mqtt5

mqtt5 is a client library for the MQTT protocol, written in Typescript for deno and the browser.

mqtt5 supports Mqtt protocol versions 5.0 and 3.1.1.

We have confirmed that deno version 1.44.2 or later works.

Usage

Deno CLI

import { Mqtt, MqttProperties, MqttClient } from "https://github.com/ymjacky/mqtt5/raw/main/deno/mod.ts";

Browser

The following command creates mqtt5.js in the browser directory.

deno task build_ems

Import and use mqtt5.js.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Test</title>
  </head>
  <body>
    <script type="module">
      import { Mqtt, WebSocketMqttClient } from './mqtt5.mjs';

      const logger = (msg, ...args) =>  {
        console.log('[WS-client]', msg, ...args);
      }

      async function main() {
        const client = new WebSocketMqttClient({
          url: new URL('wss://localhost:18083'),
          clientId: 'someone',
          clean: true,
          logger: logger,
          protocolVersion: Mqtt.ProtocolVersion.MQTT_V5,
          keepAlive: 60,
        });

        await client.connect();
      }
      main();
    </script>
  </body>
</html>