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assets/socket.io/dist/namespace.js
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292
assets/socket.io/dist/namespace.js
vendored
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Namespace = exports.RESERVED_EVENTS = void 0;
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const socket_1 = require("./socket");
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const typed_events_1 = require("./typed-events");
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const debug_1 = __importDefault(require("debug"));
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const broadcast_operator_1 = require("./broadcast-operator");
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const debug = (0, debug_1.default)("socket.io:namespace");
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exports.RESERVED_EVENTS = new Set(["connect", "connection", "new_namespace"]);
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class Namespace extends typed_events_1.StrictEventEmitter {
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/**
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* Namespace constructor.
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*
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* @param server instance
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* @param name
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*/
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constructor(server, name) {
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super();
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this.sockets = new Map();
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/** @private */
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this._fns = [];
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/** @private */
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this._ids = 0;
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this.server = server;
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this.name = name;
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this._initAdapter();
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}
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/**
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* Initializes the `Adapter` for this nsp.
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* Run upon changing adapter by `Server#adapter`
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* in addition to the constructor.
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*
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* @private
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*/
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_initAdapter() {
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// @ts-ignore
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this.adapter = new (this.server.adapter())(this);
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}
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/**
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* Sets up namespace middleware.
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*
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* @return self
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* @public
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*/
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use(fn) {
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this._fns.push(fn);
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return this;
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}
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/**
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* Executes the middleware for an incoming client.
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*
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* @param socket - the socket that will get added
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* @param fn - last fn call in the middleware
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* @private
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*/
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run(socket, fn) {
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const fns = this._fns.slice(0);
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if (!fns.length)
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return fn(null);
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function run(i) {
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fns[i](socket, function (err) {
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// upon error, short-circuit
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if (err)
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return fn(err);
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// if no middleware left, summon callback
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if (!fns[i + 1])
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return fn(null);
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// go on to next
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run(i + 1);
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});
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}
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run(0);
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}
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/**
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* Targets a room when emitting.
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*
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* @param room
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* @return self
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* @public
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*/
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to(room) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).to(room);
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}
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/**
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* Targets a room when emitting.
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*
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* @param room
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* @return self
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* @public
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*/
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in(room) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).in(room);
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}
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/**
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* Excludes a room when emitting.
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*
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* @param room
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* @return self
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* @public
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*/
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except(room) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).except(room);
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}
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/**
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* Adds a new client.
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*
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* @return {Socket}
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* @private
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*/
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_add(client, query, fn) {
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debug("adding socket to nsp %s", this.name);
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const socket = new socket_1.Socket(this, client, query);
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this.run(socket, (err) => {
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process.nextTick(() => {
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if ("open" == client.conn.readyState) {
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if (err) {
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if (client.conn.protocol === 3) {
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return socket._error(err.data || err.message);
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}
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else {
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return socket._error({
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message: err.message,
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data: err.data,
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});
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}
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}
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// track socket
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this.sockets.set(socket.id, socket);
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// it's paramount that the internal `onconnect` logic
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// fires before user-set events to prevent state order
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// violations (such as a disconnection before the connection
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// logic is complete)
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socket._onconnect();
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if (fn)
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fn();
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// fire user-set events
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this.emitReserved("connect", socket);
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this.emitReserved("connection", socket);
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}
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else {
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debug("next called after client was closed - ignoring socket");
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}
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});
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});
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return socket;
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}
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/**
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* Removes a client. Called by each `Socket`.
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*
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* @private
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*/
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_remove(socket) {
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if (this.sockets.has(socket.id)) {
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this.sockets.delete(socket.id);
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}
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else {
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debug("ignoring remove for %s", socket.id);
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}
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}
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/**
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* Emits to all clients.
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*
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* @return Always true
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* @public
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*/
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emit(ev, ...args) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).emit(ev, ...args);
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}
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/**
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* Sends a `message` event to all clients.
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*
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* @return self
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* @public
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*/
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send(...args) {
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this.emit("message", ...args);
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return this;
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}
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/**
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* Sends a `message` event to all clients.
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*
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* @return self
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* @public
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*/
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write(...args) {
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this.emit("message", ...args);
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return this;
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}
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/**
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* Emit a packet to other Socket.IO servers
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*
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* @param ev - the event name
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* @param args - an array of arguments, which may include an acknowledgement callback at the end
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* @public
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*/
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serverSideEmit(ev, ...args) {
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if (exports.RESERVED_EVENTS.has(ev)) {
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throw new Error(`"${ev}" is a reserved event name`);
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}
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args.unshift(ev);
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this.adapter.serverSideEmit(args);
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return true;
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}
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/**
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* Called when a packet is received from another Socket.IO server
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*
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* @param args - an array of arguments, which may include an acknowledgement callback at the end
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*
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* @private
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*/
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_onServerSideEmit(args) {
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super.emitUntyped.apply(this, args);
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}
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/**
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* Gets a list of clients.
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*
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* @return self
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* @public
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*/
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allSockets() {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).allSockets();
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}
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/**
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* Sets the compress flag.
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*
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* @param compress - if `true`, compresses the sending data
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* @return self
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* @public
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*/
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compress(compress) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).compress(compress);
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}
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/**
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* Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
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* receive messages (because of network slowness or other issues, or because they’re connected through long polling
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* and is in the middle of a request-response cycle).
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*
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* @return self
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* @public
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*/
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get volatile() {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).volatile;
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}
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/**
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* Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
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*
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* @return self
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* @public
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*/
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get local() {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).local;
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}
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/**
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* Returns the matching socket instances
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*
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* @public
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*/
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fetchSockets() {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).fetchSockets();
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}
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/**
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* Makes the matching socket instances join the specified rooms
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*
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* @param room
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* @public
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*/
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socketsJoin(room) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).socketsJoin(room);
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}
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/**
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* Makes the matching socket instances leave the specified rooms
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*
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* @param room
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* @public
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*/
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socketsLeave(room) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).socketsLeave(room);
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}
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/**
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* Makes the matching socket instances disconnect
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*
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* @param close - whether to close the underlying connection
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* @public
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*/
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disconnectSockets(close = false) {
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return new broadcast_operator_1.BroadcastOperator(this.adapter).disconnectSockets(close);
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}
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}
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exports.Namespace = Namespace;
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