1b2c8113ba
Currently connection assumes that transport is a websocket and tries to handle websocket-related errors. This patch: - moves ConnectionTransport interface to use callbacks instead of events. This way it could be used in browser context as well. - introduces WebSocketTransport that implements ConnectionTransport interface for ws. This is a preparation step for 2 things: - exposing `transport` option in the `puppeteer.connect` method - better support for `browserify` References #2119
66 lines
1.6 KiB
JavaScript
66 lines
1.6 KiB
JavaScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const WebSocket = require('ws');
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/**
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* @implements {!Puppeteer.ConnectionTransport}
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*/
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class WebSocketTransport {
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/**
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* @param {string} url
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* @return {!Promise<!WebSocketTransport>}
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*/
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static create(url) {
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return new Promise((resolve, reject) => {
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const ws = new WebSocket(url, { perMessageDeflate: false });
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ws.on('open', () => resolve(new WebSocketTransport(ws)));
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ws.on('error', reject);
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});
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}
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/**
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* @param {!WebSocket} ws
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*/
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constructor(ws) {
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this._ws = ws;
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this._ws.on('message', event => {
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if (this.onmessage)
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this.onmessage.call(null, event);
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});
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this._ws.on('close', event => {
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if (this.onclose)
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this.onclose.call(null);
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});
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// Silently ignore all errors - we don't know what to do with them.
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this._ws.on('error', () => {});
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this.onmessage = null;
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this.onclose = null;
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}
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/**
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* @param {string} message
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*/
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send(message) {
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this._ws.send(message);
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}
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close() {
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this._ws.close();
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}
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}
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module.exports = WebSocketTransport;
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