import { EventEmitter } from "node:events";
import type { Authenticator } from "./auth.js";
import { GossipMessage } from "./gossip.js";
export interface GossipUDPConfig {
    /** The local address to bind to. */
    address: string;
    /** The local port to bind to. */
    port: number;
}
/**
 * Handles sending and receiving of gossip messages over UDP.
 * It's essentially the low-level network driver for the gossip protocol.
 */
export declare class GossipUDP extends EventEmitter {
    private socket;
    private readonly config;
    private readonly auth?;
    private readonly log;
    private readonly warnedUnauthorizedPeers;
    constructor(config: GossipUDPConfig & {
        auth?: Authenticator;
    });
    /**
     * Binds the UDP socket and starts listening for messages.
     */
    start(): Promise<void>;
    /**
     * Stops the UDP socket.
     */
    stop(): Promise<void>;
    /**
     * Sends a gossip message to a target address.
     * @param message The GossipMessage to send.
     * @param targetAddress The target IP address.
     * @param targetPort The target port.
     */
    send(message: GossipMessage, targetAddress: string, targetPort: number): Promise<void>;
}
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