2358 lines
72 KiB
JavaScript
2358 lines
72 KiB
JavaScript
/*!
|
|
* Engine.IO v6.5.3
|
|
* (c) 2014-2023 Guillermo Rauch
|
|
* Released under the MIT License.
|
|
*/
|
|
(function (global, factory) {
|
|
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
|
|
typeof define === 'function' && define.amd ? define(factory) :
|
|
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.eio = factory());
|
|
})(this, (function () { 'use strict';
|
|
|
|
function _typeof(obj) {
|
|
"@babel/helpers - typeof";
|
|
|
|
if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
|
|
_typeof = function (obj) {
|
|
return typeof obj;
|
|
};
|
|
} else {
|
|
_typeof = function (obj) {
|
|
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
|
|
};
|
|
}
|
|
return _typeof(obj);
|
|
}
|
|
function _classCallCheck(instance, Constructor) {
|
|
if (!(instance instanceof Constructor)) {
|
|
throw new TypeError("Cannot call a class as a function");
|
|
}
|
|
}
|
|
function _defineProperties(target, props) {
|
|
for (var i = 0; i < props.length; i++) {
|
|
var descriptor = props[i];
|
|
descriptor.enumerable = descriptor.enumerable || false;
|
|
descriptor.configurable = true;
|
|
if ("value" in descriptor) descriptor.writable = true;
|
|
Object.defineProperty(target, descriptor.key, descriptor);
|
|
}
|
|
}
|
|
function _createClass(Constructor, protoProps, staticProps) {
|
|
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
|
|
if (staticProps) _defineProperties(Constructor, staticProps);
|
|
return Constructor;
|
|
}
|
|
function _extends() {
|
|
_extends = Object.assign || function (target) {
|
|
for (var i = 1; i < arguments.length; i++) {
|
|
var source = arguments[i];
|
|
for (var key in source) {
|
|
if (Object.prototype.hasOwnProperty.call(source, key)) {
|
|
target[key] = source[key];
|
|
}
|
|
}
|
|
}
|
|
return target;
|
|
};
|
|
return _extends.apply(this, arguments);
|
|
}
|
|
function _inherits(subClass, superClass) {
|
|
if (typeof superClass !== "function" && superClass !== null) {
|
|
throw new TypeError("Super expression must either be null or a function");
|
|
}
|
|
subClass.prototype = Object.create(superClass && superClass.prototype, {
|
|
constructor: {
|
|
value: subClass,
|
|
writable: true,
|
|
configurable: true
|
|
}
|
|
});
|
|
if (superClass) _setPrototypeOf(subClass, superClass);
|
|
}
|
|
function _getPrototypeOf(o) {
|
|
_getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
|
|
return o.__proto__ || Object.getPrototypeOf(o);
|
|
};
|
|
return _getPrototypeOf(o);
|
|
}
|
|
function _setPrototypeOf(o, p) {
|
|
_setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
|
|
o.__proto__ = p;
|
|
return o;
|
|
};
|
|
return _setPrototypeOf(o, p);
|
|
}
|
|
function _isNativeReflectConstruct() {
|
|
if (typeof Reflect === "undefined" || !Reflect.construct) return false;
|
|
if (Reflect.construct.sham) return false;
|
|
if (typeof Proxy === "function") return true;
|
|
try {
|
|
Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));
|
|
return true;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
}
|
|
function _construct(Parent, args, Class) {
|
|
if (_isNativeReflectConstruct()) {
|
|
_construct = Reflect.construct;
|
|
} else {
|
|
_construct = function _construct(Parent, args, Class) {
|
|
var a = [null];
|
|
a.push.apply(a, args);
|
|
var Constructor = Function.bind.apply(Parent, a);
|
|
var instance = new Constructor();
|
|
if (Class) _setPrototypeOf(instance, Class.prototype);
|
|
return instance;
|
|
};
|
|
}
|
|
return _construct.apply(null, arguments);
|
|
}
|
|
function _isNativeFunction(fn) {
|
|
return Function.toString.call(fn).indexOf("[native code]") !== -1;
|
|
}
|
|
function _wrapNativeSuper(Class) {
|
|
var _cache = typeof Map === "function" ? new Map() : undefined;
|
|
_wrapNativeSuper = function _wrapNativeSuper(Class) {
|
|
if (Class === null || !_isNativeFunction(Class)) return Class;
|
|
if (typeof Class !== "function") {
|
|
throw new TypeError("Super expression must either be null or a function");
|
|
}
|
|
if (typeof _cache !== "undefined") {
|
|
if (_cache.has(Class)) return _cache.get(Class);
|
|
_cache.set(Class, Wrapper);
|
|
}
|
|
function Wrapper() {
|
|
return _construct(Class, arguments, _getPrototypeOf(this).constructor);
|
|
}
|
|
Wrapper.prototype = Object.create(Class.prototype, {
|
|
constructor: {
|
|
value: Wrapper,
|
|
enumerable: false,
|
|
writable: true,
|
|
configurable: true
|
|
}
|
|
});
|
|
return _setPrototypeOf(Wrapper, Class);
|
|
};
|
|
return _wrapNativeSuper(Class);
|
|
}
|
|
function _assertThisInitialized(self) {
|
|
if (self === void 0) {
|
|
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
|
|
}
|
|
return self;
|
|
}
|
|
function _possibleConstructorReturn(self, call) {
|
|
if (call && (typeof call === "object" || typeof call === "function")) {
|
|
return call;
|
|
}
|
|
return _assertThisInitialized(self);
|
|
}
|
|
function _createSuper(Derived) {
|
|
var hasNativeReflectConstruct = _isNativeReflectConstruct();
|
|
return function _createSuperInternal() {
|
|
var Super = _getPrototypeOf(Derived),
|
|
result;
|
|
if (hasNativeReflectConstruct) {
|
|
var NewTarget = _getPrototypeOf(this).constructor;
|
|
result = Reflect.construct(Super, arguments, NewTarget);
|
|
} else {
|
|
result = Super.apply(this, arguments);
|
|
}
|
|
return _possibleConstructorReturn(this, result);
|
|
};
|
|
}
|
|
function _superPropBase(object, property) {
|
|
while (!Object.prototype.hasOwnProperty.call(object, property)) {
|
|
object = _getPrototypeOf(object);
|
|
if (object === null) break;
|
|
}
|
|
return object;
|
|
}
|
|
function _get(target, property, receiver) {
|
|
if (typeof Reflect !== "undefined" && Reflect.get) {
|
|
_get = Reflect.get;
|
|
} else {
|
|
_get = function _get(target, property, receiver) {
|
|
var base = _superPropBase(target, property);
|
|
if (!base) return;
|
|
var desc = Object.getOwnPropertyDescriptor(base, property);
|
|
if (desc.get) {
|
|
return desc.get.call(receiver);
|
|
}
|
|
return desc.value;
|
|
};
|
|
}
|
|
return _get(target, property, receiver || target);
|
|
}
|
|
|
|
var PACKET_TYPES = Object.create(null); // no Map = no polyfill
|
|
PACKET_TYPES["open"] = "0";
|
|
PACKET_TYPES["close"] = "1";
|
|
PACKET_TYPES["ping"] = "2";
|
|
PACKET_TYPES["pong"] = "3";
|
|
PACKET_TYPES["message"] = "4";
|
|
PACKET_TYPES["upgrade"] = "5";
|
|
PACKET_TYPES["noop"] = "6";
|
|
var PACKET_TYPES_REVERSE = Object.create(null);
|
|
Object.keys(PACKET_TYPES).forEach(function (key) {
|
|
PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
|
|
});
|
|
var ERROR_PACKET = {
|
|
type: "error",
|
|
data: "parser error"
|
|
};
|
|
|
|
var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
|
|
var withNativeArrayBuffer$1 = typeof ArrayBuffer === "function";
|
|
// ArrayBuffer.isView method is not defined in IE10
|
|
var isView = function isView(obj) {
|
|
return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj && obj.buffer instanceof ArrayBuffer;
|
|
};
|
|
var encodePacket = function encodePacket(_ref, supportsBinary, callback) {
|
|
var type = _ref.type,
|
|
data = _ref.data;
|
|
if (withNativeBlob && data instanceof Blob) {
|
|
if (supportsBinary) {
|
|
return callback(data);
|
|
} else {
|
|
return encodeBlobAsBase64(data, callback);
|
|
}
|
|
} else if (withNativeArrayBuffer$1 && (data instanceof ArrayBuffer || isView(data))) {
|
|
if (supportsBinary) {
|
|
return callback(data);
|
|
} else {
|
|
return encodeBlobAsBase64(new Blob([data]), callback);
|
|
}
|
|
}
|
|
// plain string
|
|
return callback(PACKET_TYPES[type] + (data || ""));
|
|
};
|
|
var encodeBlobAsBase64 = function encodeBlobAsBase64(data, callback) {
|
|
var fileReader = new FileReader();
|
|
fileReader.onload = function () {
|
|
var content = fileReader.result.split(",")[1];
|
|
callback("b" + (content || ""));
|
|
};
|
|
return fileReader.readAsDataURL(data);
|
|
};
|
|
function toArray(data) {
|
|
if (data instanceof Uint8Array) {
|
|
return data;
|
|
} else if (data instanceof ArrayBuffer) {
|
|
return new Uint8Array(data);
|
|
} else {
|
|
return new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
|
|
}
|
|
}
|
|
var TEXT_ENCODER;
|
|
function encodePacketToBinary(packet, callback) {
|
|
if (withNativeBlob && packet.data instanceof Blob) {
|
|
return packet.data.arrayBuffer().then(toArray).then(callback);
|
|
} else if (withNativeArrayBuffer$1 && (packet.data instanceof ArrayBuffer || isView(packet.data))) {
|
|
return callback(toArray(packet.data));
|
|
}
|
|
encodePacket(packet, false, function (encoded) {
|
|
if (!TEXT_ENCODER) {
|
|
TEXT_ENCODER = new TextEncoder();
|
|
}
|
|
callback(TEXT_ENCODER.encode(encoded));
|
|
});
|
|
}
|
|
|
|
// imported from https://github.com/socketio/base64-arraybuffer
|
|
var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
|
|
// Use a lookup table to find the index.
|
|
var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
|
|
for (var i$1 = 0; i$1 < chars.length; i$1++) {
|
|
lookup[chars.charCodeAt(i$1)] = i$1;
|
|
}
|
|
var decode$1 = function decode(base64) {
|
|
var bufferLength = base64.length * 0.75,
|
|
len = base64.length,
|
|
i,
|
|
p = 0,
|
|
encoded1,
|
|
encoded2,
|
|
encoded3,
|
|
encoded4;
|
|
if (base64[base64.length - 1] === '=') {
|
|
bufferLength--;
|
|
if (base64[base64.length - 2] === '=') {
|
|
bufferLength--;
|
|
}
|
|
}
|
|
var arraybuffer = new ArrayBuffer(bufferLength),
|
|
bytes = new Uint8Array(arraybuffer);
|
|
for (i = 0; i < len; i += 4) {
|
|
encoded1 = lookup[base64.charCodeAt(i)];
|
|
encoded2 = lookup[base64.charCodeAt(i + 1)];
|
|
encoded3 = lookup[base64.charCodeAt(i + 2)];
|
|
encoded4 = lookup[base64.charCodeAt(i + 3)];
|
|
bytes[p++] = encoded1 << 2 | encoded2 >> 4;
|
|
bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;
|
|
bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63;
|
|
}
|
|
return arraybuffer;
|
|
};
|
|
|
|
var withNativeArrayBuffer = typeof ArrayBuffer === "function";
|
|
var decodePacket = function decodePacket(encodedPacket, binaryType) {
|
|
if (typeof encodedPacket !== "string") {
|
|
return {
|
|
type: "message",
|
|
data: mapBinary(encodedPacket, binaryType)
|
|
};
|
|
}
|
|
var type = encodedPacket.charAt(0);
|
|
if (type === "b") {
|
|
return {
|
|
type: "message",
|
|
data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
|
|
};
|
|
}
|
|
var packetType = PACKET_TYPES_REVERSE[type];
|
|
if (!packetType) {
|
|
return ERROR_PACKET;
|
|
}
|
|
return encodedPacket.length > 1 ? {
|
|
type: PACKET_TYPES_REVERSE[type],
|
|
data: encodedPacket.substring(1)
|
|
} : {
|
|
type: PACKET_TYPES_REVERSE[type]
|
|
};
|
|
};
|
|
var decodeBase64Packet = function decodeBase64Packet(data, binaryType) {
|
|
if (withNativeArrayBuffer) {
|
|
var decoded = decode$1(data);
|
|
return mapBinary(decoded, binaryType);
|
|
} else {
|
|
return {
|
|
base64: true,
|
|
data: data
|
|
}; // fallback for old browsers
|
|
}
|
|
};
|
|
|
|
var mapBinary = function mapBinary(data, binaryType) {
|
|
switch (binaryType) {
|
|
case "blob":
|
|
if (data instanceof Blob) {
|
|
// from WebSocket + binaryType "blob"
|
|
return data;
|
|
} else {
|
|
// from HTTP long-polling or WebTransport
|
|
return new Blob([data]);
|
|
}
|
|
case "arraybuffer":
|
|
default:
|
|
if (data instanceof ArrayBuffer) {
|
|
// from HTTP long-polling (base64) or WebSocket + binaryType "arraybuffer"
|
|
return data;
|
|
} else {
|
|
// from WebTransport (Uint8Array)
|
|
return data.buffer;
|
|
}
|
|
}
|
|
};
|
|
|
|
var SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
|
|
var encodePayload = function encodePayload(packets, callback) {
|
|
// some packets may be added to the array while encoding, so the initial length must be saved
|
|
var length = packets.length;
|
|
var encodedPackets = new Array(length);
|
|
var count = 0;
|
|
packets.forEach(function (packet, i) {
|
|
// force base64 encoding for binary packets
|
|
encodePacket(packet, false, function (encodedPacket) {
|
|
encodedPackets[i] = encodedPacket;
|
|
if (++count === length) {
|
|
callback(encodedPackets.join(SEPARATOR));
|
|
}
|
|
});
|
|
});
|
|
};
|
|
var decodePayload = function decodePayload(encodedPayload, binaryType) {
|
|
var encodedPackets = encodedPayload.split(SEPARATOR);
|
|
var packets = [];
|
|
for (var i = 0; i < encodedPackets.length; i++) {
|
|
var decodedPacket = decodePacket(encodedPackets[i], binaryType);
|
|
packets.push(decodedPacket);
|
|
if (decodedPacket.type === "error") {
|
|
break;
|
|
}
|
|
}
|
|
return packets;
|
|
};
|
|
function createPacketEncoderStream() {
|
|
return new TransformStream({
|
|
transform: function transform(packet, controller) {
|
|
encodePacketToBinary(packet, function (encodedPacket) {
|
|
var payloadLength = encodedPacket.length;
|
|
var header;
|
|
// inspired by the WebSocket format: https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_servers#decoding_payload_length
|
|
if (payloadLength < 126) {
|
|
header = new Uint8Array(1);
|
|
new DataView(header.buffer).setUint8(0, payloadLength);
|
|
} else if (payloadLength < 65536) {
|
|
header = new Uint8Array(3);
|
|
var view = new DataView(header.buffer);
|
|
view.setUint8(0, 126);
|
|
view.setUint16(1, payloadLength);
|
|
} else {
|
|
header = new Uint8Array(9);
|
|
var _view = new DataView(header.buffer);
|
|
_view.setUint8(0, 127);
|
|
_view.setBigUint64(1, BigInt(payloadLength));
|
|
}
|
|
// first bit indicates whether the payload is plain text (0) or binary (1)
|
|
if (packet.data && typeof packet.data !== "string") {
|
|
header[0] |= 0x80;
|
|
}
|
|
controller.enqueue(header);
|
|
controller.enqueue(encodedPacket);
|
|
});
|
|
}
|
|
});
|
|
}
|
|
var TEXT_DECODER;
|
|
function totalLength(chunks) {
|
|
return chunks.reduce(function (acc, chunk) {
|
|
return acc + chunk.length;
|
|
}, 0);
|
|
}
|
|
function concatChunks(chunks, size) {
|
|
if (chunks[0].length === size) {
|
|
return chunks.shift();
|
|
}
|
|
var buffer = new Uint8Array(size);
|
|
var j = 0;
|
|
for (var i = 0; i < size; i++) {
|
|
buffer[i] = chunks[0][j++];
|
|
if (j === chunks[0].length) {
|
|
chunks.shift();
|
|
j = 0;
|
|
}
|
|
}
|
|
if (chunks.length && j < chunks[0].length) {
|
|
chunks[0] = chunks[0].slice(j);
|
|
}
|
|
return buffer;
|
|
}
|
|
function createPacketDecoderStream(maxPayload, binaryType) {
|
|
if (!TEXT_DECODER) {
|
|
TEXT_DECODER = new TextDecoder();
|
|
}
|
|
var chunks = [];
|
|
var state = 0 /* READ_HEADER */;
|
|
var expectedLength = -1;
|
|
var isBinary = false;
|
|
return new TransformStream({
|
|
transform: function transform(chunk, controller) {
|
|
chunks.push(chunk);
|
|
while (true) {
|
|
if (state === 0 /* READ_HEADER */) {
|
|
if (totalLength(chunks) < 1) {
|
|
break;
|
|
}
|
|
var header = concatChunks(chunks, 1);
|
|
isBinary = (header[0] & 0x80) === 0x80;
|
|
expectedLength = header[0] & 0x7f;
|
|
if (expectedLength < 126) {
|
|
state = 3 /* READ_PAYLOAD */;
|
|
} else if (expectedLength === 126) {
|
|
state = 1 /* READ_EXTENDED_LENGTH_16 */;
|
|
} else {
|
|
state = 2 /* READ_EXTENDED_LENGTH_64 */;
|
|
}
|
|
} else if (state === 1 /* READ_EXTENDED_LENGTH_16 */) {
|
|
if (totalLength(chunks) < 2) {
|
|
break;
|
|
}
|
|
var headerArray = concatChunks(chunks, 2);
|
|
expectedLength = new DataView(headerArray.buffer, headerArray.byteOffset, headerArray.length).getUint16(0);
|
|
state = 3 /* READ_PAYLOAD */;
|
|
} else if (state === 2 /* READ_EXTENDED_LENGTH_64 */) {
|
|
if (totalLength(chunks) < 8) {
|
|
break;
|
|
}
|
|
var _headerArray = concatChunks(chunks, 8);
|
|
var view = new DataView(_headerArray.buffer, _headerArray.byteOffset, _headerArray.length);
|
|
var n = view.getUint32(0);
|
|
if (n > Math.pow(2, 53 - 32) - 1) {
|
|
// the maximum safe integer in JavaScript is 2^53 - 1
|
|
controller.enqueue(ERROR_PACKET);
|
|
break;
|
|
}
|
|
expectedLength = n * Math.pow(2, 32) + view.getUint32(4);
|
|
state = 3 /* READ_PAYLOAD */;
|
|
} else {
|
|
if (totalLength(chunks) < expectedLength) {
|
|
break;
|
|
}
|
|
var data = concatChunks(chunks, expectedLength);
|
|
controller.enqueue(decodePacket(isBinary ? data : TEXT_DECODER.decode(data), binaryType));
|
|
state = 0 /* READ_HEADER */;
|
|
}
|
|
|
|
if (expectedLength === 0 || expectedLength > maxPayload) {
|
|
controller.enqueue(ERROR_PACKET);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
var protocol = 4;
|
|
|
|
/**
|
|
* Initialize a new `Emitter`.
|
|
*
|
|
* @api public
|
|
*/
|
|
|
|
function Emitter(obj) {
|
|
if (obj) return mixin(obj);
|
|
}
|
|
|
|
/**
|
|
* Mixin the emitter properties.
|
|
*
|
|
* @param {Object} obj
|
|
* @return {Object}
|
|
* @api private
|
|
*/
|
|
|
|
function mixin(obj) {
|
|
for (var key in Emitter.prototype) {
|
|
obj[key] = Emitter.prototype[key];
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
/**
|
|
* Listen on the given `event` with `fn`.
|
|
*
|
|
* @param {String} event
|
|
* @param {Function} fn
|
|
* @return {Emitter}
|
|
* @api public
|
|
*/
|
|
|
|
Emitter.prototype.on = Emitter.prototype.addEventListener = function (event, fn) {
|
|
this._callbacks = this._callbacks || {};
|
|
(this._callbacks['$' + event] = this._callbacks['$' + event] || []).push(fn);
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Adds an `event` listener that will be invoked a single
|
|
* time then automatically removed.
|
|
*
|
|
* @param {String} event
|
|
* @param {Function} fn
|
|
* @return {Emitter}
|
|
* @api public
|
|
*/
|
|
|
|
Emitter.prototype.once = function (event, fn) {
|
|
function on() {
|
|
this.off(event, on);
|
|
fn.apply(this, arguments);
|
|
}
|
|
on.fn = fn;
|
|
this.on(event, on);
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Remove the given callback for `event` or all
|
|
* registered callbacks.
|
|
*
|
|
* @param {String} event
|
|
* @param {Function} fn
|
|
* @return {Emitter}
|
|
* @api public
|
|
*/
|
|
|
|
Emitter.prototype.off = Emitter.prototype.removeListener = Emitter.prototype.removeAllListeners = Emitter.prototype.removeEventListener = function (event, fn) {
|
|
this._callbacks = this._callbacks || {};
|
|
|
|
// all
|
|
if (0 == arguments.length) {
|
|
this._callbacks = {};
|
|
return this;
|
|
}
|
|
|
|
// specific event
|
|
var callbacks = this._callbacks['$' + event];
|
|
if (!callbacks) return this;
|
|
|
|
// remove all handlers
|
|
if (1 == arguments.length) {
|
|
delete this._callbacks['$' + event];
|
|
return this;
|
|
}
|
|
|
|
// remove specific handler
|
|
var cb;
|
|
for (var i = 0; i < callbacks.length; i++) {
|
|
cb = callbacks[i];
|
|
if (cb === fn || cb.fn === fn) {
|
|
callbacks.splice(i, 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Remove event specific arrays for event types that no
|
|
// one is subscribed for to avoid memory leak.
|
|
if (callbacks.length === 0) {
|
|
delete this._callbacks['$' + event];
|
|
}
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Emit `event` with the given args.
|
|
*
|
|
* @param {String} event
|
|
* @param {Mixed} ...
|
|
* @return {Emitter}
|
|
*/
|
|
|
|
Emitter.prototype.emit = function (event) {
|
|
this._callbacks = this._callbacks || {};
|
|
var args = new Array(arguments.length - 1),
|
|
callbacks = this._callbacks['$' + event];
|
|
for (var i = 1; i < arguments.length; i++) {
|
|
args[i - 1] = arguments[i];
|
|
}
|
|
if (callbacks) {
|
|
callbacks = callbacks.slice(0);
|
|
for (var i = 0, len = callbacks.length; i < len; ++i) {
|
|
callbacks[i].apply(this, args);
|
|
}
|
|
}
|
|
return this;
|
|
};
|
|
|
|
// alias used for reserved events (protected method)
|
|
Emitter.prototype.emitReserved = Emitter.prototype.emit;
|
|
|
|
/**
|
|
* Return array of callbacks for `event`.
|
|
*
|
|
* @param {String} event
|
|
* @return {Array}
|
|
* @api public
|
|
*/
|
|
|
|
Emitter.prototype.listeners = function (event) {
|
|
this._callbacks = this._callbacks || {};
|
|
return this._callbacks['$' + event] || [];
|
|
};
|
|
|
|
/**
|
|
* Check if this emitter has `event` handlers.
|
|
*
|
|
* @param {String} event
|
|
* @return {Boolean}
|
|
* @api public
|
|
*/
|
|
|
|
Emitter.prototype.hasListeners = function (event) {
|
|
return !!this.listeners(event).length;
|
|
};
|
|
|
|
var globalThisShim = function () {
|
|
if (typeof self !== "undefined") {
|
|
return self;
|
|
} else if (typeof window !== "undefined") {
|
|
return window;
|
|
} else {
|
|
return Function("return this")();
|
|
}
|
|
}();
|
|
|
|
function pick(obj) {
|
|
for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
|
|
attr[_key - 1] = arguments[_key];
|
|
}
|
|
return attr.reduce(function (acc, k) {
|
|
if (obj.hasOwnProperty(k)) {
|
|
acc[k] = obj[k];
|
|
}
|
|
return acc;
|
|
}, {});
|
|
}
|
|
// Keep a reference to the real timeout functions so they can be used when overridden
|
|
var NATIVE_SET_TIMEOUT = globalThisShim.setTimeout;
|
|
var NATIVE_CLEAR_TIMEOUT = globalThisShim.clearTimeout;
|
|
function installTimerFunctions(obj, opts) {
|
|
if (opts.useNativeTimers) {
|
|
obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThisShim);
|
|
obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThisShim);
|
|
} else {
|
|
obj.setTimeoutFn = globalThisShim.setTimeout.bind(globalThisShim);
|
|
obj.clearTimeoutFn = globalThisShim.clearTimeout.bind(globalThisShim);
|
|
}
|
|
}
|
|
// base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
|
|
var BASE64_OVERHEAD = 1.33;
|
|
// we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
|
|
function byteLength(obj) {
|
|
if (typeof obj === "string") {
|
|
return utf8Length(obj);
|
|
}
|
|
// arraybuffer or blob
|
|
return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD);
|
|
}
|
|
function utf8Length(str) {
|
|
var c = 0,
|
|
length = 0;
|
|
for (var i = 0, l = str.length; i < l; i++) {
|
|
c = str.charCodeAt(i);
|
|
if (c < 0x80) {
|
|
length += 1;
|
|
} else if (c < 0x800) {
|
|
length += 2;
|
|
} else if (c < 0xd800 || c >= 0xe000) {
|
|
length += 3;
|
|
} else {
|
|
i++;
|
|
length += 4;
|
|
}
|
|
}
|
|
return length;
|
|
}
|
|
|
|
// imported from https://github.com/galkn/querystring
|
|
/**
|
|
* Compiles a querystring
|
|
* Returns string representation of the object
|
|
*
|
|
* @param {Object}
|
|
* @api private
|
|
*/
|
|
function encode$1(obj) {
|
|
var str = '';
|
|
for (var i in obj) {
|
|
if (obj.hasOwnProperty(i)) {
|
|
if (str.length) str += '&';
|
|
str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
|
|
}
|
|
}
|
|
return str;
|
|
}
|
|
/**
|
|
* Parses a simple querystring into an object
|
|
*
|
|
* @param {String} qs
|
|
* @api private
|
|
*/
|
|
function decode(qs) {
|
|
var qry = {};
|
|
var pairs = qs.split('&');
|
|
for (var i = 0, l = pairs.length; i < l; i++) {
|
|
var pair = pairs[i].split('=');
|
|
qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
|
|
}
|
|
return qry;
|
|
}
|
|
|
|
var TransportError = /*#__PURE__*/function (_Error) {
|
|
_inherits(TransportError, _Error);
|
|
var _super = _createSuper(TransportError);
|
|
function TransportError(reason, description, context) {
|
|
var _this;
|
|
_classCallCheck(this, TransportError);
|
|
_this = _super.call(this, reason);
|
|
_this.description = description;
|
|
_this.context = context;
|
|
_this.type = "TransportError";
|
|
return _this;
|
|
}
|
|
return TransportError;
|
|
}( /*#__PURE__*/_wrapNativeSuper(Error));
|
|
var Transport = /*#__PURE__*/function (_Emitter) {
|
|
_inherits(Transport, _Emitter);
|
|
var _super2 = _createSuper(Transport);
|
|
/**
|
|
* Transport abstract constructor.
|
|
*
|
|
* @param {Object} opts - options
|
|
* @protected
|
|
*/
|
|
function Transport(opts) {
|
|
var _this2;
|
|
_classCallCheck(this, Transport);
|
|
_this2 = _super2.call(this);
|
|
_this2.writable = false;
|
|
installTimerFunctions(_assertThisInitialized(_this2), opts);
|
|
_this2.opts = opts;
|
|
_this2.query = opts.query;
|
|
_this2.socket = opts.socket;
|
|
return _this2;
|
|
}
|
|
/**
|
|
* Emits an error.
|
|
*
|
|
* @param {String} reason
|
|
* @param description
|
|
* @param context - the error context
|
|
* @return {Transport} for chaining
|
|
* @protected
|
|
*/
|
|
_createClass(Transport, [{
|
|
key: "onError",
|
|
value: function onError(reason, description, context) {
|
|
_get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "error", new TransportError(reason, description, context));
|
|
return this;
|
|
}
|
|
/**
|
|
* Opens the transport.
|
|
*/
|
|
}, {
|
|
key: "open",
|
|
value: function open() {
|
|
this.readyState = "opening";
|
|
this.doOpen();
|
|
return this;
|
|
}
|
|
/**
|
|
* Closes the transport.
|
|
*/
|
|
}, {
|
|
key: "close",
|
|
value: function close() {
|
|
if (this.readyState === "opening" || this.readyState === "open") {
|
|
this.doClose();
|
|
this.onClose();
|
|
}
|
|
return this;
|
|
}
|
|
/**
|
|
* Sends multiple packets.
|
|
*
|
|
* @param {Array} packets
|
|
*/
|
|
}, {
|
|
key: "send",
|
|
value: function send(packets) {
|
|
if (this.readyState === "open") {
|
|
this.write(packets);
|
|
}
|
|
}
|
|
/**
|
|
* Called upon open
|
|
*
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "onOpen",
|
|
value: function onOpen() {
|
|
this.readyState = "open";
|
|
this.writable = true;
|
|
_get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "open");
|
|
}
|
|
/**
|
|
* Called with data.
|
|
*
|
|
* @param {String} data
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "onData",
|
|
value: function onData(data) {
|
|
var packet = decodePacket(data, this.socket.binaryType);
|
|
this.onPacket(packet);
|
|
}
|
|
/**
|
|
* Called with a decoded packet.
|
|
*
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "onPacket",
|
|
value: function onPacket(packet) {
|
|
_get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "packet", packet);
|
|
}
|
|
/**
|
|
* Called upon close.
|
|
*
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "onClose",
|
|
value: function onClose(details) {
|
|
this.readyState = "closed";
|
|
_get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "close", details);
|
|
}
|
|
/**
|
|
* Pauses the transport, in order not to lose packets during an upgrade.
|
|
*
|
|
* @param onPause
|
|
*/
|
|
}, {
|
|
key: "pause",
|
|
value: function pause(onPause) {}
|
|
}, {
|
|
key: "createUri",
|
|
value: function createUri(schema) {
|
|
var query = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
|
return schema + "://" + this._hostname() + this._port() + this.opts.path + this._query(query);
|
|
}
|
|
}, {
|
|
key: "_hostname",
|
|
value: function _hostname() {
|
|
var hostname = this.opts.hostname;
|
|
return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
|
|
}
|
|
}, {
|
|
key: "_port",
|
|
value: function _port() {
|
|
if (this.opts.port && (this.opts.secure && Number(this.opts.port !== 443) || !this.opts.secure && Number(this.opts.port) !== 80)) {
|
|
return ":" + this.opts.port;
|
|
} else {
|
|
return "";
|
|
}
|
|
}
|
|
}, {
|
|
key: "_query",
|
|
value: function _query(query) {
|
|
var encodedQuery = encode$1(query);
|
|
return encodedQuery.length ? "?" + encodedQuery : "";
|
|
}
|
|
}]);
|
|
return Transport;
|
|
}(Emitter);
|
|
|
|
// imported from https://github.com/unshiftio/yeast
|
|
|
|
var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split(''),
|
|
length = 64,
|
|
map = {};
|
|
var seed = 0,
|
|
i = 0,
|
|
prev;
|
|
/**
|
|
* Return a string representing the specified number.
|
|
*
|
|
* @param {Number} num The number to convert.
|
|
* @returns {String} The string representation of the number.
|
|
* @api public
|
|
*/
|
|
function encode(num) {
|
|
var encoded = '';
|
|
do {
|
|
encoded = alphabet[num % length] + encoded;
|
|
num = Math.floor(num / length);
|
|
} while (num > 0);
|
|
return encoded;
|
|
}
|
|
/**
|
|
* Yeast: A tiny growing id generator.
|
|
*
|
|
* @returns {String} A unique id.
|
|
* @api public
|
|
*/
|
|
function yeast() {
|
|
var now = encode(+new Date());
|
|
if (now !== prev) return seed = 0, prev = now;
|
|
return now + '.' + encode(seed++);
|
|
}
|
|
//
|
|
// Map each character to its index.
|
|
//
|
|
for (; i < length; i++) {
|
|
map[alphabet[i]] = i;
|
|
}
|
|
|
|
// imported from https://github.com/component/has-cors
|
|
var value = false;
|
|
try {
|
|
value = typeof XMLHttpRequest !== 'undefined' && 'withCredentials' in new XMLHttpRequest();
|
|
} catch (err) {
|
|
// if XMLHttp support is disabled in IE then it will throw
|
|
// when trying to create
|
|
}
|
|
var hasCORS = value;
|
|
|
|
// browser shim for xmlhttprequest module
|
|
function XHR(opts) {
|
|
var xdomain = opts.xdomain;
|
|
// XMLHttpRequest can be disabled on IE
|
|
try {
|
|
if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
|
|
return new XMLHttpRequest();
|
|
}
|
|
} catch (e) {}
|
|
if (!xdomain) {
|
|
try {
|
|
return new globalThisShim[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
|
|
} catch (e) {}
|
|
}
|
|
}
|
|
function createCookieJar() {}
|
|
|
|
function empty() {}
|
|
var hasXHR2 = function () {
|
|
var xhr = new XHR({
|
|
xdomain: false
|
|
});
|
|
return null != xhr.responseType;
|
|
}();
|
|
var Polling = /*#__PURE__*/function (_Transport) {
|
|
_inherits(Polling, _Transport);
|
|
var _super = _createSuper(Polling);
|
|
/**
|
|
* XHR Polling constructor.
|
|
*
|
|
* @param {Object} opts
|
|
* @package
|
|
*/
|
|
function Polling(opts) {
|
|
var _this;
|
|
_classCallCheck(this, Polling);
|
|
_this = _super.call(this, opts);
|
|
_this.polling = false;
|
|
if (typeof location !== "undefined") {
|
|
var isSSL = "https:" === location.protocol;
|
|
var port = location.port;
|
|
// some user agents have empty `location.port`
|
|
if (!port) {
|
|
port = isSSL ? "443" : "80";
|
|
}
|
|
_this.xd = typeof location !== "undefined" && opts.hostname !== location.hostname || port !== opts.port;
|
|
}
|
|
/**
|
|
* XHR supports binary
|
|
*/
|
|
var forceBase64 = opts && opts.forceBase64;
|
|
_this.supportsBinary = hasXHR2 && !forceBase64;
|
|
if (_this.opts.withCredentials) {
|
|
_this.cookieJar = createCookieJar();
|
|
}
|
|
return _this;
|
|
}
|
|
_createClass(Polling, [{
|
|
key: "doOpen",
|
|
/**
|
|
* Opens the socket (triggers polling). We write a PING message to determine
|
|
* when the transport is open.
|
|
*
|
|
* @protected
|
|
*/
|
|
value: function doOpen() {
|
|
this.poll();
|
|
}
|
|
/**
|
|
* Pauses polling.
|
|
*
|
|
* @param {Function} onPause - callback upon buffers are flushed and transport is paused
|
|
* @package
|
|
*/
|
|
}, {
|
|
key: "pause",
|
|
value: function pause(onPause) {
|
|
var _this2 = this;
|
|
this.readyState = "pausing";
|
|
var pause = function pause() {
|
|
_this2.readyState = "paused";
|
|
onPause();
|
|
};
|
|
if (this.polling || !this.writable) {
|
|
var total = 0;
|
|
if (this.polling) {
|
|
total++;
|
|
this.once("pollComplete", function () {
|
|
--total || pause();
|
|
});
|
|
}
|
|
if (!this.writable) {
|
|
total++;
|
|
this.once("drain", function () {
|
|
--total || pause();
|
|
});
|
|
}
|
|
} else {
|
|
pause();
|
|
}
|
|
}
|
|
/**
|
|
* Starts polling cycle.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "poll",
|
|
value: function poll() {
|
|
this.polling = true;
|
|
this.doPoll();
|
|
this.emitReserved("poll");
|
|
}
|
|
/**
|
|
* Overloads onData to detect payloads.
|
|
*
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "onData",
|
|
value: function onData(data) {
|
|
var _this3 = this;
|
|
var callback = function callback(packet) {
|
|
// if its the first message we consider the transport open
|
|
if ("opening" === _this3.readyState && packet.type === "open") {
|
|
_this3.onOpen();
|
|
}
|
|
// if its a close packet, we close the ongoing requests
|
|
if ("close" === packet.type) {
|
|
_this3.onClose({
|
|
description: "transport closed by the server"
|
|
});
|
|
return false;
|
|
}
|
|
// otherwise bypass onData and handle the message
|
|
_this3.onPacket(packet);
|
|
};
|
|
// decode payload
|
|
decodePayload(data, this.socket.binaryType).forEach(callback);
|
|
// if an event did not trigger closing
|
|
if ("closed" !== this.readyState) {
|
|
// if we got data we're not polling
|
|
this.polling = false;
|
|
this.emitReserved("pollComplete");
|
|
if ("open" === this.readyState) {
|
|
this.poll();
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* For polling, send a close packet.
|
|
*
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "doClose",
|
|
value: function doClose() {
|
|
var _this4 = this;
|
|
var close = function close() {
|
|
_this4.write([{
|
|
type: "close"
|
|
}]);
|
|
};
|
|
if ("open" === this.readyState) {
|
|
close();
|
|
} else {
|
|
// in case we're trying to close while
|
|
// handshaking is in progress (GH-164)
|
|
this.once("open", close);
|
|
}
|
|
}
|
|
/**
|
|
* Writes a packets payload.
|
|
*
|
|
* @param {Array} packets - data packets
|
|
* @protected
|
|
*/
|
|
}, {
|
|
key: "write",
|
|
value: function write(packets) {
|
|
var _this5 = this;
|
|
this.writable = false;
|
|
encodePayload(packets, function (data) {
|
|
_this5.doWrite(data, function () {
|
|
_this5.writable = true;
|
|
_this5.emitReserved("drain");
|
|
});
|
|
});
|
|
}
|
|
/**
|
|
* Generates uri for connection.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "uri",
|
|
value: function uri() {
|
|
var schema = this.opts.secure ? "https" : "http";
|
|
var query = this.query || {};
|
|
// cache busting is forced
|
|
if (false !== this.opts.timestampRequests) {
|
|
query[this.opts.timestampParam] = yeast();
|
|
}
|
|
if (!this.supportsBinary && !query.sid) {
|
|
query.b64 = 1;
|
|
}
|
|
return this.createUri(schema, query);
|
|
}
|
|
/**
|
|
* Creates a request.
|
|
*
|
|
* @param {String} method
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "request",
|
|
value: function request() {
|
|
var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
|
|
_extends(opts, {
|
|
xd: this.xd,
|
|
cookieJar: this.cookieJar
|
|
}, this.opts);
|
|
return new Request(this.uri(), opts);
|
|
}
|
|
/**
|
|
* Sends data.
|
|
*
|
|
* @param {String} data to send.
|
|
* @param {Function} called upon flush.
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "doWrite",
|
|
value: function doWrite(data, fn) {
|
|
var _this6 = this;
|
|
var req = this.request({
|
|
method: "POST",
|
|
data: data
|
|
});
|
|
req.on("success", fn);
|
|
req.on("error", function (xhrStatus, context) {
|
|
_this6.onError("xhr post error", xhrStatus, context);
|
|
});
|
|
}
|
|
/**
|
|
* Starts a poll cycle.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "doPoll",
|
|
value: function doPoll() {
|
|
var _this7 = this;
|
|
var req = this.request();
|
|
req.on("data", this.onData.bind(this));
|
|
req.on("error", function (xhrStatus, context) {
|
|
_this7.onError("xhr poll error", xhrStatus, context);
|
|
});
|
|
this.pollXhr = req;
|
|
}
|
|
}, {
|
|
key: "name",
|
|
get: function get() {
|
|
return "polling";
|
|
}
|
|
}]);
|
|
return Polling;
|
|
}(Transport);
|
|
var Request = /*#__PURE__*/function (_Emitter) {
|
|
_inherits(Request, _Emitter);
|
|
var _super2 = _createSuper(Request);
|
|
/**
|
|
* Request constructor
|
|
*
|
|
* @param {Object} options
|
|
* @package
|
|
*/
|
|
function Request(uri, opts) {
|
|
var _this8;
|
|
_classCallCheck(this, Request);
|
|
_this8 = _super2.call(this);
|
|
installTimerFunctions(_assertThisInitialized(_this8), opts);
|
|
_this8.opts = opts;
|
|
_this8.method = opts.method || "GET";
|
|
_this8.uri = uri;
|
|
_this8.data = undefined !== opts.data ? opts.data : null;
|
|
_this8.create();
|
|
return _this8;
|
|
}
|
|
/**
|
|
* Creates the XHR object and sends the request.
|
|
*
|
|
* @private
|
|
*/
|
|
_createClass(Request, [{
|
|
key: "create",
|
|
value: function create() {
|
|
var _this9 = this;
|
|
var _a;
|
|
var opts = pick(this.opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
|
|
opts.xdomain = !!this.opts.xd;
|
|
var xhr = this.xhr = new XHR(opts);
|
|
try {
|
|
xhr.open(this.method, this.uri, true);
|
|
try {
|
|
if (this.opts.extraHeaders) {
|
|
xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
|
|
for (var i in this.opts.extraHeaders) {
|
|
if (this.opts.extraHeaders.hasOwnProperty(i)) {
|
|
xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
|
|
}
|
|
}
|
|
}
|
|
} catch (e) {}
|
|
if ("POST" === this.method) {
|
|
try {
|
|
xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
|
|
} catch (e) {}
|
|
}
|
|
try {
|
|
xhr.setRequestHeader("Accept", "*/*");
|
|
} catch (e) {}
|
|
(_a = this.opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
|
|
// ie6 check
|
|
if ("withCredentials" in xhr) {
|
|
xhr.withCredentials = this.opts.withCredentials;
|
|
}
|
|
if (this.opts.requestTimeout) {
|
|
xhr.timeout = this.opts.requestTimeout;
|
|
}
|
|
xhr.onreadystatechange = function () {
|
|
var _a;
|
|
if (xhr.readyState === 3) {
|
|
(_a = _this9.opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(xhr);
|
|
}
|
|
if (4 !== xhr.readyState) return;
|
|
if (200 === xhr.status || 1223 === xhr.status) {
|
|
_this9.onLoad();
|
|
} else {
|
|
// make sure the `error` event handler that's user-set
|
|
// does not throw in the same tick and gets caught here
|
|
_this9.setTimeoutFn(function () {
|
|
_this9.onError(typeof xhr.status === "number" ? xhr.status : 0);
|
|
}, 0);
|
|
}
|
|
};
|
|
xhr.send(this.data);
|
|
} catch (e) {
|
|
// Need to defer since .create() is called directly from the constructor
|
|
// and thus the 'error' event can only be only bound *after* this exception
|
|
// occurs. Therefore, also, we cannot throw here at all.
|
|
this.setTimeoutFn(function () {
|
|
_this9.onError(e);
|
|
}, 0);
|
|
return;
|
|
}
|
|
if (typeof document !== "undefined") {
|
|
this.index = Request.requestsCount++;
|
|
Request.requests[this.index] = this;
|
|
}
|
|
}
|
|
/**
|
|
* Called upon error.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onError",
|
|
value: function onError(err) {
|
|
this.emitReserved("error", err, this.xhr);
|
|
this.cleanup(true);
|
|
}
|
|
/**
|
|
* Cleans up house.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "cleanup",
|
|
value: function cleanup(fromError) {
|
|
if ("undefined" === typeof this.xhr || null === this.xhr) {
|
|
return;
|
|
}
|
|
this.xhr.onreadystatechange = empty;
|
|
if (fromError) {
|
|
try {
|
|
this.xhr.abort();
|
|
} catch (e) {}
|
|
}
|
|
if (typeof document !== "undefined") {
|
|
delete Request.requests[this.index];
|
|
}
|
|
this.xhr = null;
|
|
}
|
|
/**
|
|
* Called upon load.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onLoad",
|
|
value: function onLoad() {
|
|
var data = this.xhr.responseText;
|
|
if (data !== null) {
|
|
this.emitReserved("data", data);
|
|
this.emitReserved("success");
|
|
this.cleanup();
|
|
}
|
|
}
|
|
/**
|
|
* Aborts the request.
|
|
*
|
|
* @package
|
|
*/
|
|
}, {
|
|
key: "abort",
|
|
value: function abort() {
|
|
this.cleanup();
|
|
}
|
|
}]);
|
|
return Request;
|
|
}(Emitter);
|
|
Request.requestsCount = 0;
|
|
Request.requests = {};
|
|
/**
|
|
* Aborts pending requests when unloading the window. This is needed to prevent
|
|
* memory leaks (e.g. when using IE) and to ensure that no spurious error is
|
|
* emitted.
|
|
*/
|
|
if (typeof document !== "undefined") {
|
|
// @ts-ignore
|
|
if (typeof attachEvent === "function") {
|
|
// @ts-ignore
|
|
attachEvent("onunload", unloadHandler);
|
|
} else if (typeof addEventListener === "function") {
|
|
var terminationEvent = "onpagehide" in globalThisShim ? "pagehide" : "unload";
|
|
addEventListener(terminationEvent, unloadHandler, false);
|
|
}
|
|
}
|
|
function unloadHandler() {
|
|
for (var i in Request.requests) {
|
|
if (Request.requests.hasOwnProperty(i)) {
|
|
Request.requests[i].abort();
|
|
}
|
|
}
|
|
}
|
|
|
|
var nextTick = function () {
|
|
var isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
|
|
if (isPromiseAvailable) {
|
|
return function (cb) {
|
|
return Promise.resolve().then(cb);
|
|
};
|
|
} else {
|
|
return function (cb, setTimeoutFn) {
|
|
return setTimeoutFn(cb, 0);
|
|
};
|
|
}
|
|
}();
|
|
var WebSocket = globalThisShim.WebSocket || globalThisShim.MozWebSocket;
|
|
var usingBrowserWebSocket = true;
|
|
var defaultBinaryType = "arraybuffer";
|
|
|
|
// detect ReactNative environment
|
|
var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
|
|
var WS = /*#__PURE__*/function (_Transport) {
|
|
_inherits(WS, _Transport);
|
|
var _super = _createSuper(WS);
|
|
/**
|
|
* WebSocket transport constructor.
|
|
*
|
|
* @param {Object} opts - connection options
|
|
* @protected
|
|
*/
|
|
function WS(opts) {
|
|
var _this;
|
|
_classCallCheck(this, WS);
|
|
_this = _super.call(this, opts);
|
|
_this.supportsBinary = !opts.forceBase64;
|
|
return _this;
|
|
}
|
|
_createClass(WS, [{
|
|
key: "doOpen",
|
|
value: function doOpen() {
|
|
if (!this.check()) {
|
|
// let probe timeout
|
|
return;
|
|
}
|
|
var uri = this.uri();
|
|
var protocols = this.opts.protocols;
|
|
// React Native only supports the 'headers' option, and will print a warning if anything else is passed
|
|
var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
|
|
if (this.opts.extraHeaders) {
|
|
opts.headers = this.opts.extraHeaders;
|
|
}
|
|
try {
|
|
this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts);
|
|
} catch (err) {
|
|
return this.emitReserved("error", err);
|
|
}
|
|
this.ws.binaryType = this.socket.binaryType;
|
|
this.addEventListeners();
|
|
}
|
|
/**
|
|
* Adds event listeners to the socket
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "addEventListeners",
|
|
value: function addEventListeners() {
|
|
var _this2 = this;
|
|
this.ws.onopen = function () {
|
|
if (_this2.opts.autoUnref) {
|
|
_this2.ws._socket.unref();
|
|
}
|
|
_this2.onOpen();
|
|
};
|
|
this.ws.onclose = function (closeEvent) {
|
|
return _this2.onClose({
|
|
description: "websocket connection closed",
|
|
context: closeEvent
|
|
});
|
|
};
|
|
this.ws.onmessage = function (ev) {
|
|
return _this2.onData(ev.data);
|
|
};
|
|
this.ws.onerror = function (e) {
|
|
return _this2.onError("websocket error", e);
|
|
};
|
|
}
|
|
}, {
|
|
key: "write",
|
|
value: function write(packets) {
|
|
var _this3 = this;
|
|
this.writable = false;
|
|
// encodePacket efficient as it uses WS framing
|
|
// no need for encodePayload
|
|
var _loop = function _loop(i) {
|
|
var packet = packets[i];
|
|
var lastPacket = i === packets.length - 1;
|
|
encodePacket(packet, _this3.supportsBinary, function (data) {
|
|
// always create a new object (GH-437)
|
|
var opts = {};
|
|
// Sometimes the websocket has already been closed but the browser didn't
|
|
// have a chance of informing us about it yet, in that case send will
|
|
// throw an error
|
|
try {
|
|
if (usingBrowserWebSocket) {
|
|
// TypeError is thrown when passing the second argument on Safari
|
|
_this3.ws.send(data);
|
|
}
|
|
} catch (e) {}
|
|
if (lastPacket) {
|
|
// fake drain
|
|
// defer to next tick to allow Socket to clear writeBuffer
|
|
nextTick(function () {
|
|
_this3.writable = true;
|
|
_this3.emitReserved("drain");
|
|
}, _this3.setTimeoutFn);
|
|
}
|
|
});
|
|
};
|
|
for (var i = 0; i < packets.length; i++) {
|
|
_loop(i);
|
|
}
|
|
}
|
|
}, {
|
|
key: "doClose",
|
|
value: function doClose() {
|
|
if (typeof this.ws !== "undefined") {
|
|
this.ws.close();
|
|
this.ws = null;
|
|
}
|
|
}
|
|
/**
|
|
* Generates uri for connection.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "uri",
|
|
value: function uri() {
|
|
var schema = this.opts.secure ? "wss" : "ws";
|
|
var query = this.query || {};
|
|
// append timestamp to URI
|
|
if (this.opts.timestampRequests) {
|
|
query[this.opts.timestampParam] = yeast();
|
|
}
|
|
// communicate binary support capabilities
|
|
if (!this.supportsBinary) {
|
|
query.b64 = 1;
|
|
}
|
|
return this.createUri(schema, query);
|
|
}
|
|
/**
|
|
* Feature detection for WebSocket.
|
|
*
|
|
* @return {Boolean} whether this transport is available.
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "check",
|
|
value: function check() {
|
|
return !!WebSocket;
|
|
}
|
|
}, {
|
|
key: "name",
|
|
get: function get() {
|
|
return "websocket";
|
|
}
|
|
}]);
|
|
return WS;
|
|
}(Transport);
|
|
|
|
var WT = /*#__PURE__*/function (_Transport) {
|
|
_inherits(WT, _Transport);
|
|
var _super = _createSuper(WT);
|
|
function WT() {
|
|
_classCallCheck(this, WT);
|
|
return _super.apply(this, arguments);
|
|
}
|
|
_createClass(WT, [{
|
|
key: "doOpen",
|
|
value: function doOpen() {
|
|
var _this = this;
|
|
// @ts-ignore
|
|
if (typeof WebTransport !== "function") {
|
|
return;
|
|
}
|
|
// @ts-ignore
|
|
this.transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
|
|
this.transport.closed.then(function () {
|
|
_this.onClose();
|
|
})["catch"](function (err) {
|
|
_this.onError("webtransport error", err);
|
|
});
|
|
// note: we could have used async/await, but that would require some additional polyfills
|
|
this.transport.ready.then(function () {
|
|
_this.transport.createBidirectionalStream().then(function (stream) {
|
|
var decoderStream = createPacketDecoderStream(Number.MAX_SAFE_INTEGER, _this.socket.binaryType);
|
|
var reader = stream.readable.pipeThrough(decoderStream).getReader();
|
|
var encoderStream = createPacketEncoderStream();
|
|
encoderStream.readable.pipeTo(stream.writable);
|
|
_this.writer = encoderStream.writable.getWriter();
|
|
var read = function read() {
|
|
reader.read().then(function (_ref) {
|
|
var done = _ref.done,
|
|
value = _ref.value;
|
|
if (done) {
|
|
return;
|
|
}
|
|
_this.onPacket(value);
|
|
read();
|
|
})["catch"](function (err) {});
|
|
};
|
|
read();
|
|
var packet = {
|
|
type: "open"
|
|
};
|
|
if (_this.query.sid) {
|
|
packet.data = "{\"sid\":\"".concat(_this.query.sid, "\"}");
|
|
}
|
|
_this.writer.write(packet).then(function () {
|
|
return _this.onOpen();
|
|
});
|
|
});
|
|
});
|
|
}
|
|
}, {
|
|
key: "write",
|
|
value: function write(packets) {
|
|
var _this2 = this;
|
|
this.writable = false;
|
|
var _loop = function _loop(i) {
|
|
var packet = packets[i];
|
|
var lastPacket = i === packets.length - 1;
|
|
_this2.writer.write(packet).then(function () {
|
|
if (lastPacket) {
|
|
nextTick(function () {
|
|
_this2.writable = true;
|
|
_this2.emitReserved("drain");
|
|
}, _this2.setTimeoutFn);
|
|
}
|
|
});
|
|
};
|
|
for (var i = 0; i < packets.length; i++) {
|
|
_loop(i);
|
|
}
|
|
}
|
|
}, {
|
|
key: "doClose",
|
|
value: function doClose() {
|
|
var _a;
|
|
(_a = this.transport) === null || _a === void 0 ? void 0 : _a.close();
|
|
}
|
|
}, {
|
|
key: "name",
|
|
get: function get() {
|
|
return "webtransport";
|
|
}
|
|
}]);
|
|
return WT;
|
|
}(Transport);
|
|
|
|
var transports = {
|
|
websocket: WS,
|
|
webtransport: WT,
|
|
polling: Polling
|
|
};
|
|
|
|
// imported from https://github.com/galkn/parseuri
|
|
/**
|
|
* Parses a URI
|
|
*
|
|
* Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
|
|
*
|
|
* See:
|
|
* - https://developer.mozilla.org/en-US/docs/Web/API/URL
|
|
* - https://caniuse.com/url
|
|
* - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
|
|
*
|
|
* History of the parse() method:
|
|
* - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
|
|
* - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
|
|
* - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
|
|
*
|
|
* @author Steven Levithan <stevenlevithan.com> (MIT license)
|
|
* @api private
|
|
*/
|
|
var re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
|
|
var parts = ['source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'];
|
|
function parse(str) {
|
|
if (str.length > 2000) {
|
|
throw "URI too long";
|
|
}
|
|
var src = str,
|
|
b = str.indexOf('['),
|
|
e = str.indexOf(']');
|
|
if (b != -1 && e != -1) {
|
|
str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
|
|
}
|
|
var m = re.exec(str || ''),
|
|
uri = {},
|
|
i = 14;
|
|
while (i--) {
|
|
uri[parts[i]] = m[i] || '';
|
|
}
|
|
if (b != -1 && e != -1) {
|
|
uri.source = src;
|
|
uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
|
|
uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
|
|
uri.ipv6uri = true;
|
|
}
|
|
uri.pathNames = pathNames(uri, uri['path']);
|
|
uri.queryKey = queryKey(uri, uri['query']);
|
|
return uri;
|
|
}
|
|
function pathNames(obj, path) {
|
|
var regx = /\/{2,9}/g,
|
|
names = path.replace(regx, "/").split("/");
|
|
if (path.slice(0, 1) == '/' || path.length === 0) {
|
|
names.splice(0, 1);
|
|
}
|
|
if (path.slice(-1) == '/') {
|
|
names.splice(names.length - 1, 1);
|
|
}
|
|
return names;
|
|
}
|
|
function queryKey(uri, query) {
|
|
var data = {};
|
|
query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
|
|
if ($1) {
|
|
data[$1] = $2;
|
|
}
|
|
});
|
|
return data;
|
|
}
|
|
|
|
var Socket = /*#__PURE__*/function (_Emitter) {
|
|
_inherits(Socket, _Emitter);
|
|
var _super = _createSuper(Socket);
|
|
/**
|
|
* Socket constructor.
|
|
*
|
|
* @param {String|Object} uri - uri or options
|
|
* @param {Object} opts - options
|
|
*/
|
|
function Socket(uri) {
|
|
var _this;
|
|
var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
|
_classCallCheck(this, Socket);
|
|
_this = _super.call(this);
|
|
_this.binaryType = defaultBinaryType;
|
|
_this.writeBuffer = [];
|
|
if (uri && "object" === _typeof(uri)) {
|
|
opts = uri;
|
|
uri = null;
|
|
}
|
|
if (uri) {
|
|
uri = parse(uri);
|
|
opts.hostname = uri.host;
|
|
opts.secure = uri.protocol === "https" || uri.protocol === "wss";
|
|
opts.port = uri.port;
|
|
if (uri.query) opts.query = uri.query;
|
|
} else if (opts.host) {
|
|
opts.hostname = parse(opts.host).host;
|
|
}
|
|
installTimerFunctions(_assertThisInitialized(_this), opts);
|
|
_this.secure = null != opts.secure ? opts.secure : typeof location !== "undefined" && "https:" === location.protocol;
|
|
if (opts.hostname && !opts.port) {
|
|
// if no port is specified manually, use the protocol default
|
|
opts.port = _this.secure ? "443" : "80";
|
|
}
|
|
_this.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost");
|
|
_this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? "443" : "80");
|
|
_this.transports = opts.transports || ["polling", "websocket", "webtransport"];
|
|
_this.writeBuffer = [];
|
|
_this.prevBufferLen = 0;
|
|
_this.opts = _extends({
|
|
path: "/engine.io",
|
|
agent: false,
|
|
withCredentials: false,
|
|
upgrade: true,
|
|
timestampParam: "t",
|
|
rememberUpgrade: false,
|
|
addTrailingSlash: true,
|
|
rejectUnauthorized: true,
|
|
perMessageDeflate: {
|
|
threshold: 1024
|
|
},
|
|
transportOptions: {},
|
|
closeOnBeforeunload: false
|
|
}, opts);
|
|
_this.opts.path = _this.opts.path.replace(/\/$/, "") + (_this.opts.addTrailingSlash ? "/" : "");
|
|
if (typeof _this.opts.query === "string") {
|
|
_this.opts.query = decode(_this.opts.query);
|
|
}
|
|
// set on handshake
|
|
_this.id = null;
|
|
_this.upgrades = null;
|
|
_this.pingInterval = null;
|
|
_this.pingTimeout = null;
|
|
// set on heartbeat
|
|
_this.pingTimeoutTimer = null;
|
|
if (typeof addEventListener === "function") {
|
|
if (_this.opts.closeOnBeforeunload) {
|
|
// Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
|
|
// ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
|
|
// closed/reloaded)
|
|
_this.beforeunloadEventListener = function () {
|
|
if (_this.transport) {
|
|
// silently close the transport
|
|
_this.transport.removeAllListeners();
|
|
_this.transport.close();
|
|
}
|
|
};
|
|
addEventListener("beforeunload", _this.beforeunloadEventListener, false);
|
|
}
|
|
if (_this.hostname !== "localhost") {
|
|
_this.offlineEventListener = function () {
|
|
_this.onClose("transport close", {
|
|
description: "network connection lost"
|
|
});
|
|
};
|
|
addEventListener("offline", _this.offlineEventListener, false);
|
|
}
|
|
}
|
|
_this.open();
|
|
return _this;
|
|
}
|
|
/**
|
|
* Creates transport of the given type.
|
|
*
|
|
* @param {String} name - transport name
|
|
* @return {Transport}
|
|
* @private
|
|
*/
|
|
_createClass(Socket, [{
|
|
key: "createTransport",
|
|
value: function createTransport(name) {
|
|
var query = _extends({}, this.opts.query);
|
|
// append engine.io protocol identifier
|
|
query.EIO = protocol;
|
|
// transport name
|
|
query.transport = name;
|
|
// session id if we already have one
|
|
if (this.id) query.sid = this.id;
|
|
var opts = _extends({}, this.opts, {
|
|
query: query,
|
|
socket: this,
|
|
hostname: this.hostname,
|
|
secure: this.secure,
|
|
port: this.port
|
|
}, this.opts.transportOptions[name]);
|
|
return new transports[name](opts);
|
|
}
|
|
/**
|
|
* Initializes transport to use and starts probe.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "open",
|
|
value: function open() {
|
|
var _this2 = this;
|
|
var transport;
|
|
if (this.opts.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1) {
|
|
transport = "websocket";
|
|
} else if (0 === this.transports.length) {
|
|
// Emit error on next tick so it can be listened to
|
|
this.setTimeoutFn(function () {
|
|
_this2.emitReserved("error", "No transports available");
|
|
}, 0);
|
|
return;
|
|
} else {
|
|
transport = this.transports[0];
|
|
}
|
|
this.readyState = "opening";
|
|
// Retry with the next transport if the transport is disabled (jsonp: false)
|
|
try {
|
|
transport = this.createTransport(transport);
|
|
} catch (e) {
|
|
this.transports.shift();
|
|
this.open();
|
|
return;
|
|
}
|
|
transport.open();
|
|
this.setTransport(transport);
|
|
}
|
|
/**
|
|
* Sets the current transport. Disables the existing one (if any).
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "setTransport",
|
|
value: function setTransport(transport) {
|
|
var _this3 = this;
|
|
if (this.transport) {
|
|
this.transport.removeAllListeners();
|
|
}
|
|
// set up transport
|
|
this.transport = transport;
|
|
// set up transport listeners
|
|
transport.on("drain", this.onDrain.bind(this)).on("packet", this.onPacket.bind(this)).on("error", this.onError.bind(this)).on("close", function (reason) {
|
|
return _this3.onClose("transport close", reason);
|
|
});
|
|
}
|
|
/**
|
|
* Probes a transport.
|
|
*
|
|
* @param {String} name - transport name
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "probe",
|
|
value: function probe(name) {
|
|
var _this4 = this;
|
|
var transport = this.createTransport(name);
|
|
var failed = false;
|
|
Socket.priorWebsocketSuccess = false;
|
|
var onTransportOpen = function onTransportOpen() {
|
|
if (failed) return;
|
|
transport.send([{
|
|
type: "ping",
|
|
data: "probe"
|
|
}]);
|
|
transport.once("packet", function (msg) {
|
|
if (failed) return;
|
|
if ("pong" === msg.type && "probe" === msg.data) {
|
|
_this4.upgrading = true;
|
|
_this4.emitReserved("upgrading", transport);
|
|
if (!transport) return;
|
|
Socket.priorWebsocketSuccess = "websocket" === transport.name;
|
|
_this4.transport.pause(function () {
|
|
if (failed) return;
|
|
if ("closed" === _this4.readyState) return;
|
|
cleanup();
|
|
_this4.setTransport(transport);
|
|
transport.send([{
|
|
type: "upgrade"
|
|
}]);
|
|
_this4.emitReserved("upgrade", transport);
|
|
transport = null;
|
|
_this4.upgrading = false;
|
|
_this4.flush();
|
|
});
|
|
} else {
|
|
var err = new Error("probe error");
|
|
// @ts-ignore
|
|
err.transport = transport.name;
|
|
_this4.emitReserved("upgradeError", err);
|
|
}
|
|
});
|
|
};
|
|
function freezeTransport() {
|
|
if (failed) return;
|
|
// Any callback called by transport should be ignored since now
|
|
failed = true;
|
|
cleanup();
|
|
transport.close();
|
|
transport = null;
|
|
}
|
|
// Handle any error that happens while probing
|
|
var onerror = function onerror(err) {
|
|
var error = new Error("probe error: " + err);
|
|
// @ts-ignore
|
|
error.transport = transport.name;
|
|
freezeTransport();
|
|
_this4.emitReserved("upgradeError", error);
|
|
};
|
|
function onTransportClose() {
|
|
onerror("transport closed");
|
|
}
|
|
// When the socket is closed while we're probing
|
|
function onclose() {
|
|
onerror("socket closed");
|
|
}
|
|
// When the socket is upgraded while we're probing
|
|
function onupgrade(to) {
|
|
if (transport && to.name !== transport.name) {
|
|
freezeTransport();
|
|
}
|
|
}
|
|
// Remove all listeners on the transport and on self
|
|
var cleanup = function cleanup() {
|
|
transport.removeListener("open", onTransportOpen);
|
|
transport.removeListener("error", onerror);
|
|
transport.removeListener("close", onTransportClose);
|
|
_this4.off("close", onclose);
|
|
_this4.off("upgrading", onupgrade);
|
|
};
|
|
transport.once("open", onTransportOpen);
|
|
transport.once("error", onerror);
|
|
transport.once("close", onTransportClose);
|
|
this.once("close", onclose);
|
|
this.once("upgrading", onupgrade);
|
|
if (this.upgrades.indexOf("webtransport") !== -1 && name !== "webtransport") {
|
|
// favor WebTransport
|
|
this.setTimeoutFn(function () {
|
|
if (!failed) {
|
|
transport.open();
|
|
}
|
|
}, 200);
|
|
} else {
|
|
transport.open();
|
|
}
|
|
}
|
|
/**
|
|
* Called when connection is deemed open.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onOpen",
|
|
value: function onOpen() {
|
|
this.readyState = "open";
|
|
Socket.priorWebsocketSuccess = "websocket" === this.transport.name;
|
|
this.emitReserved("open");
|
|
this.flush();
|
|
// we check for `readyState` in case an `open`
|
|
// listener already closed the socket
|
|
if ("open" === this.readyState && this.opts.upgrade) {
|
|
var i = 0;
|
|
var l = this.upgrades.length;
|
|
for (; i < l; i++) {
|
|
this.probe(this.upgrades[i]);
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Handles a packet.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onPacket",
|
|
value: function onPacket(packet) {
|
|
if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
|
|
this.emitReserved("packet", packet);
|
|
// Socket is live - any packet counts
|
|
this.emitReserved("heartbeat");
|
|
this.resetPingTimeout();
|
|
switch (packet.type) {
|
|
case "open":
|
|
this.onHandshake(JSON.parse(packet.data));
|
|
break;
|
|
case "ping":
|
|
this.sendPacket("pong");
|
|
this.emitReserved("ping");
|
|
this.emitReserved("pong");
|
|
break;
|
|
case "error":
|
|
var err = new Error("server error");
|
|
// @ts-ignore
|
|
err.code = packet.data;
|
|
this.onError(err);
|
|
break;
|
|
case "message":
|
|
this.emitReserved("data", packet.data);
|
|
this.emitReserved("message", packet.data);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Called upon handshake completion.
|
|
*
|
|
* @param {Object} data - handshake obj
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onHandshake",
|
|
value: function onHandshake(data) {
|
|
this.emitReserved("handshake", data);
|
|
this.id = data.sid;
|
|
this.transport.query.sid = data.sid;
|
|
this.upgrades = this.filterUpgrades(data.upgrades);
|
|
this.pingInterval = data.pingInterval;
|
|
this.pingTimeout = data.pingTimeout;
|
|
this.maxPayload = data.maxPayload;
|
|
this.onOpen();
|
|
// In case open handler closes socket
|
|
if ("closed" === this.readyState) return;
|
|
this.resetPingTimeout();
|
|
}
|
|
/**
|
|
* Sets and resets ping timeout timer based on server pings.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "resetPingTimeout",
|
|
value: function resetPingTimeout() {
|
|
var _this5 = this;
|
|
this.clearTimeoutFn(this.pingTimeoutTimer);
|
|
this.pingTimeoutTimer = this.setTimeoutFn(function () {
|
|
_this5.onClose("ping timeout");
|
|
}, this.pingInterval + this.pingTimeout);
|
|
if (this.opts.autoUnref) {
|
|
this.pingTimeoutTimer.unref();
|
|
}
|
|
}
|
|
/**
|
|
* Called on `drain` event
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onDrain",
|
|
value: function onDrain() {
|
|
this.writeBuffer.splice(0, this.prevBufferLen);
|
|
// setting prevBufferLen = 0 is very important
|
|
// for example, when upgrading, upgrade packet is sent over,
|
|
// and a nonzero prevBufferLen could cause problems on `drain`
|
|
this.prevBufferLen = 0;
|
|
if (0 === this.writeBuffer.length) {
|
|
this.emitReserved("drain");
|
|
} else {
|
|
this.flush();
|
|
}
|
|
}
|
|
/**
|
|
* Flush write buffers.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "flush",
|
|
value: function flush() {
|
|
if ("closed" !== this.readyState && this.transport.writable && !this.upgrading && this.writeBuffer.length) {
|
|
var packets = this.getWritablePackets();
|
|
this.transport.send(packets);
|
|
// keep track of current length of writeBuffer
|
|
// splice writeBuffer and callbackBuffer on `drain`
|
|
this.prevBufferLen = packets.length;
|
|
this.emitReserved("flush");
|
|
}
|
|
}
|
|
/**
|
|
* Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
|
|
* long-polling)
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "getWritablePackets",
|
|
value: function getWritablePackets() {
|
|
var shouldCheckPayloadSize = this.maxPayload && this.transport.name === "polling" && this.writeBuffer.length > 1;
|
|
if (!shouldCheckPayloadSize) {
|
|
return this.writeBuffer;
|
|
}
|
|
var payloadSize = 1; // first packet type
|
|
for (var i = 0; i < this.writeBuffer.length; i++) {
|
|
var data = this.writeBuffer[i].data;
|
|
if (data) {
|
|
payloadSize += byteLength(data);
|
|
}
|
|
if (i > 0 && payloadSize > this.maxPayload) {
|
|
return this.writeBuffer.slice(0, i);
|
|
}
|
|
payloadSize += 2; // separator + packet type
|
|
}
|
|
|
|
return this.writeBuffer;
|
|
}
|
|
/**
|
|
* Sends a message.
|
|
*
|
|
* @param {String} msg - message.
|
|
* @param {Object} options.
|
|
* @param {Function} callback function.
|
|
* @return {Socket} for chaining.
|
|
*/
|
|
}, {
|
|
key: "write",
|
|
value: function write(msg, options, fn) {
|
|
this.sendPacket("message", msg, options, fn);
|
|
return this;
|
|
}
|
|
}, {
|
|
key: "send",
|
|
value: function send(msg, options, fn) {
|
|
this.sendPacket("message", msg, options, fn);
|
|
return this;
|
|
}
|
|
/**
|
|
* Sends a packet.
|
|
*
|
|
* @param {String} type: packet type.
|
|
* @param {String} data.
|
|
* @param {Object} options.
|
|
* @param {Function} fn - callback function.
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "sendPacket",
|
|
value: function sendPacket(type, data, options, fn) {
|
|
if ("function" === typeof data) {
|
|
fn = data;
|
|
data = undefined;
|
|
}
|
|
if ("function" === typeof options) {
|
|
fn = options;
|
|
options = null;
|
|
}
|
|
if ("closing" === this.readyState || "closed" === this.readyState) {
|
|
return;
|
|
}
|
|
options = options || {};
|
|
options.compress = false !== options.compress;
|
|
var packet = {
|
|
type: type,
|
|
data: data,
|
|
options: options
|
|
};
|
|
this.emitReserved("packetCreate", packet);
|
|
this.writeBuffer.push(packet);
|
|
if (fn) this.once("flush", fn);
|
|
this.flush();
|
|
}
|
|
/**
|
|
* Closes the connection.
|
|
*/
|
|
}, {
|
|
key: "close",
|
|
value: function close() {
|
|
var _this6 = this;
|
|
var close = function close() {
|
|
_this6.onClose("forced close");
|
|
_this6.transport.close();
|
|
};
|
|
var cleanupAndClose = function cleanupAndClose() {
|
|
_this6.off("upgrade", cleanupAndClose);
|
|
_this6.off("upgradeError", cleanupAndClose);
|
|
close();
|
|
};
|
|
var waitForUpgrade = function waitForUpgrade() {
|
|
// wait for upgrade to finish since we can't send packets while pausing a transport
|
|
_this6.once("upgrade", cleanupAndClose);
|
|
_this6.once("upgradeError", cleanupAndClose);
|
|
};
|
|
if ("opening" === this.readyState || "open" === this.readyState) {
|
|
this.readyState = "closing";
|
|
if (this.writeBuffer.length) {
|
|
this.once("drain", function () {
|
|
if (_this6.upgrading) {
|
|
waitForUpgrade();
|
|
} else {
|
|
close();
|
|
}
|
|
});
|
|
} else if (this.upgrading) {
|
|
waitForUpgrade();
|
|
} else {
|
|
close();
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
/**
|
|
* Called upon transport error
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onError",
|
|
value: function onError(err) {
|
|
Socket.priorWebsocketSuccess = false;
|
|
this.emitReserved("error", err);
|
|
this.onClose("transport error", err);
|
|
}
|
|
/**
|
|
* Called upon transport close.
|
|
*
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "onClose",
|
|
value: function onClose(reason, description) {
|
|
if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
|
|
// clear timers
|
|
this.clearTimeoutFn(this.pingTimeoutTimer);
|
|
// stop event from firing again for transport
|
|
this.transport.removeAllListeners("close");
|
|
// ensure transport won't stay open
|
|
this.transport.close();
|
|
// ignore further transport communication
|
|
this.transport.removeAllListeners();
|
|
if (typeof removeEventListener === "function") {
|
|
removeEventListener("beforeunload", this.beforeunloadEventListener, false);
|
|
removeEventListener("offline", this.offlineEventListener, false);
|
|
}
|
|
// set ready state
|
|
this.readyState = "closed";
|
|
// clear session id
|
|
this.id = null;
|
|
// emit close event
|
|
this.emitReserved("close", reason, description);
|
|
// clean buffers after, so users can still
|
|
// grab the buffers on `close` event
|
|
this.writeBuffer = [];
|
|
this.prevBufferLen = 0;
|
|
}
|
|
}
|
|
/**
|
|
* Filters upgrades, returning only those matching client transports.
|
|
*
|
|
* @param {Array} upgrades - server upgrades
|
|
* @private
|
|
*/
|
|
}, {
|
|
key: "filterUpgrades",
|
|
value: function filterUpgrades(upgrades) {
|
|
var filteredUpgrades = [];
|
|
var i = 0;
|
|
var j = upgrades.length;
|
|
for (; i < j; i++) {
|
|
if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
|
|
}
|
|
return filteredUpgrades;
|
|
}
|
|
}]);
|
|
return Socket;
|
|
}(Emitter);
|
|
Socket.protocol = protocol;
|
|
|
|
var browserEntrypoint = (function (uri, opts) {
|
|
return new Socket(uri, opts);
|
|
});
|
|
|
|
return browserEntrypoint;
|
|
|
|
}));
|
|
//# sourceMappingURL=engine.io.js.map
|