wehub-resource-sync
25 lines
847 B
TypeScript
25 lines
847 B
TypeScript
import { isIP } from "node:net";
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export type ProxyFamily = "auto" | "ipv4" | "ipv6";
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/** Remove the surrounding brackets from an IPv6 literal host (`[::1]` -> `::1`). */
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export function stripIpv6Brackets(host: string): string {
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if (typeof host !== "string") return "";
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if (host.startsWith("[") && host.endsWith("]")) {
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return host.slice(1, -1);
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}
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return host;
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}
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/** 4 / 6 if the host is an IP literal (brackets tolerated), null if it is a hostname. */
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export function detectIpLiteralFamily(host: string): 4 | 6 | null {
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const bare = stripIpv6Brackets(host);
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const v = isIP(bare);
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return v === 0 ? null : (v as 4 | 6);
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}
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/** Normalize a stored family directive; anything unknown means "auto". */
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export function parseProxyFamily(value: unknown): ProxyFamily {
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return value === "ipv4" || value === "ipv6" ? value : "auto";
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}
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