import { type IncomingMessage, type ServerResponse } from "node:http";
import type { Duplex } from "node:stream";
/**
 * onOriginError is where the creator's dev server being down is ACTUALLY
 * OBSERVED.
 *
 * The tunnel client's own `onOriginError` fires on a socket error, and it never
 * sees one: this proxy sits between the two and answers a refused connection
 * with its own clean 502, so the client reads a perfectly valid HTTP response.
 * The 502 advisory — the most common failure in the whole feature — was
 * unreachable until the hook moved here. Found by killing a real dev server
 * under a live preview, not by reading the code.
 */
export declare function proxyWeb(req: IncomingMessage, res: ServerResponse, targetPort: number, onOriginError?: () => void): void;
export declare function proxyWs(req: IncomingMessage, socket: Duplex, head: Buffer, targetPort: number): void;