axis-discovery

A Node.js client library written in TypeScript capable of searching for Axis Communication cameras using Bonjour and SSDP (UPnP).

It utilizes axis-discovery-bonjour and axis-discovery-ssdp for discovery, and aggregates the information provided by the protocols into a convenient way for clients to find cameras on the network.

Table of contents

• Super simple to use
• Installation
• API
  • Discovery
  • Device

Super simple to use

import * as axis from 'axis-discovery';

const discovery = new axis.Discovery();

discovery.on('hello', (device: axis.Device) => {
    console.log(`Hello from ${device.address}`);
});

discovery.on('goodbye', (device: axis.Device) => {
    console.log(`Goodbye from ${device.address}`);
});

await discovery.start();
await discovery.search();

Installation

npm install axis-discovery axis-discovery-bonjour axis-discovery-ssdp
# or
yarn add axis-discovery axis-discovery-bonjour axis-discovery-ssdp

axis-discovery-bonjour and axis-discovery-ssdp are defined as a peer-dependencies and thus have to be installed separately.

API

Discovery

The Discovery class is the main class in the package. With it you can register for changes to cameras on the network and respond accordingly when a camera is found on, or intentionally disconnects from, the network.

class Discovery {
    /**
     * Start listen for device advertisements on all network interface
     * addresses.
     */
    start(): Promise<void>;

    /**
     * Stop listening for device advertisements.
     */
    stop(): Promise<void>;

    /**
     * Triggers a new search for devices on the network.
     */
    search(): Promise<void>;

    /**
     * Register a callback that is invoked when a device is found on the
     * network.
     */
    onHello(callback: (device: Device) => void): void;

    /**
     * Register a callback that is invoked when a device intentionally is
     * disconnecting from the network.
     */
    onGoodbye(callback: (device: Device) => void): void;
}

Device

The Device class is a immutable description of a camera on the network.

class Device {
    /**
     * Gets the address.
     */
    readonly address: string;

    /**
     * Gets the link local address.
     * For more information regarding link local addresses, please see
     * [Wikipedia]{@link https://wikipedia.org/wiki/Link-local_address}.
     */
    readonly linkLocalAddress: string | undefined;

    /**
     * Gets the port.
     */
    readonly port: number | undefined;

    /**
     * Gets the MAC address. In most situations this is identical to the
     * serial number. The exceptions are the Axis products which bundle
     * multiple physical devices into a single casing with a shared network
     * interface. Because of the shared network interface they also share
     * the same MAC address.
     */
    readonly macAddress: string;

    /**
     * Gets the short description for the end user.
     */
    readonly friendlyName: string | undefined;

    /**
     * Gets the model name.
     */
    readonly modelName: string | undefined;

    /**
     * Gets the long model description for the end user.
     */
    readonly modelDescription: string | undefined;

    /**
     * Gets the model number.
     */
    readonly modelNumber: string | undefined;

    /**
     * Gets the URL to the web page of the device.
     */
    readonly presentationURL: string | undefined;
}