Dec 15, 2025
diff --git a/packages/toolbox-core/src/toolbox_core/sync_client.py b/packages/toolbox-core/src/toolbox_core/sync_client.py


 from asyncio import AbstractEventLoop, new_event_loop, run_coroutine_threadsafe
 from threading import Thread
 from threading importLock,Thread
 from typing import Any, Awaitable, Callable, Mapping, Optional, Union

 from deprecated import deprecated

    __loop: Optional[AbstractEventLoop] = None
    __thread: Optional[Thread] = None
    __lock: Lock = Lock()

    def __init__(
        self,
        # Running a loop in a background thread allows us to support async
        # methods from non-async environments.
        if self.__class__.__loop is None:
            loop = new_event_loop()
            thread = Thread(target=loop.run_forever, daemon=True)
            thread.start()
            self.__class__.__thread = thread
            self.__class__.__loop = loop
            with self.__class__.__lock:
                if self.__class__.__loop is None:
                    loop = new_event_loop()
                    thread = Thread(target=loop.run_forever, daemon=True)
                    thread.start()
                    self.__class__.__thread = thread
                    self.__class__.__loop = loop

        async def create_client():
            return ToolboxClient(url, client_headers=client_headers, protocol=protocol)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -14,7 +14,7 @@


		from asyncio import AbstractEventLoop, new_event_loop, run_coroutine_threadsafe
		from threading import Thread
		from threading importLock,Thread
		from typing import Any, Awaitable, Callable, Mapping, Optional, Union

		from deprecated import deprecated
Expand All		@@ -34,6 +34,7 @@ class ToolboxSyncClient:

		__loop: Optional[AbstractEventLoop] = None
		__thread: Optional[Thread] = None
		__lock: Lock = Lock()

		def __init__(
		self,
Expand All		@@ -53,11 +54,13 @@ def __init__(
		# Running a loop in a background thread allows us to support async
		# methods from non-async environments.
		if self.__class__.__loop is None:
		loop = new_event_loop()
		thread = Thread(target=loop.run_forever, daemon=True)
		thread.start()
		self.__class__.__thread = thread
		self.__class__.__loop = loop
		with self.__class__.__lock:
		if self.__class__.__loop is None:
		loop = new_event_loop()
		thread = Thread(target=loop.run_forever, daemon=True)
		thread.start()
		self.__class__.__thread = thread
		self.__class__.__loop = loop

		async def create_client():
		return ToolboxClient(url, client_headers=client_headers, protocol=protocol)
Expand Down