{"role":"user","message":{"content":[{"type":"text","text":"<timestamp>Friday, Jul 31, 2026, 5:25 PM (UTC+8)</timestamp>\n<user_query>\n帮我检查推送金币的机制，为什么在app观看广告跳转后，再次进行WebSocket连接时，前端收不到推送的金币消息\n</user_query>"}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"排查广告跳转后 WebSocket 重连收不到金币推送的问题，先定位相关代码与连接/推送流程。\n\n[REDACTED]"},{"type":"tool_use","name":"Task","input":{"description":"Explore coin push WebSocket","prompt":"Explore the codebase to find all code related to:\n1. WebSocket connection and reconnection\n2. Coin/gold push notifications after watching ads\n3. Ad watching flow and navigation\n\nSearch for keywords like: WebSocket, ws, coin, gold, 金币, push, ad, 广告, reconnect\n\nReturn:\n- File paths and key functions/classes involved\n- How coin push works end-to-end\n- WebSocket connection lifecycle (connect, disconnect, reconnect)\n- Any obvious issues where coin messages might be lost on reconnect after ad navigation\n- Relevant code snippets with line numbers\n\nBe very thorough - search across frontend and backend if both exist.","subagent_type":"explore"}},{"type":"tool_use","name":"Glob","input":{"glob_pattern":"**/*.{ts,tsx,js,jsx,vue,go,py,java}"}},{"type":"tool_use","name":"Grep","input":{"pattern":"WebSocket|websocket|ws\\.|金币|coin|gold.*push|push.*coin","-i":true,"head_limit":80}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"深入阅读关键后端代码，并查找前端 WebSocket 实现。\n\n[REDACTED]"},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-system\\src\\main\\java\\com\\ruoyi\\system\\utils\\CoinWebSocketHandler.java"}},{"type":"tool_use","name":"Glob","input":{"glob_pattern":"**/*websocket*","target_directory":"f:\\jiawen_workspace"}},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace","pattern":"ws/coin|coin_update|WebSocket","head_limit":50}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Glob","input":{"glob_pattern":"**/*","target_directory":"f:\\jiawen_workspace"}},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-admin\\src\\main\\java\\com\\ruoyi\\web\\controller\\system\\mini\\MiniDocUserOpenApiController.java","offset":90,"limit":40}},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-admin\\src\\main\\java\\com\\ruoyi\\web\\controller\\system\\mini\\MiniDocUserOpenApiController.java","offset":1080,"limit":40}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Shell","input":{"command":"Get-ChildItem -Path \"f:\\jiawen_workspace\" -Directory -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Name","description":"List workspace directories"}},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\duanshipin-java","pattern":"pushCoinUpdate|coin_update"}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\code","pattern":"ws/coin|coin_update|CoinWebSocket","head_limit":30}},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\duanshipin-docs-java","pattern":"ws/coin|coin_update|WebSocket","head_limit":30}},{"type":"tool_use","name":"Shell","input":{"command":"Get-ChildItem -Path \"f:\\jiawen_workspace\" -Recurse -Include \"*.vue\",\"*.js\",\"*.ts\" -ErrorAction SilentlyContinue | Select-String -Pattern \"ws/coin|coin_update\" -List | Select-Object -First 20 Path","description":"Search frontend files for WebSocket coin code","block_until_ms":60000}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-admin\\src\\main\\java\\com\\ruoyi\\web\\controller\\system\\mini\\MiniDocUserOpenApiController.java","offset":560,"limit":180}},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-system\\src\\main\\java\\com\\ruoyi\\system\\utils\\WebSocketHandshakeInterceptor.java"}},{"type":"tool_use","name":"Await","input":{"task_id":"566179","block_until_ms":45000}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Read","input":{"path":"C:\\Users\\Administrator\\.cursor\\projects\\empty-window\\terminals\\566179.txt"}},{"type":"tool_use","name":"Read","input":{"limit":60,"offset":97,"path":"f:\\jiawen_workspace\\duanshipin-java\\ruoyi-admin\\src\\main\\java\\com\\ruoyi\\web\\controller\\system\\mini\\MiniDocUserOpenApiController.java"}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\duanshipin-java","pattern":"userId|user_id|ws/coin","glob":"**/*.{md,txt,json}","head_limit":30}},{"type":"tool_use","name":"Glob","input":{"glob_pattern":"**/*","target_directory":"f:\\jiawen_workspace\\duanshipin-docs-java"}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Read","input":{"path":"f:\\jiawen_workspace\\duanshipin-docs-java\\docs\\changes\\OTLJ-343.md"}},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\zuju-java","pattern":"ws/coin|coin_update|WebSocket","head_limit":20}},{"type":"tool_use","name":"Grep","input":{"path":"f:\\jiawen_workspace\\ttcloud-java","pattern":"ws/coin|coin_update","head_limit":20}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"根据对 `duanshipin-java` 后端代码的分析，金币推送机制和「看广告重连后收不到消息」的原因如下。\n\n## 推送机制概览\n\n整体是 **S2S 回调发奖 + WebSocket 实时推送 + Redis 离线补偿**：\n\n```mermaid\nsequenceDiagram\n    participant App as App 前端\n    participant Ad as uni-ad SDK\n    participant Cloud as uniCloud\n    participant API as /mini/openapi/uniad\n    participant WS as CoinWebSocketHandler\n    participant Redis as Redis ws:pending:{userId}\n\n    App->>Ad: 播放激励视频（页面跳转/后台）\n    Note over App,WS: WebSocket 可能断开或变成僵尸连接\n    Ad->>Cloud: 广告完成\n    Cloud->>API: GET 回调 user_id + trans_id + cpm\n    API->>API: addCoins() → docGlodService.addGold()\n    API->>WS: pushCoinUpdate(userId, amount)\n    alt session 存在且 isOpen()\n        WS->>App: coin_update（可能实际未送达）\n    else session 不存在或已关闭\n        WS->>Redis: 缓存消息（5分钟 TTL）\n    end\n    App->>WS: 重连 ws://host/ws/coin?userId=xxx\n    WS->>Redis: pushPendingMessages() 重放\n    WS->>App: connected\n```\n\n关键代码路径：\n\n1. 广告回调 → 加金币 → 推送：\n\n```1092:1106:f:\\jiawen_workspace\\duanshipin-java\\ruoyi-admin\\src\\main\\java\\com\\ruoyi\\web\\controller\\system\\mini\\MiniDocUserOpenApiController.java\n    private boolean addCoins(String userId, BigDecimal amount, String reason) {\n        ...\n        int i = docGlodService.addGold(userId, amount, \"广告观看奖励\");\n        if (i != 0) {\n            webSocketPushService.pushCoinUpdate(userId, amount);\n        }\n        return i != 0;\n    }\n```\n\n2. 推送逻辑（在线直推，离线写 Redis）：\n\n```426:461:f:\\jiawen_workspace\\duanshipin-java\\ruoyi-system\\src\\main\\java\\com\\ruoyi\\system\\utils\\CoinWebSocketHandler.java\n    public static boolean pushCoinUpdate(String userId, BigDecimal changeAmount) {\n        WebSocketSession session = SESSIONS.get(userId);\n        ...\n        if (session == null || !session.isOpen()) {\n            log.warn(\"用户不在线，缓存金币消息到Redis: userId={}, changeAmount={}\", userId, changeAmount);\n            cacheToRedis(userId, data);\n            return false;\n        }\n        try {\n            session.sendMessage(new TextMessage(data.toJSONString()));\n            log.info(\"金币推送成功: userId={}, 变化={}\", userId, changeAmount);\n            return true;\n        } catch (EOFException e) {\n            cacheToRedis(userId, data);\n            ...\n        }\n    }\n```\n\n3. 重连时重放 Redis 缓存：\n\n```237:248:f:\\jiawen_workspace\\duanshipin-java\\ruoyi-system\\src\\main\\java\\com\\ruoyi\\system\\utils\\CoinWebSocketHandler.java\n        pushPendingMessages(userId, session);\n\n        // 发送连接成功消息\n        try {\n            if (session.isOpen()) {\n                JSONObject response = new JSONObject();\n                response.put(\"type\", \"connected\");\n                ...\n                session.sendMessage(new TextMessage(response.toJSONString()));\n```\n\n---\n\n## 最可能的原因：僵尸 WebSocket 连接\n\n看广告时 App 会跳转/进后台，但服务端 TCP 连接可能 **尚未断开**，`SESSIONS` 里仍保留旧 session，且 `session.isOpen() == true`。\n\n此时广告 S2S 回调到达：\n\n| 步骤 | 服务端行为 | 实际结果 |\n|------|-----------|---------|\n| 1 | 检测到 session 在线 | 认为用户在线 |\n| 2 | `sendMessage()` 成功 | 日志打「金币推送成功」 |\n| 3 | **不写入 Redis** | 无离线补偿 |\n| 4 | 前端已挂起/已销毁 listener | 消息实际丢失 |\n| 5 | 用户返回后重连 | Redis 为空，无消息可重放 |\n\n这与「金币已到账（数据库已写入），但重连后前端收不到推送」完全吻合。\n\n**验证方式**：查服务端日志，若出现 `金币推送成功` 而非 `用户不在线，缓存金币消息到Redis`，基本可确认是此问题。\n\n---\n\n## 其他可能原因\n\n### 1. 重连时消息顺序问题\n\n重连后服务端 **先** 推送 Redis 缓存的 `coin_update`，**后** 发送 `connected`。\n\n若前端只在收到 `connected` 之后才注册/启用 `onMessage` 处理，会漏掉重放的金币消息。\n\n### 2. 时序竞态\n\n- **重连早于回调**：Redis 为空 → 正常，回调应直接推到新 session；若仍收不到，多半是前端 listener 未就绪。\n- **重连晚于回调且 session 已断开**：消息应在 Redis 中，重连应能重放；若收不到，查 Redis key `ws:pending:{userId}` 是否存在。\n\n### 3. Redis 缓存清理被注释\n\n```164:174:f:\\jiawen_workspace\\duanshipin-java\\ruoyi-system\\src\\main\\java\\com\\ruoyi\\system\\utils\\CoinWebSocketHandler.java\n            // 移除已推送的消息\n//            if (!pushedMessages.isEmpty()) {\n//                pendingList.removeAll(pushedMessages);\n//                ...\n//            }\n```\n\n这会导致 **重复推送**，一般不会导致「收不到」；但若前端按 timestamp 去重且逻辑有误，可能表现为「没收到新消息」。\n\n### 4. Redis 5 分钟 TTL\n\n广告停留或 App 后台超过 5 分钟，缓存过期，重连也无法恢复。\n\n### 5. userId 不一致\n\nWebSocket 用 `?userId=xxx`，广告回调用 `user_id=xxx`。若格式不一致（大小写、前缀等），推送会发到错误的 session 或 Redis key。\n\n### 6. HTTP 兜底未调用\n\n后端提供了 `GET /mini/openapi/pending/{userId}?push=true` 作为补偿接口。若前端重连后只建 WebSocket、不调此接口，在僵尸连接场景下会完全丢失消息。\n\n---\n\n## 排查建议\n\n按优先级检查：\n\n1. **服务端日志**（同一 userId、同一笔广告）：\n   - `WebSocket连接关闭` / `客户端连接已断开`\n   - `收到 uni-ad 回调`\n   - `金币推送成功` vs `用户不在线，缓存金币消息到Redis`\n   - `WebSocket连接建立` + `发现Redis缓存消息，立即推送`\n\n2. **Redis**：查 `ws:pending:{userId}` 在回调后、重连前是否有数据。\n\n3. **前端**（当前 workspace 未找到前端代码，需在你本地 uni-app 项目中确认）：\n   - 看广告前是否主动 `close` WebSocket\n   - `onShow` / 广告关闭回调里是否重连\n   - `onMessage` 是否在 `connected` 之前就绑定\n   - 是否处理 `type === 'coin_update'`\n   - 重连后是否调用 `/mini/openapi/pending/{userId}?push=true`\n\n---\n\n## 修复建议\n\n**后端（推荐）**：改为「先缓存、再推送、客户端 ack 后清除」，避免僵尸连接丢消息：\n\n```java\n// pushCoinUpdate 改造思路\ncacheToRedis(userId, data);  // 始终先写 Redis\nif (session != null && session.isOpen()) {\n    session.sendMessage(...);\n}\n// 前端收到后发送 {\"action\":\"ack\", \"timestamp\": xxx}\n// 服务端收到 ack 后从 Redis 清除对应消息\n```\n\n**前端（推荐）**：\n- 打开广告前主动断开 WebSocket，让服务端走 Redis 缓存路径\n- 从广告返回 / `onShow` 时重连，并在 `onOpen` 时立即绑定 `onMessage`（不要等 `connected`）\n- 重连后调用 `GET /mini/openapi/pending/{userId}?push=true` 作双保险\n\n**后端小修复**：取消注释 Redis 清理逻辑，避免重复推送干扰前端。\n\n---\n\n如果你能提供前端 WebSocket 相关代码（或一次出问题时的服务端日志片段），我可以进一步定位是「僵尸连接」还是「前端 listener 时序」问题，并给出具体改法。需要的话我也可以直接在 `duanshipin-java` 里实现「先缓存再推送」的后端改造。\n\n[REDACTED]"}]}}
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{"role":"user","message":{"content":[{"type":"text","text":"<user_query>Briefly inform the user about the task result and perform any follow-up actions (if needed). If there's no follow-ups needed, don't explicitly say that.</user_query>"}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"[REDACTED]"},{"type":"tool_use","name":"Read","input":{"path":"C:\\Users\\Administrator\\.cursor\\projects\\empty-window\\terminals\\566179.txt"}}]}}
{"role":"assistant","message":{"content":[{"type":"text","text":"在前端代码搜索方面，`f:\\jiawen_workspace` 下全部 `.vue` / `.js` / `.ts` 文件里**没有找到**包含 `ws/coin` 或 `coin_update` 的实现，说明 App 前端很可能在别的仓库或路径。\n\n因此目前只能基于 `duanshipin-java` 后端做分析，最可能的原因仍是：**看广告时 WebSocket 变成僵尸连接，服务端认为推送成功但未写入 Redis，重连后 Redis 为空**。\n\n如果你能提供前端项目路径，或一次出问题时的服务端日志（关注 `金币推送成功` / `缓存金币消息到Redis` / `发现Redis缓存消息`），我可以继续帮你定位是后端还是前端的问题。\n\n[REDACTED]"}]}}
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