309d8115c3
Replacing the Node EventEmitter with Mitt caused more problems than anticipated for end users due to the API differences and the amount of people who relied on the EventEmitter API. In hindsight this clearly should have been explored more and then released as a breaking v4. This commit rolls us back to the built in Node EventEmitter library which we can release to get everyone back on stable builds. We can then consider our approach to migrating to Mitt and when we do do that we can release it as a breaking change and properly document the migration strategy and approach.
58 lines
1.8 KiB
TypeScript
58 lines
1.8 KiB
TypeScript
/**
|
|
* Copyright 2018 Google Inc. All rights reserved.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
import * as NodeWebSocket from 'ws';
|
|
import type { ConnectionTransport } from './ConnectionTransport';
|
|
|
|
export class WebSocketTransport implements ConnectionTransport {
|
|
static create(url: string): Promise<WebSocketTransport> {
|
|
return new Promise((resolve, reject) => {
|
|
const ws = new NodeWebSocket(url, [], {
|
|
perMessageDeflate: false,
|
|
maxPayload: 256 * 1024 * 1024, // 256Mb
|
|
});
|
|
|
|
ws.addEventListener('open', () => resolve(new WebSocketTransport(ws)));
|
|
ws.addEventListener('error', reject);
|
|
});
|
|
}
|
|
|
|
_ws: NodeWebSocket;
|
|
onmessage?: (message: string) => void;
|
|
onclose?: () => void;
|
|
|
|
constructor(ws: NodeWebSocket) {
|
|
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', () => {});
|
|
this.onmessage = null;
|
|
this.onclose = null;
|
|
}
|
|
|
|
send(message): void {
|
|
this._ws.send(message);
|
|
}
|
|
|
|
close(): void {
|
|
this._ws.close();
|
|
}
|
|
}
|