f63a123ece
This PR updates the socket transport code to swap between a Node web socket transport or a web one based on the `isNode` environment. It also adds unit tests to the browser tests that show we can connect in a browser.
56 lines
1.7 KiB
TypeScript
56 lines
1.7 KiB
TypeScript
/**
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* Copyright 2020 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 { ConnectionTransport } from './ConnectionTransport.js';
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export class BrowserWebSocketTransport implements ConnectionTransport {
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static create(url: string): Promise<BrowserWebSocketTransport> {
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return new Promise((resolve, reject) => {
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const ws = new WebSocket(url);
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ws.addEventListener('open', () =>
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resolve(new BrowserWebSocketTransport(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: WebSocket;
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onmessage?: (message: string) => void;
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onclose?: () => void;
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constructor(ws: WebSocket) {
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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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this.onmessage = null;
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this.onclose = null;
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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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