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# WalletMan 后端对接文档
> 前端对接见 [walletman前端对接.md](./walletman前端对接.md)
Android 宿主通过 **HTTP + WebSocket + FCM** 与 walletman 服务端通信。服务端默认 `:16000`
---
## 1. 架构
```
Android 宿主 ◄── HTTP/WS ──► walletman :16000 ◄── 代理 TCP ──► 钱包 API
◄── FCM data-only ──► Firebase
```
| 链路 | 用途 |
|------|------|
| HTTP REST | 登录、绑钱包、业务 |
| WebSocket `/ws` | 设备注册、TCP 代理、心跳 |
| FCM | WS 断线拉活、token 过期重绑 |
**clientId** 设备唯一 IDWS 注册 key + FCM 目标 key需与 App 侧 `DeviceInfo.getUniqueIdSync()` 一致。
---
## 2. 启动与配置
```bash
cd servers/walletman/cmd/server
go run . -tls android
```
测试页:`http://localhost:16000/test/index.html`
**FCM 服务账号:**
```
servers/walletman/cmd/server/config/fcm-service-account.json
```
`FCM_SERVICE_ACCOUNT=/path/to/json`。须与宿主 App `google-services.json` **同一 Firebase 项目**
---
## 3. 通用约定
**响应:**
```json
{ "success": true, "message": "说明", "data": {} }
```
**需登录接口请求头:**
```
Content-Type: application/json
X-User-ID: 10000
```
---
## 4. HTTP 接口
### POST `/login`
```json
// req
{ "username": "test123", "password": "123456" }
// data
{ "userId": 10000, "userToken": "10000" }
```
### POST `/register`
Token 绑钱包。
```json
{
"walletType": "paytm",
"params": {
"type": "paytm",
"token": "...",
"refreshToken": "...",
"mobile": "9xxxxxxxxx",
"deviceId": "...",
"chType": "ipay",
"chVersion": "3"
}
}
```
```json
// data
{ "walletId": "paytm_9xxxxxxxxx", "walletType": "paytm" }
```
`walletId` = `{walletType}_{phone}`
常用 `walletType``paytm` | `phonepe` | `mobikwik` | `freecharge` | `paytm business` | `phonepe business`
### POST `/request-otp` / POST `/verify-otp`
OTP 绑钱包,见 `http_handler.go`
### GET `/wallets`
```json
{
"wallets": [{
"id": "paytm_9876543210",
"walletType": "paytm",
"phone": "9876543210",
"upi": "xxx@paytm",
"status": "active",
"otpMode": false
}]
}
```
`inactive` + 非 OTP → 可能触发 FCM 重绑(`maybeNotifyWalletRebind`)。
### POST `/fcm/register`
```json
{ "clientId": "设备ID", "fcmToken": "..." }
```
与 WS `register.data.fcmToken` 等价,均 `storeFcmToken`
### POST `/fcm/send-wake`
```json
{ "clientId": "xxx" }
// 或 { "userId": 10000 }
```
### POST `/fcm/send-rebind`
```json
{
"walletId": "paytm_9876543210",
"walletType": "paytm",
"phone": "9876543210",
"retry": false,
"notify": true
}
```
`clientId` 可省略,按 wallet owner 查 `GetFcmClientID`
### GET `/fcm/clients`
已注册 FCM 的 clientId 列表。
---
## 5. WebSocket `/ws`
URL`ws://host:16000/ws``wss://...`
### 客户端 → 服务端
**register连上即发**
```json
{
"type": "register",
"messageId": "register_1700000000000",
"clientId": "设备ID",
"data": { "userId": 10000, "fcmToken": "可选" }
}
```
-`clientId → Client`
- `userManager.SetProxy(userId, clientId, ...)`
- 同 clientId 新连接踢旧连接
**ping建议 10s**
```json
{ "type": "ping", "messageId": "ping_xxx" }
```
**proxyReady / proxyData / proxyClose**
| type | 说明 |
|------|------|
| proxyReady | TCP 已连 host:port |
| proxyData | data.data = base64 |
| proxyClose | 结束 |
### 服务端 → 客户端
**proxyRequest**
```json
{
"type": "proxyRequest",
"messageId": "req_1700000000000",
"data": { "host": "api.phonepe.com", "port": 443 }
}
```
443 端口服务端侧做 TLS再 HTTP/2 转发。
### 服务端行为
| 事件 | 行为 |
|------|------|
| WS 断开 | `cleanupClient``sendFcmWake(clientId)` |
| 45s 无活动 | 心跳超时清理 + wake |
| 代理时 client 离线 | `requestProxy` 失败 → wake |
| 钱包 API 请求 | `proxyRoundTripper``requestProxy` |
代码:`websocket_handler.go``proxy.go``fcm.go`
---
## 6. FCM 下发data-only
重绑 **不发 notification 块**,避免绕过 App 静默逻辑。
| data key | 说明 |
|----------|------|
| msg | 文案(客户端 AIDL 失败才本地弹) |
| cmd | `wake_proxy` \| `rebind_wallet` |
| params | JSON 字符串 |
### wake_proxy
```json
{ "cmd": "wake_proxy", "params": "{}" }
```
### rebind_wallet
```json
{
"cmd": "rebind_wallet",
"msg": "Paytm 已过期,点我自动重绑",
"params": "{\"walletId\":\"paytm_xxx\",\"walletType\":\"paytm\",\"phone\":\"9xxx\",\"retry\":false,\"tryGtkAnyway\":false}"
}
```
PhonePe 默认 `retry=true`
### 自动触发
`wallet.GetStatus() == inactive``!GetOTPMode()``sendFcmRebind(..., notify=true)`
### 发送实现
`sendFcmToClient` → FCM HTTP v1 `projects/{id}/messages:send`
---
## 7. 时序(服务端视角)
**代理请求**
```
walletman HTTP 出网
→ GetProxyClientID(userId)
→ requestProxy(clientId, host, 443)
→ WS proxyRequest → 等 proxyReady
→ 双向 proxyData
```
**断线拉活**
```
WS cleanupClient
→ sendFcmWake(clientId)
→ 客户端 wakeFromPrefs → 重连 WS register
```
**重绑**
```
inactive 检测 / 手动 /fcm/send-rebind
→ FCM rebind_wallet
→ 客户端静默 AIDL → POST /register宿主实现
→ 失败则客户端弹通知,用户点击后走前端 handler
```
---
## 8. 调试
```bash
# 服务端日志
go run . -tls android
# 测试页
http://localhost:16000/test/index.html
```
| 接口 | 用途 |
|------|------|
| GET /fcm/clients | 看已注册设备 |
| POST /fcm/send-wake | 手动拉活 |
| POST /fcm/send-rebind | 手动重绑 |
| 现象 | 排查 |
|------|------|
| FCM send failed | 服务账号路径、project_id |
| no FCM token for clientId | App 未 POST /fcm/register 或 WS 未带 fcmToken |
| Client not connected | WS 未连;发 wake 后重试 |
| 重绑发了客户端无反应 | 查 FCM send ok 日志Firebase 项目是否一致 |