/**
 * Copyright 2023 Angus.Fenying <i@fenying.net>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/// <reference types="node" />
import * as $Net from 'node:net';
import * as D from './../Decl';
export interface ITcpClientOptions extends D.IConnectOptions {
    /**
     * The hostname the server is listening on.
     *
     * @type string
     * @default 'localhost'
     */
    hostname?: string;
    /**
     * The port number the server is listening on.
     *
     * > Set to 0 to have the operating system assign a random port.
     *
     * @type uint16
     * @default 8698
     */
    port?: number;
    /**
     * The existing socket to use.
     *
     * > If the socket is specified, `hostname` and `port` are ignored.
     *
     * > Only available at the first time connecting.
     *
     * @default null
     */
    socket?: $Net.Socket | D.ISocketFactory | null;
    /**
     * The timeout for connecting to the server, in milliseconds.
     *
     * @default 30000
     */
    connectTimeout?: number;
}
/**
 * Connect to a LwDFX server through TCP protocol.
 *
 * @param opts      Connection options.
 * @param callback  Callback function.
 */
export declare function connect(opts: ITcpClientOptions): Promise<D.IConnection>;
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