75 lines
2.6 KiB
TypeScript
75 lines
2.6 KiB
TypeScript
/**
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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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import NodeWebSocket from 'ws';
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import { ConnectionTransport } from '../common/ConnectionTransport.js';
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import { packageVersion } from '../generated/version.js';
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import { promises as dns } from 'dns';
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export class NodeWebSocketTransport implements ConnectionTransport {
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static async create(urlString: string): Promise<NodeWebSocketTransport> {
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// TODO(jrandolf): Starting in Node 17, IPv6 is favoured over IPv4 due to a change
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// in a default option:
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// - https://github.com/nodejs/node/issues/40537,
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// Due to this, we parse and resolve the hostname manually with the previous
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// behavior according to:
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// - https://nodejs.org/api/dns.html#dnslookuphostname-options-callback
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// because of https://bugzilla.mozilla.org/show_bug.cgi?id=1769994.
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const url = new URL(urlString);
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const { address } = await dns.lookup(url.hostname, { verbatim: false });
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url.hostname = address;
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return new Promise((resolve, reject) => {
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const ws = new NodeWebSocket(url, [], {
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followRedirects: true,
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perMessageDeflate: false,
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maxPayload: 256 * 1024 * 1024, // 256Mb
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headers: {
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'User-Agent': `Puppeteer ${packageVersion}`,
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},
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});
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ws.addEventListener('open', () =>
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resolve(new NodeWebSocketTransport(ws))
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);
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ws.addEventListener('error', reject);
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});
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}
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private _ws: NodeWebSocket;
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onmessage?: (message: NodeWebSocket.Data) => void;
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onclose?: () => void;
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constructor(ws: NodeWebSocket) {
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this._ws = ws;
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this._ws.addEventListener('message', (event) => {
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if (this.onmessage) this.onmessage.call(null, event.data);
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});
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this._ws.addEventListener('close', () => {
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if (this.onclose) 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.addEventListener('error', () => {});
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}
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send(message: string): void {
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this._ws.send(message);
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}
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close(): void {
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this._ws.close();
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}
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}
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