/********************************************************************************
 * Copyright (C) 2020 Ericsson and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/ import { inject , injectable , named } from 'inversify' ; import * as http from 'http' ; import { ContributionProvider , MaybePromise } from '../common' ; /**
 * Bind components to this symbol to filter WebSocket connections.
 */ export const WsRequestValidatorContribution = Symbol ( 'RequestValidatorContribution' ) ; export interface WsRequestValidatorContribution { param request allowWsUpgrade ( request ) : MaybePromise < boolean > ; } /**
 * Central handler of `WsRequestValidatorContribution`.
 */ @ injectable ( ) export class WsRequestValidator { @ inject ( ContributionProvider ) @ named ( WsRequestValidatorContribution ) protected readonly requestValidators : ContributionProvider < WsRequestValidatorContribution > ; /**
     * Ask all bound `WsRequestValidatorContributions` if the WebSocket connection should be allowed or not.
     */ async allowWsUpgrade ( request ) { return new Promise ( async ( resolve ) => { await Promise . all ( Array . from ( this . requestValidators . getContributions ( ) , async ( validator ) => { if ( ! await validator . allowWsUpgrade ( request ) ) { resolve ( false ) ; } } ) ) ; resolve ( true ) ; } ) ; } }