289 строки
8.4 KiB
JavaScript
289 строки
8.4 KiB
JavaScript
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @format
|
|
* @flow
|
|
*/
|
|
|
|
import Blob from '../Blob/Blob';
|
|
import type {BlobData} from '../Blob/BlobTypes';
|
|
import BlobManager from '../Blob/BlobManager';
|
|
import NativeEventEmitter from '../EventEmitter/NativeEventEmitter';
|
|
import binaryToBase64 from '../Utilities/binaryToBase64';
|
|
import Platform from '../Utilities/Platform';
|
|
import type {EventSubscription} from '../vendor/emitter/EventEmitter';
|
|
import NativeWebSocketModule from './NativeWebSocketModule';
|
|
import WebSocketEvent from './WebSocketEvent';
|
|
import base64 from 'base64-js';
|
|
import EventTarget from 'event-target-shim';
|
|
import invariant from 'invariant';
|
|
|
|
type ArrayBufferView =
|
|
| Int8Array
|
|
| Uint8Array
|
|
| Uint8ClampedArray
|
|
| Int16Array
|
|
| Uint16Array
|
|
| Int32Array
|
|
| Uint32Array
|
|
| Float32Array
|
|
| Float64Array
|
|
| DataView;
|
|
|
|
type BinaryType = 'blob' | 'arraybuffer';
|
|
|
|
const CONNECTING = 0;
|
|
const OPEN = 1;
|
|
const CLOSING = 2;
|
|
const CLOSED = 3;
|
|
|
|
const CLOSE_NORMAL = 1000;
|
|
|
|
const WEBSOCKET_EVENTS = ['close', 'error', 'message', 'open'];
|
|
|
|
let nextWebSocketId = 0;
|
|
|
|
type WebSocketEventDefinitions = {
|
|
websocketOpen: [{id: number, protocol: string}],
|
|
websocketClosed: [{id: number, code: number, reason: string}],
|
|
websocketMessage: [
|
|
| {type: 'binary', id: number, data: string}
|
|
| {type: 'text', id: number, data: string}
|
|
| {type: 'blob', id: number, data: BlobData},
|
|
],
|
|
websocketFailed: [{id: number, message: string}],
|
|
};
|
|
|
|
/**
|
|
* Browser-compatible WebSockets implementation.
|
|
*
|
|
* See https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
|
|
* See https://github.com/websockets/ws
|
|
*/
|
|
class WebSocket extends (EventTarget(...WEBSOCKET_EVENTS): any) {
|
|
static CONNECTING: number = CONNECTING;
|
|
static OPEN: number = OPEN;
|
|
static CLOSING: number = CLOSING;
|
|
static CLOSED: number = CLOSED;
|
|
|
|
CONNECTING: number = CONNECTING;
|
|
OPEN: number = OPEN;
|
|
CLOSING: number = CLOSING;
|
|
CLOSED: number = CLOSED;
|
|
|
|
_socketId: number;
|
|
_eventEmitter: NativeEventEmitter<WebSocketEventDefinitions>;
|
|
_subscriptions: Array<EventSubscription>;
|
|
_binaryType: ?BinaryType;
|
|
|
|
onclose: ?Function;
|
|
onerror: ?Function;
|
|
onmessage: ?Function;
|
|
onopen: ?Function;
|
|
|
|
bufferedAmount: number;
|
|
extension: ?string;
|
|
protocol: ?string;
|
|
readyState: number = CONNECTING;
|
|
url: ?string;
|
|
|
|
constructor(
|
|
url: string,
|
|
protocols: ?string | ?Array<string>,
|
|
options: ?{headers?: {origin?: string, ...}, ...},
|
|
) {
|
|
super();
|
|
this.url = url;
|
|
if (typeof protocols === 'string') {
|
|
protocols = [protocols];
|
|
}
|
|
|
|
const {headers = {}, ...unrecognized} = options || {};
|
|
|
|
// Preserve deprecated backwards compatibility for the 'origin' option
|
|
if (unrecognized && typeof unrecognized.origin === 'string') {
|
|
console.warn(
|
|
'Specifying `origin` as a WebSocket connection option is deprecated. Include it under `headers` instead.',
|
|
);
|
|
/* $FlowFixMe[prop-missing] (>=0.54.0 site=react_native_fb,react_native_
|
|
* oss) This comment suppresses an error found when Flow v0.54 was
|
|
* deployed. To see the error delete this comment and run Flow. */
|
|
headers.origin = unrecognized.origin;
|
|
/* $FlowFixMe[prop-missing] (>=0.54.0 site=react_native_fb,react_native_
|
|
* oss) This comment suppresses an error found when Flow v0.54 was
|
|
* deployed. To see the error delete this comment and run Flow. */
|
|
delete unrecognized.origin;
|
|
}
|
|
|
|
// Warn about and discard anything else
|
|
if (Object.keys(unrecognized).length > 0) {
|
|
console.warn(
|
|
'Unrecognized WebSocket connection option(s) `' +
|
|
Object.keys(unrecognized).join('`, `') +
|
|
'`. ' +
|
|
'Did you mean to put these under `headers`?',
|
|
);
|
|
}
|
|
|
|
if (!Array.isArray(protocols)) {
|
|
protocols = null;
|
|
}
|
|
|
|
this._eventEmitter = new NativeEventEmitter(
|
|
// T88715063: NativeEventEmitter only used this parameter on iOS. Now it uses it on all platforms, so this code was modified automatically to preserve its behavior
|
|
// If you want to use the native module on other platforms, please remove this condition and test its behavior
|
|
Platform.OS !== 'ios' ? null : NativeWebSocketModule,
|
|
);
|
|
this._socketId = nextWebSocketId++;
|
|
this._registerEvents();
|
|
NativeWebSocketModule.connect(url, protocols, {headers}, this._socketId);
|
|
}
|
|
|
|
get binaryType(): ?BinaryType {
|
|
return this._binaryType;
|
|
}
|
|
|
|
set binaryType(binaryType: BinaryType): void {
|
|
if (binaryType !== 'blob' && binaryType !== 'arraybuffer') {
|
|
throw new Error("binaryType must be either 'blob' or 'arraybuffer'");
|
|
}
|
|
if (this._binaryType === 'blob' || binaryType === 'blob') {
|
|
invariant(
|
|
BlobManager.isAvailable,
|
|
'Native module BlobModule is required for blob support',
|
|
);
|
|
if (binaryType === 'blob') {
|
|
BlobManager.addWebSocketHandler(this._socketId);
|
|
} else {
|
|
BlobManager.removeWebSocketHandler(this._socketId);
|
|
}
|
|
}
|
|
this._binaryType = binaryType;
|
|
}
|
|
|
|
close(code?: number, reason?: string): void {
|
|
if (this.readyState === this.CLOSING || this.readyState === this.CLOSED) {
|
|
return;
|
|
}
|
|
|
|
this.readyState = this.CLOSING;
|
|
this._close(code, reason);
|
|
}
|
|
|
|
send(data: string | ArrayBuffer | ArrayBufferView | Blob): void {
|
|
if (this.readyState === this.CONNECTING) {
|
|
throw new Error('INVALID_STATE_ERR');
|
|
}
|
|
|
|
if (data instanceof Blob) {
|
|
invariant(
|
|
BlobManager.isAvailable,
|
|
'Native module BlobModule is required for blob support',
|
|
);
|
|
BlobManager.sendOverSocket(data, this._socketId);
|
|
return;
|
|
}
|
|
|
|
if (typeof data === 'string') {
|
|
NativeWebSocketModule.send(data, this._socketId);
|
|
return;
|
|
}
|
|
|
|
if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
|
|
NativeWebSocketModule.sendBinary(binaryToBase64(data), this._socketId);
|
|
return;
|
|
}
|
|
|
|
throw new Error('Unsupported data type');
|
|
}
|
|
|
|
ping(): void {
|
|
if (this.readyState === this.CONNECTING) {
|
|
throw new Error('INVALID_STATE_ERR');
|
|
}
|
|
|
|
NativeWebSocketModule.ping(this._socketId);
|
|
}
|
|
|
|
_close(code?: number, reason?: string): void {
|
|
// See https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent
|
|
const statusCode = typeof code === 'number' ? code : CLOSE_NORMAL;
|
|
const closeReason = typeof reason === 'string' ? reason : '';
|
|
NativeWebSocketModule.close(statusCode, closeReason, this._socketId);
|
|
|
|
if (BlobManager.isAvailable && this._binaryType === 'blob') {
|
|
BlobManager.removeWebSocketHandler(this._socketId);
|
|
}
|
|
}
|
|
|
|
_unregisterEvents(): void {
|
|
this._subscriptions.forEach(e => e.remove());
|
|
this._subscriptions = [];
|
|
}
|
|
|
|
_registerEvents(): void {
|
|
this._subscriptions = [
|
|
this._eventEmitter.addListener('websocketMessage', ev => {
|
|
if (ev.id !== this._socketId) {
|
|
return;
|
|
}
|
|
let data = ev.data;
|
|
switch (ev.type) {
|
|
case 'binary':
|
|
data = base64.toByteArray(ev.data).buffer;
|
|
break;
|
|
case 'blob':
|
|
data = BlobManager.createFromOptions(ev.data);
|
|
break;
|
|
}
|
|
this.dispatchEvent(new WebSocketEvent('message', {data}));
|
|
}),
|
|
this._eventEmitter.addListener('websocketOpen', ev => {
|
|
if (ev.id !== this._socketId) {
|
|
return;
|
|
}
|
|
this.readyState = this.OPEN;
|
|
this.protocol = ev.protocol;
|
|
this.dispatchEvent(new WebSocketEvent('open'));
|
|
}),
|
|
this._eventEmitter.addListener('websocketClosed', ev => {
|
|
if (ev.id !== this._socketId) {
|
|
return;
|
|
}
|
|
this.readyState = this.CLOSED;
|
|
this.dispatchEvent(
|
|
new WebSocketEvent('close', {
|
|
code: ev.code,
|
|
reason: ev.reason,
|
|
}),
|
|
);
|
|
this._unregisterEvents();
|
|
this.close();
|
|
}),
|
|
this._eventEmitter.addListener('websocketFailed', ev => {
|
|
if (ev.id !== this._socketId) {
|
|
return;
|
|
}
|
|
this.readyState = this.CLOSED;
|
|
this.dispatchEvent(
|
|
new WebSocketEvent('error', {
|
|
message: ev.message,
|
|
}),
|
|
);
|
|
this.dispatchEvent(
|
|
new WebSocketEvent('close', {
|
|
message: ev.message,
|
|
}),
|
|
);
|
|
this._unregisterEvents();
|
|
this.close();
|
|
}),
|
|
];
|
|
}
|
|
}
|
|
|
|
module.exports = WebSocket;
|