@theia/core/src/node/messaging/test/test-web-socket-channel.ts

Theia is a cloud & desktop IDE framework implemented in TypeScript.

// *****************************************************************************
// Copyright (C) 2018 TypeFox 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 * as http from 'http';
import * as https from 'https';
import { AddressInfo } from 'net';
import { io, Socket } from 'socket.io-client';
import { Channel, ChannelMultiplexer } from '../../../common/message-rpc/channel';
import { IWebSocket, WebSocketChannel } from '../../../common/messaging/web-socket-channel';

export class TestWebSocketChannelSetup {
    public readonly multiplexer: ChannelMultiplexer;
    public readonly channel: Channel;

    constructor({ server, path }: {
        server: http.Server | https.Server,
        path: string
    }) {
        const socket = io(`ws://localhost:${(server.address() as AddressInfo).port}${WebSocketChannel.wsPath}`);
        this.channel = new WebSocketChannel(toIWebSocket(socket));
        this.multiplexer = new ChannelMultiplexer(this.channel);
        socket.on('connect', () => {
            this.multiplexer.open(path);
        });
        socket.connect();
    }
}

function toIWebSocket(socket: Socket): IWebSocket {
    return {
        close: () => {
            socket.removeAllListeners('disconnect');
            socket.removeAllListeners('error');
            socket.removeAllListeners('message');
            socket.close();
        },
        isConnected: () => socket.connected,
        onClose: cb => socket.on('disconnect', reason => cb(reason)),
        onError: cb => socket.on('error', reason => cb(reason)),
        onMessage: cb => socket.on('message', data => cb(data)),
        send: message => socket.emit('message', message)
    };
}