@embedded32/ethernet

UDP, TCP, and MQTT transports plus compact NanoProto encoding for moving J1939-shaped messages over IP in Embedded32 labs.

Installation

npm install @embedded32/ethernet

Minimum runnable example

import { UDPServer, UDPClient } from '@embedded32/ethernet';

const server = new UDPServer(5000);
await server.start();

server.on('message', (msg) => console.log('UDP', msg));

const client = new UDPClient();
await client.send({ hello: 'embedded32' }, '127.0.0.1', 5000);

Public API overview

| Export | Role | | ------------------------------------ | ------------------------------ | | UDPServer, UDPClient | Datagram messaging | | TCPServer, TCPClient | Stream connections | | MQTTClient | Pub/sub with reconnect helpers | | J1939NanoProto, NanoProtoEncoder | Compact binary J1939 payloads |

Runtime requirements

• Node.js 18+
• ESM imports
• Network permission for bind/connect operations

Hardware requirements

None - uses host networking stack. MQTT labs need a broker (local or classroom server).

Browser compatibility

Node.js only in v1.0. Browser clients may consume MQTT/WebSocket via other stacks; this package targets gateway hosts.

Common errors

| Error | Fix | | ------------------- | --------------------------------------------- | | EADDRINUSE | Pick a free port or stop prior server | | MQTT never connects | Verify broker URL, firewall, credentials | | Wrong package name | Install @embedded32/ethernet scoped package |

Related packages

• @embedded32/bridge - CAN ↔ MQTT/UDP routing
• @embedded32/core - runtime modules that publish telemetry
• @embedded32/sdk-js - application consumers

Version compatibility

@embedded32/[email protected] with @embedded32/[email protected].

License

MIT © Mukesh Mani Tripathi