react-native/Libraries/WebSocket/WebSocketBase.js

99 lines
2.2 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule WebSocketBase
*/
'use strict';
var EventTarget = require('event-target-shim');
/**
* Shared base for platform-specific WebSocket implementations.
*/
class WebSocketBase extends EventTarget {
CONNECTING: number;
OPEN: number;
CLOSING: number;
CLOSED: number;
onclose: ?Function;
onerror: ?Function;
onmessage: ?Function;
onopen: ?Function;
binaryType: ?string;
bufferedAmount: number;
extension: ?string;
protocol: ?string;
readyState: number;
url: ?string;
constructor(url: string, protocols: ?any) {
super();
this.CONNECTING = 0;
this.OPEN = 1;
this.CLOSING = 2;
this.CLOSED = 3;
if (!protocols) {
protocols = [];
}
this.connectToSocketImpl(url);
}
close(): void {
if (this.readyState === WebSocketBase.CLOSING ||
this.readyState === WebSocketBase.CLOSED) {
return;
}
if (this.readyState === WebSocketBase.CONNECTING) {
this.cancelConnectionImpl();
}
this.closeConnectionImpl();
}
send(data: any): void {
if (this.readyState === WebSocketBase.CONNECTING) {
throw new Error('INVALID_STATE_ERR');
}
if (typeof data === 'string') {
this.sendStringImpl(data);
} else if (data instanceof ArrayBuffer) {
this.sendArrayBufferImpl(data);
} else {
throw new Error('Not supported data type');
}
}
closeConnectionImpl(): void {
throw new Error('Subclass must define closeConnectionImpl method');
}
connectToSocketImpl(): void {
throw new Error('Subclass must define connectToSocketImpl method');
}
cancelConnectionImpl(): void {
throw new Error('Subclass must define cancelConnectionImpl method');
}
sendStringImpl(): void {
throw new Error('Subclass must define sendStringImpl method');
}
sendArrayBufferImpl(): void {
throw new Error('Subclass must define sendArrayBufferImpl method');
}
}
module.exports = WebSocketBase;