/**
 * Connection information.
 *
 * `IHttpConnection` is an interface type that represents connection information of
 * the remote HTTP server. You can target the remote HTTP server by writing 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 Jeongho 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>;
}