@svta/common-media-library/dist/drm/fairplay/getLicenseServerUrl.js

A common library for media playback in JavaScript

/**
 * Retrieves the FairPlay license server URL from InitData.
 *
 * @param initData - The initialization data (PSSH box)
 * @returns The license server URL as a string
 *
 * @group DRM
 * @beta
 *
 * @example
 * {@includeCode ../../../test/drm/fairplay/getLicenseServerUrl.test.ts#example}
 */
export function getLicenseServerUrl(initData) {
    let initDataString = '';
    for (let i = 0; i < initData.length; i++) {
        if (initData[i] !== 0) { // Ignore null characters
            initDataString += String.fromCharCode(initData[i]);
        }
    }
    const match = initDataString.match(/skd:\/\/([^"\s]+)/);
    return match ? `https://${match[1]}` : '';
}
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