WeiCHENandCursor
f9c4f9b01b
Provide RFC 4122 v4 fallback via getRandomValues for LAN HTTP pages where randomUUID is unavailable. Co-authored-by: Cursor <cursoragent@cursor.com>
40 lines
1.2 KiB
TypeScript
40 lines
1.2 KiB
TypeScript
const UUID_V4_REGEX =
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/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
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function formatUuidV4(bytes: Uint8Array): string {
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bytes[6] = (bytes[6] & 0x0f) | 0x40;
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bytes[8] = (bytes[8] & 0x3f) | 0x80;
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const hex = Array.from(bytes, (value) => value.toString(16).padStart(2, '0'));
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return [
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hex.slice(0, 4).join(''),
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hex.slice(4, 6).join(''),
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hex.slice(6, 8).join(''),
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hex.slice(8, 10).join(''),
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hex.slice(10, 16).join(''),
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].join('-');
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}
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/**
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* 生成客户端 turn 标识，兼容非 Secure Context（如局域网 HTTP）。
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* 优先 randomUUID；否则用 getRandomValues 生成 RFC 4122 v4 UUID。
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*/
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export function createClientTurnId(): string {
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if (typeof globalThis.crypto?.randomUUID === 'function') {
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return globalThis.crypto.randomUUID();
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}
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if (typeof globalThis.crypto?.getRandomValues === 'function') {
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const bytes = new Uint8Array(16);
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globalThis.crypto.getRandomValues(bytes);
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return formatUuidV4(bytes);
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}
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throw new Error('当前浏览器不支持安全随机标识，请升级浏览器或通过 HTTPS 访问');
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}
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export function isUuidV4(value: string): boolean {
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return UUID_V4_REGEX.test(value);
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}
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