@achingbrain/ssdp/dist/src/create-sockets.js

Yet another SSDP implementation for node.js

import { createSocket } from 'node:dgram';
export async function createSockets(ssdp, signal) {
    const sockets = [];
    await Promise.allSettled((ssdp.options.sockets ?? []).map(async (options) => {
        return new Promise((resolve, reject) => {
            const socket = createSocket({
                type: options.type ?? 'udp4',
                ipv6Only: options.type === 'udp6',
                reuseAddr: true,
                signal
            }, (buf, info) => {
                ssdp.emit('transport:incoming-message', buf, info);
            });
            socket.bind(options.bind?.port, options.bind?.address);
            // @ts-expect-error .options is not a property of Socket
            socket.options = options;
            socket.on('error', (err) => {
                ssdp.emit('error', err);
            });
            socket.on('listening', () => {
                try {
                    socket.setBroadcast(true);
                    if (options.broadcast?.address != null) {
                        socket.addMembership(options.broadcast.address, socket.address().address);
                    }
                    if (options.maxHops != null) {
                        socket.setMulticastTTL(options.maxHops);
                    }
                    sockets.push(socket);
                    resolve();
                }
                catch (error) {
                    error.message = `Adding membership ${options.broadcast?.address} failed - ${error.message}`;
                    reject(error);
                }
            });
        });
    }));
    if (sockets.length === 0) {
        throw new Error('Opening all sockets failed');
    }
    return sockets;
}
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