import { IncomingMessage } from 'http';
import { ServerHttp2Stream, Http2ServerRequest } from 'http2';
import { Socket } from 'net';
import { ProxyConnectMode } from '../../configuration';
import { Connection } from '../request';
/**
 * A handier wrapper around a CONNECT request
 *
 * @public
 */
export interface IProxyConnectAPI {
    /**
     * The original Node.js object representing the request
     */
    readonly request: IncomingMessage | Http2ServerRequest;
    /**
     * The underlying socket
     */
    readonly socket: Socket | ServerHttp2Stream;
    /**
     * The connections stack
     */
    readonly connectionsStack: readonly Readonly<Connection>[];
    /**
     * The last connection in {@link IProxyConnectAPI.connectionsStack|connectionsStack}
     */
    readonly connection: Readonly<Connection>;
    /**
     * The target hostname in the CONNECT request
     */
    readonly hostname: string;
    /**
     * The target port in the CONNECT request
     */
    readonly port: number;
    /**
     * The destination hostname that will be used in `forward` mode.
     * By default, it is equal to {@link IProxyConnectAPI.hostname|hostname}.
     * Can be changed with {@link IProxyConnectAPI.setDestination|setDestination}.
     */
    readonly destinationHostname: string;
    /**
     * The destination port that will be used in `forward` mode.
     * By default, it is equal to {@link IProxyConnectAPI.port|port}.
     * Can be changed with {@link IProxyConnectAPI.setDestination|setDestination}.
     */
    readonly destinationPort: number;
    /**
     * Sets the destination {@link IProxyConnectAPI.destinationHostname|hostname} and {@link IProxyConnectAPI.destinationPort|port}
     * that will be used when the {@link IProxyConnectAPI.process|process} method is called.
     * Also changes the {@link IProxyConnectAPI.mode|mode} to `forward`.
     * @param hostname - Destination hostname
     * @param port - Destination port
     */
    setDestination(hostname: string, port: number): void;
    /**
     * The currently selected mode, configured either by a call to {@link IProxyConnectAPI.setMode|setMode}
     * or by {@link CLIConfigurationSpec.proxyConnectMode|the global setting}
     */
    readonly mode: ProxyConnectMode;
    /**
     * Changes the {@link IProxyConnectAPI.mode|mode} that will be used when the {@link IProxyConnectAPI.process|process} method is called.
     * @param mode - mode to set
     */
    setMode(mode: ProxyConnectMode): void;
    /**
     * Processes the socket according to the mode stored in {@link IProxyConnectAPI.mode|mode}. This method is called automatically when the
     * {@link ConfigurationSpec.onProxyConnect|onProxyConnect} function finishes, but it can also be called manually before.
     */
    process(): void;
}