issue_comments

This pattern should work (for the http server at least): python # Loop until port 8041 serves traffic while True: try: httpx.get("http://localhost:8041/") break except httpx.ConnectError: time.sleep(0.1)

Here's the code that starts those various servers: https://github.com/simonw/datasette/blob/613ad05c095f92653221db267ef53d54d00cdfbb/tests/conftest.py#L104-L177

I don't like those time.sleep(1.5) lines much - I'm going to try polling for readiness instead.

Also: ``` @pytest.mark.serial @pytest.mark.skipif( not hasattr(socket, "AF_UNIX"), reason="Requires socket.AF_UNIX support" ) def test_serve_unix_domain_socket(ds_unix_domain_socket_server): _, uds = ds_unix_domain_socket_server transport = httpx.HTTPTransport(uds=uds) client = httpx.Client(transport=transport)

  response = client.get("http://localhost/_memory.json")

/home/runner/work/datasette/datasette/tests/test_cli_serve_server.py:35:

/opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:1039: in get return self.request( /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:815: in request return self.send(request, auth=auth, follow_redirects=follow_redirects) /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:902: in send response = self._send_handling_auth( /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:930: in _send_handling_auth response = self._send_handling_redirects( /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:967: in _send_handling_redirects response = self._send_single_request(request) /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_client.py:1003: in _send_single_request response = transport.handle_request(request) /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/site-packages/httpx/_transports/default.py:217: in handle_request with map_httpcore_exceptions(): /opt/hostedtoolcache/Python/3.10.8/x64/lib/python3.10/contextlib.py:153: in exit self.gen.throw(typ, value, traceback)

@contextlib.contextmanager
def map_httpcore_exceptions() -> typing.Iterator[None]:
    try:
        yield
    except Exception as exc:  # noqa: PIE-786
        mapped_exc = None

        for from_exc, to_exc in HTTPCORE_EXC_MAP.items():
            if not isinstance(exc, from_exc):
                continue
            # We want to map to the most specific exception we can find.
            # Eg if `exc` is an `httpcore.ReadTimeout`, we want to map to
            # `httpx.ReadTimeout`, not just `httpx.TimeoutException`.
            if mapped_exc is None or issubclass(to_exc, mapped_exc):
                mapped_exc = to_exc

        if mapped_exc is None:  # pragma: nocover
            raise

        message = str(exc)

      raise mapped_exc(message) from exc

E httpx.ConnectError: [Errno 2] No such file or directory ```