv/python-3...n' from 'aiohttp/.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py'>>]
        self       = <_pytest.config.PytestPluginManager object at 0x7fd88be35d30>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:97: in pytest_runtest_teardown
    yield from thread_exception_runtest_hook()
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:68: in thread_exception_runtest_hook
    yield
        cm         = <_pytest.threadexception.catch_threading_exception object at 0x7fd883147e30>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:100: in pytest_runtest_teardown
    yield from unraisable_exception_runtest_hook()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    def unraisable_exception_runtest_hook() -> Generator[None]:
        with catch_unraisable_exception() as cm:
            try:
                yield
            finally:
                if cm.unraisable:
                    if cm.unraisable.err_msg is not None:
                        err_msg = cm.unraisable.err_msg
                    else:
                        err_msg = "Exception ignored in"
                    msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
                    msg += "".join(
                        traceback.format_exception(
                            cm.unraisable.exc_type,
                            cm.unraisable.exc_value,
                            cm.unraisable.exc_traceback,
                        )
                    )
>                   warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
E                   pytest.PytestUnraisableExceptionWarning: Exception ignored in: <function Connection.__del__ at 0x7fd88ab63740>
E                   
E                   Traceback (most recent call last):
E                     File "aiohttp/aiohttp/connector.py", line 143, in __del__
E                       _warnings.warn(f"Unclosed connection {self!r}", ResourceWarning, **kwargs)
E                       ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E                   ResourceWarning: Unclosed connection Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>

cm         = <_pytest.unraisableexception.catch_unraisable_exception object at 0x7fd88319b9b0>
err_msg    = 'Exception ignored in'
msg        = 'Exception ignored in: <function Connection.__del__ at 0x7fd88ab63740>\n\nTraceback (most recent call last):\n  File "...ionKey(host=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning
_____ ERROR at teardown of test_tcp_connector_happy_eyeballs[pyloop-0.25] ______
[gw13] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

cls = <class '_pytest.runner.CallInfo'>
func = <function call_and_report.<locals>.<lambda> at 0x7f0f3c5d1da0>
when = 'teardown'
reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)

    @classmethod
    def from_call(
        cls,
        func: Callable[[], TResult],
        when: Literal["collect", "setup", "call", "teardown"],
        reraise: type[BaseException] | tuple[type[BaseException], ...] | None = None,
    ) -> CallInfo[TResult]:
        """Call func, wrapping the result in a CallInfo.
    
        :param func:
            The function to call. Called without arguments.
        :type func: Callable[[], _pytest.runner.TResult]
        :param when:
            The phase in which the function is called.
        :param reraise:
            Exception or exceptions that shall propagate if raised by the
            function, instead of being wrapped in the CallInfo.
        """
        excinfo = None
        start = timing.time()
        precise_start = timing.perf_counter()
        try:
>           result: TResult | None = func()

cls        = <class '_pytest.runner.CallInfo'>
duration   = 0.14997371899880818
excinfo    = <ExceptionInfo PytestUnraisableExceptionWarning('Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>...=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n') tblen=11>
func       = <function call_and_report.<locals>.<lambda> at 0x7f0f3c5d1da0>
precise_start = 29097.925701192
precise_stop = 29098.075674911
reraise    = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
result     = None
start      = 1731621302.8849025
stop       = 1731621303.0348785
when       = 'teardown'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:341: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:242: in <lambda>
    lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
        item       = <Function test_tcp_connector_happy_eyeballs[pyloop-0.25]>
        kwds       = {'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>}
        runtest_hook = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
        firstresult = False
        kwargs     = {'item': <Function test_tcp_connector_happy_eyeballs[pyloop-0.25]>, 'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>}
        self       = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
        firstresult = False
        hook_name  = 'pytest_runtest_teardown'
        kwargs     = {'item': <Function test_tcp_connector_happy_eyeballs[pyloop-0.25]>, 'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>}
        methods    = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from 'aiohttp/.direnv/python-3...n' from 'aiohttp/.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py'>>]
        self       = <_pytest.config.PytestPluginManager object at 0x7f0f46139d30>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:97: in pytest_runtest_teardown
    yield from thread_exception_runtest_hook()
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:68: in thread_exception_runtest_hook
    yield
        cm         = <_pytest.threadexception.catch_threading_exception object at 0x7f0f3c94bbf0>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:100: in pytest_runtest_teardown
    yield from unraisable_exception_runtest_hook()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    def unraisable_exception_runtest_hook() -> Generator[None]:
        with catch_unraisable_exception() as cm:
            try:
                yield
            finally:
                if cm.unraisable:
                    if cm.unraisable.err_msg is not None:
                        err_msg = cm.unraisable.err_msg
                    else:
                        err_msg = "Exception ignored in"
                    msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
                    msg += "".join(
                        traceback.format_exception(
                            cm.unraisable.exc_type,
                            cm.unraisable.exc_value,
                            cm.unraisable.exc_traceback,
                        )
                    )
>                   warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
E                   pytest.PytestUnraisableExceptionWarning: Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>
E                   
E                   Traceback (most recent call last):
E                     File "aiohttp/aiohttp/connector.py", line 143, in __del__
E                       _warnings.warn(f"Unclosed connection {self!r}", ResourceWarning, **kwargs)
E                       ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E                   ResourceWarning: Unclosed connection Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>

cm         = <_pytest.unraisableexception.catch_unraisable_exception object at 0x7f0f3c94bad0>
err_msg    = 'Exception ignored in'
msg        = 'Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>\n\nTraceback (most recent call last):\n  File "...ionKey(host=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning
_ ERROR at teardown of test_http_request_parser_bad_method[py-parser-pyloop-;] _
[gw13] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

cls = <class '_pytest.runner.CallInfo'>
func = <function call_and_report.<locals>.<lambda> at 0x7f0f3c5d3560>
when = 'teardown'
reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)

    @classmethod
    def from_call(
        cls,
        func: Callable[[], TResult],
        when: Literal["collect", "setup", "call", "teardown"],
        reraise: type[BaseException] | tuple[type[BaseException], ...] | None = None,
    ) -> CallInfo[TResult]:
        """Call func, wrapping the result in a CallInfo.
    
        :param func:
            The function to call. Called without arguments.
        :type func: Callable[[], _pytest.runner.TResult]
        :param when:
            The phase in which the function is called.
        :param reraise:
            Exception or exceptions that shall propagate if raised by the
            function, instead of being wrapped in the CallInfo.
        """
        excinfo = None
        start = timing.time()
        precise_start = timing.perf_counter()
        try:
>           result: TResult | None = func()

cls        = <class '_pytest.runner.CallInfo'>
duration   = 0.15063231300155167
excinfo    = <ExceptionInfo PytestUnraisableExceptionWarning('Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>...=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n') tblen=11>
func       = <function call_and_report.<locals>.<lambda> at 0x7f0f3c5d3560>
precise_start = 29098.188133088
precise_stop = 29098.338765401
reraise    = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
result     = None
start      = 1731621303.1473334
stop       = 1731621303.2979698
when       = 'teardown'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:341: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/runner.py:242: in <lambda>
    lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
        item       = <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>
        kwds       = {'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-<]>}
        runtest_hook = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
        firstresult = False
        kwargs     = {'item': <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>, 'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-<]>}
        self       = <HookCaller 'pytest_runtest_teardown'>
.direnv/python-3.13/lib/python3.13/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
        firstresult = False
        hook_name  = 'pytest_runtest_teardown'
        kwargs     = {'item': <Function test_http_request_parser_bad_method[py-parser-pyloop-;]>, 'nextitem': <Function test_http_request_parser_bad_method[py-parser-pyloop-<]>}
        methods    = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from 'aiohttp/.direnv/python-3...n' from 'aiohttp/.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py'>>]
        self       = <_pytest.config.PytestPluginManager object at 0x7f0f46139d30>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:97: in pytest_runtest_teardown
    yield from thread_exception_runtest_hook()
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/threadexception.py:68: in thread_exception_runtest_hook
    yield
        cm         = <_pytest.threadexception.catch_threading_exception object at 0x7f0f3d372210>
.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:100: in pytest_runtest_teardown
    yield from unraisable_exception_runtest_hook()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    def unraisable_exception_runtest_hook() -> Generator[None]:
        with catch_unraisable_exception() as cm:
            try:
                yield
            finally:
                if cm.unraisable:
                    if cm.unraisable.err_msg is not None:
                        err_msg = cm.unraisable.err_msg
                    else:
                        err_msg = "Exception ignored in"
                    msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
                    msg += "".join(
                        traceback.format_exception(
                            cm.unraisable.exc_type,
                            cm.unraisable.exc_value,
                            cm.unraisable.exc_traceback,
                        )
                    )
>                   warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
E                   pytest.PytestUnraisableExceptionWarning: Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>
E                   
E                   Traceback (most recent call last):
E                     File "aiohttp/aiohttp/connector.py", line 143, in __del__
E                       _warnings.warn(f"Unclosed connection {self!r}", ResourceWarning, **kwargs)
E                       ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
E                   ResourceWarning: Unclosed connection Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>

cm         = <_pytest.unraisableexception.catch_unraisable_exception object at 0x7f0f3c99f1d0>
err_msg    = 'Exception ignored in'
msg        = 'Exception ignored in: <function Connection.__del__ at 0x7f0f44e5b740>\n\nTraceback (most recent call last):\n  File "...ionKey(host=\'mocked.host\', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>\n'

.direnv/python-3.13/lib/python3.13/site-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning
=================================== FAILURES ===================================
________________ test_tcp_connector_happy_eyeballs[pyloop-None] ________________
[gw15] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

loop = <_UnixSelectorEventLoop running=False closed=False debug=False>
happy_eyeballs_delay = None

    @pytest.mark.parametrize(
        ("happy_eyeballs_delay"),
        [0.1, 0.25, None],
    )
    async def test_tcp_connector_happy_eyeballs(
        loop: Any, happy_eyeballs_delay: Optional[float]
    ) -> None:
        conn = aiohttp.TCPConnector(happy_eyeballs_delay=happy_eyeballs_delay)
    
        ip1 = "dead::beef::"
        ip2 = "192.168.1.1"
        ips = [ip1, ip2]
        addrs_tried = []
    
        req = ClientRequest(
            "GET",
            URL("https://mocked.host"),
            loop=loop,
        )
    
        async def _resolve_host(host, port, traces=None):
            return [
                {
                    "hostname": host,
                    "host": ip,
                    "port": port,
                    "family": socket.AF_INET6 if ":" in ip else socket.AF_INET,
                    "proto": 0,
                    "flags": socket.AI_NUMERICHOST,
                }
                for ip in ips
            ]
    
        conn._resolve_host = _resolve_host
    
        os_error = False
        connected = False
    
        async def sock_connect(*args, **kwargs):
            addr = args[1]
            nonlocal os_error
    
            addrs_tried.append(addr)
    
            if addr[0] == ip1:
                os_error = True
                raise OSError
    
        async def create_connection(*args, **kwargs):
            sock: socket.socket = kwargs["sock"]
    
            # Close the socket since we are not actually connecting
            # and we don't want to leak it.
            sock.close()
    
            nonlocal connected
            connected = True
            tr = create_mocked_conn(loop)
            pr = create_mocked_conn(loop)
            return tr, pr
    
        conn._loop.sock_connect = sock_connect
        conn._loop.create_connection = create_connection
    
        established_connection = await conn.connect(req, [], ClientTimeout())
    
>       assert addrs_tried == [(ip1, 443, 0, 0), (ip2, 443)]
E       AssertionError: assert [('192.168.1.1', 443)] == [('dead::beef...68.1.1', 443)]
E         
E         At index 0 diff: ('192.168.1.1', 443) != ('dead::beef::', 443, 0, 0)
E         Right contains one more item: ('192.168.1.1', 443)
E         Use -v to get more diff

_resolve_host = <function test_tcp_connector_happy_eyeballs.<locals>._resolve_host at 0x7fd883055c60>
addrs_tried = [('192.168.1.1', 443)]
conn       = <aiohttp.connector.TCPConnector object at 0x7fd88303d400>
connected  = True
create_connection = <function test_tcp_connector_happy_eyeballs.<locals>.create_connection at 0x7fd883055e40>
established_connection = Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>
happy_eyeballs_delay = None
ip1        = 'dead::beef::'
ip2        = '192.168.1.1'
ips        = ['dead::beef::', '192.168.1.1']
loop       = <_UnixSelectorEventLoop running=False closed=False debug=False>
os_error   = False
req        = <aiohttp.client_reqrep.ClientRequest object at 0x7fd88303da90>
sock_connect = <function test_tcp_connector_happy_eyeballs.<locals>.sock_connect at 0x7fd883055d00>

tests/test_connector.py:879: AssertionError
________________ test_tcp_connector_happy_eyeballs[pyloop-0.1] _________________
[gw13] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

loop = <_UnixSelectorEventLoop running=False closed=False debug=False>
happy_eyeballs_delay = 0.1

    @pytest.mark.parametrize(
        ("happy_eyeballs_delay"),
        [0.1, 0.25, None],
    )
    async def test_tcp_connector_happy_eyeballs(
        loop: Any, happy_eyeballs_delay: Optional[float]
    ) -> None:
        conn = aiohttp.TCPConnector(happy_eyeballs_delay=happy_eyeballs_delay)
    
        ip1 = "dead::beef::"
        ip2 = "192.168.1.1"
        ips = [ip1, ip2]
        addrs_tried = []
    
        req = ClientRequest(
            "GET",
            URL("https://mocked.host"),
            loop=loop,
        )
    
        async def _resolve_host(host, port, traces=None):
            return [
                {
                    "hostname": host,
                    "host": ip,
                    "port": port,
                    "family": socket.AF_INET6 if ":" in ip else socket.AF_INET,
                    "proto": 0,
                    "flags": socket.AI_NUMERICHOST,
                }
                for ip in ips
            ]
    
        conn._resolve_host = _resolve_host
    
        os_error = False
        connected = False
    
        async def sock_connect(*args, **kwargs):
            addr = args[1]
            nonlocal os_error
    
            addrs_tried.append(addr)
    
            if addr[0] == ip1:
                os_error = True
                raise OSError
    
        async def create_connection(*args, **kwargs):
            sock: socket.socket = kwargs["sock"]
    
            # Close the socket since we are not actually connecting
            # and we don't want to leak it.
            sock.close()
    
            nonlocal connected
            connected = True
            tr = create_mocked_conn(loop)
            pr = create_mocked_conn(loop)
            return tr, pr
    
        conn._loop.sock_connect = sock_connect
        conn._loop.create_connection = create_connection
    
        established_connection = await conn.connect(req, [], ClientTimeout())
    
>       assert addrs_tried == [(ip1, 443, 0, 0), (ip2, 443)]
E       AssertionError: assert [('192.168.1.1', 443)] == [('dead::beef...68.1.1', 443)]
E         
E         At index 0 diff: ('192.168.1.1', 443) != ('dead::beef::', 443, 0, 0)
E         Right contains one more item: ('192.168.1.1', 443)
E         Use -v to get more diff

_resolve_host = <function test_tcp_connector_happy_eyeballs.<locals>._resolve_host at 0x7f0f3c5d3e20>
addrs_tried = [('192.168.1.1', 443)]
conn       = <aiohttp.connector.TCPConnector object at 0x7f0f3d39d6e0>
connected  = True
create_connection = <function test_tcp_connector_happy_eyeballs.<locals>.create_connection at 0x7f0f3c5d3a60>
established_connection = Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>
happy_eyeballs_delay = 0.1
ip1        = 'dead::beef::'
ip2        = '192.168.1.1'
ips        = ['dead::beef::', '192.168.1.1']
loop       = <_UnixSelectorEventLoop running=False closed=False debug=False>
os_error   = False
req        = <aiohttp.client_reqrep.ClientRequest object at 0x7f0f3d3cf850>
sock_connect = <function test_tcp_connector_happy_eyeballs.<locals>.sock_connect at 0x7f0f3c5d18a0>

tests/test_connector.py:879: AssertionError
________________ test_tcp_connector_happy_eyeballs[pyloop-0.25] ________________
[gw13] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

loop = <_UnixSelectorEventLoop running=False closed=False debug=False>
happy_eyeballs_delay = 0.25

    @pytest.mark.parametrize(
        ("happy_eyeballs_delay"),
        [0.1, 0.25, None],
    )
    async def test_tcp_connector_happy_eyeballs(
        loop: Any, happy_eyeballs_delay: Optional[float]
    ) -> None:
        conn = aiohttp.TCPConnector(happy_eyeballs_delay=happy_eyeballs_delay)
    
        ip1 = "dead::beef::"
        ip2 = "192.168.1.1"
        ips = [ip1, ip2]
        addrs_tried = []
    
        req = ClientRequest(
            "GET",
            URL("https://mocked.host"),
            loop=loop,
        )
    
        async def _resolve_host(host, port, traces=None):
            return [
                {
                    "hostname": host,
                    "host": ip,
                    "port": port,
                    "family": socket.AF_INET6 if ":" in ip else socket.AF_INET,
                    "proto": 0,
                    "flags": socket.AI_NUMERICHOST,
                }
                for ip in ips
            ]
    
        conn._resolve_host = _resolve_host
    
        os_error = False
        connected = False
    
        async def sock_connect(*args, **kwargs):
            addr = args[1]
            nonlocal os_error
    
            addrs_tried.append(addr)
    
            if addr[0] == ip1:
                os_error = True
                raise OSError
    
        async def create_connection(*args, **kwargs):
            sock: socket.socket = kwargs["sock"]
    
            # Close the socket since we are not actually connecting
            # and we don't want to leak it.
            sock.close()
    
            nonlocal connected
            connected = True
            tr = create_mocked_conn(loop)
            pr = create_mocked_conn(loop)
            return tr, pr
    
        conn._loop.sock_connect = sock_connect
        conn._loop.create_connection = create_connection
    
        established_connection = await conn.connect(req, [], ClientTimeout())
    
>       assert addrs_tried == [(ip1, 443, 0, 0), (ip2, 443)]
E       AssertionError: assert [('192.168.1.1', 443)] == [('dead::beef...68.1.1', 443)]
E         
E         At index 0 diff: ('192.168.1.1', 443) != ('dead::beef::', 443, 0, 0)
E         Right contains one more item: ('192.168.1.1', 443)
E         Use -v to get more diff

_resolve_host = <function test_tcp_connector_happy_eyeballs.<locals>._resolve_host at 0x7f0f3c5d3ec0>
addrs_tried = [('192.168.1.1', 443)]
conn       = <aiohttp.connector.TCPConnector object at 0x7f0f3d39e060>
connected  = True
create_connection = <function test_tcp_connector_happy_eyeballs.<locals>.create_connection at 0x7f0f3c5d1c60>
established_connection = Connection<ConnectionKey(host='mocked.host', port=443, is_ssl=True, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>
happy_eyeballs_delay = 0.25
ip1        = 'dead::beef::'
ip2        = '192.168.1.1'
ips        = ['dead::beef::', '192.168.1.1']
loop       = <_UnixSelectorEventLoop running=False closed=False debug=False>
os_error   = False
req        = <aiohttp.client_reqrep.ClientRequest object at 0x7f0f3c9e8250>
sock_connect = <function test_tcp_connector_happy_eyeballs.<locals>.sock_connect at 0x7f0f3c5d1b20>

tests/test_connector.py:879: AssertionError
_____________________ test_test_server_hostnames[::1-::1] ______________________
[gw3] linux -- Python 3.13.0 aiohttp/.direnv/python-3.13/bin/python

hostname = '::1', expected_host = '::1'
loop = <_UnixSelectorEventLoop running=False closed=False debug=False>

    @pytest.mark.parametrize(
        ("hostname", "expected_host"),
        [("127.0.0.1", "127.0.0.1"), ("localhost", "127.0.0.1"), ("::1", "::1")],
    )
    async def test_test_server_hostnames(hostname, expected_host, loop) -> None:
        app = _create_example_app()
        server = TestServer(app, host=hostname, loop=loop)
>       async with server:

app        = <Application 0x7f6823881220>
expected_host = '::1'
hostname   = '::1'
loop       = <_UnixSelectorEventLoop running=False closed=False debug=False>
server     = <aiohttp.test_utils.TestServer object at 0x7f682388d440>

tests/test_test_utils.py:425: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
aiohttp/test_utils.py:226: in __aenter__
    await self.start_server(loop=self._loop)
        self       = <aiohttp.test_utils.TestServer object at 0x7f682388d440>
aiohttp/test_utils.py:151: in start_server
    _sock = self.socket_factory(self.host, self.port, family)
        absolute_host = '[::1]'
        family     = <AddressFamily.AF_INET6: 10>
        kwargs     = {}
        loop       = <_UnixSelectorEventLoop running=False closed=False debug=False>
        self       = <aiohttp.test_utils.TestServer object at 0x7f682388d440>
        version    = 6
aiohttp/test_utils.py:89: in get_port_socket
    s = socket.socket(family, socket.SOCK_STREAM)
        family     = <AddressFamily.AF_INET6: 10>
        host       = '::1'
        port       = 0
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <socket.socket fd=-1, family=0, type=0, proto=0>
family = <AddressFamily.AF_INET6: 10>, type = <SocketKind.SOCK_STREAM: 1>
proto = 0, fileno = None

    def __init__(self, family=-1, type=-1, proto=-1, fileno=None):
        # For user code address family and type values are IntEnum members, but
        # for the underlying _socket.socket they're just integers. The
        # constructor of _socket.socket converts the given argument to an
        # integer automatically.
        if fileno is None:
            if family == -1:
                family = AF_INET
            if type == -1:
                type = SOCK_STREAM
            if proto == -1:
                proto = 0
>       _socket.socket.__init__(self, family, type, proto, fileno)
E       OSError: [Errno 97] Address family not supported by protocol

family     = <AddressFamily.AF_INET6: 10>
fileno     = None
proto      = 0
self       = <socket.socket fd=-1, family=0, type=0, proto=0>
type       = <SocketKind.SOCK_STREAM: 1>

/nix/store/b5w6mr7v3mnl9s163yimdksddnwhvqyl-python3-3.13.0/lib/python3.13/socket.py:233: OSError

---------- coverage: platform linux, python 3.13.0-final-0 -----------
Name                                      Stmts   Miss Branch BrPart  Cover
---------------------------------------------------------------------------
aiohttp/__init__.py                          27      2      2      0    93%
aiohttp/_websocket/__init__.py                0      0      0      0   100%
aiohttp/_websocket/helpers.py                77      0     40      0   100%
aiohttp/_websocket/models.py                 51      0      0      0   100%
aiohttp/_websocket/reader.py                  6      0      0      0   100%
aiohttp/_websocket/reader_py.py             268    226    106      0    11%
aiohttp/_websocket/writer.py                 73      0     24      0   100%
aiohttp/abc.py                              103      0     66      0   100%
aiohttp/base_protocol.py                     71      0     26      0   100%
aiohttp/client.py                           562     12    244      5    98%
aiohttp/client_exceptions.py                156      2     46      0    99%
aiohttp/client_proto.py                     164      4     66      5    96%
aiohttp/client_reqrep.py                    699      4    342      9    99%
aiohttp/client_ws.py                        277      5     98      4    98%
aiohttp/compression_utils.py                 70      4     22      3    92%
aiohttp/connector.py                        767     51    366     19    92%
aiohttp/cookiejar.py                        277      6    136      1    98%
aiohttp/formdata.py                          97      2     48      2    97%
aiohttp/hdrs.py                              94      0      0      0   100%
aiohttp/helpers.py                          468      5    182     12    97%
aiohttp/http.py                              11      0      0      0   100%
aiohttp/http_exceptions.py                   50      0      4      0   100%
aiohttp/http_parser.py                      512     13    214     14    95%
aiohttp/http_websocket.py                     6      0      0      0   100%
aiohttp/http_writer.py                      140      8     60      1    94%
aiohttp/log.py                                7      0      0      0   100%
aiohttp/multipart.py                        625     14    280     16    96%
aiohttp/payload.py                          251      0     92      3    99%
aiohttp/payload_streamer.py                  31      1      4      0    97%
aiohttp/pytest_plugin.py                    163      9     64      2    94%
aiohttp/resolver.py                          79      1     26      1    98%
aiohttp/streams.py                          388      5    144      5    98%
aiohttp/tcp_helpers.py                       19      0      8      1    96%
aiohttp/test_utils.py                       324      2     74      5    98%
aiohttp/tracing.py                          191      0     64      0   100%
aiohttp/typedefs.py                          24      0      0      0   100%
aiohttp/web.py                              127      0     56      1    99%
aiohttp/web_app.py                          292      1    106      1    99%
aiohttp/web_exceptions.py                   157      0     10      0   100%
aiohttp/web_fileresponse.py                 160      0     53      1    99%
aiohttp/web_log.py                          103      0     40      0   100%
aiohttp/web_middlewares.py                   59      0     24      0   100%
aiohttp/web_protocol.py                     367     18    159     26    92%
aiohttp/web_request.py                      446      6    218      4    98%
aiohttp/web_response.py                     487      3    276      4    99%
aiohttp/web_routedef.py                     100      0     12      0   100%
aiohttp/web_runner.py                       213     17     66      3    92%
aiohttp/web_server.py                        42      0     12      0   100%
aiohttp/web_urldispatcher.py                742      9    245      6    98%
aiohttp/web_ws.py                           391     12    146     12    96%
aiohttp/worker.py                           126      7     32      3    94%
tests/autobahn/test_autobahn.py              60     38     24      0    45%
tests/conftest.py                           142     16     65      6    88%
tests/test_base_protocol.py                 200      0      8      0   100%
tests/test_benchmarks_client.py             153      0     34      0   100%
tests/test_benchmarks_client_request.py      52      0     12      0   100%
tests/test_benchmarks_client_ws.py           66      0     18      0   100%
tests/test_benchmarks_cookiejar.py           14      0      2      0   100%
tests/test_benchmarks_http_websocket.py      71      0     24      0   100%
tests/test_benchmarks_http_writer.py         11      0      4      0   100%
tests/test_circular_imports.py               29      0     13      0   100%
tests/test_classbasedview.py                 39      2      4      0    95%
tests/test_client_connection.py              94      0     14      1    99%
tests/test_client_exceptions.py             199      0     24      0   100%
tests/test_client_fingerprint.py             59      0     24      0   100%
tests/test_client_functional.py            2630     30    514     10    99%
tests/test_client_proto.py                   99      0      0      0   100%
tests/test_client_request.py                843      1    128      0    99%
tests/test_client_response.py               480      5     38      1    99%
tests/test_client_session.py                593      7    127      4    98%
tests/test_client_ws.py                     489      0    158      0   100%
tests/test_client_ws_functional.py          834     19     84      4    97%
tests/test_compression_utils.py              15      0      0      0   100%
tests/test_connector.py                    2121     59    340     10    97%
tests/test_cookiejar.py                     466      0     68      2    99%
tests/test_flowcontrol_streams.py            83      0      4      0   100%
tests/test_formdata.py                       86      0     24      0   100%
tests/test_helpers.py                       454     10    170      8    97%
tests/test_http_exceptions.py               109      0     10      0   100%
tests/test_http_parser.py                  1106     17    218      0    98%
tests/test_http_writer.py                   260      0     20      0   100%
tests/test_imports.py                        40     17     16      0    59%
tests/test_loop.py                           36      2      4      0    95%
tests/test_multipart.py                     829      0    226      1    99%
tests/test_multipart_helpers.py             446     19     82      0    95%
tests/test_payload.py                        93      3      8      0    97%
tests/test_proxy.py                         325      0    110      0   100%
tests/test_proxy_functional.py              462    175    110      3    66%
tests/test_pytest_plugin.py                  27      0      0      0   100%
tests/test_resolver.py                      231      4     78      0    99%
tests/test_route_def.py                     210     20     26      0    92%
tests/test_run_app.py                       577     19    100     13    95%
tests/test_streams.py                      1077      0    128      0   100%
tests/test_tcp_helpers.py                    52      6     14      3    83%
tests/test_test_utils.py                    274      4     76      7    97%
tests/test_tracing.py                        48      0      2      0   100%
tests/test_urldispatch.py                   859     12    102      1    98%
tests/test_web_app.py                       453      4     56      0    99%
tests/test_web_cli.py                        94      0     28      0   100%
tests/test_web_exceptions.py                179      0     38      0   100%
tests/test_web_functional.py               1605     28    206      3    98%
tests/test_web_log.py                       132      2     16      0    99%
tests/test_web_middleware.py                284      3     54      2    99%
tests/test_web_request.py                   513      0     34      0   100%
tests/test_web_request_handler.py            42      1      2      0    98%
tests/test_web_response.py                  914      3     90      1    99%
tests/test_web_runner.py                    151      9     32      0    94%
tests/test_web_sendfile.py                   84      0      0      0   100%
tests/test_web_sendfile_functional.py       674      5     72      0    99%
tests/test_web_server.py                    165      1     16      0    99%
tests/test_web_urldispatcher.py             524      2     82      1    99%
tests/test_web_websocket.py                 444      2     82      0    99%
tests/test_web_websocket_functional.py      862     51     46      4    94%
tests/test_websocket_data_queue.py           23      0      6      0   100%
tests/test_websocket_handshake.py           152      0     26      0   100%
tests/test_websocket_parser.py              365      9     58      1    98%
tests/test_websocket_writer.py               97      0     16      0   100%
tests/test_worker.py                        187      2     20      1    99%
---------------------------------------------------------------------------
TOTAL                                     36327   1056   8538    256    97%

============================= slowest 10 durations =============================
9.53s call     tests/test_run_app.py::TestShutdown::test_shutdown_new_conn_rejected
4.01s call     tests/test_run_app.py::TestShutdown::test_shutdown_pending_handler_responds
2.52s call     tests/test_run_app.py::TestShutdown::test_shutdown_wait_for_handler
2.41s call     tests/test_run_app.py::TestShutdown::test_shutdown_handler_cancellation_suppressed
2.02s call     tests/test_client_functional.py::test_read_timeout_between_chunks[pyloop]
2.01s call     tests/test_client_functional.py::test_set_cookies_max_age[pyloop]
1.82s call     tests/test_pytest_plugin.py::test_aiohttp_plugin
1.62s call     tests/test_run_app.py::TestShutdown::test_shutdown_timeout_handler
1.51s call     tests/test_run_app.py::TestShutdown::test_shutdown_timeout_not_reached
1.40s call     tests/test_circular_imports.py::test_no_warnings[aiohttp.pytest_plugin]
=========================== short test summary info ============================
SKIPPED [1] tests/test_connector.py:3054: Proactor Event loop present only in Windows
SKIPPED [1] tests/test_connector.py:3062: Proactor Event loop present only in Windows
SKIPPED [1] tests/test_connector.py:3073: Proactor Event loop present only in Windows
SKIPPED [1] tests/test_client_session.py:949: The check is applied in DEBUG mode only
SKIPPED [1] tests/test_connector.py:3271: Proactor Event loop present only in Windows
SKIPPED [1] tests/test_multipart_helpers.py:446: should raise decoding error: %82 is invalid for latin1
SKIPPED [1] tests/test_multipart_helpers.py:455: should raise decoding error: %E4 is invalid for utf-8
SKIPPED [1] tests/test_multipart_helpers.py:510: urllib.parse.unquote is tolerate to standalone % chars
SKIPPED [1] tests/test_multipart_helpers.py:519: urllib.parse.unquote is tolerate to standalone % chars
SKIPPED [1] tests/test_multipart_helpers.py:99: need more smart parser which respects quoted text
SKIPPED [1] tests/test_proxy_functional.py:386: we need to reconsider how we test this
SKIPPED [1] tests/test_proxy_functional.py:407: we need to reconsider how we test this
SKIPPED [1] tests/test_run_app.py:595: IPv6 is not available
SKIPPED [1] tests/test_resolver.py:404: aiodns <3.2.0 required
SKIPPED [1] tests/test_tcp_helpers.py:52: IPv6 is not available
SKIPPED [1] tests/test_proxy_functional.py:129: asyncio on this python supports TLS in TLS
SKIPPED [1] tests/test_web_app.py:365: The check is applied in DEBUG mode only
SKIPPED [1] tests/test_web_runner.py:121: Proactor Event loop present only in Windows
SKIPPED [1] tests/test_web_runner.py:133: Proactor Event loop present only in Windows
XFAIL tests/autobahn/test_autobahn.py::test_client
XFAIL tests/autobahn/test_autobahn.py::test_server
XFAIL tests/test_connector.py::test_del_with_scheduled_cleanup[pyloop]
XFAIL tests/test_client_functional.py::test_broken_connection[pyloop]
XFAIL tests/test_http_parser.py::test_parse_unusual_request_line[c-parser-pyloop] - Regression test for Py parser. May match C behaviour later.
XFAIL tests/test_http_parser.py::test_parse_uri_utf8[c-parser-pyloop] - reason: Not valid HTTP. Maybe update py-parser to reject later.
XFAIL tests/test_http_parser.py::test_http_request_parser_utf8_request_line[c-parser-pyloop] - Regression test for Py parser. May match C behaviour later.
XFAIL tests/test_web_functional.py::test_http10_keep_alive_default[pyloop]
ERROR tests/test_connector.py::test_tcp_connector_interleave[pyloop] - pytest...
ERROR tests/test_connector.py::test_tcp_connector_happy_eyeballs[pyloop-0.25]
ERROR tests/test_http_parser.py::test_http_request_parser_bad_method[py-parser-pyloop-;]
FAILED tests/test_connector.py::test_tcp_connector_happy_eyeballs[pyloop-None]
FAILED tests/test_connector.py::test_tcp_connector_happy_eyeballs[pyloop-0.1]
FAILED tests/test_connector.py::test_tcp_connector_happy_eyeballs[pyloop-0.25]
FAILED tests/test_test_utils.py::test_test_server_hostnames[::1-::1] - OSErro...
======= 4 failed, 3399 passed, 19 skipped, 8 xfailed, 3 errors in 57.44s =======
make: *** [Makefile:105: test] Error 1

Python Version

$ python --version
Python 3.13.0

aiohttp Version

$ python -m pip show aiohttp
Name: aiohttp
Version: 3.11.1
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Author: 
Author-email: 
License: Apache 2
Location: aiohttp/.direnv/python-3.13/lib/python3.13/site-packages
Editable project location: aiohttp
Requires: aiohappyeyeballs, aiosignal, attrs, frozenlist, multidict, propcache, yarl
Required-by:

multidict Version

$ python -m pip show multidict
Name: multidict
Version: 6.1.0
Summary: multidict implementation
Home-page: https://github.com/aio-libs/multidict
Author: Andrew Svetlov
Author-email: [email protected]
License: Apache 2
Location: aiohttp/.direnv/python-3.13/lib/python3.13/site-packages
Requires: 
Required-by: aiohttp, yarl

propcache Version

$ python -m pip show propcache
Name: propcache
Version: 0.2.0
Summary: Accelerated property cache
Home-page: https://github.com/aio-libs/propcache
Author: Andrew Svetlov
Author-email: [email protected]
License: Apache-2.0
Location: aiohttp/.direnv/python-3.13/lib/python3.13/site-packages
Requires: 
Required-by: aiohttp, yarl

yarl Version

$ python -m pip show yarl
Name: yarl
Version: 1.17.1
Summary: Yet another URL library
Home-page: https://github.com/aio-libs/yarl
Author: Andrew Svetlov
Author-email: [email protected]
License: Apache-2.0
Location: aiohttp/.direnv/python-3.13/lib/python3.13/site-packages
Requires: idna, multidict, propcache
Required-by: aiohttp

OS

NixOS

Related component

Server, Client

Additional context

No response

Code of Conduct

• I agree to follow the aio-libs Code of Conduct

[bdraco]

We don't currently run the CI with IPv6 disabled so these are easy to miss.

Triage: not a regression in 3.11. Likely broken for a long time.

[Dreamsorcerer]

Isn't that expected? All the failures are testing IPv6 addresses...

[bdraco]

They are expected to not work with IPv6, but test_run_app.py has HAS_IPV6 and disables the tests that need ipv6 with skipif but connector (and maybe others do not) so I'm not sure if the intent was to skip tests that require IPv6 or if they should fail.

[Dreamsorcerer]

Right, I guess we should add a skipif to those 4 tests then.

[asvetlov]

IIRC, existing skips were added after similar bug report.
We never check non-IPv6 run explicitly.