lan-discovery

Installation

$ npm install lan-discovery --save
$ node test.js

Usage

Example

const LanDiscovery = require('lan-discovery');
const CidrRange = require('cidr-range');
let discovery = new LanDiscovery({ verbose: false, timeout: 60 });
discovery.on(LanDiscovery.EVENT_DEVICE_INFOS, (device) => {
    console.log('--> event '+ LanDiscovery.EVENT_DEVICE_INFOS +' :\n', device);
});
 
let myInterface = await discovery.getDefaultInterface();
let tabIP = CidrRange(myInterface.cidr);
discovery.startScan({ ipArrayToScan: tabIP });

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EVENTS

EVENT_SCAN_RESPONSE : one device just responded to ping EVENT_DEVICE_INFOS : we juste retrieve one device informations EVENT_SCAN_COMPLETE : ping scan complete EVENT_DEVICES_INFOS : we retrieve all devices informations

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async arpTable(): Promise<Array>

Retrieves the network's arp table

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async deviceInfos(): Promise<Object>

Get all informations about a device identified by his IP address

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async deviceIP(mac: string): Promise<string | null>

Get the IP address for given MAC address Warning : can return null if the lan has not been scanned recently

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async deviceMAC(ip: string): Promise<string | null>

Get the MAC address for given IP address Warning : can return null if you haven't previously send a ping request

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async deviceName(ip: string): Promise<string | null>

Get hostname from ip address

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async getDefaultInterface(): Promise<Object>

Return active network informations

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isIP(ip: string): boolean

Checks if an IP address is valid

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isMAC(mac: string): boolean

Checks if a MAC address is valid

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async osPingCommand(ip: string): Promise<bool | null>

Ping an ip address with os ping command (slower but usefull to update the os arp table)

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startScan(): This

Start the lan scan (Node ICMP Requests) and return the class object

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Credits

This librarie is heavyly inspired from theses modules :

• device-discovery (Mark Tiedemann)
• arpping (haf-decent)
• @network-utils/arp-lookup (Justin Taddei)
• @network-utils/tcp-ping (Justin Taddei)
• default-gateway (Sindre Sorhus)

... but re-writed to fit my needs :

• get ip/mac/name with one cross platform librarie (at least linux and windows)
• no more nmap dependencies
• use of nodejs ping implementation (net-ping) to keep performance
• use of ES8 keyword async/await
• use class and class inheritance
• use of event pattern

License

MIT