@homebridge/camera-utils/dist/ports.js

Utilities to simplify homebridge camera plugin development

import { pickPort } from 'pick-port';
// Need to reserve ports in sequence because ffmpeg uses the next port up by default.  If it's taken, ffmpeg will error
export async function reservePorts({ count = 1, type = 'udp', attemptNumber = 0, } = {}) {
    if (attemptNumber > 100) {
        throw new Error('Failed to reserve ports after 100 tries');
    }
    const pickPortOptions = {
        type,
        reserveTimeout: 15, // 15 seconds is max setup time for HomeKit streams, so the port should be in use by then
    };
    const port = await pickPort(pickPortOptions);
    const ports = [port];
    const tryAgain = () => {
        return reservePorts({
            count,
            type,
            attemptNumber: attemptNumber + 1,
        });
    };
    for (let i = 1; i < count; i++) {
        try {
            const targetConsecutivePort = port + i;
            const openPort = await pickPort({
                ...pickPortOptions,
                minPort: targetConsecutivePort,
                maxPort: targetConsecutivePort,
            });
            ports.push(openPort);
        }
        catch (_) {
            // can't reserve next port, bail and get another set
            return tryAgain();
        }
    }
    return ports;
}
export function bindToPort(socket) {
    return new Promise((resolve, reject) => {
        socket.on('error', reject);
        // 0 means select a random open port
        socket.bind(0, () => {
            const { port } = socket.address();
            resolve(port);
        });
    });
}
//# sourceMappingURL=ports.js.map