import { createJSONRPCErrorResponse, isJSONRPCID, JSONRPC, JSONRPCClient, JSONRPCErrorCode, JSONRPCErrorException, JSONRPCErrorResponse, JSONRPCParams, JSONRPCRequest, JSONRPCResponsePromise, JSONRPCServer, JSONRPCServerMiddlewareNext, SimpleJSONRPCMethod } from "json-rpc-2.0";
import express, { Express, NextFunction } from 'express';
import * as http from 'http';
import { HttpTerminator } from 'http-terminator';
type Request = express.Request;
type Response = express.Response;
type JSONRPCParameters = JSONRPCParams | undefined;
export interface TSendHandler {
    send: (body: string | number | boolean | object | Buffer) => void;
}
/**
 * Invalid params
 *
 * @type {"Invalid params"}
 * @category Constants
 */
declare const SInvalidParams = "Invalid params";
/**
 * Invalid request
 *
 * @type {"Invalid Request"}
 * @category Constants
 */
declare const SInvalidRequest = "Invalid Request";
/**
 * Method not found
 *
 * @type {"Method not found"}
 * @category Constants
 */
declare const SMethodNotFound = "Method not found";
/**
 * Parse error
 *
 * @type {"Parse error"}
 * @category Constants
 */
declare const SParseError = "Parse error";
/**
 * Entity parse failed
 *
 * @type {"entity.parse.failed"}
 * @category Constants
 */
declare const SEntityParseFailed = "entity.parse.failed";
/**
 * No content
 *
 * @type {204}
 * @category Constants
 */
declare const CNoContent = 204;
/**
 * This is a JSON RPC server that conforms to the JSON RPC 2.0 spec as documented at https://www.jsonrpc.org/specification
 *
 * @class BaseJsonRpcServer
 * @typedef {BaseJsonRpcServer}
 * @category JSON RPC
 */
declare class BaseJsonRpcServer {
    protected mExpressServer: Express;
    protected mJsonRpcServer: JSONRPCServer;
    protected mHttpTerminator: HttpTerminator | undefined;
    protected mListeningHost: string;
    protected mListeningPort: number;
    protected mServer: http.Server | undefined;
    /**
    * Only valid when processing a request
    */
    protected mResponse: express.Response | undefined;
    /**
    * Only valid when processing a request
    */
    protected mRequest: express.Request | undefined;
    /**
     * Constructs a BaseJsonRpcServer server and returns it.
     * Listens on localhost:8080 by default, on both IPv4 and IPv6
     * To listen only on IPv4, override onBeforeListening and call dns.setDefaultResultOrder('ipv4first');
     * To listen only on IPv6, if both IPv4 and IPv6 is enabled, just pass "localhost" to the host parameter
     *
     * @param {string} [host="::"] The IP address/hostname to listen on
     * @param {number} [port=CDefaultPort] The port number to listen on
     * @returns {BaseJsonRpcServer} BaseJsonRpcServer
     */
    constructor(host?: string, port?: number);
    /**
     * Adds all necessary JSON RPC methods to this.mJsonRpcServer
     */
    protected addRPCMethods(): void;
    /**
     * Allows descendants to do something after class construction
     *
     * @returns {void} void
     */
    protected afterConstruction(): void;
    /**
     * Creates an Invalid Params JSON RPC Error exception, with the given message.
     * The caller must throw the return of this call.
     *
     * @returns {string} Invalid Params JSON RPC Error exception
     */
    protected createInvalidParamsMessage(message: string, data?: any): JSONRPCErrorException;
    /**
     * Creates an Invalid Params JSON RPC Error exception, with the message as Invalid Params.
     * The caller must throw the return of this call.
     *
     * @returns {string} Invalid Params JSON RPC Error exception
     */
    protected createInvalidParams(data?: any): JSONRPCErrorException;
    /**
     * Creates an Invalid Request JSON RPC Error response.
     *
     * @returns {string} Invalid Params JSON RPC response
     */
    protected createInvalidRequestResponse(request: any): JSONRPCErrorResponse;
    /**
     * Creates a Method not found JSON RPC Error response, with the message as Invalid Params.
     * The caller must throw the return of this call.
     *
     * @returns {string} Invalid Request JSON RPC Error exception
     */
    protected createMethodNotFoundResponse(request: any): JSONRPCErrorException;
    /**
     * Creates an Invalid Request JSON RPC Error exception, with the message as Invalid Params.
     * The caller must throw the return of this call.
     *
     * @returns {string} Invalid Request JSON RPC Error exception
     */
    protected createInvalidRequest(data?: any): JSONRPCErrorException;
    /**
     * Calls this.onParseError
     * If onParseError doesn't handle the error, doParseError will send a JSON RPC Error response
     * if the error is a parsing error, or pass the error up to the next middleware to handle
     *
     * @returns {string} Invalid Request JSON RPC Error exception
     */
    protected doParseError(err: any, req: Request, res: Response, next: NextFunction): void;
    /**
     * Handles a single or a batch JSON RPC request.
     *
     * @returns {void}
     */
    protected handleRequest(request: express.Request, response: express.Response): Promise<void>;
    /**
     * Returns RPC methods implemented by the server
     * Override to return an array of RPC methods implemented.
     * @returns {SimpleJSONRPCMethod<void>[]} array of RPC methods implemented
     */
    protected implementedRPCMethods(): SimpleJSONRPCMethod<void>[];
    /**
     * Initializes the Express server and returns it
     *
     * @returns {Express}
     */
    protected initExpress(): import("express-serve-static-core").Express;
    /**
     * Initializes the JSON RPC server and returns it
     *
     * @returns {JSONRPCServer}
     */
    protected initJsonRpcServer(): JSONRPCServer<void>;
    /**
     * Returns a JSON parse error during express.json parsing
     *
     * @returns {void}
     */
    protected initParseErrorHandler(aExpress: Express): void;
    /**
     * Error listener for JSON RPC, override to handle.
     * Called when an error occurred during the JSON RPC method call.
     * Do not throw an exception within this method
     *
     * @returns {void}
     */
    protected JsonRpcErrorListener(message: string, data: unknown): void;
    /**
     * Starts listening for RPC requests
     */
    listen(port?: number): Promise<void>;
    /**
     * Returns the path on which to listen to requests for. Override to listen on another path.
     *
     * @returns {string} path on which to listen to requests for
     */
    get listeningPath(): string;
    protected log(...data: any[]): void;
    /**
     * Displays the JSON RPC methods being listened to
     */
    protected logListeningMethods(methods: SimpleJSONRPCMethod<void>[]): void;
    /**
     * Called before every valid JSON body is dispatched, this doesn't mean that the request is a valid JSON RPC call though.
     * If the request is valid, the method should call next(request, serverParams) and return its result.
     * If the request is invalid, it should throw an appropriate error.
     *
     * @returns {JSONRPCResponsePromise}
     */
    protected onBeforeDispatchRequest(next: JSONRPCServerMiddlewareNext<void>, request: JSONRPCRequest, serverParams: void | undefined): JSONRPCResponsePromise;
    /**
     * This is called before the JSON RPC server starts listening on the port
     * Override this, for example, to listen just on IPv4 by calling dns.setDefaultResultOrder('ipv4first');
     */
    protected onBeforeListening(): void;
    /**
     * Called when there's a parsing error. The overridden method should create a JSON RPC Error response and
     * send it using response.send(err_response)
     * If the error is not handled, this class will return an error
     *
     * @returns {void}
     */
    protected onParseError(err: any, request: Request, response: TSendHandler): void;
    /**
     * Creates an Invalid Request JSON RPC Error exception and sends it.
     *
     * @returns {}
     */
    protected sendInvalidRequest(data?: any): void;
    /**
     * Creates an Invalid Params JSON RPC Error exception and sends it.
     *
     * @returns {}
     */
    protected sendInvalidParams(data?: any): void;
    /**
     * Stops the RPC server. This can be called by a RPC call or by the app itself
     */
    stop(): Promise<void>;
    protected stopListening(): Promise<void>;
    /**
     * Waits for the server to starts listening before returning.
     * Override to disable this
     */
    protected waitForServerListening(): Promise<void>;
    protected waitForServerStopListening(): Promise<void>;
    echo(params: JSONRPCParameters): any;
}
export { BaseJsonRpcServer, SimpleJSONRPCMethod, Request, Response, createJSONRPCErrorResponse, isJSONRPCID, JSONRPCErrorCode, JSONRPCErrorException, JSONRPC, JSONRPCClient, JSONRPCParams, JSONRPCRequest, JSONRPCResponsePromise, JSONRPCServer, JSONRPCServerMiddlewareNext, JSONRPCParameters, SEntityParseFailed, SInvalidParams, SInvalidRequest, SMethodNotFound, SParseError, CNoContent };