WeChat small program (when you don't check the domain name) to visit customers in the local area network (LAN) data server is http://abcd.123.bb (interface), fast,
Once set to check the domain name... , changing access interface to https://www.xyz.cn (after resolved at http://abcd.123.bb), and access to client/server data,
Is very slow, but also often connection timeout, don't know why!!!!!
On the tencent cloud buy domain names, SSL certificates, on tencent cloud parsing.