<!doctype html><html lang="en"><head> <meta charset="utf-8"> <script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.min.js" type="text/javascript"></script> <script src="mqtt.js" type="text/javascript"></script> <title>Chat</title></head><body> <h1>Chat</h1></body></html>
123456789101112