/**
 * Connection information.
 *
 * `IConnection` is an interface ttype who represents connection information of the
 * remote HTTP server. You can target the remote HTTP server by wring the
 * {@link IHttpConnection.host} variable down. Also, you can configure special header values
 * by specializing the {@link IHttpConnection.headers} variable.
 *
 * If the remote HTTP server encrypts or decrypts its body data through the AES-128/256
 * algorithm, specify the {@link IHttpConnection.encryption} with {@link IEncryptionPassword}
 * or {@link IEncryptionPassword.Closure} variable.
 *
 * @author Jenogho Nam - https://github.com/samchon
 * @author Seungjun We - https://github.com/SeungjunWe
 */
export interface IHttpConnection {
    /**
     * Host address of the remote HTTP server.
     */
    host: string;
    /**
     * Header values delivered to the remote HTTP server.
     */
    headers?: Record<string, IHttpConnection.HeaderValue>;
    /**
     * Additional options for the `fetch` function.
     */
    options?: IHttpConnection.IOptions;
    /**
     * Custom fetch function.
     *
     * If you want to use custom `fetch` function instead of built-in,
     * assign your custom `fetch` function into this property.
     *
     * For reference, the `fetch` function has started to be supported
     * since version 20 of NodeJS. Therefore, if you are using NodeJS
     * version 19 or lower, you have to assign the `node-fetch` module
     * into this property.
     */
    fetch?: typeof fetch;
}
export declare namespace IHttpConnection {
    /**
     * Additional options for the `fetch` function.
     *
     * Almost same with {@link RequestInit} type of the {@link fetch} function,
     * but `body`, `headers` and `method` properties are omitted.
     *
     * The reason why defining duplicated definition of {@link RequestInit}
     * is for legacy NodeJS environments, which does not have the {@link fetch}
     * function type.
     */
    interface IOptions {
        /**
         * A string indicating how the request will interact with the browser's
         * cache to set request's cache.
         */
        cache?: "default" | "force-cache" | "no-cache" | "no-store" | "only-if-cached" | "reload";
        /**
         * A string indicating whether credentials will be sent with the request
         * always, never, or only when sent to a same-origin URL. Sets request's
         * credentials.
         */
        credentials?: "omit" | "same-origin" | "include";
        /**
         * A cryptographic hash of the resource to be fetched by request.
         *
         * Sets request's integrity.
         */
        integrity?: string;
        /**
         * A boolean to set request's keepalive.
         */
        keepalive?: boolean;
        /**
         * A string to indicate whether the request will use CORS, or will be
         * restricted to same-origin URLs.
         *
         * Sets request's mode.
         */
        mode?: "cors" | "navigate" | "no-cors" | "same-origin";
        /**
         * A string indicating whether request follows redirects, results in
         * an error upon encountering a redirect, or returns the redirect
         * (in an opaque fashion).
         *
         * Sets request's redirect.
         */
        redirect?: "error" | "follow" | "manual";
        /**
         * A string whose value is a same-origin URL, "about:client", or the
         * empty string, to set request's referrer.
         */
        referrer?: string;
        /**
         * A referrer policy to set request's referrerPolicy.
         */
        referrerPolicy?: "" | "no-referrer" | "no-referrer-when-downgrade" | "origin" | "origin-when-cross-origin" | "same-origin" | "strict-origin" | "strict-origin-when-cross-origin" | "unsafe-url";
        /**
         * An AbortSignal to set request's signal.
         */
        signal?: AbortSignal | null;
    }
    /**
     * Type of allowed header values.
     *
     * Only atomic or array of atomic values are allowed.
     */
    type HeaderValue = string | boolean | number | bigint | string | Array<boolean> | Array<number> | Array<bigint> | Array<number> | Array<string>;
}