feat: 添加realtime_dialog和realtime_dialog_external_rag_test项目，更新test2项目

test2/server/app.js

@@ -1,4 +1,5 @@
 require('dotenv').config();
+const http = require('http');
 const express = require('express');
 const cors = require('cors');
 const path = require('path');
@@ -6,14 +7,11 @@ const db = require('./db');
 const voiceRoutes = require('./routes/voice');
 const chatRoutes = require('./routes/chat');
 const sessionRoutes = require('./routes/session');
+const { setupNativeVoiceGateway } = require('./services/nativeVoiceGateway');
 
 // ========== 环境变量校验 ==========
 function validateEnv() {
   const required = [
-    { key: 'VOLC_RTC_APP_ID', desc: 'RTC 应用 ID' },
-    { key: 'VOLC_RTC_APP_KEY', desc: 'RTC 应用密钥' },
-    { key: 'VOLC_ACCESS_KEY_ID', desc: '火山引擎 AccessKey ID' },
-    { key: 'VOLC_SECRET_ACCESS_KEY', desc: '火山引擎 Secret Access Key' },
     { key: 'VOLC_S2S_APP_ID', desc: 'S2S 端到端语音 AppID' },
     { key: 'VOLC_S2S_TOKEN', desc: 'S2S 端到端语音 Token' },
     { key: 'VOLC_ARK_ENDPOINT_ID', desc: '方舟 LLM 推理接入点 ID' },
@@ -68,42 +66,11 @@ function validateEnv() {
 
 // ========== Express 应用 ==========
 const app = express();
+const server = http.createServer(app);
 const PORT = process.env.PORT || 3001;
 
 app.use(cors());
 
-// RTC Function Calling 回调不带 Content-Type，必须在标准 body parser 之前手动读取
-// 全局序列号：在 body 读取前同步分配，确保反映真实请求到达顺序
-let fcCallbackSeq = 0;
-app.post('/api/voice/fc_callback', (req, res, next) => {
-  const seq = ++fcCallbackSeq; // 同步分配，在任何异步操作之前
-  if (!req.headers['content-type']) {
-    const chunks = [];
-    req.on('data', (chunk) => chunks.push(chunk));
-    req.on('end', () => {
-      const rawBuf = Buffer.concat(chunks);
-      const raw = rawBuf.toString('utf-8');
-      console.log(`[RawBody] seq=${seq} Read ${rawBuf.length} bytes`);
-      // 将所有回调原始内容追加到日志文件
-      try {
-        const fs = require('fs');
-        fs.appendFileSync('fc_all_callbacks.log', `\n=== SEQ=${seq} TIME=${new Date().toISOString()} BYTES=${rawBuf.length} ===\n${raw}\n`);
-      } catch(e) {}
-      try { req.body = JSON.parse(raw); } catch (e) { console.error('[RawBody] JSON parse failed:', e.message); req.body = { _raw: raw }; }
-      req.body._seq = seq;
-      next();
-    });
-    req.on('error', (err) => {
-      console.error('[RawBody] Error:', err.message);
-      next();
-    });
-  } else {
-    req.body = req.body || {};
-    req.body._seq = seq;
-    next();
-  }
-});
-
 app.use(express.json({ limit: '1mb' }));
 app.use(express.urlencoded({ extended: true, limit: '1mb' }));
 
@@ -123,16 +90,8 @@ app.use('/api/voice', voiceRoutes);
 app.use('/api/chat', chatRoutes);
 app.use('/api/session', sessionRoutes);
 
-// 静态文件服务
-app.use(express.static('../client/dist'));
-
-// 处理单页应用路由
-app.get('*', (req, res) => {
-  res.sendFile(path.join(__dirname, '../client/dist/index.html'));
-});
-
 app.get('/api/health', (req, res) => {
-  const envReady = !process.env.VOLC_RTC_APP_ID?.startsWith('your_');
+  const envReady = !process.env.VOLC_S2S_APP_ID?.startsWith('your_');
   res.json({
     status: 'ok',
     mode: 's2s-hybrid',
@@ -149,6 +108,14 @@ app.get('/api/health', (req, res) => {
   });
 });
 
+// 静态文件服务
+app.use(express.static('../client/dist'));
+
+// 处理单页应用路由
+app.get('*', (req, res) => {
+  res.sendFile(path.join(__dirname, '../client/dist/index.html'));
+});
+
 // 统一错误处理中间件
 app.use((err, req, res, _next) => {
   console.error(`[Error] ${req.method} ${req.path}:`, err.message);
@@ -174,7 +141,14 @@ async function start() {
     console.warn('[DB] Continuing without database — context switching will use in-memory fallback');
   }
 
-  app.listen(PORT, () => {
+  if (process.env.ENABLE_NATIVE_VOICE_GATEWAY !== 'false') {
+    setupNativeVoiceGateway(server);
+    console.log('[NativeVoice] Gateway enabled at /ws/realtime-dialog');
+  } else {
+    console.log('[NativeVoice] Gateway disabled (ENABLE_NATIVE_VOICE_GATEWAY=false)');
+  }
+
+  server.listen(PORT, () => {
     console.log('\n========================================');
     console.log(`  🚀 Voice Chat Backend`);
     console.log(`  📡 http://localhost:${PORT}`);