Hey there! Let's break down the recommended ports for MQTT over WebSocket clearly—this is pretty straightforward once you get the hang of it:

• 非加密 WebSocket（ws://）：首选80端口。这是HTTP的默认端口，几乎所有网络环境都默认允许这个端口的流量通过，客户端不需要额外配置就能轻松连接，兼容性拉满。
• 加密 WebSocket Secure（wss://）：首选443端口。作为HTTPS的默认端口，它不仅能保证MQTT数据传输的安全性，同样在各种网络场景下（比如企业防火墙、公共WiFi）的通行性极好，是生产环境的必选。

Of course, you'll often see MQTT brokers pre-configured with custom ports like 8083 (for unencrypted) and 8084 (for encrypted). These work perfectly fine too, but if you're building a service for public access or cross-platform use, 80 and 443 are still the top picks—they save you the hassle of getting firewalls or clients to open up special ports.

内容的提问来源于stack exchange，提问作者powerpete