@contextlib.contextmanager
    def map_httpcore_exceptions() -&gt; typing.Iterator[None]:
        try:
&gt;           yield
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_transports\default.py:72:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_transports\default.py:377: in handle_async_request
    resp = await self._pool.handle_async_request(req)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = &lt;AsyncConnectionPool [Requests: 0 active, 0 queued | Connections: 0 active, 1 idle]&gt;
request = &lt;Request [b'GET']&gt;
    async def handle_async_request(self, request: Request) -&gt; Response:
        """
        Send an HTTP request, and return an HTTP response.
        This is the core implementation that is called into by `.request()` or `.stream()`.
        """
        scheme = request.url.scheme.decode()
        if scheme == "":
&gt;           raise UnsupportedProtocol(
                "Request URL is missing an 'http://' or 'https://' protocol."
            )
E           httpcore.UnsupportedProtocol: Request URL is missing an 'http://' or 'https://' protocol.
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpcore\_async\connection_pool.py:167: UnsupportedProtocol
The above exception was the direct cause of the following exception:
self = &lt;tests.auxil.networking.NonchalantHttpxRequest object at 0x00000211406646E0&gt;
url = 'None', method = 'GET', request_data = None, read_timeout = 5.0
write_timeout = 5.0, connect_timeout = 5.0, pool_timeout = 1.0
    async def do_request(
        self,
        url: str,
        method: str,
        request_data: Optional[RequestData] = None,
        read_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        write_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        connect_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        pool_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
    ) -&gt; tuple[int, bytes]:
        """See :meth:`BaseRequest.do_request`."""
        if self._client.is_closed:
            raise RuntimeError("This HTTPXRequest is not initialized!")
        files = request_data.multipart_data if request_data else None
        data = request_data.json_parameters if request_data else None
        # If user did not specify timeouts (for e.g. in a bot method), use the default ones when we
        # created this instance.
        if isinstance(read_timeout, DefaultValue):
            read_timeout = self._client.timeout.read
        if isinstance(connect_timeout, DefaultValue):
            connect_timeout = self._client.timeout.connect
        if isinstance(pool_timeout, DefaultValue):
            pool_timeout = self._client.timeout.pool
        if isinstance(write_timeout, DefaultValue):
            write_timeout = self._client.timeout.write if not files else self._media_write_timeout
        timeout = httpx.Timeout(
            connect=connect_timeout,
            read=read_timeout,
            write=write_timeout,
            pool=pool_timeout,
        )
        try:
&gt;           res = await self._client.request(
                method=method,
                url=url,
                headers={"User-Agent": self.USER_AGENT},
                timeout=timeout,
                files=files,
                data=data,
            )
telegram\request\_httpxrequest.py:293:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_client.py:1585: in request
    return await self.send(request, auth=auth, follow_redirects=follow_redirects)
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_client.py:1674: in send
    response = await self._send_handling_auth(
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_client.py:1702: in _send_handling_auth
    response = await self._send_handling_redirects(
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_client.py:1739: in _send_handling_redirects
    response = await self._send_single_request(request)
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_client.py:1776: in _send_single_request
    response = await transport.handle_async_request(request)
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_transports\default.py:376: in handle_async_request
    with map_httpcore_exceptions():
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\contextlib.py:162: in __exit__
    self.gen.throw(value)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
    @contextlib.contextmanager
    def map_httpcore_exceptions() -&gt; typing.Iterator[None]:
        try:
            yield
        except Exception as exc:
            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: no cover
                raise
            message = str(exc)
&gt;           raise mapped_exc(message) from exc
E           httpx.UnsupportedProtocol: Request URL is missing an 'http://' or 'https://' protocol.
C:\hostedtoolcache\windows\Python\3.13.0\x64\Lib\site-packages\httpx\_transports\default.py:89: UnsupportedProtocol
The above exception was the direct cause of the following exception:
self = &lt;tests._files.test_inputfile.TestInputFileWithRequest object at 0x000002113D80E990&gt;
bot = PytestExtBot[token=5737018356:AAH138SuiKQF0LDCWsfgWeXfjJ5d63kCWLA]
chat_id = '675666224'
    async def test_send_bytes(self, bot, chat_id):
        # We test this here and not at the respective test modules because it's not worth
        # duplicating the test for the different methods
        message = await bot.send_document(chat_id, data_file("text_file.txt").read_bytes())
        out = BytesIO()
&gt;       await (await message.document.get_file()).download_to_memory(out=out)
tests\_files\test_inputfile.py:217:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
telegram\_files\file.py:264: in download_to_memory
    buf = await self.get_bot().request.retrieve(
telegram\request\_baserequest.py:254: in retrieve
    return await self._request_wrapper(
tests\auxil\networking.py:48: in _request_wrapper
    return await super()._request_wrapper(
telegram\request\_baserequest.py:334: in _request_wrapper
    code, payload = await self.do_request(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = &lt;tests.auxil.networking.NonchalantHttpxRequest object at 0x00000211406646E0&gt;
url = 'None', method = 'GET', request_data = None, read_timeout = 5.0
write_timeout = 5.0, connect_timeout = 5.0, pool_timeout = 1.0
    async def do_request(
        self,
        url: str,
        method: str,
        request_data: Optional[RequestData] = None,
        read_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        write_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        connect_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
        pool_timeout: ODVInput[float] = BaseRequest.DEFAULT_NONE,
    ) -&gt; tuple[int, bytes]:
        """See :meth:`BaseRequest.do_request`."""
        if self._client.is_closed:
            raise RuntimeError("This HTTPXRequest is not initialized!")
        files = request_data.multipart_data if request_data else None
        data = request_data.json_parameters if request_data else None
        # If user did not specify timeouts (for e.g. in a bot method), use the default ones when we
        # created this instance.
        if isinstance(read_timeout, DefaultValue):
            read_timeout = self._client.timeout.read
        if isinstance(connect_timeout, DefaultValue):
            connect_timeout = self._client.timeout.connect
        if isinstance(pool_timeout, DefaultValue):
            pool_timeout = self._client.timeout.pool
        if isinstance(write_timeout, DefaultValue):
            write_timeout = self._client.timeout.write if not files else self._media_write_timeout
        timeout = httpx.Timeout(
            connect=connect_timeout,
            read=read_timeout,
            write=write_timeout,
            pool=pool_timeout,
        )
        try:
            res = await self._client.request(
                method=method,
                url=url,
                headers={"User-Agent": self.USER_AGENT},
                timeout=timeout,
                files=files,
                data=data,
            )
        except httpx.TimeoutException as err:
            if isinstance(err, httpx.PoolTimeout):
                raise TimedOut(
                    message=(
                        "Pool timeout: All connections in the connection pool are occupied. "
                        "Request was *not* sent to Telegram. Consider adjusting the connection "
                        "pool size or the pool timeout."
                    )
                ) from err
            raise TimedOut from err
        except httpx.HTTPError as err:
            # HTTPError must come last as its the base httpx exception class
            # TODO p4: do something smart here; for now just raise NetworkError
            # We include the class name for easier debugging. Especially useful if the error
            # message of `err` is empty.
&gt;           raise NetworkError(f"httpx.{err.__class__.__name__}: {err}") from err
E           telegram.error.NetworkError: httpx.UnsupportedProtocol: Request URL is missing an 'http://' or 'https://' protocol.
telegram\request\_httpxrequest.py:317: NetworkError