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/**
* @license
* Copyright 2020 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
import type {ConnectionTransport} from './ConnectionTransport.js';
/**
* @internal
*/
export class BrowserWebSocketTransport implements ConnectionTransport {
static create(url: string): Promise<BrowserWebSocketTransport> {
return new Promise((resolve, reject) => {
const ws = new WebSocket(url);
ws.addEventListener('open', () => {
return resolve(new BrowserWebSocketTransport(ws));
});
ws.addEventListener('error', reject);
});
}
#ws: WebSocket;
onmessage?: (message: string) => void;
onclose?: () => void;
constructor(ws: WebSocket) {
this.#ws = ws;
this.#ws.addEventListener('message', event => {
if (this.onmessage) {
this.onmessage.call(null, event.data);
}
});
this.#ws.addEventListener('close', () => {
if (this.onclose) {
this.onclose.call(null);
}
});
// Silently ignore all errors - we don't know what to do with them.
this.#ws.addEventListener('error', () => {});
}
send(message: string): void {
this.#ws.send(message);
}
close(): void {
this.#ws.close();
}
}
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