udid

@@ -16,6 +16,7 @@ const path = require('path');
 const bodyParser = require('body-parser');
 const cookieParser = require('cookie-parser');
 const favicon = require('serve-favicon');
+const uuid = require('uuid');
 
 const pkg = require('./package.json');
 const session = require('cookie-session');
@@ -66,6 +67,12 @@ app.use((req, res, next) => {
     req.user = {}; // 全局的用户数据
     req.yoho = {}; // req和res绑定yoho对象，用于传递全局数据, 如req.yoho.channel等
 
+    if (!req.session.id) {
+        req.session.id = uuid.v4();
+    }
+
+    req.sessionID = req.session.id;
+
     next();
 });