fix: keep provider TCP channels stable

src/components/unideskcprovider/test_unideskcprovider.py

@@ -303,43 +303,6 @@ class ProtocolHelpersTest(unittest.TestCase):
         stderr_thread.join.assert_called_once_with()
         manager.finish_session.assert_called_once_with("session", 0)
 
-    def test_recycles_only_the_oldest_expired_idle_channel(self):
-        manager = ProviderManager.__new__(ProviderManager)
-        manager.state_lock = provider.threading.RLock()
-        manager.logger = MagicMock()
-        expired = DataChannel(manager, "expired")
-        expired.status = "ready"
-        expired.idle_since = 100.0
-        newer = DataChannel(manager, "newer")
-        newer.status = "ready"
-        newer.idle_since = 200.0
-        claimed = DataChannel(manager, "claimed")
-        claimed.status = "claimed"
-        claimed.session_id = "session"
-        claimed.idle_since = 0.0
-        manager.channels = {value.id: value for value in (newer, claimed, expired)}
-        for channel in manager.channels.values():
-            channel.close = MagicMock()
-
-        self.assertTrue(manager.recycle_idle_channel(now=1000.0))
-        expired.close.assert_called_once_with("空闲通道主动轮换")
-        newer.close.assert_not_called()
-        claimed.close.assert_not_called()
-
-    def test_keeps_recent_idle_channels(self):
-        manager = ProviderManager.__new__(ProviderManager)
-        manager.state_lock = provider.threading.RLock()
-        manager.logger = MagicMock()
-        channel = DataChannel(manager, "recent")
-        channel.status = "ready"
-        channel.idle_since = 500.0
-        channel.close = MagicMock()
-        manager.channels = {channel.id: channel}
-
-        self.assertFalse(manager.recycle_idle_channel(now=1000.0))
-        channel.close.assert_not_called()
-
-
 class UpdateManagerTest(unittest.TestCase):
     @staticmethod
     def _source(version: str = "9.9.9") -> bytes:

src/components/unideskcprovider/unideskcprovider.py

@@ -56,7 +56,7 @@ else:
 
 APP_NAME = "UniDesk Windows Provider"
 DISPLAY_NAME = "UniDesk Windows Provider" if sys.platform == "win32" else "UniDesk Linux Provider"
-APP_VERSION = "0.4.0"
+APP_VERSION = "0.4.1"
 CONFIG_DIR = Path.home() / ".unidesk"
 CONFIG_PATH = CONFIG_DIR / "provider.yaml"
 LOG_DIR = CONFIG_DIR / "logs"
@@ -69,7 +69,6 @@ POOL_SIZE = 32
 MAX_HEADER_BYTES = 64 * 1024
 MAX_PAYLOAD_BYTES = 16 * 1024 * 1024
 HEARTBEAT_SECONDS = 15
-DATA_CHANNEL_MAX_IDLE_SECONDS = 10 * 60
 TCP_KEEPALIVE_IDLE_SECONDS = 30
 TCP_KEEPALIVE_INTERVAL_SECONDS = 10
 TCP_KEEPALIVE_PROBES = 3
@@ -1262,7 +1261,6 @@ class ProviderManager:
         while not self.stop_event.is_set():
             if time.time() - last_heartbeat >= HEARTBEAT_SECONDS:
                 self._send_heartbeat()
-                self.recycle_idle_channel()
                 last_heartbeat = time.time()
             try:
                 opcode, payload = control.receive()
@@ -1444,23 +1442,6 @@ class ProviderManager:
                 channel.idle_since = time.monotonic()
         self.pool_changed()
 
-    def recycle_idle_channel(self, now: float | None = None) -> bool:
-        current = time.monotonic() if now is None else now
-        with self.state_lock:
-            candidates = [
-                channel
-                for channel in self.channels.values()
-                if channel.status == "ready"
-                and channel.session_id is None
-                and current - channel.idle_since >= DATA_CHANNEL_MAX_IDLE_SECONDS
-            ]
-            channel = min(candidates, key=lambda value: value.idle_since) if candidates else None
-        if channel is None:
-            return False
-        self.logger.info("主动轮换空闲 TCP 通道: %s", channel.id)
-        channel.close("空闲通道主动轮换")
-        return True
-
     def handle_data_frame(self, channel: DataChannel, header: dict, payload: bytes) -> None:
         session_id = str(header.get("sessionId") or "")
         with self.state_lock:

src/components/unideskcprovider/update.json

@@ -1,9 +1,9 @@
 {
   "schemaVersion": 1,
   "channel": "stable",
-  "latestVersion": "0.4.0",
+  "latestVersion": "0.4.1",
   "downloadUrl": "unideskcprovider.py",
-  "bytes": 91440,
-  "sha256": "75fade32b5beeab31b8614a130a2123094d3e59a37d0b0b33b19954b60697bb7",
-  "releaseNotes": "同一 Python Provider 新增 Linux headless、Bash、systemd 一键安装与跨平台升级支持。"
+  "bytes": 90608,
+  "sha256": "136c146036324092b88ab118850e86428d214fd0310dec4f6c9eb608a2809e81",
+  "releaseNotes": "Linux 原生 Provider 禁用无协调的空闲 TCP 通道主动轮换，避免高并发分配竞态。"
 }