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/*!
* Socket.IO v4.8.1
* (c) 2014-2024 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.io = factory());
})(this, (function () { 'use strict';
function _arrayLikeToArray(r, a) {
(null == a || a > r.length) && (a = r.length);
for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
return n;
}
function _arrayWithoutHoles(r) {
if (Array.isArray(r)) return _arrayLikeToArray(r);
}
function _construct(t, e, r) {
if (_isNativeReflectConstruct()) return Reflect.construct.apply(null, arguments);
var o = [null];
o.push.apply(o, e);
var p = new (t.bind.apply(t, o))();
return r && _setPrototypeOf(p, r.prototype), p;
}
function _defineProperties(e, r) {
for (var t = 0; t < r.length; t++) {
var o = r[t];
o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o);
}
}
function _createClass(e, r, t) {
return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", {
writable: !1
}), e;
}
function _createForOfIteratorHelper(r, e) {
var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
if (!t) {
if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) {
t && (r = t);
var n = 0,
F = function () {};
return {
s: F,
n: function () {
return n >= r.length ? {
done: !0
} : {
done: !1,
value: r[n++]
};
},
e: function (r) {
throw r;
},
f: F
};
}
throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
var o,
a = !0,
u = !1;
return {
s: function () {
t = t.call(r);
},
n: function () {
var r = t.next();
return a = r.done, r;
},
e: function (r) {
u = !0, o = r;
},
f: function () {
try {
a || null == t.return || t.return();
} finally {
if (u) throw o;
}
}
};
}
function _extends() {
return _extends = Object.assign ? Object.assign.bind() : function (n) {
for (var e = 1; e < arguments.length; e++) {
var t = arguments[e];
for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
}
return n;
}, _extends.apply(null, arguments);
}
function _getPrototypeOf(t) {
return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) {
return t.__proto__ || Object.getPrototypeOf(t);
}, _getPrototypeOf(t);
}
function _inheritsLoose(t, o) {
t.prototype = Object.create(o.prototype), t.prototype.constructor = t, _setPrototypeOf(t, o);
}
function _isNativeFunction(t) {
try {
return -1 !== Function.toString.call(t).indexOf("[native code]");
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return "function" == typeof t;
}
}
function _isNativeReflectConstruct() {
try {
var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
} catch (t) {}
return (_isNativeReflectConstruct = function () {
return !!t;
})();
}
function _iterableToArray(r) {
if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r);
}
function _nonIterableSpread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _setPrototypeOf(t, e) {
return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) {
return t.__proto__ = e, t;
}, _setPrototypeOf(t, e);
}
function _toConsumableArray(r) {
return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread();
}
function _toPrimitive(t, r) {
if ("object" != typeof t || !t) return t;
var e = t[Symbol.toPrimitive];
if (void 0 !== e) {
var i = e.call(t, r || "default");
if ("object" != typeof i) return i;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return ("string" === r ? String : Number)(t);
}
function _toPropertyKey(t) {
var i = _toPrimitive(t, "string");
return "symbol" == typeof i ? i : i + "";
}
function _typeof(o) {
"@babel/helpers - typeof";
return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
return typeof o;
} : function (o) {
return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
}, _typeof(o);
}
function _unsupportedIterableToArray(r, a) {
if (r) {
if ("string" == typeof r) return _arrayLikeToArray(r, a);
var t = {}.toString.call(r).slice(8, -1);
return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
}
}
function _wrapNativeSuper(t) {
var r = "function" == typeof Map ? new Map() : void 0;
return _wrapNativeSuper = function (t) {
if (null === t || !_isNativeFunction(t)) return t;
if ("function" != typeof t) throw new TypeError("Super expression must either be null or a function");
if (void 0 !== r) {
if (r.has(t)) return r.get(t);
r.set(t, Wrapper);
}
function Wrapper() {
return _construct(t, arguments, _getPrototypeOf(this).constructor);
}
return Wrapper.prototype = Object.create(t.prototype, {
constructor: {
value: Wrapper,
enumerable: !1,
writable: !0,
configurable: !0
}
}), _setPrototypeOf(Wrapper, t);
}, _wrapNativeSuper(t);
}
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$1 = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
var withNativeArrayBuffer$2 = typeof ArrayBuffer === "function";
// ArrayBuffer.isView method is not defined in IE10
var isView$1 = 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$1 && data instanceof Blob) {
if (supportsBinary) {
return callback(data);
} else {
return encodeBlobAsBase64(data, callback);
}
} else if (withNativeArrayBuffer$2 && (data instanceof ArrayBuffer || isView$1(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$1 && packet.data instanceof Blob) {
return packet.data.arrayBuffer().then(toArray).then(callback);
} else if (withNativeArrayBuffer$2 && (packet.data instanceof ArrayBuffer || isView$1(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$1 = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
for (var i = 0; i < chars.length; i++) {
lookup$1[chars.charCodeAt(i)] = i;
}
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$1[base64.charCodeAt(i)];
encoded2 = lookup$1[base64.charCodeAt(i + 1)];
encoded3 = lookup$1[base64.charCodeAt(i + 2)];
encoded4 = lookup$1[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$1 = 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$1) {
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 /* State.READ_HEADER */;
var expectedLength = -1;
var isBinary = false;
return new TransformStream({
transform: function transform(chunk, controller) {
chunks.push(chunk);
while (true) {
if (state === 0 /* State.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 /* State.READ_PAYLOAD */;
} else if (expectedLength === 126) {
state = 1 /* State.READ_EXTENDED_LENGTH_16 */;
} else {
state = 2 /* State.READ_EXTENDED_LENGTH_64 */;
}
} else if (state === 1 /* State.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 /* State.READ_PAYLOAD */;
} else if (state === 2 /* State.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 /* State.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 /* State.READ_HEADER */;
}
if (expectedLength === 0 || expectedLength > maxPayload) {
controller.enqueue(ERROR_PACKET);
break;
}
}
}
});
}
var protocol$1 = 4;
/**
* Initialize a new `Emitter`.
*
* @api public
*/
function Emitter(obj) {
if (obj) return mixin(obj);
}
/**
* Mixin the emitter properties.
*
* @param {Object} obj
* @return {Object}
* @api private
*/
function mixin(obj) {
for (var key in Emitter.prototype) {
obj[key] = Emitter.prototype[key];
}
return obj;
}
/**
* Listen on the given `event` with `fn`.
*
* @param {String} event
* @param {Function} fn
* @return {Emitter}
* @api public
*/
Emitter.prototype.on = Emitter.prototype.addEventListener = function (event, fn) {
this._callbacks = this._callbacks || {};
(this._callbacks['$' + 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 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 globalThisShim = function () {
if (typeof self !== "undefined") {
return self;
} else if (typeof window !== "undefined") {
return window;
} else {
return Function("return this")();
}
}();
var defaultBinaryType = "arraybuffer";
function createCookieJar() {}
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;
}
/**
* Generates a random 8-characters string.
*/
function randomString() {
return Date.now().toString(36).substring(3) + Math.random().toString(36).substring(2, 5);
}
// imported from https://github.com/galkn/querystring
/**
* Compiles a querystring
* Returns string representation of the object
*
* @param {Object}
* @api private
*/
function encode(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) {
function TransportError(reason, description, context) {
var _this;
_this = _Error.call(this, reason) || this;
_this.description = description;
_this.context = context;
_this.type = "TransportError";
return _this;
}
_inheritsLoose(TransportError, _Error);
return TransportError;
}( /*#__PURE__*/_wrapNativeSuper(Error));
var Transport = /*#__PURE__*/function (_Emitter) {
/**
* Transport abstract constructor.
*
* @param {Object} opts - options
* @protected
*/
function Transport(opts) {
var _this2;
_this2 = _Emitter.call(this) || this;
_this2.writable = false;
installTimerFunctions(_this2, opts);
_this2.opts = opts;
_this2.query = opts.query;
_this2.socket = opts.socket;
_this2.supportsBinary = !opts.forceBase64;
return _this2;
}
/**
* Emits an error.
*
* @param {String} reason
* @param description
* @param context - the error context
* @return {Transport} for chaining
* @protected
*/
_inheritsLoose(Transport, _Emitter);
var _proto = Transport.prototype;
_proto.onError = function onError(reason, description, context) {
_Emitter.prototype.emitReserved.call(this, "error", new TransportError(reason, description, context));
return this;
}
/**
* Opens the transport.
*/;
_proto.open = function open() {
this.readyState = "opening";
this.doOpen();
return this;
}
/**
* Closes the transport.
*/;
_proto.close = function close() {
if (this.readyState === "opening" || this.readyState === "open") {
this.doClose();
this.onClose();
}
return this;
}
/**
* Sends multiple packets.
*
* @param {Array} packets
*/;
_proto.send = function send(packets) {
if (this.readyState === "open") {
this.write(packets);
}
}
/**
* Called upon open
*
* @protected
*/;
_proto.onOpen = function onOpen() {
this.readyState = "open";
this.writable = true;
_Emitter.prototype.emitReserved.call(this, "open");
}
/**
* Called with data.
*
* @param {String} data
* @protected
*/;
_proto.onData = function onData(data) {
var packet = decodePacket(data, this.socket.binaryType);
this.onPacket(packet);
}
/**
* Called with a decoded packet.
*
* @protected
*/;
_proto.onPacket = function onPacket(packet) {
_Emitter.prototype.emitReserved.call(this, "packet", packet);
}
/**
* Called upon close.
*
* @protected
*/;
_proto.onClose = function onClose(details) {
this.readyState = "closed";
_Emitter.prototype.emitReserved.call(this, "close", details);
}
/**
* Pauses the transport, in order not to lose packets during an upgrade.
*
* @param onPause
*/;
_proto.pause = function pause(onPause) {};
_proto.createUri = 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);
};
_proto._hostname = function _hostname() {
var hostname = this.opts.hostname;
return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
};
_proto._port = 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 "";
}
};
_proto._query = function _query(query) {
var encodedQuery = encode(query);
return encodedQuery.length ? "?" + encodedQuery : "";
};
return Transport;
}(Emitter);
var Polling = /*#__PURE__*/function (_Transport) {
function Polling() {
var _this;
_this = _Transport.apply(this, arguments) || this;
_this._polling = false;
return _this;
}
_inheritsLoose(Polling, _Transport);
var _proto = Polling.prototype;
/**
* Opens the socket (triggers polling). We write a PING message to determine
* when the transport is open.
*
* @protected
*/
_proto.doOpen = function doOpen() {
this._poll();
}
/**
* Pauses polling.
*
* @param {Function} onPause - callback upon buffers are flushed and transport is paused
* @package
*/;
_proto.pause = 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
*/;
_proto._poll = function _poll() {
this._polling = true;
this.doPoll();
this.emitReserved("poll");
}
/**
* Overloads onData to detect payloads.
*
* @protected
*/;
_proto.onData = 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
*/;
_proto.doClose = 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
*/;
_proto.write = 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
*/;
_proto.uri = 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] = randomString();
}
if (!this.supportsBinary && !query.sid) {
query.b64 = 1;
}
return this.createUri(schema, query);
};
return _createClass(Polling, [{
key: "name",
get: function get() {
return "polling";
}
}]);
}(Transport);
// 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;
function empty() {}
var BaseXHR = /*#__PURE__*/function (_Polling) {
/**
* XHR Polling constructor.
*
* @param {Object} opts
* @package
*/
function BaseXHR(opts) {
var _this;
_this = _Polling.call(this, opts) || this;
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;
}
return _this;
}
/**
* Sends data.
*
* @param {String} data to send.
* @param {Function} called upon flush.
* @private
*/
_inheritsLoose(BaseXHR, _Polling);
var _proto = BaseXHR.prototype;
_proto.doWrite = function doWrite(data, fn) {
var _this2 = this;
var req = this.request({
method: "POST",
data: data
});
req.on("success", fn);
req.on("error", function (xhrStatus, context) {
_this2.onError("xhr post error", xhrStatus, context);
});
}
/**
* Starts a poll cycle.
*
* @private
*/;
_proto.doPoll = function doPoll() {
var _this3 = this;
var req = this.request();
req.on("data", this.onData.bind(this));
req.on("error", function (xhrStatus, context) {
_this3.onError("xhr poll error", xhrStatus, context);
});
this.pollXhr = req;
};
return BaseXHR;
}(Polling);
var Request = /*#__PURE__*/function (_Emitter) {
/**
* Request constructor
*
* @param {Object} options
* @package
*/
function Request(createRequest, uri, opts) {
var _this4;
_this4 = _Emitter.call(this) || this;
_this4.createRequest = createRequest;
installTimerFunctions(_this4, opts);
_this4._opts = opts;
_this4._method = opts.method || "GET";
_this4._uri = uri;
_this4._data = undefined !== opts.data ? opts.data : null;
_this4._create();
return _this4;
}
/**
* Creates the XHR object and sends the request.
*
* @private
*/
_inheritsLoose(Request, _Emitter);
var _proto2 = Request.prototype;
_proto2._create = function _create() {
var _this5 = 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 = this.createRequest(opts);
try {
xhr.open(this._method, this._uri, true);
try {
if (this._opts.extraHeaders) {
// @ts-ignore
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 = _this5._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(
// @ts-ignore
xhr.getResponseHeader("set-cookie"));
}
if (4 !== xhr.readyState) return;
if (200 === xhr.status || 1223 === xhr.status) {
_this5._onLoad();
} else {
// make sure the `error` event handler that's user-set
// does not throw in the same tick and gets caught here
_this5.setTimeoutFn(function () {
_this5._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 () {
_this5._onError(e);
}, 0);
return;
}
if (typeof document !== "undefined") {
this._index = Request.requestsCount++;
Request.requests[this._index] = this;
}
}
/**
* Called upon error.
*
* @private
*/;
_proto2._onError = function _onError(err) {
this.emitReserved("error", err, this._xhr);
this._cleanup(true);
}
/**
* Cleans up house.
*
* @private
*/;
_proto2._cleanup = 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
*/;
_proto2._onLoad = function _onLoad() {
var data = this._xhr.responseText;
if (data !== null) {
this.emitReserved("data", data);
this.emitReserved("success");
this._cleanup();
}
}
/**
* Aborts the request.
*
* @package
*/;
_proto2.abort = 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 hasXHR2 = function () {
var xhr = newRequest({
xdomain: false
});
return xhr && xhr.responseType !== null;
}();
/**
* HTTP long-polling based on the built-in `XMLHttpRequest` object.
*
* Usage: browser
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
*/
var XHR = /*#__PURE__*/function (_BaseXHR) {
function XHR(opts) {
var _this6;
_this6 = _BaseXHR.call(this, opts) || this;
var forceBase64 = opts && opts.forceBase64;
_this6.supportsBinary = hasXHR2 && !forceBase64;
return _this6;
}
_inheritsLoose(XHR, _BaseXHR);
var _proto3 = XHR.prototype;
_proto3.request = function request() {
var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_extends(opts, {
xd: this.xd
}, this.opts);
return new Request(newRequest, this.uri(), opts);
};
return XHR;
}(BaseXHR);
function newRequest(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) {}
}
}
// detect ReactNative environment
var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
var BaseWS = /*#__PURE__*/function (_Transport) {
function BaseWS() {
return _Transport.apply(this, arguments) || this;
}
_inheritsLoose(BaseWS, _Transport);
var _proto = BaseWS.prototype;
_proto.doOpen = function doOpen() {
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 = this.createSocket(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
*/;
_proto.addEventListeners = function addEventListeners() {
var _this = this;
this.ws.onopen = function () {
if (_this.opts.autoUnref) {
_this.ws._socket.unref();
}
_this.onOpen();
};
this.ws.onclose = function (closeEvent) {
return _this.onClose({
description: "websocket connection closed",
context: closeEvent
});
};
this.ws.onmessage = function (ev) {
return _this.onData(ev.data);
};
this.ws.onerror = function (e) {
return _this.onError("websocket error", e);
};
};
_proto.write = function write(packets) {
var _this2 = this;
this.writable = false;
// encodePacket efficient as it uses WS framing
// no need for encodePayload
var _loop = function _loop() {
var packet = packets[i];
var lastPacket = i === packets.length - 1;
encodePacket(packet, _this2.supportsBinary, function (data) {
// 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 {
_this2.doWrite(packet, data);
} catch (e) {}
if (lastPacket) {
// fake drain
// defer to next tick to allow Socket to clear writeBuffer
nextTick(function () {
_this2.writable = true;
_this2.emitReserved("drain");
}, _this2.setTimeoutFn);
}
});
};
for (var i = 0; i < packets.length; i++) {
_loop();
}
};
_proto.doClose = function doClose() {
if (typeof this.ws !== "undefined") {
this.ws.onerror = function () {};
this.ws.close();
this.ws = null;
}
}
/**
* Generates uri for connection.
*
* @private
*/;
_proto.uri = 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] = randomString();
}
// communicate binary support capabilities
if (!this.supportsBinary) {
query.b64 = 1;
}
return this.createUri(schema, query);
};
return _createClass(BaseWS, [{
key: "name",
get: function get() {
return "websocket";
}
}]);
}(Transport);
var WebSocketCtor = globalThisShim.WebSocket || globalThisShim.MozWebSocket;
/**
* WebSocket transport based on the built-in `WebSocket` object.
*
* Usage: browser, Node.js (since v21), Deno, Bun
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
* @see https://caniuse.com/mdn-api_websocket
* @see https://nodejs.org/api/globals.html#websocket
*/
var WS = /*#__PURE__*/function (_BaseWS) {
function WS() {
return _BaseWS.apply(this, arguments) || this;
}
_inheritsLoose(WS, _BaseWS);
var _proto2 = WS.prototype;
_proto2.createSocket = function createSocket(uri, protocols, opts) {
return !isReactNative ? protocols ? new WebSocketCtor(uri, protocols) : new WebSocketCtor(uri) : new WebSocketCtor(uri, protocols, opts);
};
_proto2.doWrite = function doWrite(_packet, data) {
this.ws.send(data);
};
return WS;
}(BaseWS);
/**
* WebTransport transport based on the built-in `WebTransport` object.
*
* Usage: browser, Node.js (with the `@fails-components/webtransport` package)
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
* @see https://caniuse.com/webtransport
*/
var WT = /*#__PURE__*/function (_Transport) {
function WT() {
return _Transport.apply(this, arguments) || this;
}
_inheritsLoose(WT, _Transport);
var _proto = WT.prototype;
_proto.doOpen = function doOpen() {
var _this = this;
try {
// @ts-ignore
this._transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
} catch (err) {
return this.emitReserved("error", err);
}
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();
});
});
});
};
_proto.write = function write(packets) {
var _this2 = this;
this.writable = false;
var _loop = function _loop() {
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();
}
};
_proto.doClose = function doClose() {
var _a;
(_a = this._transport) === null || _a === void 0 ? void 0 : _a.close();
};
return _createClass(WT, [{
key: "name",
get: function get() {
return "webtransport";
}
}]);
}(Transport);
var transports = {
websocket: WS,
webtransport: WT,
polling: XHR
};
// 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 > 8000) {
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 withEventListeners = typeof addEventListener === "function" && typeof removeEventListener === "function";
var OFFLINE_EVENT_LISTENERS = [];
if (withEventListeners) {
// within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
// script, so we create one single event listener here which will forward the event to the socket instances
addEventListener("offline", function () {
OFFLINE_EVENT_LISTENERS.forEach(function (listener) {
return listener();
});
}, false);
}
/**
* This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
* with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
*
* This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
* successfully establishes the connection.
*
* In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
*
* @example
* import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
*
* const socket = new SocketWithoutUpgrade({
* transports: [WebSocket]
* });
*
* socket.on("open", () => {
* socket.send("hello");
* });
*
* @see SocketWithUpgrade
* @see Socket
*/
var SocketWithoutUpgrade = /*#__PURE__*/function (_Emitter) {
/**
* Socket constructor.
*
* @param {String|Object} uri - uri or options
* @param {Object} opts - options
*/
function SocketWithoutUpgrade(uri, opts) {
var _this;
_this = _Emitter.call(this) || this;
_this.binaryType = defaultBinaryType;
_this.writeBuffer = [];
_this._prevBufferLen = 0;
_this._pingInterval = -1;
_this._pingTimeout = -1;
_this._maxPayload = -1;
/**
* The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
* callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
*/
_this._pingTimeoutTime = Infinity;
if (uri && "object" === _typeof(uri)) {
opts = uri;
uri = null;
}
if (uri) {
var parsedUri = parse(uri);
opts.hostname = parsedUri.host;
opts.secure = parsedUri.protocol === "https" || parsedUri.protocol === "wss";
opts.port = parsedUri.port;
if (parsedUri.query) opts.query = parsedUri.query;
} else if (opts.host) {
opts.hostname = parse(opts.host).host;
}
installTimerFunctions(_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 = [];
_this._transportsByName = {};
opts.transports.forEach(function (t) {
var transportName = t.prototype.name;
_this.transports.push(transportName);
_this._transportsByName[transportName] = t;
});
_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);
}
if (withEventListeners) {
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"
});
};
OFFLINE_EVENT_LISTENERS.push(_this._offlineEventListener);
}
}
if (_this.opts.withCredentials) {
_this._cookieJar = createCookieJar();
}
_this._open();
return _this;
}
/**
* Creates transport of the given type.
*
* @param {String} name - transport name
* @return {Transport}
* @private
*/
_inheritsLoose(SocketWithoutUpgrade, _Emitter);
var _proto = SocketWithoutUpgrade.prototype;
_proto.createTransport = function createTransport(name) {
var query = _extends({}, this.opts.query);
// append engine.io protocol identifier
query.EIO = protocol$1;
// 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 this._transportsByName[name](opts);
}
/**
* Initializes transport to use and starts probe.
*
* @private
*/;
_proto._open = function _open() {
var _this2 = this;
if (this.transports.length === 0) {
// Emit error on next tick so it can be listened to
this.setTimeoutFn(function () {
_this2.emitReserved("error", "No transports available");
}, 0);
return;
}
var transportName = this.opts.rememberUpgrade && SocketWithoutUpgrade.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1 ? "websocket" : this.transports[0];
this.readyState = "opening";
var transport = this.createTransport(transportName);
transport.open();
this.setTransport(transport);
}
/**
* Sets the current transport. Disables the existing one (if any).
*
* @private
*/;
_proto.setTransport = 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);
});
}
/**
* Called when connection is deemed open.
*
* @private
*/;
_proto.onOpen = function onOpen() {
this.readyState = "open";
SocketWithoutUpgrade.priorWebsocketSuccess = "websocket" === this.transport.name;
this.emitReserved("open");
this.flush();
}
/**
* Handles a packet.
*
* @private
*/;
_proto._onPacket = 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");
switch (packet.type) {
case "open":
this.onHandshake(JSON.parse(packet.data));
break;
case "ping":
this._sendPacket("pong");
this.emitReserved("ping");
this.emitReserved("pong");
this._resetPingTimeout();
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
*/;
_proto.onHandshake = function onHandshake(data) {
this.emitReserved("handshake", data);
this.id = data.sid;
this.transport.query.sid = data.sid;
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
*/;
_proto._resetPingTimeout = function _resetPingTimeout() {
var _this4 = this;
this.clearTimeoutFn(this._pingTimeoutTimer);
var delay = this._pingInterval + this._pingTimeout;
this._pingTimeoutTime = Date.now() + delay;
this._pingTimeoutTimer = this.setTimeoutFn(function () {
_this4._onClose("ping timeout");
}, delay);
if (this.opts.autoUnref) {
this._pingTimeoutTimer.unref();
}
}
/**
* Called on `drain` event
*
* @private
*/;
_proto._onDrain = 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
*/;
_proto.flush = 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
*/;
_proto._getWritablePackets = 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;
}
/**
* Checks whether the heartbeat timer has expired but the socket has not yet been notified.
*
* Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
* `write()` method then the message would not be buffered by the Socket.IO client.
*
* @return {boolean}
* @private
*/
/* private */;
_proto._hasPingExpired = function _hasPingExpired() {
var _this5 = this;
if (!this._pingTimeoutTime) return true;
var hasExpired = Date.now() > this._pingTimeoutTime;
if (hasExpired) {
this._pingTimeoutTime = 0;
nextTick(function () {
_this5._onClose("ping timeout");
}, this.setTimeoutFn);
}
return hasExpired;
}
/**
* Sends a message.
*
* @param {String} msg - message.
* @param {Object} options.
* @param {Function} fn - callback function.
* @return {Socket} for chaining.
*/;
_proto.write = function write(msg, options, fn) {
this._sendPacket("message", msg, options, fn);
return this;
}
/**
* Sends a message. Alias of {@link Socket#write}.
*
* @param {String} msg - message.
* @param {Object} options.
* @param {Function} fn - callback function.
* @return {Socket} for chaining.
*/;
_proto.send = 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
*/;
_proto._sendPacket = 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.
*/;
_proto.close = 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
*/;
_proto._onError = function _onError(err) {
SocketWithoutUpgrade.priorWebsocketSuccess = false;
if (this.opts.tryAllTransports && this.transports.length > 1 && this.readyState === "opening") {
this.transports.shift();
return this._open();
}
this.emitReserved("error", err);
this._onClose("transport error", err);
}
/**
* Called upon transport close.
*
* @private
*/;
_proto._onClose = 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 (withEventListeners) {
if (this._beforeunloadEventListener) {
removeEventListener("beforeunload", this._beforeunloadEventListener, false);
}
if (this._offlineEventListener) {
var i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
if (i !== -1) {
OFFLINE_EVENT_LISTENERS.splice(i, 1);
}
}
}
// 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;
}
};
return SocketWithoutUpgrade;
}(Emitter);
SocketWithoutUpgrade.protocol = protocol$1;
/**
* This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
* with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
*
* This class comes with an upgrade mechanism, which means that once the connection is established with the first
* low-level transport, it will try to upgrade to a better transport.
*
* In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
*
* @example
* import { SocketWithUpgrade, WebSocket } from "engine.io-client";
*
* const socket = new SocketWithUpgrade({
* transports: [WebSocket]
* });
*
* socket.on("open", () => {
* socket.send("hello");
* });
*
* @see SocketWithoutUpgrade
* @see Socket
*/
var SocketWithUpgrade = /*#__PURE__*/function (_SocketWithoutUpgrade) {
function SocketWithUpgrade() {
var _this7;
_this7 = _SocketWithoutUpgrade.apply(this, arguments) || this;
_this7._upgrades = [];
return _this7;
}
_inheritsLoose(SocketWithUpgrade, _SocketWithoutUpgrade);
var _proto2 = SocketWithUpgrade.prototype;
_proto2.onOpen = function onOpen() {
_SocketWithoutUpgrade.prototype.onOpen.call(this);
if ("open" === this.readyState && this.opts.upgrade) {
for (var i = 0; i < this._upgrades.length; i++) {
this._probe(this._upgrades[i]);
}
}
}
/**
* Probes a transport.
*
* @param {String} name - transport name
* @private
*/;
_proto2._probe = function _probe(name) {
var _this8 = this;
var transport = this.createTransport(name);
var failed = false;
SocketWithoutUpgrade.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) {
_this8.upgrading = true;
_this8.emitReserved("upgrading", transport);
if (!transport) return;
SocketWithoutUpgrade.priorWebsocketSuccess = "websocket" === transport.name;
_this8.transport.pause(function () {
if (failed) return;
if ("closed" === _this8.readyState) return;
cleanup();
_this8.setTransport(transport);
transport.send([{
type: "upgrade"
}]);
_this8.emitReserved("upgrade", transport);
transport = null;
_this8.upgrading = false;
_this8.flush();
});
} else {
var err = new Error("probe error");
// @ts-ignore
err.transport = transport.name;
_this8.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();
_this8.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);
_this8.off("close", onclose);
_this8.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();
}
};
_proto2.onHandshake = function onHandshake(data) {
this._upgrades = this._filterUpgrades(data.upgrades);
_SocketWithoutUpgrade.prototype.onHandshake.call(this, data);
}
/**
* Filters upgrades, returning only those matching client transports.
*
* @param {Array} upgrades - server upgrades
* @private
*/;
_proto2._filterUpgrades = function _filterUpgrades(upgrades) {
var filteredUpgrades = [];
for (var i = 0; i < upgrades.length; i++) {
if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
}
return filteredUpgrades;
};
return SocketWithUpgrade;
}(SocketWithoutUpgrade);
/**
* This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
* with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
*
* This class comes with an upgrade mechanism, which means that once the connection is established with the first
* low-level transport, it will try to upgrade to a better transport.
*
* @example
* import { Socket } from "engine.io-client";
*
* const socket = new Socket();
*
* socket.on("open", () => {
* socket.send("hello");
* });
*
* @see SocketWithoutUpgrade
* @see SocketWithUpgrade
*/
var Socket$1 = /*#__PURE__*/function (_SocketWithUpgrade) {
function Socket(uri) {
var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var o = _typeof(uri) === "object" ? uri : opts;
if (!o.transports || o.transports && typeof o.transports[0] === "string") {
o.transports = (o.transports || ["polling", "websocket", "webtransport"]).map(function (transportName) {
return transports[transportName];
}).filter(function (t) {
return !!t;
});
}
return _SocketWithUpgrade.call(this, uri, o) || this;
}
_inheritsLoose(Socket, _SocketWithUpgrade);
return Socket;
}(SocketWithUpgrade);
Socket$1.protocol;
function getDefaultExportFromCjs (x) {
return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}
var browser = {exports: {}};
var ms;
var hasRequiredMs;
function requireMs() {
if (hasRequiredMs) return ms;
hasRequiredMs = 1;
var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var w = d * 7;
var y = d * 365.25;
/**
* Parse or format the given `val`.
*
* Options:
*
* - `long` verbose formatting [false]
*
* @param {String|Number} val
* @param {Object} [options]
* @throws {Error} throw an error if val is not a non-empty string or a number
* @return {String|Number}
* @api public
*/
ms = function ms(val, options) {
options = options || {};
var type = _typeof(val);
if (type === 'string' && val.length > 0) {
return parse(val);
} else if (type === 'number' && isFinite(val)) {
return options["long"] ? fmtLong(val) : fmtShort(val);
}
throw new Error('val is not a non-empty string or a valid number. val=' + JSON.stringify(val));
};
/**
* Parse the given `str` and return milliseconds.
*
* @param {String} str
* @return {Number}
* @api private
*/
function parse(str) {
str = String(str);
if (str.length > 100) {
return;
}
var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(str);
if (!match) {
return;
}
var n = parseFloat(match[1]);
var type = (match[2] || 'ms').toLowerCase();
switch (type) {
case 'years':
case 'year':
case 'yrs':
case 'yr':
case 'y':
return n * y;
case 'weeks':
case 'week':
case 'w':
return n * w;
case 'days':
case 'day':
case 'd':
return n * d;
case 'hours':
case 'hour':
case 'hrs':
case 'hr':
case 'h':
return n * h;
case 'minutes':
case 'minute':
case 'mins':
case 'min':
case 'm':
return n * m;
case 'seconds':
case 'second':
case 'secs':
case 'sec':
case 's':
return n * s;
case 'milliseconds':
case 'millisecond':
case 'msecs':
case 'msec':
case 'ms':
return n;
default:
return undefined;
}
}
/**
* Short format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtShort(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return Math.round(ms / d) + 'd';
}
if (msAbs >= h) {
return Math.round(ms / h) + 'h';
}
if (msAbs >= m) {
return Math.round(ms / m) + 'm';
}
if (msAbs >= s) {
return Math.round(ms / s) + 's';
}
return ms + 'ms';
}
/**
* Long format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtLong(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return plural(ms, msAbs, d, 'day');
}
if (msAbs >= h) {
return plural(ms, msAbs, h, 'hour');
}
if (msAbs >= m) {
return plural(ms, msAbs, m, 'minute');
}
if (msAbs >= s) {
return plural(ms, msAbs, s, 'second');
}
return ms + ' ms';
}
/**
* Pluralization helper.
*/
function plural(ms, msAbs, n, name) {
var isPlural = msAbs >= n * 1.5;
return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
}
return ms;
}
/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function setup(env) {
createDebug.debug = createDebug;
createDebug["default"] = createDebug;
createDebug.coerce = coerce;
createDebug.disable = disable;
createDebug.enable = enable;
createDebug.enabled = enabled;
createDebug.humanize = requireMs();
createDebug.destroy = destroy;
Object.keys(env).forEach(function (key) {
createDebug[key] = env[key];
});
/**
* The currently active debug mode names, and names to skip.
*/
createDebug.names = [];
createDebug.skips = [];
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug.formatters = {};
/**
* Selects a color for a debug namespace
* @param {String} namespace The namespace string for the debug instance to be colored
* @return {Number|String} An ANSI color code for the given namespace
* @api private
*/
function selectColor(namespace) {
var hash = 0;
for (var i = 0; i < namespace.length; i++) {
hash = (hash << 5) - hash + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
}
createDebug.selectColor = selectColor;
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
var prevTime;
var enableOverride = null;
var namespacesCache;
var enabledCache;
function debug() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
// Disabled?
if (!debug.enabled) {
return;
}
var self = debug;
// Set `diff` timestamp
var curr = Number(new Date());
var ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
args[0] = createDebug.coerce(args[0]);
if (typeof args[0] !== 'string') {
// Anything else let's inspect with %O
args.unshift('%O');
}
// Apply any `formatters` transformations
var index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
// If we encounter an escaped % then don't increase the array index
if (match === '%%') {
return '%';
}
index++;
var formatter = createDebug.formatters[format];
if (typeof formatter === 'function') {
var val = args[index];
match = formatter.call(self, val);
// Now we need to remove `args[index]` since it's inlined in the `format`
args.splice(index, 1);
index--;
}
return match;
});
// Apply env-specific formatting (colors, etc.)
createDebug.formatArgs.call(self, args);
var logFn = self.log || createDebug.log;
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.useColors = createDebug.useColors();
debug.color = createDebug.selectColor(namespace);
debug.extend = extend;
debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.
Object.defineProperty(debug, 'enabled', {
enumerable: true,
configurable: false,
get: function get() {
if (enableOverride !== null) {
return enableOverride;
}
if (namespacesCache !== createDebug.namespaces) {
namespacesCache = createDebug.namespaces;
enabledCache = createDebug.enabled(namespace);
}
return enabledCache;
},
set: function set(v) {
enableOverride = v;
}
});
// Env-specific initialization logic for debug instances
if (typeof createDebug.init === 'function') {
createDebug.init(debug);
}
return debug;
}
function extend(namespace, delimiter) {
var newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
newDebug.log = this.log;
return newDebug;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
createDebug.save(namespaces);
createDebug.namespaces = namespaces;
createDebug.names = [];
createDebug.skips = [];
var i;
var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
var len = split.length;
for (i = 0; i < len; i++) {
if (!split[i]) {
// ignore empty strings
continue;
}
namespaces = split[i].replace(/\*/g, '.*?');
if (namespaces[0] === '-') {
createDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));
} else {
createDebug.names.push(new RegExp('^' + namespaces + '$'));
}
}
}
/**
* Disable debug output.
*
* @return {String} namespaces
* @api public
*/
function disable() {
var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
return '-' + namespace;
}))).join(',');
createDebug.enable('');
return namespaces;
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
if (name[name.length - 1] === '*') {
return true;
}
var i;
var len;
for (i = 0, len = createDebug.skips.length; i < len; i++) {
if (createDebug.skips[i].test(name)) {
return false;
}
}
for (i = 0, len = createDebug.names.length; i < len; i++) {
if (createDebug.names[i].test(name)) {
return true;
}
}
return false;
}
/**
* Convert regexp to namespace
*
* @param {RegExp} regxep
* @return {String} namespace
* @api private
*/
function toNamespace(regexp) {
return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) {
return val.stack || val.message;
}
return val;
}
/**
* XXX DO NOT USE. This is a temporary stub function.
* XXX It WILL be removed in the next major release.
*/
function destroy() {
console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
}
createDebug.enable(createDebug.load());
return createDebug;
}
var common = setup;
/* eslint-env browser */
browser.exports;
(function (module, exports) {
/**
* This is the web browser implementation of `debug()`.
*/
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
exports.destroy = function () {
var warned = false;
return function () {
if (!warned) {
warned = true;
console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
}
};
}();
/**
* Colors.
*/
exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];
/**
* Currently only WebKit-based Web Inspectors, Firefox >= v31,
* and the Firebug extension (any Firefox version) are known
* to support "%c" CSS customizations.
*
* TODO: add a `localStorage` variable to explicitly enable/disable colors
*/
// eslint-disable-next-line complexity
function useColors() {
// NB: In an Electron preload script, document will be defined but not fully
// initialized. Since we know we're in Chrome, we'll just detect this case
// explicitly
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
return true;
}
// Internet Explorer and Edge do not support colors.
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
return false;
}
// Is webkit? http://stackoverflow.com/a/16459606/376773
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
// Is firebug? http://stackoverflow.com/a/398120/376773
typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
// Is firefox >= v31?
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
// Double check webkit in userAgent just in case we are in a worker
typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
}
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);
if (!this.useColors) {
return;
}
var c = 'color: ' + this.color;
args.splice(1, 0, c, 'color: inherit');
// The final "%c" is somewhat tricky, because there could be other
// arguments passed either before or after the %c, so we need to
// figure out the correct index to insert the CSS into
var index = 0;
var lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, function (match) {
if (match === '%%') {
return;
}
index++;
if (match === '%c') {
// We only are interested in the *last* %c
// (the user may have provided their own)
lastC = index;
}
});
args.splice(lastC, 0, c);
}
/**
* Invokes `console.debug()` when available.
* No-op when `console.debug` is not a "function".
* If `console.debug` is not available, falls back
* to `console.log`.
*
* @api public
*/
exports.log = console.debug || console.log || function () {};
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (namespaces) {
exports.storage.setItem('debug', namespaces);
} else {
exports.storage.removeItem('debug');
}
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
var r;
try {
r = exports.storage.getItem('debug');
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
if (!r && typeof process !== 'undefined' && 'env' in process) {
r = process.env.DEBUG;
}
return r;
}
/**
* Localstorage attempts to return the localstorage.
*
* This is necessary because safari throws
* when a user disables cookies/localstorage
* and you attempt to access it.
*
* @return {LocalStorage}
* @api private
*/
function localstorage() {
try {
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
// The Browser also has localStorage in the global context.
return localStorage;
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
module.exports = common(exports);
var formatters = module.exports.formatters;
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
formatters.j = function (v) {
try {
return JSON.stringify(v);
} catch (error) {
return '[UnexpectedJSONParseError]: ' + error.message;
}
};
})(browser, browser.exports);
var browserExports = browser.exports;
var debugModule = /*@__PURE__*/getDefaultExportFromCjs(browserExports);
var debug$3 = debugModule("socket.io-client:url"); // debug()
/**
* URL parser.
*
* @param uri - url
* @param path - the request path of the connection
* @param loc - An object meant to mimic window.location.
* Defaults to window.location.
* @public
*/
function url(uri) {
var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
var loc = arguments.length > 2 ? arguments[2] : undefined;
var obj = uri;
// default to window.location
loc = loc || typeof location !== "undefined" && location;
if (null == uri) uri = loc.protocol + "//" + loc.host;
// relative path support
if (typeof uri === "string") {
if ("/" === uri.charAt(0)) {
if ("/" === uri.charAt(1)) {
uri = loc.protocol + uri;
} else {
uri = loc.host + uri;
}
}
if (!/^(https?|wss?):\/\//.test(uri)) {
debug$3("protocol-less url %s", uri);
if ("undefined" !== typeof loc) {
uri = loc.protocol + "//" + uri;
} else {
uri = "https://" + uri;
}
}
// parse
debug$3("parse %s", uri);
obj = parse(uri);
}
// make sure we treat `localhost:80` and `localhost` equally
if (!obj.port) {
if (/^(http|ws)$/.test(obj.protocol)) {
obj.port = "80";
} else if (/^(http|ws)s$/.test(obj.protocol)) {
obj.port = "443";
}
}
obj.path = obj.path || "/";
var ipv6 = obj.host.indexOf(":") !== -1;
var host = ipv6 ? "[" + obj.host + "]" : obj.host;
// define unique id
obj.id = obj.protocol + "://" + host + ":" + obj.port + path;
// define href
obj.href = obj.protocol + "://" + host + (loc && loc.port === obj.port ? "" : ":" + obj.port);
return obj;
}
var withNativeArrayBuffer = typeof ArrayBuffer === "function";
var isView = function isView(obj) {
return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj.buffer instanceof ArrayBuffer;
};
var toString = Object.prototype.toString;
var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && toString.call(Blob) === "[object BlobConstructor]";
var withNativeFile = typeof File === "function" || typeof File !== "undefined" && toString.call(File) === "[object FileConstructor]";
/**
* Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
*
* @private
*/
function isBinary(obj) {
return withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)) || withNativeBlob && obj instanceof Blob || withNativeFile && obj instanceof File;
}
function hasBinary(obj, toJSON) {
if (!obj || _typeof(obj) !== "object") {
return false;
}
if (Array.isArray(obj)) {
for (var i = 0, l = obj.length; i < l; i++) {
if (hasBinary(obj[i])) {
return true;
}
}
return false;
}
if (isBinary(obj)) {
return true;
}
if (obj.toJSON && typeof obj.toJSON === "function" && arguments.length === 1) {
return hasBinary(obj.toJSON(), true);
}
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
return true;
}
}
return false;
}
/**
* Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
*
* @param {Object} packet - socket.io event packet
* @return {Object} with deconstructed packet and list of buffers
* @public
*/
function deconstructPacket(packet) {
var buffers = [];
var packetData = packet.data;
var pack = packet;
pack.data = _deconstructPacket(packetData, buffers);
pack.attachments = buffers.length; // number of binary 'attachments'
return {
packet: pack,
buffers: buffers
};
}
function _deconstructPacket(data, buffers) {
if (!data) return data;
if (isBinary(data)) {
var placeholder = {
_placeholder: true,
num: buffers.length
};
buffers.push(data);
return placeholder;
} else if (Array.isArray(data)) {
var newData = new Array(data.length);
for (var i = 0; i < data.length; i++) {
newData[i] = _deconstructPacket(data[i], buffers);
}
return newData;
} else if (_typeof(data) === "object" && !(data instanceof Date)) {
var _newData = {};
for (var key in data) {
if (Object.prototype.hasOwnProperty.call(data, key)) {
_newData[key] = _deconstructPacket(data[key], buffers);
}
}
return _newData;
}
return data;
}
/**
* Reconstructs a binary packet from its placeholder packet and buffers
*
* @param {Object} packet - event packet with placeholders
* @param {Array} buffers - binary buffers to put in placeholder positions
* @return {Object} reconstructed packet
* @public
*/
function reconstructPacket(packet, buffers) {
packet.data = _reconstructPacket(packet.data, buffers);
delete packet.attachments; // no longer useful
return packet;
}
function _reconstructPacket(data, buffers) {
if (!data) return data;
if (data && data._placeholder === true) {
var isIndexValid = typeof data.num === "number" && data.num >= 0 && data.num < buffers.length;
if (isIndexValid) {
return buffers[data.num]; // appropriate buffer (should be natural order anyway)
} else {
throw new Error("illegal attachments");
}
} else if (Array.isArray(data)) {
for (var i = 0; i < data.length; i++) {
data[i] = _reconstructPacket(data[i], buffers);
}
} else if (_typeof(data) === "object") {
for (var key in data) {
if (Object.prototype.hasOwnProperty.call(data, key)) {
data[key] = _reconstructPacket(data[key], buffers);
}
}
}
return data;
}
/**
* These strings must not be used as event names, as they have a special meaning.
*/
var RESERVED_EVENTS$1 = ["connect",
// used on the client side
"connect_error",
// used on the client side
"disconnect",
// used on both sides
"disconnecting",
// used on the server side
"newListener",
// used by the Node.js EventEmitter
"removeListener" // used by the Node.js EventEmitter
];
/**
* Protocol version.
*
* @public
*/
var protocol = 5;
var PacketType;
(function (PacketType) {
PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
PacketType[PacketType["EVENT"] = 2] = "EVENT";
PacketType[PacketType["ACK"] = 3] = "ACK";
PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
})(PacketType || (PacketType = {}));
/**
* A socket.io Encoder instance
*/
var Encoder = /*#__PURE__*/function () {
/**
* Encoder constructor
*
* @param {function} replacer - custom replacer to pass down to JSON.parse
*/
function Encoder(replacer) {
this.replacer = replacer;
}
/**
* Encode a packet as a single string if non-binary, or as a
* buffer sequence, depending on packet type.
*
* @param {Object} obj - packet object
*/
var _proto = Encoder.prototype;
_proto.encode = function encode(obj) {
if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
if (hasBinary(obj)) {
return this.encodeAsBinary({
type: obj.type === PacketType.EVENT ? PacketType.BINARY_EVENT : PacketType.BINARY_ACK,
nsp: obj.nsp,
data: obj.data,
id: obj.id
});
}
}
return [this.encodeAsString(obj)];
}
/**
* Encode packet as string.
*/;
_proto.encodeAsString = function encodeAsString(obj) {
// first is type
var str = "" + obj.type;
// attachments if we have them
if (obj.type === PacketType.BINARY_EVENT || obj.type === PacketType.BINARY_ACK) {
str += obj.attachments + "-";
}
// if we have a namespace other than `/`
// we append it followed by a comma `,`
if (obj.nsp && "/" !== obj.nsp) {
str += obj.nsp + ",";
}
// immediately followed by the id
if (null != obj.id) {
str += obj.id;
}
// json data
if (null != obj.data) {
str += JSON.stringify(obj.data, this.replacer);
}
return str;
}
/**
* Encode packet as 'buffer sequence' by removing blobs, and
* deconstructing packet into object with placeholders and
* a list of buffers.
*/;
_proto.encodeAsBinary = function encodeAsBinary(obj) {
var deconstruction = deconstructPacket(obj);
var pack = this.encodeAsString(deconstruction.packet);
var buffers = deconstruction.buffers;
buffers.unshift(pack); // add packet info to beginning of data list
return buffers; // write all the buffers
};
return Encoder;
}();
/**
* A socket.io Decoder instance
*
* @return {Object} decoder
*/
var Decoder = /*#__PURE__*/function (_Emitter) {
/**
* Decoder constructor
*
* @param {function} reviver - custom reviver to pass down to JSON.stringify
*/
function Decoder(reviver) {
var _this;
_this = _Emitter.call(this) || this;
_this.reviver = reviver;
return _this;
}
/**
* Decodes an encoded packet string into packet JSON.
*
* @param {String} obj - encoded packet
*/
_inheritsLoose(Decoder, _Emitter);
var _proto2 = Decoder.prototype;
_proto2.add = function add(obj) {
var packet;
if (typeof obj === "string") {
if (this.reconstructor) {
throw new Error("got plaintext data when reconstructing a packet");
}
packet = this.decodeString(obj);
var isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
// binary packet's json
this.reconstructor = new BinaryReconstructor(packet);
// no attachments, labeled binary but no binary data to follow
if (packet.attachments === 0) {
_Emitter.prototype.emitReserved.call(this, "decoded", packet);
}
} else {
// non-binary full packet
_Emitter.prototype.emitReserved.call(this, "decoded", packet);
}
} else if (isBinary(obj) || obj.base64) {
// raw binary data
if (!this.reconstructor) {
throw new Error("got binary data when not reconstructing a packet");
} else {
packet = this.reconstructor.takeBinaryData(obj);
if (packet) {
// received final buffer
this.reconstructor = null;
_Emitter.prototype.emitReserved.call(this, "decoded", packet);
}
}
} else {
throw new Error("Unknown type: " + obj);
}
}
/**
* Decode a packet String (JSON data)
*
* @param {String} str
* @return {Object} packet
*/;
_proto2.decodeString = function decodeString(str) {
var i = 0;
// look up type
var p = {
type: Number(str.charAt(0))
};
if (PacketType[p.type] === undefined) {
throw new Error("unknown packet type " + p.type);
}
// look up attachments if type binary
if (p.type === PacketType.BINARY_EVENT || p.type === PacketType.BINARY_ACK) {
var start = i + 1;
while (str.charAt(++i) !== "-" && i != str.length) {}
var buf = str.substring(start, i);
if (buf != Number(buf) || str.charAt(i) !== "-") {
throw new Error("Illegal attachments");
}
p.attachments = Number(buf);
}
// look up namespace (if any)
if ("/" === str.charAt(i + 1)) {
var _start = i + 1;
while (++i) {
var c = str.charAt(i);
if ("," === c) break;
if (i === str.length) break;
}
p.nsp = str.substring(_start, i);
} else {
p.nsp = "/";
}
// look up id
var next = str.charAt(i + 1);
if ("" !== next && Number(next) == next) {
var _start2 = i + 1;
while (++i) {
var _c = str.charAt(i);
if (null == _c || Number(_c) != _c) {
--i;
break;
}
if (i === str.length) break;
}
p.id = Number(str.substring(_start2, i + 1));
}
// look up json data
if (str.charAt(++i)) {
var payload = this.tryParse(str.substr(i));
if (Decoder.isPayloadValid(p.type, payload)) {
p.data = payload;
} else {
throw new Error("invalid payload");
}
}
return p;
};
_proto2.tryParse = function tryParse(str) {
try {
return JSON.parse(str, this.reviver);
} catch (e) {
return false;
}
};
Decoder.isPayloadValid = function isPayloadValid(type, payload) {
switch (type) {
case PacketType.CONNECT:
return isObject(payload);
case PacketType.DISCONNECT:
return payload === undefined;
case PacketType.CONNECT_ERROR:
return typeof payload === "string" || isObject(payload);
case PacketType.EVENT:
case PacketType.BINARY_EVENT:
return Array.isArray(payload) && (typeof payload[0] === "number" || typeof payload[0] === "string" && RESERVED_EVENTS$1.indexOf(payload[0]) === -1);
case PacketType.ACK:
case PacketType.BINARY_ACK:
return Array.isArray(payload);
}
}
/**
* Deallocates a parser's resources
*/;
_proto2.destroy = function destroy() {
if (this.reconstructor) {
this.reconstructor.finishedReconstruction();
this.reconstructor = null;
}
};
return Decoder;
}(Emitter);
/**
* A manager of a binary event's 'buffer sequence'. Should
* be constructed whenever a packet of type BINARY_EVENT is
* decoded.
*
* @param {Object} packet
* @return {BinaryReconstructor} initialized reconstructor
*/
var BinaryReconstructor = /*#__PURE__*/function () {
function BinaryReconstructor(packet) {
this.packet = packet;
this.buffers = [];
this.reconPack = packet;
}
/**
* Method to be called when binary data received from connection
* after a BINARY_EVENT packet.
*
* @param {Buffer | ArrayBuffer} binData - the raw binary data received
* @return {null | Object} returns null if more binary data is expected or
* a reconstructed packet object if all buffers have been received.
*/
var _proto3 = BinaryReconstructor.prototype;
_proto3.takeBinaryData = function takeBinaryData(binData) {
this.buffers.push(binData);
if (this.buffers.length === this.reconPack.attachments) {
// done with buffer list
var packet = reconstructPacket(this.reconPack, this.buffers);
this.finishedReconstruction();
return packet;
}
return null;
}
/**
* Cleans up binary packet reconstruction variables.
*/;
_proto3.finishedReconstruction = function finishedReconstruction() {
this.reconPack = null;
this.buffers = [];
};
return BinaryReconstructor;
}();
function isNamespaceValid(nsp) {
return typeof nsp === "string";
}
// see https://caniuse.com/mdn-javascript_builtins_number_isinteger
var isInteger = Number.isInteger || function (value) {
return typeof value === "number" && isFinite(value) && Math.floor(value) === value;
};
function isAckIdValid(id) {
return id === undefined || isInteger(id);
}
// see https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript
function isObject(value) {
return Object.prototype.toString.call(value) === "[object Object]";
}
function isDataValid(type, payload) {
switch (type) {
case PacketType.CONNECT:
return payload === undefined || isObject(payload);
case PacketType.DISCONNECT:
return payload === undefined;
case PacketType.EVENT:
return Array.isArray(payload) && (typeof payload[0] === "number" || typeof payload[0] === "string" && RESERVED_EVENTS$1.indexOf(payload[0]) === -1);
case PacketType.ACK:
return Array.isArray(payload);
case PacketType.CONNECT_ERROR:
return typeof payload === "string" || isObject(payload);
default:
return false;
}
}
function isPacketValid(packet) {
return isNamespaceValid(packet.nsp) && isAckIdValid(packet.id) && isDataValid(packet.type, packet.data);
}
var parser = /*#__PURE__*/Object.freeze({
__proto__: null,
protocol: protocol,
get PacketType () { return PacketType; },
Encoder: Encoder,
Decoder: Decoder,
isPacketValid: isPacketValid
});
function on(obj, ev, fn) {
obj.on(ev, fn);
return function subDestroy() {
obj.off(ev, fn);
};
}
var debug$2 = debugModule("socket.io-client:socket"); // debug()
/**
* Internal events.
* These events can't be emitted by the user.
*/
var RESERVED_EVENTS = Object.freeze({
connect: 1,
connect_error: 1,
disconnect: 1,
disconnecting: 1,
// EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
newListener: 1,
removeListener: 1
});
/**
* A Socket is the fundamental class for interacting with the server.
*
* A Socket belongs to a certain Namespace (by default /) and uses an underlying {@link Manager} to communicate.
*
* @example
* const socket = io();
*
* socket.on("connect", () => {
* console.log("connected");
* });
*
* // send an event to the server
* socket.emit("foo", "bar");
*
* socket.on("foobar", () => {
* // an event was received from the server
* });
*
* // upon disconnection
* socket.on("disconnect", (reason) => {
* console.log(`disconnected due to ${reason}`);
* });
*/
var Socket = /*#__PURE__*/function (_Emitter) {
/**
* `Socket` constructor.
*/
function Socket(io, nsp, opts) {
var _this;
_this = _Emitter.call(this) || this;
/**
* Whether the socket is currently connected to the server.
*
* @example
* const socket = io();
*
* socket.on("connect", () => {
* console.log(socket.connected); // true
* });
*
* socket.on("disconnect", () => {
* console.log(socket.connected); // false
* });
*/
_this.connected = false;
/**
* Whether the connection state was recovered after a temporary disconnection. In that case, any missed packets will
* be transmitted by the server.
*/
_this.recovered = false;
/**
* Buffer for packets received before the CONNECT packet
*/
_this.receiveBuffer = [];
/**
* Buffer for packets that will be sent once the socket is connected
*/
_this.sendBuffer = [];
/**
* The queue of packets to be sent with retry in case of failure.
*
* Packets are sent one by one, each waiting for the server acknowledgement, in order to guarantee the delivery order.
* @private
*/
_this._queue = [];
/**
* A sequence to generate the ID of the {@link QueuedPacket}.
* @private
*/
_this._queueSeq = 0;
_this.ids = 0;
/**
* A map containing acknowledgement handlers.
*
* The `withError` attribute is used to differentiate handlers that accept an error as first argument:
*
* - `socket.emit("test", (err, value) => { ... })` with `ackTimeout` option
* - `socket.timeout(5000).emit("test", (err, value) => { ... })`
* - `const value = await socket.emitWithAck("test")`
*
* From those that don't:
*
* - `socket.emit("test", (value) => { ... });`
*
* In the first case, the handlers will be called with an error when:
*
* - the timeout is reached
* - the socket gets disconnected
*
* In the second case, the handlers will be simply discarded upon disconnection, since the client will never receive
* an acknowledgement from the server.
*
* @private
*/
_this.acks = {};
_this.flags = {};
_this.io = io;
_this.nsp = nsp;
if (opts && opts.auth) {
_this.auth = opts.auth;
}
_this._opts = _extends({}, opts);
if (_this.io._autoConnect) _this.open();
return _this;
}
/**
* Whether the socket is currently disconnected
*
* @example
* const socket = io();
*
* socket.on("connect", () => {
* console.log(socket.disconnected); // false
* });
*
* socket.on("disconnect", () => {
* console.log(socket.disconnected); // true
* });
*/
_inheritsLoose(Socket, _Emitter);
var _proto = Socket.prototype;
/**
* Subscribe to open, close and packet events
*
* @private
*/
_proto.subEvents = function subEvents() {
if (this.subs) return;
var io = this.io;
this.subs = [on(io, "open", this.onopen.bind(this)), on(io, "packet", this.onpacket.bind(this)), on(io, "error", this.onerror.bind(this)), on(io, "close", this.onclose.bind(this))];
}
/**
* Whether the Socket will try to reconnect when its Manager connects or reconnects.
*
* @example
* const socket = io();
*
* console.log(socket.active); // true
*
* socket.on("disconnect", (reason) => {
* if (reason === "io server disconnect") {
* // the disconnection was initiated by the server, you need to manually reconnect
* console.log(socket.active); // false
* }
* // else the socket will automatically try to reconnect
* console.log(socket.active); // true
* });
*/;
/**
* "Opens" the socket.
*
* @example
* const socket = io({
* autoConnect: false
* });
*
* socket.connect();
*/
_proto.connect = function connect() {
if (this.connected) return this;
this.subEvents();
if (!this.io["_reconnecting"]) this.io.open(); // ensure open
if ("open" === this.io._readyState) this.onopen();
return this;
}
/**
* Alias for {@link connect()}.
*/;
_proto.open = function open() {
return this.connect();
}
/**
* Sends a `message` event.
*
* This method mimics the WebSocket.send() method.
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
*
* @example
* socket.send("hello");
*
* // this is equivalent to
* socket.emit("message", "hello");
*
* @return self
*/;
_proto.send = function send() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
args.unshift("message");
this.emit.apply(this, args);
return this;
}
/**
* Override `emit`.
* If the event is in `events`, it's emitted normally.
*
* @example
* socket.emit("hello", "world");
*
* // all serializable datastructures are supported (no need to call JSON.stringify)
* socket.emit("hello", 1, "2", { 3: ["4"], 5: Uint8Array.from([6]) });
*
* // with an acknowledgement from the server
* socket.emit("hello", "world", (val) => {
* // ...
* });
*
* @return self
*/;
_proto.emit = function emit(ev) {
var _a, _b, _c;
if (RESERVED_EVENTS.hasOwnProperty(ev)) {
throw new Error('"' + ev.toString() + '" is a reserved event name');
}
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
args.unshift(ev);
if (this._opts.retries && !this.flags.fromQueue && !this.flags["volatile"]) {
this._addToQueue(args);
return this;
}
var packet = {
type: PacketType.EVENT,
data: args
};
packet.options = {};
packet.options.compress = this.flags.compress !== false;
// event ack callback
if ("function" === typeof args[args.length - 1]) {
var id = this.ids++;
debug$2("emitting packet with ack id %d", id);
var ack = args.pop();
this._registerAckCallback(id, ack);
packet.id = id;
}
var isTransportWritable = (_b = (_a = this.io.engine) === null || _a === void 0 ? void 0 : _a.transport) === null || _b === void 0 ? void 0 : _b.writable;
var isConnected = this.connected && !((_c = this.io.engine) === null || _c === void 0 ? void 0 : _c._hasPingExpired());
var discardPacket = this.flags["volatile"] && !isTransportWritable;
if (discardPacket) {
debug$2("discard packet as the transport is not currently writable");
} else if (isConnected) {
this.notifyOutgoingListeners(packet);
this.packet(packet);
} else {
this.sendBuffer.push(packet);
}
this.flags = {};
return this;
}
/**
* @private
*/;
_proto._registerAckCallback = function _registerAckCallback(id, ack) {
var _this2 = this;
var _a;
var timeout = (_a = this.flags.timeout) !== null && _a !== void 0 ? _a : this._opts.ackTimeout;
if (timeout === undefined) {
this.acks[id] = ack;
return;
}
// @ts-ignore
var timer = this.io.setTimeoutFn(function () {
delete _this2.acks[id];
for (var i = 0; i < _this2.sendBuffer.length; i++) {
if (_this2.sendBuffer[i].id === id) {
debug$2("removing packet with ack id %d from the buffer", id);
_this2.sendBuffer.splice(i, 1);
}
}
debug$2("event with ack id %d has timed out after %d ms", id, timeout);
ack.call(_this2, new Error("operation has timed out"));
}, timeout);
var fn = function fn() {
// @ts-ignore
_this2.io.clearTimeoutFn(timer);
for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
args[_key3] = arguments[_key3];
}
ack.apply(_this2, args);
};
fn.withError = true;
this.acks[id] = fn;
}
/**
* Emits an event and waits for an acknowledgement
*
* @example
* // without timeout
* const response = await socket.emitWithAck("hello", "world");
*
* // with a specific timeout
* try {
* const response = await socket.timeout(1000).emitWithAck("hello", "world");
* } catch (err) {
* // the server did not acknowledge the event in the given delay
* }
*
* @return a Promise that will be fulfilled when the server acknowledges the event
*/;
_proto.emitWithAck = function emitWithAck(ev) {
var _this3 = this;
for (var _len4 = arguments.length, args = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
args[_key4 - 1] = arguments[_key4];
}
return new Promise(function (resolve, reject) {
var fn = function fn(arg1, arg2) {
return arg1 ? reject(arg1) : resolve(arg2);
};
fn.withError = true;
args.push(fn);
_this3.emit.apply(_this3, [ev].concat(args));
});
}
/**
* Add the packet to the queue.
* @param args
* @private
*/;
_proto._addToQueue = function _addToQueue(args) {
var _this4 = this;
var ack;
if (typeof args[args.length - 1] === "function") {
ack = args.pop();
}
var packet = {
id: this._queueSeq++,
tryCount: 0,
pending: false,
args: args,
flags: _extends({
fromQueue: true
}, this.flags)
};
args.push(function (err) {
if (packet !== _this4._queue[0]) {
// the packet has already been acknowledged
return;
}
var hasError = err !== null;
if (hasError) {
if (packet.tryCount > _this4._opts.retries) {
debug$2("packet [%d] is discarded after %d tries", packet.id, packet.tryCount);
_this4._queue.shift();
if (ack) {
ack(err);
}
}
} else {
debug$2("packet [%d] was successfully sent", packet.id);
_this4._queue.shift();
if (ack) {
for (var _len5 = arguments.length, responseArgs = new Array(_len5 > 1 ? _len5 - 1 : 0), _key5 = 1; _key5 < _len5; _key5++) {
responseArgs[_key5 - 1] = arguments[_key5];
}
ack.apply(void 0, [null].concat(responseArgs));
}
}
packet.pending = false;
return _this4._drainQueue();
});
this._queue.push(packet);
this._drainQueue();
}
/**
* Send the first packet of the queue, and wait for an acknowledgement from the server.
* @param force - whether to resend a packet that has not been acknowledged yet
*
* @private
*/;
_proto._drainQueue = function _drainQueue() {
var force = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
debug$2("draining queue");
if (!this.connected || this._queue.length === 0) {
return;
}
var packet = this._queue[0];
if (packet.pending && !force) {
debug$2("packet [%d] has already been sent and is waiting for an ack", packet.id);
return;
}
packet.pending = true;
packet.tryCount++;
debug$2("sending packet [%d] (try n°%d)", packet.id, packet.tryCount);
this.flags = packet.flags;
this.emit.apply(this, packet.args);
}
/**
* Sends a packet.
*
* @param packet
* @private
*/;
_proto.packet = function packet(_packet) {
_packet.nsp = this.nsp;
this.io._packet(_packet);
}
/**
* Called upon engine `open`.
*
* @private
*/;
_proto.onopen = function onopen() {
var _this5 = this;
debug$2("transport is open - connecting");
if (typeof this.auth == "function") {
this.auth(function (data) {
_this5._sendConnectPacket(data);
});
} else {
this._sendConnectPacket(this.auth);
}
}
/**
* Sends a CONNECT packet to initiate the Socket.IO session.
*
* @param data
* @private
*/;
_proto._sendConnectPacket = function _sendConnectPacket(data) {
this.packet({
type: PacketType.CONNECT,
data: this._pid ? _extends({
pid: this._pid,
offset: this._lastOffset
}, data) : data
});
}
/**
* Called upon engine or manager `error`.
*
* @param err
* @private
*/;
_proto.onerror = function onerror(err) {
if (!this.connected) {
this.emitReserved("connect_error", err);
}
}
/**
* Called upon engine `close`.
*
* @param reason
* @param description
* @private
*/;
_proto.onclose = function onclose(reason, description) {
debug$2("close (%s)", reason);
this.connected = false;
delete this.id;
this.emitReserved("disconnect", reason, description);
this._clearAcks();
}
/**
* Clears the acknowledgement handlers upon disconnection, since the client will never receive an acknowledgement from
* the server.
*
* @private
*/;
_proto._clearAcks = function _clearAcks() {
var _this6 = this;
Object.keys(this.acks).forEach(function (id) {
var isBuffered = _this6.sendBuffer.some(function (packet) {
return String(packet.id) === id;
});
if (!isBuffered) {
// note: handlers that do not accept an error as first argument are ignored here
var ack = _this6.acks[id];
delete _this6.acks[id];
if (ack.withError) {
ack.call(_this6, new Error("socket has been disconnected"));
}
}
});
}
/**
* Called with socket packet.
*
* @param packet
* @private
*/;
_proto.onpacket = function onpacket(packet) {
var sameNamespace = packet.nsp === this.nsp;
if (!sameNamespace) return;
switch (packet.type) {
case PacketType.CONNECT:
if (packet.data && packet.data.sid) {
this.onconnect(packet.data.sid, packet.data.pid);
} else {
this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
}
break;
case PacketType.EVENT:
case PacketType.BINARY_EVENT:
this.onevent(packet);
break;
case PacketType.ACK:
case PacketType.BINARY_ACK:
this.onack(packet);
break;
case PacketType.DISCONNECT:
this.ondisconnect();
break;
case PacketType.CONNECT_ERROR:
this.destroy();
var err = new Error(packet.data.message);
// @ts-ignore
err.data = packet.data.data;
this.emitReserved("connect_error", err);
break;
}
}
/**
* Called upon a server event.
*
* @param packet
* @private
*/;
_proto.onevent = function onevent(packet) {
var args = packet.data || [];
debug$2("emitting event %j", args);
if (null != packet.id) {
debug$2("attaching ack callback to event");
args.push(this.ack(packet.id));
}
if (this.connected) {
this.emitEvent(args);
} else {
this.receiveBuffer.push(Object.freeze(args));
}
};
_proto.emitEvent = function emitEvent(args) {
if (this._anyListeners && this._anyListeners.length) {
var listeners = this._anyListeners.slice();
var _iterator = _createForOfIteratorHelper(listeners),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var listener = _step.value;
listener.apply(this, args);
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
}
_Emitter.prototype.emit.apply(this, args);
if (this._pid && args.length && typeof args[args.length - 1] === "string") {
this._lastOffset = args[args.length - 1];
}
}
/**
* Produces an ack callback to emit with an event.
*
* @private
*/;
_proto.ack = function ack(id) {
var self = this;
var sent = false;
return function () {
// prevent double callbacks
if (sent) return;
sent = true;
for (var _len6 = arguments.length, args = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {
args[_key6] = arguments[_key6];
}
debug$2("sending ack %j", args);
self.packet({
type: PacketType.ACK,
id: id,
data: args
});
};
}
/**
* Called upon a server acknowledgement.
*
* @param packet
* @private
*/;
_proto.onack = function onack(packet) {
var ack = this.acks[packet.id];
if (typeof ack !== "function") {
debug$2("bad ack %s", packet.id);
return;
}
delete this.acks[packet.id];
debug$2("calling ack %s with %j", packet.id, packet.data);
// @ts-ignore FIXME ack is incorrectly inferred as 'never'
if (ack.withError) {
packet.data.unshift(null);
}
// @ts-ignore
ack.apply(this, packet.data);
}
/**
* Called upon server connect.
*
* @private
*/;
_proto.onconnect = function onconnect(id, pid) {
debug$2("socket connected with id %s", id);
this.id = id;
this.recovered = pid && this._pid === pid;
this._pid = pid; // defined only if connection state recovery is enabled
this.connected = true;
this.emitBuffered();
this.emitReserved("connect");
this._drainQueue(true);
}
/**
* Emit buffered events (received and emitted).
*
* @private
*/;
_proto.emitBuffered = function emitBuffered() {
var _this7 = this;
this.receiveBuffer.forEach(function (args) {
return _this7.emitEvent(args);
});
this.receiveBuffer = [];
this.sendBuffer.forEach(function (packet) {
_this7.notifyOutgoingListeners(packet);
_this7.packet(packet);
});
this.sendBuffer = [];
}
/**
* Called upon server disconnect.
*
* @private
*/;
_proto.ondisconnect = function ondisconnect() {
debug$2("server disconnect (%s)", this.nsp);
this.destroy();
this.onclose("io server disconnect");
}
/**
* Called upon forced client/server side disconnections,
* this method ensures the manager stops tracking us and
* that reconnections don't get triggered for this.
*
* @private
*/;
_proto.destroy = function destroy() {
if (this.subs) {
// clean subscriptions to avoid reconnections
this.subs.forEach(function (subDestroy) {
return subDestroy();
});
this.subs = undefined;
}
this.io["_destroy"](this);
}
/**
* Disconnects the socket manually. In that case, the socket will not try to reconnect.
*
* If this is the last active Socket instance of the {@link Manager}, the low-level connection will be closed.
*
* @example
* const socket = io();
*
* socket.on("disconnect", (reason) => {
* // console.log(reason); prints "io client disconnect"
* });
*
* socket.disconnect();
*
* @return self
*/;
_proto.disconnect = function disconnect() {
if (this.connected) {
debug$2("performing disconnect (%s)", this.nsp);
this.packet({
type: PacketType.DISCONNECT
});
}
// remove socket from pool
this.destroy();
if (this.connected) {
// fire events
this.onclose("io client disconnect");
}
return this;
}
/**
* Alias for {@link disconnect()}.
*
* @return self
*/;
_proto.close = function close() {
return this.disconnect();
}
/**
* Sets the compress flag.
*
* @example
* socket.compress(false).emit("hello");
*
* @param compress - if `true`, compresses the sending data
* @return self
*/;
_proto.compress = function compress(_compress) {
this.flags.compress = _compress;
return this;
}
/**
* Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
* ready to send messages.
*
* @example
* socket.volatile.emit("hello"); // the server may or may not receive it
*
* @returns self
*/;
/**
* Sets a modifier for a subsequent event emission that the callback will be called with an error when the
* given number of milliseconds have elapsed without an acknowledgement from the server:
*
* @example
* socket.timeout(5000).emit("my-event", (err) => {
* if (err) {
* // the server did not acknowledge the event in the given delay
* }
* });
*
* @returns self
*/
_proto.timeout = function timeout(_timeout) {
this.flags.timeout = _timeout;
return this;
}
/**
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
* callback.
*
* @example
* socket.onAny((event, ...args) => {
* console.log(`got ${event}`);
* });
*
* @param listener
*/;
_proto.onAny = function onAny(listener) {
this._anyListeners = this._anyListeners || [];
this._anyListeners.push(listener);
return this;
}
/**
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
* callback. The listener is added to the beginning of the listeners array.
*
* @example
* socket.prependAny((event, ...args) => {
* console.log(`got event ${event}`);
* });
*
* @param listener
*/;
_proto.prependAny = function prependAny(listener) {
this._anyListeners = this._anyListeners || [];
this._anyListeners.unshift(listener);
return this;
}
/**
* Removes the listener that will be fired when any event is emitted.
*
* @example
* const catchAllListener = (event, ...args) => {
* console.log(`got event ${event}`);
* }
*
* socket.onAny(catchAllListener);
*
* // remove a specific listener
* socket.offAny(catchAllListener);
*
* // or remove all listeners
* socket.offAny();
*
* @param listener
*/;
_proto.offAny = function offAny(listener) {
if (!this._anyListeners) {
return this;
}
if (listener) {
var listeners = this._anyListeners;
for (var i = 0; i < listeners.length; i++) {
if (listener === listeners[i]) {
listeners.splice(i, 1);
return this;
}
}
} else {
this._anyListeners = [];
}
return this;
}
/**
* Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
* e.g. to remove listeners.
*/;
_proto.listenersAny = function listenersAny() {
return this._anyListeners || [];
}
/**
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
* callback.
*
* Note: acknowledgements sent to the server are not included.
*
* @example
* socket.onAnyOutgoing((event, ...args) => {
* console.log(`sent event ${event}`);
* });
*
* @param listener
*/;
_proto.onAnyOutgoing = function onAnyOutgoing(listener) {
this._anyOutgoingListeners = this._anyOutgoingListeners || [];
this._anyOutgoingListeners.push(listener);
return this;
}
/**
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
* callback. The listener is added to the beginning of the listeners array.
*
* Note: acknowledgements sent to the server are not included.
*
* @example
* socket.prependAnyOutgoing((event, ...args) => {
* console.log(`sent event ${event}`);
* });
*
* @param listener
*/;
_proto.prependAnyOutgoing = function prependAnyOutgoing(listener) {
this._anyOutgoingListeners = this._anyOutgoingListeners || [];
this._anyOutgoingListeners.unshift(listener);
return this;
}
/**
* Removes the listener that will be fired when any event is emitted.
*
* @example
* const catchAllListener = (event, ...args) => {
* console.log(`sent event ${event}`);
* }
*
* socket.onAnyOutgoing(catchAllListener);
*
* // remove a specific listener
* socket.offAnyOutgoing(catchAllListener);
*
* // or remove all listeners
* socket.offAnyOutgoing();
*
* @param [listener] - the catch-all listener (optional)
*/;
_proto.offAnyOutgoing = function offAnyOutgoing(listener) {
if (!this._anyOutgoingListeners) {
return this;
}
if (listener) {
var listeners = this._anyOutgoingListeners;
for (var i = 0; i < listeners.length; i++) {
if (listener === listeners[i]) {
listeners.splice(i, 1);
return this;
}
}
} else {
this._anyOutgoingListeners = [];
}
return this;
}
/**
* Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
* e.g. to remove listeners.
*/;
_proto.listenersAnyOutgoing = function listenersAnyOutgoing() {
return this._anyOutgoingListeners || [];
}
/**
* Notify the listeners for each packet sent
*
* @param packet
*
* @private
*/;
_proto.notifyOutgoingListeners = function notifyOutgoingListeners(packet) {
if (this._anyOutgoingListeners && this._anyOutgoingListeners.length) {
var listeners = this._anyOutgoingListeners.slice();
var _iterator2 = _createForOfIteratorHelper(listeners),
_step2;
try {
for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
var listener = _step2.value;
listener.apply(this, packet.data);
}
} catch (err) {
_iterator2.e(err);
} finally {
_iterator2.f();
}
}
};
return _createClass(Socket, [{
key: "disconnected",
get: function get() {
return !this.connected;
}
}, {
key: "active",
get: function get() {
return !!this.subs;
}
}, {
key: "volatile",
get: function get() {
this.flags["volatile"] = true;
return this;
}
}]);
}(Emitter);
/**
* Initialize backoff timer with `opts`.
*
* - `min` initial timeout in milliseconds [100]
* - `max` max timeout [10000]
* - `jitter` [0]
* - `factor` [2]
*
* @param {Object} opts
* @api public
*/
function Backoff(opts) {
opts = opts || {};
this.ms = opts.min || 100;
this.max = opts.max || 10000;
this.factor = opts.factor || 2;
this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
this.attempts = 0;
}
/**
* Return the backoff duration.
*
* @return {Number}
* @api public
*/
Backoff.prototype.duration = function () {
var ms = this.ms * Math.pow(this.factor, this.attempts++);
if (this.jitter) {
var rand = Math.random();
var deviation = Math.floor(rand * this.jitter * ms);
ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
}
return Math.min(ms, this.max) | 0;
};
/**
* Reset the number of attempts.
*
* @api public
*/
Backoff.prototype.reset = function () {
this.attempts = 0;
};
/**
* Set the minimum duration
*
* @api public
*/
Backoff.prototype.setMin = function (min) {
this.ms = min;
};
/**
* Set the maximum duration
*
* @api public
*/
Backoff.prototype.setMax = function (max) {
this.max = max;
};
/**
* Set the jitter
*
* @api public
*/
Backoff.prototype.setJitter = function (jitter) {
this.jitter = jitter;
};
var debug$1 = debugModule("socket.io-client:manager"); // debug()
var Manager = /*#__PURE__*/function (_Emitter) {
function Manager(uri, opts) {
var _this;
var _a;
_this = _Emitter.call(this) || this;
_this.nsps = {};
_this.subs = [];
if (uri && "object" === _typeof(uri)) {
opts = uri;
uri = undefined;
}
opts = opts || {};
opts.path = opts.path || "/socket.io";
_this.opts = opts;
installTimerFunctions(_this, opts);
_this.reconnection(opts.reconnection !== false);
_this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
_this.reconnectionDelay(opts.reconnectionDelay || 1000);
_this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
_this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);
_this.backoff = new Backoff({
min: _this.reconnectionDelay(),
max: _this.reconnectionDelayMax(),
jitter: _this.randomizationFactor()
});
_this.timeout(null == opts.timeout ? 20000 : opts.timeout);
_this._readyState = "closed";
_this.uri = uri;
var _parser = opts.parser || parser;
_this.encoder = new _parser.Encoder();
_this.decoder = new _parser.Decoder();
_this._autoConnect = opts.autoConnect !== false;
if (_this._autoConnect) _this.open();
return _this;
}
_inheritsLoose(Manager, _Emitter);
var _proto = Manager.prototype;
_proto.reconnection = function reconnection(v) {
if (!arguments.length) return this._reconnection;
this._reconnection = !!v;
if (!v) {
this.skipReconnect = true;
}
return this;
};
_proto.reconnectionAttempts = function reconnectionAttempts(v) {
if (v === undefined) return this._reconnectionAttempts;
this._reconnectionAttempts = v;
return this;
};
_proto.reconnectionDelay = function reconnectionDelay(v) {
var _a;
if (v === undefined) return this._reconnectionDelay;
this._reconnectionDelay = v;
(_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
return this;
};
_proto.randomizationFactor = function randomizationFactor(v) {
var _a;
if (v === undefined) return this._randomizationFactor;
this._randomizationFactor = v;
(_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
return this;
};
_proto.reconnectionDelayMax = function reconnectionDelayMax(v) {
var _a;
if (v === undefined) return this._reconnectionDelayMax;
this._reconnectionDelayMax = v;
(_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
return this;
};
_proto.timeout = function timeout(v) {
if (!arguments.length) return this._timeout;
this._timeout = v;
return this;
}
/**
* Starts trying to reconnect if reconnection is enabled and we have not
* started reconnecting yet
*
* @private
*/;
_proto.maybeReconnectOnOpen = function maybeReconnectOnOpen() {
// Only try to reconnect if it's the first time we're connecting
if (!this._reconnecting && this._reconnection && this.backoff.attempts === 0) {
// keeps reconnection from firing twice for the same reconnection loop
this.reconnect();
}
}
/**
* Sets the current transport `socket`.
*
* @param {Function} fn - optional, callback
* @return self
* @public
*/;
_proto.open = function open(fn) {
var _this2 = this;
debug$1("readyState %s", this._readyState);
if (~this._readyState.indexOf("open")) return this;
debug$1("opening %s", this.uri);
this.engine = new Socket$1(this.uri, this.opts);
var socket = this.engine;
var self = this;
this._readyState = "opening";
this.skipReconnect = false;
// emit `open`
var openSubDestroy = on(socket, "open", function () {
self.onopen();
fn && fn();
});
var onError = function onError(err) {
debug$1("error");
_this2.cleanup();
_this2._readyState = "closed";
_this2.emitReserved("error", err);
if (fn) {
fn(err);
} else {
// Only do this if there is no fn to handle the error
_this2.maybeReconnectOnOpen();
}
};
// emit `error`
var errorSub = on(socket, "error", onError);
if (false !== this._timeout) {
var timeout = this._timeout;
debug$1("connect attempt will timeout after %d", timeout);
// set timer
var timer = this.setTimeoutFn(function () {
debug$1("connect attempt timed out after %d", timeout);
openSubDestroy();
onError(new Error("timeout"));
socket.close();
}, timeout);
if (this.opts.autoUnref) {
timer.unref();
}
this.subs.push(function () {
_this2.clearTimeoutFn(timer);
});
}
this.subs.push(openSubDestroy);
this.subs.push(errorSub);
return this;
}
/**
* Alias for open()
*
* @return self
* @public
*/;
_proto.connect = function connect(fn) {
return this.open(fn);
}
/**
* Called upon transport open.
*
* @private
*/;
_proto.onopen = function onopen() {
debug$1("open");
// clear old subs
this.cleanup();
// mark as open
this._readyState = "open";
this.emitReserved("open");
// add new subs
var socket = this.engine;
this.subs.push(on(socket, "ping", this.onping.bind(this)), on(socket, "data", this.ondata.bind(this)), on(socket, "error", this.onerror.bind(this)), on(socket, "close", this.onclose.bind(this)),
// @ts-ignore
on(this.decoder, "decoded", this.ondecoded.bind(this)));
}
/**
* Called upon a ping.
*
* @private
*/;
_proto.onping = function onping() {
this.emitReserved("ping");
}
/**
* Called with data.
*
* @private
*/;
_proto.ondata = function ondata(data) {
try {
this.decoder.add(data);
} catch (e) {
this.onclose("parse error", e);
}
}
/**
* Called when parser fully decodes a packet.
*
* @private
*/;
_proto.ondecoded = function ondecoded(packet) {
var _this3 = this;
// the nextTick call prevents an exception in a user-provided event listener from triggering a disconnection due to a "parse error"
nextTick(function () {
_this3.emitReserved("packet", packet);
}, this.setTimeoutFn);
}
/**
* Called upon socket error.
*
* @private
*/;
_proto.onerror = function onerror(err) {
debug$1("error", err);
this.emitReserved("error", err);
}
/**
* Creates a new socket for the given `nsp`.
*
* @return {Socket}
* @public
*/;
_proto.socket = function socket(nsp, opts) {
var socket = this.nsps[nsp];
if (!socket) {
socket = new Socket(this, nsp, opts);
this.nsps[nsp] = socket;
} else if (this._autoConnect && !socket.active) {
socket.connect();
}
return socket;
}
/**
* Called upon a socket close.
*
* @param socket
* @private
*/;
_proto._destroy = function _destroy(socket) {
var nsps = Object.keys(this.nsps);
for (var _i = 0, _nsps = nsps; _i < _nsps.length; _i++) {
var nsp = _nsps[_i];
var _socket = this.nsps[nsp];
if (_socket.active) {
debug$1("socket %s is still active, skipping close", nsp);
return;
}
}
this._close();
}
/**
* Writes a packet.
*
* @param packet
* @private
*/;
_proto._packet = function _packet(packet) {
debug$1("writing packet %j", packet);
var encodedPackets = this.encoder.encode(packet);
for (var i = 0; i < encodedPackets.length; i++) {
this.engine.write(encodedPackets[i], packet.options);
}
}
/**
* Clean up transport subscriptions and packet buffer.
*
* @private
*/;
_proto.cleanup = function cleanup() {
debug$1("cleanup");
this.subs.forEach(function (subDestroy) {
return subDestroy();
});
this.subs.length = 0;
this.decoder.destroy();
}
/**
* Close the current socket.
*
* @private
*/;
_proto._close = function _close() {
debug$1("disconnect");
this.skipReconnect = true;
this._reconnecting = false;
this.onclose("forced close");
}
/**
* Alias for close()
*
* @private
*/;
_proto.disconnect = function disconnect() {
return this._close();
}
/**
* Called when:
*
* - the low-level engine is closed
* - the parser encountered a badly formatted packet
* - all sockets are disconnected
*
* @private
*/;
_proto.onclose = function onclose(reason, description) {
var _a;
debug$1("closed due to %s", reason);
this.cleanup();
(_a = this.engine) === null || _a === void 0 ? void 0 : _a.close();
this.backoff.reset();
this._readyState = "closed";
this.emitReserved("close", reason, description);
if (this._reconnection && !this.skipReconnect) {
this.reconnect();
}
}
/**
* Attempt a reconnection.
*
* @private
*/;
_proto.reconnect = function reconnect() {
var _this4 = this;
if (this._reconnecting || this.skipReconnect) return this;
var self = this;
if (this.backoff.attempts >= this._reconnectionAttempts) {
debug$1("reconnect failed");
this.backoff.reset();
this.emitReserved("reconnect_failed");
this._reconnecting = false;
} else {
var delay = this.backoff.duration();
debug$1("will wait %dms before reconnect attempt", delay);
this._reconnecting = true;
var timer = this.setTimeoutFn(function () {
if (self.skipReconnect) return;
debug$1("attempting reconnect");
_this4.emitReserved("reconnect_attempt", self.backoff.attempts);
// check again for the case socket closed in above events
if (self.skipReconnect) return;
self.open(function (err) {
if (err) {
debug$1("reconnect attempt error");
self._reconnecting = false;
self.reconnect();
_this4.emitReserved("reconnect_error", err);
} else {
debug$1("reconnect success");
self.onreconnect();
}
});
}, delay);
if (this.opts.autoUnref) {
timer.unref();
}
this.subs.push(function () {
_this4.clearTimeoutFn(timer);
});
}
}
/**
* Called upon successful reconnect.
*
* @private
*/;
_proto.onreconnect = function onreconnect() {
var attempt = this.backoff.attempts;
this._reconnecting = false;
this.backoff.reset();
this.emitReserved("reconnect", attempt);
};
return Manager;
}(Emitter);
var debug = debugModule("socket.io-client"); // debug()
/**
* Managers cache.
*/
var cache = {};
function lookup(uri, opts) {
if (_typeof(uri) === "object") {
opts = uri;
uri = undefined;
}
opts = opts || {};
var parsed = url(uri, opts.path || "/socket.io");
var source = parsed.source;
var id = parsed.id;
var path = parsed.path;
var sameNamespace = cache[id] && path in cache[id]["nsps"];
var newConnection = opts.forceNew || opts["force new connection"] || false === opts.multiplex || sameNamespace;
var io;
if (newConnection) {
debug("ignoring socket cache for %s", source);
io = new Manager(source, opts);
} else {
if (!cache[id]) {
debug("new io instance for %s", source);
cache[id] = new Manager(source, opts);
}
io = cache[id];
}
if (parsed.query && !opts.query) {
opts.query = parsed.queryKey;
}
return io.socket(parsed.path, opts);
}
// so that "lookup" can be used both as a function (e.g. `io(...)`) and as a
// namespace (e.g. `io.connect(...)`), for backward compatibility
_extends(lookup, {
Manager: Manager,
Socket: Socket,
io: lookup,
connect: lookup
});
return lookup;
}));
//# sourceMappingURL=socket.io.js.map