fix for FD leak on CPD

seleniumbase/core/browser_launcher.py

@@ -603,6 +603,7 @@ def uc_open_with_cdp_mode(driver, url=None):
                 loop.run_until_complete(page_tab.activate())
 
     loop.run_until_complete(driver.cdp_base.update_targets())
+    loop.run_until_complete(driver.cdp_base.connection.aclose())
     page = loop.run_until_complete(driver.cdp_base.get(url))
     with gui_lock:
         with suppress(Exception):

seleniumbase/plugins/sb_manager.py

@@ -1373,6 +1373,7 @@ def SB(
                 loop = asyncio.get_event_loop()
                 asyncio.set_event_loop(loop)
                 loop.run_until_complete(sb_config._cdp_aclose())
+                loop.close()
         gc.collect()
     if test and test_name and not test_passed and raise_test_failure:
         raise exception

seleniumbase/undetected/cdp_driver/browser.py

@@ -190,7 +190,7 @@ async def wait(self, time: Union[float, int] = 1) -> Browser:
 
     sleep = wait
     """Alias for wait"""
-    def _handle_target_update(
+    async def _handle_target_update(
         self,
         event: Union[
             cdp.target.TargetInfoChanged,
@@ -226,19 +226,17 @@ def _handle_target_update(
             target_info: cdp.target.TargetInfo = event.target_info
             from .tab import Tab
 
-            new_target = Tab(
-                (
-                    f"ws://{self.config.host}:{self.config.port}"
-                    f"/devtools/{target_info.type_ or 'page'}"
-                    f"/{target_info.target_id}"
-                ),
-                target=target_info,
-                browser=self,
-            )
-            self.targets.append(new_target)
-            logger.debug(
-                "Target #%d created => %s", len(self.targets), new_target
+            websocket_url = (
+                f"ws://{self.config.host}:{self.config.port}"
+                f"/devtools/{target_info.type_ or 'page'}"
+                f"/{target_info.target_id}"
             )
+
+            async with Tab(websocket_url=websocket_url, target=target_info, browser=self) as new_target:
+                self.targets.append(new_target)
+                logger.debug(
+                    "Target #%d created => %s", len(self.targets), new_target
+                )
         elif isinstance(event, cdp.target.TargetDestroyed):
             current_tab = next(
                 filter(

seleniumbase/undetected/cdp_driver/tab.py

@@ -137,6 +137,16 @@ def __init__(
         self._dom = None
         self._window_id = None
 
+
+    async def __aenter__(self):
+        return self
+
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        await self.aclose()
+        if exc_type and exc_val:
+            raise exc_type(exc_val)
+
     @property
     def inspector_url(self):
         """