socket.io
Version:
node.js realtime framework server
1,605 lines (1,565 loc) • 154 kB
JavaScript
/*!
* 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 () {
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e: function (r) {
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},
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]");
} catch (n) {
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):\/\/)?(