From f69da211abacea0b8e8572903dee79aaef3b578a Mon Sep 17 00:00:00 2001
From: Guoguo <i@qwq.trade>
Date: Tue, 12 May 2026 06:28:36 -0700
Subject: [PATCH] fix: BLE connection leak on page unload and retry timer
 cleanup

- onUnload disconnects BLE if not in 'done' state (prevents connection leak)
- onUnload clears retry timer to prevent setData on dead page
- Store retry setTimeout ref for proper cleanup
---
 miniprogram/pages/ble-connect/ble-connect.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/miniprogram/pages/ble-connect/ble-connect.js b/miniprogram/pages/ble-connect/ble-connect.js
index b334f53..41573fb 100644
--- a/miniprogram/pages/ble-connect/ble-connect.js
+++ b/miniprogram/pages/ble-connect/ble-connect.js
@@ -34,8 +34,15 @@ Page({
 
   onUnload: function () {
     clearTimeout(this._scanTimer)
+    clearTimeout(this._retryTimer)
     ble.stopScan()
-    if (this._onBindResult) ble.off('bind_result', this._onBindResult)
+    if (this._onBindResult) {
+      ble.off('bind_result', this._onBindResult)
+      this._onBindResult = null
+    }
+    if (this.data.state !== 'done') {
+      ble.disconnect()
+    }
   },
 
   startBleConnect: function () {
@@ -98,7 +105,7 @@ Page({
       self._onBindResult = null
     }
     ble.disconnect()
-    setTimeout(function () {
+    self._retryTimer = setTimeout(function () {
       self.startBleConnect()
     }, 1000)
   },