plug daemon memory leak (#77)

* Update _protocol.py

* Update CHANGELOG.md

* bump version

yaqd-core/CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## [2023.11.0]
+
+### Fixed
+- Fixed memory leak in daemon server that scaled with number of connections
+
 ## [2023.6.0]
 
 ### Added
@@ -337,7 +342,8 @@ There are no actual code changes, this release is to update the release pipeline
 - Generic Client
 - Continuous hardware base daemon
 
-[Unreleased]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2023.6.0...main
+[Unreleased]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2023.11.0...main
+[2023.11.0]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2023.6.0..2023.11.0
 [2023.6.0]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2023.2.0...2023.6.0
 [2023.2.0]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2022.8.0...2023.2.0
 [2022.8.0]: https://github.com/yaq-project/yaq-python/compare/yaqd-core-2022.7.0...2022.8.0

yaqd-core/yaqd_core/__version__.py

@@ -11,7 +11,7 @@
 
 __avro_version__ = "1.9.2"
 
-__version__ = "2023.6.0"
+__version__ = "2023.11.0"
 
 try:
     __branch__ = (

yaqd-core/yaqd_core/_protocol.py

@@ -18,6 +18,7 @@ def __init__(self, daemon, *args, **kwargs):
     def connection_lost(self, exc):
         peername = self.transport.get_extra_info("peername")
         self.logger.info(f"Connection lost from {peername} to {self._daemon.name}")
+        self.task.cancel()
         self._daemon._connection_lost(peername)
 
     def connection_made(self, transport):
@@ -27,8 +28,7 @@ def connection_made(self, transport):
         self.transport = transport
         self.unpacker = avrorpc.Unpacker(self._avro_protocol)
         self._daemon._connection_made(peername)
-        task = asyncio.get_event_loop().create_task(self.process_requests())
-        self._daemon._tasks.append(task)
+        self.task = asyncio.get_event_loop().create_task(self.process_requests())
 
     def data_received(self, data):
         """Process an incomming request."""