61 lines
1.7 KiB
TypeScript
61 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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/**
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* @internal
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*/
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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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return 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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#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) {
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this.onmessage.call(null, event.data);
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}
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});
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this.#ws.addEventListener('close', () => {
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if (this.onclose) {
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this.onclose.call(null);
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}
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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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