Better var name. Add missing test for coverage

httpcore/_async/http11.py

@@ -71,7 +71,8 @@ def __init__(
             our_role=h11.CLIENT,
             max_incomplete_event_size=self.MAX_INCOMPLETE_EVENT_SIZE,
         )
-        self._prev_socket_use_time = time.monotonic()
+        # Assuming we were just connected
+        self._network_stream_used_at = time.monotonic()
 
     async def handle_async_request(self, request: Request) -> Response:
         if not self.can_handle_request(request.url.origin):
@@ -177,7 +178,7 @@ async def _send_event(
         bytes_to_send = self._h11_state.send(event)
         if bytes_to_send is not None:
             await self._network_stream.write(bytes_to_send, timeout=timeout)
-            self._prev_socket_use_time = time.monotonic()
+            self._network_stream_used_at = time.monotonic()
 
     # Receiving the response...
 
@@ -229,7 +230,7 @@ async def _receive_event(
                 data = await self._network_stream.read(
                     self.READ_NUM_BYTES, timeout=timeout
                 )
-                self._prev_socket_use_time = time.monotonic()
+                self._network_stream_used_at = time.monotonic()
 
                 # If we feed this case through h11 we'll raise an exception like:
                 #
@@ -294,15 +295,16 @@ def has_expired(self) -> bool:
         # only valid state is that the socket is about to return b"", indicating
         # a server-initiated disconnect.
         # Checking the readable status is relatively expensive so check it at a lower frequency.
-        if (now - self._prev_socket_use_time) > self._socket_poll_interval():
-            self._prev_socket_use_time = now
+        if (now - self._network_stream_used_at) > self._socket_poll_interval():
+            self._network_stream_used_at = now
             server_disconnected = (
                 self._state == HTTPConnectionState.IDLE
                 and self._network_stream.get_extra_info("is_readable")
             )
-            return server_disconnected
-        else:
-            return False
+            if server_disconnected:
+                return True
+
+        return False
 
     def _socket_poll_interval(self) -> float:
         # Randomize to avoid polling for all the connections at once

httpcore/_sync/http11.py

@@ -71,7 +71,8 @@ def __init__(
             our_role=h11.CLIENT,
             max_incomplete_event_size=self.MAX_INCOMPLETE_EVENT_SIZE,
         )
-        self._prev_socket_use_time = time.monotonic()
+        # Assuming we were just connected
+        self._network_stream_used_at = time.monotonic()
 
     def handle_request(self, request: Request) -> Response:
         if not self.can_handle_request(request.url.origin):
@@ -177,7 +178,7 @@ def _send_event(
         bytes_to_send = self._h11_state.send(event)
         if bytes_to_send is not None:
             self._network_stream.write(bytes_to_send, timeout=timeout)
-            self._prev_socket_use_time = time.monotonic()
+            self._network_stream_used_at = time.monotonic()
 
     # Receiving the response...
 
@@ -229,7 +230,7 @@ def _receive_event(
                 data = self._network_stream.read(
                     self.READ_NUM_BYTES, timeout=timeout
                 )
-                self._prev_socket_use_time = time.monotonic()
+                self._network_stream_used_at = time.monotonic()
 
                 # If we feed this case through h11 we'll raise an exception like:
                 #
@@ -294,15 +295,16 @@ def has_expired(self) -> bool:
         # only valid state is that the socket is about to return b"", indicating
         # a server-initiated disconnect.
         # Checking the readable status is relatively expensive so check it at a lower frequency.
-        if (now - self._prev_socket_use_time) > self._socket_poll_interval():
-            self._prev_socket_use_time = now
+        if (now - self._network_stream_used_at) > self._socket_poll_interval():
+            self._network_stream_used_at = now
             server_disconnected = (
                 self._state == HTTPConnectionState.IDLE
                 and self._network_stream.get_extra_info("is_readable")
             )
-            return server_disconnected
-        else:
-            return False
+            if server_disconnected:
+                return True
+
+        return False
 
     def _socket_poll_interval(self) -> float:
         # Randomize to avoid polling for all the connections at once

tests/_async/test_http11.py

@@ -1,4 +1,4 @@
-from typing import Any
+from typing import Any, List
 
 import pytest
 
@@ -158,6 +158,43 @@ async def test_http11_connection_with_local_protocol_error():
         )
 
 
+@pytest.mark.anyio
+async def test_http11_has_expired_checks_readable_status():
+    class AsyncMockStreamReadable(httpcore.AsyncMockStream):
+        def __init__(self, buffer: List[bytes]) -> None:
+            super().__init__(buffer)
+            self.is_readable = False
+            self.checks = 0
+
+        def get_extra_info(self, info: str) -> Any:
+            if info == "is_readable":
+                self.checks += 1
+                return self.is_readable
+            return super().get_extra_info(info)  # pragma: nocover
+
+    origin = httpcore.Origin(b"https", b"example.com", 443)
+    stream = AsyncMockStreamReadable(
+        [
+            b"HTTP/1.1 200 OK\r\n",
+            b"Content-Type: plain/text\r\n",
+            b"Content-Length: 13\r\n",
+            b"\r\n",
+            b"Hello, world!",
+        ]
+    )
+    async with httpcore.AsyncHTTP11Connection(
+        origin=origin, stream=stream, socket_poll_interval_between=(0, 0)
+    ) as conn:
+        response = await conn.request("GET", "https://example.com/")
+        assert response.status == 200
+
+        assert stream.checks == 0
+        assert not conn.has_expired()
+        stream.is_readable = True
+        assert conn.has_expired()
+        assert stream.checks == 2
+
+
 @pytest.mark.anyio
 @pytest.mark.parametrize("should_check", [True, False])
 async def test_http11_has_expired_checks_readable_status_by_interval(

tests/_sync/test_http11.py

@@ -1,4 +1,4 @@
-from typing import Any
+from typing import Any, List
 
 import pytest
 
@@ -159,6 +159,43 @@ def test_http11_connection_with_local_protocol_error():
 
 
 
+def test_http11_has_expired_checks_readable_status():
+    class MockStreamReadable(httpcore.MockStream):
+        def __init__(self, buffer: List[bytes]) -> None:
+            super().__init__(buffer)
+            self.is_readable = False
+            self.checks = 0
+
+        def get_extra_info(self, info: str) -> Any:
+            if info == "is_readable":
+                self.checks += 1
+                return self.is_readable
+            return super().get_extra_info(info)  # pragma: nocover
+
+    origin = httpcore.Origin(b"https", b"example.com", 443)
+    stream = MockStreamReadable(
+        [
+            b"HTTP/1.1 200 OK\r\n",
+            b"Content-Type: plain/text\r\n",
+            b"Content-Length: 13\r\n",
+            b"\r\n",
+            b"Hello, world!",
+        ]
+    )
+    with httpcore.HTTP11Connection(
+        origin=origin, stream=stream, socket_poll_interval_between=(0, 0)
+    ) as conn:
+        response = conn.request("GET", "https://example.com/")
+        assert response.status == 200
+
+        assert stream.checks == 0
+        assert not conn.has_expired()
+        stream.is_readable = True
+        assert conn.has_expired()
+        assert stream.checks == 2
+
+
+
 @pytest.mark.parametrize("should_check", [True, False])
 def test_http11_has_expired_checks_readable_status_by_interval(
     monkeypatch, should_check