diff --git a/onvif/client.py b/onvif/client.py
index 176d0df..fb072c1 100644
--- a/onvif/client.py
+++ b/onvif/client.py
@@ -248,12 +248,12 @@ def __init__(
         self.dt_diff = dt_diff
         self.binding_name = binding_name
         # Create soap client
-        connector = TCPConnector(
+        self._connector = TCPConnector(
             ssl=_NO_VERIFY_SSL_CONTEXT,
             keepalive_timeout=KEEPALIVE_EXPIRY,
         )
-        session = ClientSession(
-            connector=connector,
+        self._session = ClientSession(
+            connector=self._connector,
             timeout=aiohttp.ClientTimeout(
                 total=_DEFAULT_TIMEOUT,
                 connect=_CONNECT_TIMEOUT,
@@ -262,12 +262,12 @@ def __init__(
         )
         self.transport = (
             AsyncTransportProtocolErrorHandler(
-                session=session,
+                session=self._session,
                 verify_ssl=False,
             )
             if no_cache
             else AIOHTTPTransport(
-                session=session,
+                session=self._session,
                 verify_ssl=False,
                 cache=SqliteCache(),
             )
@@ -316,6 +316,8 @@ async def setup(self):
     async def close(self):
         """Close the transport."""
         await self.transport.aclose()
+        await self._session.close()
+        await self._connector.close()
 
     @staticmethod
     @safe_func
diff --git a/onvif/managers.py b/onvif/managers.py
index 8f14030..cc60add 100644
--- a/onvif/managers.py
+++ b/onvif/managers.py
@@ -62,7 +62,7 @@ def __init__(
     @property
     def closed(self) -> bool:
         """Return True if the manager is closed."""
-        return not self._subscription or self._subscription.transport.client.is_closed
+        return not self._subscription or self._subscription.transport.session.closed
 
     async def start(self) -> None:
         """Setup the manager."""
diff --git a/onvif/zeep_aiohttp.py b/onvif/zeep_aiohttp.py
index 23d3f2f..1ec0acf 100644
--- a/onvif/zeep_aiohttp.py
+++ b/onvif/zeep_aiohttp.py
@@ -11,7 +11,6 @@
 from zeep.utils import get_version
 from zeep.wsdl.utils import etree_to_string
 
-import aiohttp
 import httpx
 from aiohttp import ClientResponse, ClientSession
 from requests import Response
@@ -160,15 +159,14 @@ async def _post(
                 proxy=self.proxy,
                 timeout=self._client_timeout,
             )
-            response.raise_for_status()
 
-            # Read the content to log it
+            # Read the content to log it before checking status
             content = await response.read()
             _LOGGER.debug(
                 "HTTP Response from %s (status: %d):\n%s",
                 address,
                 response.status,
-                content.decode("utf-8", errors="replace"),
+                content,
             )
 
             # Convert to httpx Response
@@ -176,8 +174,6 @@ async def _post(
 
         except TimeoutError as exc:
             raise TimeoutError(f"Request to {address} timed out") from exc
-        except aiohttp.ClientError as exc:
-            raise ConnectionError(f"Error connecting to {address}: {exc}") from exc
 
     async def post_xml(
         self, address: str, envelope: _Element, headers: dict[str, str]
@@ -239,15 +235,15 @@ async def _get(
                 proxy=self.proxy,
                 timeout=self._client_timeout,
             )
-            response.raise_for_status()
 
-            # Read content
+            # Read content and log before checking status
             content = await response.read()
 
             _LOGGER.debug(
-                "HTTP Response from %s (status: %d)",
+                "HTTP Response from %s (status: %d):\n%s",
                 address,
                 response.status,
+                content,
             )
 
             # Convert directly to requests.Response
@@ -255,8 +251,6 @@ async def _get(
 
         except TimeoutError as exc:
             raise TimeoutError(f"Request to {address} timed out") from exc
-        except aiohttp.ClientError as exc:
-            raise ConnectionError(f"Error connecting to {address}: {exc}") from exc
 
     def _httpx_to_requests_response(self, response: httpx.Response) -> Response:
         """Convert an httpx.Response object to a requests.Response object"""
diff --git a/tests/test_zeep_transport.py b/tests/test_zeep_transport.py
index f01c97b..c40d235 100644
--- a/tests/test_zeep_transport.py
+++ b/tests/test_zeep_transport.py
@@ -36,7 +36,6 @@ async def test_post_returns_httpx_response():
     mock_aiohttp_response.url = "http://example.com/service"
     mock_aiohttp_response.charset = "utf-8"
     mock_aiohttp_response.cookies = {}
-    mock_aiohttp_response.raise_for_status = Mock()
 
     mock_content = b"<response>test</response>"
     mock_aiohttp_response.read = AsyncMock(return_value=mock_content)
@@ -201,7 +200,7 @@ async def test_connection_error_handling():
 
     transport.session = mock_session
 
-    with pytest.raises(ConnectionError, match="Error connecting to"):
+    with pytest.raises(aiohttp.ClientError, match="Connection failed"):
         await transport.get("http://example.com/wsdl")
 
 
@@ -869,3 +868,46 @@ async def test_cookie_jar_type():
     # Verify cookies are accessible in requests response
     assert hasattr(requests_result.cookies, "__getitem__")
     assert "test" in requests_result.cookies
+
+
+@pytest.mark.asyncio
+async def test_http_error_responses_no_exception():
+    """Test that HTTP error responses (401, 500, etc.) don't raise exceptions."""
+    mock_session = create_mock_session()
+    transport = AIOHTTPTransport(session=mock_session)
+
+    # Test 401 Unauthorized
+    mock_401_response = Mock(spec=aiohttp.ClientResponse)
+    mock_401_response.status = 401
+    mock_401_response.headers = {"Content-Type": "text/xml"}
+    mock_401_response.method = "POST"
+    mock_401_response.url = "http://example.com/service"
+    mock_401_response.charset = "utf-8"
+    mock_401_response.cookies = {}
+    mock_401_response.read = AsyncMock(return_value=b"<error>Unauthorized</error>")
+
+    mock_session = Mock(spec=aiohttp.ClientSession)
+    mock_session.post = AsyncMock(return_value=mock_401_response)
+    transport.session = mock_session
+
+    # Should not raise exception
+    result = await transport.post("http://example.com/service", "<request/>", {})
+    assert isinstance(result, httpx.Response)
+    assert result.status_code == 401
+    assert result.read() == b"<error>Unauthorized</error>"
+
+    # Test 500 Internal Server Error
+    mock_500_response = Mock(spec=aiohttp.ClientResponse)
+    mock_500_response.status = 500
+    mock_500_response.headers = {"Content-Type": "text/xml"}
+    mock_500_response.charset = "utf-8"
+    mock_500_response.cookies = {}
+    mock_500_response.read = AsyncMock(return_value=b"<error>Server Error</error>")
+
+    mock_session.get = AsyncMock(return_value=mock_500_response)
+
+    # Should not raise exception
+    result = await transport.get("http://example.com/wsdl")
+    assert isinstance(result, RequestsResponse)
+    assert result.status_code == 500
+    assert result.content == b"<error>Server Error</error>"