fix: 增加socket支持

ncac/package/cac.conf

@@ -1,6 +1,8 @@
 server {
     listen       80;
     server_name  cacserver;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
 
     location / {
         root   /home/xydl/static;