lms-discovery

lms-discovery

Logitech Media Server discovery for Node.js

Install

npm install --save lms-discovery

Usage

// ESM
import discovery from 'lms-discovery';
// CJS
const discovery = require('lms-discovery');

discovery.on('discovered', (server) => {
    console.log('Server discovered:', server);
});

discovery.on('lost', (server) => {
    // Do something with lost server
});

discovery.start();

...

discovery.stop();


// Output
Server discovered: {
    ip: '192.168.1.85',     // Server's IP address
    name: 'my-lms-server',  // Server name
    ver: '8.2.1',           // Server version
    uuid: '187fa185-d108-408b-a8bd-8f5a4bb855bd',  // Unique identifier
    jsonPort: '9000',       // Port for JSON-RPC requests
    cliPort: '9090'         // Port for CLI commands and queries   
}

Run example:

npm run example

API

start([options])

Starts the discovery service.

Params

• options: (optional and all properties optional)
  • broadcastAddress: (string) network address used to transmit discovery requests. Default: 255.255.255.255.
  • discoveredTTL: (number) how long in milliseconds to wait for a discovered server to respond to a subsqeuent discovery request before it is presumed lost. Only applicable for servers that do not advertise cliPort. Default: 60000 (60 seconds).
  • discoverInterval: (number) how often in milliseconds to broadcast discovery requests. Default: 30000 (30 seconds).

discoveredTTL must be larger than discoverInterval.

stop()

Stops the discovery service.

getStatus()

Gets the status of the discovery service.

Returns

running or stop

getAllDiscovered()

Gets all servers discovered so far.

Returns

Array<ServerInfo>

setDebug(enabled[, callback])

Whether to enable debug messages.

Params

• enabled: (boolean)
• callback: (function)
  • If specified, debug messages will be passed to callback.
  • If not specified, debug messages will be printed to console.

Events

on('discovered', (server) => ...)

Emitted when a server is discovered.

Listener Params

• server: ServerInfo

on('lost', (server) => ...)

Emitted when a server is lost.

Listener Params

• server: ServerInfo

on('error', (error) => ...)

Emitted when an error has occurred.

Listener Params

• error: (any)

Changelog

1.1.0:

• Instead of detecting server lost through discoveredTTL timers, emit 'lost' events immediately as they occur for servers that advertise cliPort.

1.0.0:

• Migrate to TypeScript and package as ESM / CJS hybrid module

0.1.0:

• Initial release

License

MIT