From ec544bd23358f8817f80769e0aefa6304c92c4a6 Mon Sep 17 00:00:00 2001 From: Dzejkobik007 Date: Sun, 4 Jun 2023 23:14:07 +0200 Subject: [PATCH] First Commit --- .gitignore | 1 + app.js | 253 ++ package.json | 18 + public/img/add-sharp-white.svg | 1 + public/img/arrow-down-white.svg | 1 + public/js/siofu-client.js | 771 +++++ public/js/socket.io.js | 4747 +++++++++++++++++++++++++++++++ 7 files changed, 5792 insertions(+) create mode 100644 .gitignore create mode 100644 app.js create mode 100644 package.json create mode 100644 public/img/add-sharp-white.svg create mode 100644 public/img/arrow-down-white.svg create mode 100644 public/js/siofu-client.js create mode 100644 public/js/socket.io.js diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b512c09 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules \ No newline at end of file diff --git a/app.js b/app.js new file mode 100644 index 0000000..2cef2ff --- /dev/null +++ b/app.js @@ -0,0 +1,253 @@ +port = 8000; + +// Require the libraries: +var SocketIOFileUpload = require('socketio-file-upload'), + socketio = require('socket.io'), + express = require('express'); + +const app = express() + .use(SocketIOFileUpload.router) + .use(express.static(__dirname + "/public")); +const http = require('http'); +const server = http.createServer(app); +const { Server } = require("socket.io"); +const io = new Server(server); + +// Make your Express server: + +app.get('/', (req, res) => { + res.sendFile(__dirname + "/forms/select.html"); +}) + +app.get('/upload', (req, res) => { + res.sendFile(__dirname + "/forms/upload.html"); +}) + +app.get('/download', (req, res) => { + res.sendFile(__dirname + "/forms/download.html"); +}) + +app.get('/download/:hash', (req, res) => { + mac = req.params.hash; + res.send("sdadsd"); +}) + +app.get('/upload', (req, res) => { + // parsedUrl = req.socket.handshake.headers.referer.split(req.socket.handshake.headers.host, 2); + // console.log(parsedUrl[0]); + // console.log(parsedUrl[1]); + + // Make an instance of SocketIOFileUpload and listen on this socket: + res.send("upload"); +}) + + + +// Start up Socket.IO: +// var io = new socketio.Server(app.listen(port)); +io.sockets.on("connection", function(socket){ + if(socket.handshake.url.startsWith("/socket.io")) { + var uploader = new SocketIOFileUpload(); + uploader.dir = "uploads"; + + uploader.uploadValidator = function(event, callback){ + // asynchronous operations allowed here; when done, + console.log(event); + if (false) { + callback(true); + } else { + callback(false); + } + }; + + uploader.listen(socket); + + // Do something when a file is saved: + uploader.on("saved", function(event){ + console.log(event.file); + }); + // Error handler: + uploader.on("error", function(event){ + console.log("Error from uploader", event); + }); + } +}); + + +app.use(function (req, res, next) { + res.status(404); + console.log(req.query); + ans = { error: 'Not found', code: 404 } + if (req.query.format == "xml"){ + res.set('Content-Type', 'text/xml'); + res.send(xml({xml: ans})); + } else if (req.query.format == "csv") { + res.send(ans.error); + } else if (req.query.format == "json") { + res.json(ans); + } + + // respond with html page + if (req.accepts('html') && !req.url.startsWith("/api")) { + res.send('

404 Not found

'); + return; + } + + // respond with json + if (req.accepts('json')) { + res.json({ error: 'Not found', code: 404 }); + return; + } + + // default to plain-text. send() + res.send('404'); +}); + +server.listen(port, () => { + console.log('listening on *:8000'); +}); + + +// https://stackoverflow.com/questions/1349404/generate-random-string-characters-in-javascript +function makeid(length) { + let result = ''; + const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; + const charactersLength = characters.length; + let counter = 0; + while (counter < length) { + result += characters.charAt(Math.floor(Math.random() * charactersLength)); + counter += 1; + } + return result; +} + + +// const express = require('express'); +// const app = express() +// const server = require('http').createServer(app); +// var siofu = require("socketio-file-upload"); +// const port = process.env.PORT || 8080; +// const io = require('socket.io')(server); +// const fs = require("fs") + +// app.use(express.static("public")); + + +// io.on("connection", (socket) => { +// console.log("req") +// var uploader = new siofu(); +// uploader.dir = "./uploads"; +// uploader.listen(socket); +// }); + +// app.listen(8000, () => { +// console.log(`Server started...`); +// }); + + +// server.listen(port, function() { +// console.log(`Listening on port ${port}`); +// }); + + +// const express = require('express'); +// const app = express(); +// const fs = require("fs") +// const s = require("socket.io"); + +// const io = new s.Server(); + +// io.on("connection", (socket) => { +// socket.on("upload", (file, callback) => { +// console.log(file); // + +// // save the content to the disk, for example +// fs.writeFile("./tmp/upload", file, (err) => { +// callback({ message: err ? "failure" : "success" }); +// }); +// }); +// }); + +// // const multer = require("multer"); + +// // const date = Date.now(); + +// // const storage = multer.diskStorage({ +// // destination: function (req, file, cb) { +// // if(req.body.name == "test"){ +// // storage.error("Already Exists"); +// // } +// // const nameFolder = date + "-" +req.body.name; +// // const dirRep = nameFolder.replace(/\s/g, ''); +// // const folderPath = "lessons/"+dirRep+"/"; +// // fs.mkdirSync(folderPath, {recursive: true}) +// // cb(null, folderPath) +// // }, +// // filename: function (req, file, cb) { +// // const filename = Date.now() + "-" + file.originalname; +// // const rep = filename.replace(/\s/g, '') +// // cb(null, rep) +// // }, +// // }); + +// // const upload = multer({ +// // storage: storage, +// // limits: { +// // fileSize: 50000000000 +// // } +// // }); +// app.use(express.urlencoded({ extended: true })); +// app.use(express.static('public')); + +// app.get('/download/:hash', (req, res) => { + +// }) + +// // app.post("/upload", upload.array("files"), uploadFiles); + +// // function uploadFiles(req, res) { +// // console.log(req.body); +// // console.log(req.files); +// // res.json({ message: "Successfully uploaded files" }); +// // } + +// function checkPerm(req, res) { +// if(req.body.name == "kuba"){ +// throw("Invalid name") +// }else { +// return req, res +// } +// } + +// app.use(function (req, res, next) { +// res.status(404); +// console.log(req.query); +// ans = { error: 'Not found', code: 404 } +// if (req.query.format == "xml"){ +// res.set('Content-Type', 'text/xml'); +// res.send(xml({xml: ans})); +// } else if (req.query.format == "csv") { +// res.send(ans.error); +// } else if (req.query.format == "json") { +// res.json(ans); +// } + +// // respond with html page +// if (req.accepts('html') && !req.url.startsWith("/api")) { +// res.send('

404 Not found

'); +// return; +// } + +// // respond with json +// if (req.accepts('json')) { +// res.json({ error: 'Not found', code: 404 }); +// return; +// } + +// // default to plain-text. send() +// res.send('404'); +// }); + +// app.listen(5000, () => { +// console.log(`Server started...`); +// }); \ No newline at end of file diff --git a/package.json b/package.json new file mode 100644 index 0000000..855a98e --- /dev/null +++ b/package.json @@ -0,0 +1,18 @@ +{ + "name": "kakubovna", + "version": "1.0.0", + "description": "", + "main": "app.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "author": "Dzejkobik", + "license": "MIT", + "dependencies": { + "express": "^4.18.2", + "multer": "^1.4.5-lts.1", + "socket.io": "^4.6.2", + "socketio-file-upload": "^0.7.3", + "sqlite3": "^5.1.6" + } +} diff --git a/public/img/add-sharp-white.svg b/public/img/add-sharp-white.svg new file mode 100644 index 0000000..86d0034 --- /dev/null +++ b/public/img/add-sharp-white.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/public/img/arrow-down-white.svg b/public/img/arrow-down-white.svg new file mode 100644 index 0000000..8435e61 --- /dev/null +++ b/public/img/arrow-down-white.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/public/js/siofu-client.js b/public/js/siofu-client.js new file mode 100644 index 0000000..305781c --- /dev/null +++ b/public/js/siofu-client.js @@ -0,0 +1,771 @@ +/* + * Copyright (C) 2015 Shane Carr and others + * X11 License + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the names of the authors or copyright + * holders shall not be used in advertising or otherwise to promote the sale, + * use or other dealings in this Software without prior written authorization + * from the authors or copyright holders. + */ + +// Do not check function indentation because this is intentionally ignored in order to preserve history in git. +/* eslint-disable indent */ + +/* + * A client-side JavaScript object to handle file uploads to a Node.JS server + * via Socket.IO. + * @implements EventTarget + * @param {SocketIO} socket The current Socket.IO connection. + */ +(function (scope, name, factory) { + /* eslint-disable no-undef */ + if (typeof define === "function" && define.amd) { + define([], factory); + } + else if (typeof module === "object" && module.exports) { + module.exports = factory(); + } + else { + scope[name] = factory(); + } + /* eslint-enable no-undef */ +}(this, "SocketIOFileUpload", function () { + return function (socket, options) { + "use strict"; + + var self = this; // avoids context issues + + // Check for compatibility + if (!window.File || !window.FileReader) { + throw new Error("Socket.IO File Upload: Browser Not Supported"); + } + + if ( !window.siofu_global ) { + window.siofu_global = { + instances: 0, + downloads: 0 + }; + } + + // Private and Public Variables + var callbacks = {}, + uploadedFiles = {}, + chunkCallbacks = {}, + readyCallbacks = {}, + communicators = {}; + + var _getOption = function (key, defaultValue) { + if(!options) { + return defaultValue; + } + return options[key] || defaultValue; + }; + + self.fileInputElementId = "siofu_input_"+window.siofu_global.instances++; + self.resetFileInputs = true; + self.useText = _getOption("useText", false); + self.serializedOctets = _getOption("serializedOctets", false); + self.useBuffer = _getOption("useBuffer", true); + self.chunkSize = _getOption("chunkSize", 1024 * 100); // 100kb default chunk size + self.topicName = _getOption("topicName", "siofu"); + + /** + * WrapData allow you to wrap the Siofu messages into a predefined format. + * You can then easily use Siofu packages even in strongly typed topic. + * wrapData can be a boolean or an object. It is false by default. + * If wrapData is true it will allow you to send all the messages to only one topic by wrapping the siofu actions and messages. + * + * ex: + { + action: 'complete', + message: { + id: id, + success: success, + detail: fileInfo.clientDetail + } + } + * + * If wrapData is an object constituted of two mandatory key and one optional: + * wrapKey and unwrapKey (mandatory): Corresponding to the key used to wrap the siofu data and message + * additionalData (optional): Corresponding to the data to send along with file data + * + * ex: + * if wrapData = { + wrapKey: { + action: 'actionType', + message: 'data' + }, + unwrapKey: { + action: 'actionType', + message: 'message' + }, + additionalData: { + acknowledgement: true + } + } + * When Siofu will send for example a complete message this will send: + * + { + acknowledgement: true, + actionType: 'complete', + data: { + id: id, + success: success, + detail: fileInfo.clientDetail + } + } + * and it's waiting from client data formatted like this: + * + { + actionType: '...', + message: {...} + } + * /!\ If wrapData is wrong configured is interpreted as false /!\ + */ + self.wrapData = _getOption("wrapData", false); + + var _isWrapDataWellConfigured = function () { + if (typeof self.wrapData === "boolean") { + return true; + } + if (typeof self.wrapData !== "object" || Array.isArray(self.wrapData)) { + return false; + } + + if(!self.wrapData.wrapKey || typeof self.wrapData.wrapKey.action !== "string" || typeof self.wrapData.wrapKey.message !== "string" || + !self.wrapData.unwrapKey || typeof self.wrapData.unwrapKey.action !== "string" || typeof self.wrapData.unwrapKey.message !== "string") { + return false; + } + + return true; + }; + + + /** + * Allow user to access to some private function to customize message reception. + * This is used if you specified wrapOptions on the client side and have to manually bind message to callback. + */ + self.exposePrivateFunction = _getOption("exposePrivateFunction", false); + + var _getTopicName = function (topicExtension) { + if (self.wrapData) { + return self.topicName; + } + + return self.topicName + topicExtension; + }; + + var _wrapData = function (data, action) { + if(!_isWrapDataWellConfigured() || !self.wrapData) { + return data; + } + var dataWrapped = {}; + if(self.wrapData.additionalData) { + Object.assign(dataWrapped, self.wrapData.additionalData); + } + + var actionKey = self.wrapData.wrapKey && typeof self.wrapData.wrapKey.action === "string" ? self.wrapData.wrapKey.action : "action"; + var messageKey = self.wrapData.wrapKey && typeof self.wrapData.wrapKey.message === "string" ? self.wrapData.wrapKey.message : "message"; + + dataWrapped[actionKey] = action; + dataWrapped[messageKey] = data; + return dataWrapped; + }; + + /** + * Private method to dispatch a custom event on the instance. + * @param {string} eventName Name for which listeners can listen. + * @param {object} properties An object literal with additional properties + * to be attached to the event object. + * @return {boolean} false if any callback returned false; true otherwise + */ + var _dispatch = function (eventName, properties) { + var evnt = document.createEvent("Event"); + evnt.initEvent(eventName, false, false); + for (var prop in properties) { + if (properties.hasOwnProperty(prop)) { + evnt[prop] = properties[prop]; + } + } + return self.dispatchEvent(evnt); + }; + + /** + * Private method to bind an event listener. Useful to ensure that all + * events have been unbound. Inspired by Backbone.js. + */ + var _listenedReferences = []; + var _listenTo = function (object, eventName, callback, bubble) { + object.addEventListener(eventName, callback, bubble); + _listenedReferences.push(arguments); + }; + var _stopListeningTo = function (object, eventName, callback, bubble) { + if (object.removeEventListener) { + object.removeEventListener(eventName, callback, bubble); + } + }; + var _stopListening = function () { + for (var i = _listenedReferences.length - 1; i >= 0; i--) { + _stopListeningTo.apply(this, _listenedReferences[i]); + } + _listenedReferences = []; + }; + + /** + * Private closure for the _load function. + * @param {File} file A W3C File object + * @return {void} + */ + var _loadOne = function (file) { + // First check for file size + if (self.maxFileSize !== null && file.size > self.maxFileSize) { + _dispatch("error", { + file: file, + message: "Attempt by client to upload file exceeding the maximum file size", + code: 1 + }); + return; + } + + // Dispatch an event to listeners and stop now if they don't want + // this file to be uploaded. + var evntResult = _dispatch("start", { + file: file + }); + if (!evntResult) return; + + // Scope variables + var reader = new FileReader(), + id = window.siofu_global.downloads++, + uploadComplete = false, + useText = self.useText, + offset = 0, + newName; + if (reader._realReader) reader = reader._realReader; // Support Android Crosswalk + uploadedFiles[id] = file; + + // An object for the outside to use to communicate with us + var communicator = { id: id }; + + // Calculate chunk size + var chunkSize = self.chunkSize; + if (chunkSize >= file.size || chunkSize <= 0) chunkSize = file.size; + + // Private function to handle transmission of file data + var transmitPart = function (start, end, content) { + var isBase64 = false; + if (!useText) { + try { + var uintArr = new Uint8Array(content); + + // Support the transmission of serialized ArrayBuffers + // for experimental purposes, but default to encoding the + // transmission in Base 64. + if (self.serializedOctets) { + content = uintArr; + } + else if (self.useBuffer) { + content = uintArr.buffer; + } + else { + isBase64 = true; + content = _uint8ArrayToBase64(uintArr); + } + } + catch (error) { + socket.emit(_getTopicName("_done"), _wrapData({ + id: id, + interrupt: true + }, "done")); + return; + } + } + + // TODO override the send data + socket.emit(_getTopicName("_progress"), _wrapData({ + id: id, + size: file.size, + start: start, + end: end, + content: content, + base64: isBase64 + }, "progress")); + }; + + // Callback when tranmission is complete. + var transmitDone = function () { + socket.emit(_getTopicName("_done"), _wrapData({ + id: id + }, "done")); + }; + + // Load a "chunk" of the file from offset to offset+chunkSize. + // + // Note that FileReader has its own "progress" event. However, + // it has not proven to be reliable enough for production. See + // Stack Overflow question #16713386. + // + // To compensate, we will manually load the file in chunks of a + // size specified by the user in the uploader.chunkSize property. + var processChunk = function () { + // Abort if we are told to do so. + if (communicator.abort) return; + + var chunk = file.slice(offset, Math.min(offset+chunkSize, file.size)); + if (useText) { + reader.readAsText(chunk); + } + else { + reader.readAsArrayBuffer(chunk); + } + }; + + // Callback for when the reader has completed a load event. + var loadCb = function (event) { + // Abort if we are told to do so. + if (communicator.abort) return; + + // Transmit the newly loaded data to the server and emit a client event + var bytesLoaded = Math.min(offset+chunkSize, file.size); + transmitPart(offset, bytesLoaded, event.target.result); + _dispatch("progress", { + file: file, + bytesLoaded: bytesLoaded, + name: newName + }); + + // Get ready to send the next chunk + offset += chunkSize; + if (offset >= file.size) { + // All done! + transmitDone(); + _dispatch("load", { + file: file, + reader: reader, + name: newName + }); + uploadComplete = true; + } + }; + _listenTo(reader, "load", loadCb); + + // Listen for an "error" event. Stop the transmission if one is received. + _listenTo(reader, "error", function () { + socket.emit(_getTopicName("_done"), _wrapData({ + id: id, + interrupt: true + }, "done")); + _stopListeningTo(reader, "load", loadCb); + }); + + // Do the same for the "abort" event. + _listenTo(reader, "abort", function () { + socket.emit(_getTopicName("_done"), _wrapData({ + id: id, + interrupt: true + }, "done")); + _stopListeningTo(reader, "load", loadCb); + }); + + // Transmit the "start" message to the server. + socket.emit(_getTopicName("_start"), _wrapData({ + name: file.name, + mtime: file.lastModified, + meta: file.meta, + size: file.size, + encoding: useText ? "text" : "octet", + id: id + }, "start")); + + // To avoid a race condition, we don't want to start transmitting to the + // server until the server says it is ready. + var readyCallback = function (_newName) { + newName = _newName; + processChunk(); + }; + var chunkCallback = function(){ + if ( !uploadComplete ) + processChunk(); + }; + readyCallbacks[id] = readyCallback; + chunkCallbacks[id] = chunkCallback; + + return communicator; + }; + + /** + * Private function to load the file into memory using the HTML5 FileReader object + * and then transmit that file through Socket.IO. + * + * @param {FileList} files An array of files + * @return {void} + */ + var _load = function (files) { + // Iterate through the array of files. + for (var i = 0; i < files.length; i++) { + // Evaluate each file in a closure, because we will need a new + // instance of FileReader for each file. + var communicator = _loadOne(files[i]); + communicators[communicator.id] = communicator; + } + }; + + /** + * Private function to fetch an HTMLInputElement instance that can be used + * during the file selection process. + * @return {void} + */ + var _getInputElement = function () { + var inpt = document.getElementById(self.fileInputElementId); + if (!inpt) { + inpt = document.createElement("input"); + inpt.setAttribute("type", "file"); + inpt.setAttribute("id", self.fileInputElementId); + inpt.style.display = "none"; + document.body.appendChild(inpt); + } + return inpt; + }; + + /** + * Private function to remove an HTMLInputElement created by this instance + * of SIOFU. + * + * @return {void} + */ + var _removeInputElement = function () { + var inpt = document.getElementById(self.fileInputElementId); + if (inpt) { + inpt.parentNode.removeChild(inpt); + } + }; + + var _baseFileSelectCallback = function (files) { + if (files.length === 0) return; + + // Ensure existence of meta property on each file + for (var i = 0; i < files.length; i++) { + if(!files[i].meta) files[i].meta = {}; + } + + // Dispatch the "choose" event + var evntResult = _dispatch("choose", { + files: files + }); + + // If the callback didn't return false, continue with the upload + if (evntResult) { + _load(files); + } + }; + + /** + * Private function that serves as a callback on file input. + * @param {Event} event The file input change event + * @return {void} + */ + var _fileSelectCallback = function (event) { + var files = event.target.files || event.dataTransfer.files; + event.preventDefault(); + _baseFileSelectCallback(files); + + if (self.resetFileInputs) { + try { + event.target.value = ""; //for IE11, latest Chrome/Firefox/Opera... + } catch(err) { + // ignore + } + if (event.target.value) { //for IE5 ~ IE10 + var form = document.createElement("form"), + parentNode = event.target.parentNode, ref = event.target.nextSibling; + form.appendChild(event.target); + form.reset(); + parentNode.insertBefore(event.target, ref); + } + } + }; + + + /** + * Submit files at arbitrary time + * @param {FileList} files Files received form the input element. + * @return {void} + */ + this.submitFiles = function (files) { + if (files) { + _baseFileSelectCallback(files); + } + }; + + /** + * Use a submitButton to upload files from the field given + * @param {HTMLInputElement} submitButton the button that the user has to + * click to start the upload + * @param {HTMLInputElement} input the field with the data to upload + * + * @return {void} + */ + this.listenOnSubmit = function (submitButton, input) { + if (!input.files) return; + _listenTo(submitButton, "click", function () { + _baseFileSelectCallback(input.files); + }, false); + }; + + /** + * Use a submitButton to upload files from the field given + * @param {HTMLInputElement} submitButton the button that the user has to + * click to start the upload + * @param {Array} array an array of fields with the files to upload + * + * @return {void} + */ + this.listenOnArraySubmit = function (submitButton, array) { + for (var index in array) { + this.listenOnSubmit(submitButton, array[index]); + } + }; + + /** + * Use a file input to activate this instance of the file uploader. + * @param {HTMLInputElement} inpt The input element (e.g., as returned by + * document.getElementById("yourId")) + * @return {void} + */ + this.listenOnInput = function (inpt) { + if (!inpt.files) return; + _listenTo(inpt, "change", _fileSelectCallback, false); + }; + + /** + * Accept files dropped on an element and upload them using this instance + * of the file uploader. + * @param {HTMLELement} div Any HTML element. When the user drags a file + * or files onto this element, those files will + * be processed by the instance. + * @return {void} + */ + this.listenOnDrop = function (div) { + // We need to preventDefault on the dragover event in order for the + // drag-and-drop operation to work. + _listenTo(div, "dragover", function (event) { + event.preventDefault(); + }, false); + + _listenTo(div, "drop", _fileSelectCallback); + }; + + /** + * Display a dialog box for the user to select a file. The file will then + * be uploaded using this instance of SocketIOFileUpload. + * + * This method works in all current browsers except Firefox, though Opera + * requires that the input element be visible. + * + * @return {void} + */ + this.prompt = function () { + var inpt = _getInputElement(); + + // Listen for the "change" event on the file input element. + _listenTo(inpt, "change", _fileSelectCallback, false); + + // Fire a click event on the input element. Firefox does not allow + // programatic clicks on input elements, but the other browsers do. + // Note that Opera requires that the element be visible when "clicked". + var evnt = document.createEvent("MouseEvents"); + evnt.initMouseEvent("click", true, true, window, + 0, 0, 0, 0, 0, false, false, false, false, 0, null); + inpt.dispatchEvent(evnt); + }; + + /** + * Destroy an instance of Socket.IO file upload (i.e., unbind events and + * relieve memory). + * + * IMPORTANT: To finish the memory relief process, set all external + * references to this instance of SIOFU (including the reference used to + * call this destroy function) to null. + * + * @return {void} + */ + this.destroy = function () { + _stopListening(); + _removeInputElement(); + for (var id in communicators) { + if (communicators.hasOwnProperty(id)) { + communicators[id].abort = true; + } + } + callbacks = null, uploadedFiles = null, readyCallbacks = null, communicators = null; + }; + + /** + * Registers an event listener. If the callback function returns false, + * the file uploader will stop uploading the current file. + * @param {string} eventName Type of event for which to listen. + * @param {Function} callback Listener function. Will be passed the + * event as an argument when the event occurs. + * @return {void} + */ + this.addEventListener = function (eventName, callback) { + if (!callbacks[eventName]) callbacks[eventName] = []; + callbacks[eventName].push(callback); + }; + + /** + * Removes an event listener. + * @param {string} eventName Type of event. + * @param {Function} callback Listener function to remove. + * @return {boolean} true if callback removed; false otherwise + */ + this.removeEventListener = function (eventName, callback) { + if (!callbacks[eventName]) return false; + for (var i = 0; i < callbacks[eventName].length; i++) { + if (callbacks[eventName][i] === callback) { + callbacks[eventName].splice(i, 1); + return true; + } + } + return false; + }; + + /** + * Dispatches an event into this instance's event model. + * @param {Event} evnt The event to dispatch. + * @return {boolean} false if any callback returned false; true otherwise + */ + this.dispatchEvent = function (evnt) { + var eventCallbacks = callbacks[evnt.type]; + if (!eventCallbacks) return true; + var retVal = true; + for (var i = 0; i < eventCallbacks.length; i++) { + var callbackResult = eventCallbacks[i](evnt); + if (callbackResult === false) { + retVal = false; + } + } + return retVal; + }; + + // OTHER LIBRARIES + /* + * base64-arraybuffer + * https://github.com/niklasvh/base64-arraybuffer + * + * Copyright (c) 2012 Niklas von Hertzen + * Licensed under the MIT license. + * + * Adapted for SocketIOFileUpload. + */ + var _uint8ArrayToBase64 = function (bytes) { + var i, len = bytes.buffer.byteLength, base64 = "", + chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + for (i = 0; i < len; i += 3) { + base64 += chars[bytes[i] >> 2]; + base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)]; + base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)]; + base64 += chars[bytes[i + 2] & 63]; + } + + if ((len % 3) === 2) { + base64 = base64.substring(0, base64.length - 1) + "="; + } + else if (len % 3 === 1) { + base64 = base64.substring(0, base64.length - 2) + "=="; + } + + return base64; + }; + // END OTHER LIBRARIES + var _chunckCallback = function(data) { + if ( chunkCallbacks[data.id] ) + chunkCallbacks[data.id](); + }; + + var _readyCallback = function (data) { + if (readyCallbacks[data.id]) + readyCallbacks[data.id](data.name); + }; + + var _completCallback = function (data) { + if (uploadedFiles[data.id]) { + _dispatch("complete", { + file: uploadedFiles[data.id], + detail: data.detail, + success: data.success + }); + } + }; + + var _errorCallback = function (data) { + if ( uploadedFiles[data.id] ) { + _dispatch("error", { + file: uploadedFiles[data.id], + message: data.message, + code: 0 + }); + if (communicators) communicators[data.id].abort = true; + } + }; + + // CONSTRUCTOR: Listen to the "complete", "ready", and "error" messages + // on the socket. + if (_isWrapDataWellConfigured() && self.wrapData) { + var mapActionToCallback = { + chunk: _chunckCallback, + ready: _readyCallback, + complete: _completCallback, + error: _errorCallback + }; + + _listenTo(socket, _getTopicName(), function (message) { + if (typeof message !== "object") { + console.log("SocketIOFileUploadClient Error: You choose to wrap your data so the message from the server need to be an object"); // eslint-disable-line no-console + return; + } + var actionKey = self.wrapData.unwrapKey && typeof self.wrapData.unwrapKey.action === "string" ? self.wrapData.unwrapKey.action : "action"; + var messageKey = self.wrapData.unwrapKey && typeof self.wrapData.unwrapKey.message === "string" ? self.wrapData.unwrapKey.message : "message"; + + var action = message[actionKey]; + var data = message[messageKey]; + if (!action || !data || !mapActionToCallback[action]) { + console.log("SocketIOFileUploadClient Error: You choose to wrap your data but the message from the server is wrong configured. Check the message and your wrapData option"); // eslint-disable-line no-console + return; + } + mapActionToCallback[action](data); + }); + } else { + _listenTo(socket, _getTopicName("_chunk"), _chunckCallback); + _listenTo(socket, _getTopicName("_ready"), _readyCallback); + _listenTo(socket, _getTopicName("_complete"), _completCallback); + _listenTo(socket, _getTopicName("_error"), _errorCallback); + } + + if (this.exposePrivateFunction) { + this.chunckCallback = _chunckCallback; + this.readyCallback = _readyCallback; + this.completCallback = _completCallback; + this.errorCallback = _errorCallback; + } + }; +})); diff --git a/public/js/socket.io.js b/public/js/socket.io.js new file mode 100644 index 0000000..73d23f0 --- /dev/null +++ b/public/js/socket.io.js @@ -0,0 +1,4747 @@ +/*! + * Socket.IO v4.6.2 + * (c) 2014-2023 Guillermo Rauch + * Released under the MIT License. + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.io = factory()); +})(this, (function () { 'use strict'; + + function _typeof(obj) { + "@babel/helpers - typeof"; + + return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { + return typeof obj; + } : function (obj) { + return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; + }, _typeof(obj); + } + + function _classCallCheck(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + } + + function _defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } + } + + function _createClass(Constructor, protoProps, staticProps) { + if (protoProps) _defineProperties(Constructor.prototype, protoProps); + if (staticProps) _defineProperties(Constructor, staticProps); + Object.defineProperty(Constructor, "prototype", { + writable: false + }); + return Constructor; + } + + function _extends() { + _extends = Object.assign ? Object.assign.bind() : function (target) { + for (var i = 1; i < arguments.length; i++) { + var source = arguments[i]; + + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key]; + } + } + } + + return target; + }; + return _extends.apply(this, arguments); + } + + function _inherits(subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function"); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + writable: true, + configurable: true + } + }); + Object.defineProperty(subClass, "prototype", { + writable: false + }); + if (superClass) _setPrototypeOf(subClass, superClass); + } + + function _getPrototypeOf(o) { + _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) { + return o.__proto__ || Object.getPrototypeOf(o); + }; + return _getPrototypeOf(o); + } + + function _setPrototypeOf(o, p) { + _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { + o.__proto__ = p; + return o; + }; + return _setPrototypeOf(o, p); + } + + function _isNativeReflectConstruct() { + if (typeof Reflect === "undefined" || !Reflect.construct) return false; + if (Reflect.construct.sham) return false; + if (typeof Proxy === "function") return true; + + try { + Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); + return true; + } catch (e) { + return false; + } + } + + function _construct(Parent, args, Class) { + if (_isNativeReflectConstruct()) { + _construct = Reflect.construct.bind(); + } else { + _construct = function _construct(Parent, args, Class) { + var a = [null]; + a.push.apply(a, args); + var Constructor = Function.bind.apply(Parent, a); + var instance = new Constructor(); + if (Class) _setPrototypeOf(instance, Class.prototype); + return instance; + }; + } + + return _construct.apply(null, arguments); + } + + function _isNativeFunction(fn) { + return Function.toString.call(fn).indexOf("[native code]") !== -1; + } + + function _wrapNativeSuper(Class) { + var _cache = typeof Map === "function" ? new Map() : undefined; + + _wrapNativeSuper = function _wrapNativeSuper(Class) { + if (Class === null || !_isNativeFunction(Class)) return Class; + + if (typeof Class !== "function") { + throw new TypeError("Super expression must either be null or a function"); + } + + if (typeof _cache !== "undefined") { + if (_cache.has(Class)) return _cache.get(Class); + + _cache.set(Class, Wrapper); + } + + function Wrapper() { + return _construct(Class, arguments, _getPrototypeOf(this).constructor); + } + + Wrapper.prototype = Object.create(Class.prototype, { + constructor: { + value: Wrapper, + enumerable: false, + writable: true, + configurable: true + } + }); + return _setPrototypeOf(Wrapper, Class); + }; + + return _wrapNativeSuper(Class); + } + + function _assertThisInitialized(self) { + if (self === void 0) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return self; + } + + function _possibleConstructorReturn(self, call) { + if (call && (typeof call === "object" || typeof call === "function")) { + return call; + } else if (call !== void 0) { + throw new TypeError("Derived constructors may only return object or undefined"); + } + + return _assertThisInitialized(self); + } + + function _createSuper(Derived) { + var hasNativeReflectConstruct = _isNativeReflectConstruct(); + + return function _createSuperInternal() { + var Super = _getPrototypeOf(Derived), + result; + + if (hasNativeReflectConstruct) { + var NewTarget = _getPrototypeOf(this).constructor; + + result = Reflect.construct(Super, arguments, NewTarget); + } else { + result = Super.apply(this, arguments); + } + + return _possibleConstructorReturn(this, result); + }; + } + + function _superPropBase(object, property) { + while (!Object.prototype.hasOwnProperty.call(object, property)) { + object = _getPrototypeOf(object); + if (object === null) break; + } + + return object; + } + + function _get() { + if (typeof Reflect !== "undefined" && Reflect.get) { + _get = Reflect.get.bind(); + } else { + _get = function _get(target, property, receiver) { + var base = _superPropBase(target, property); + + if (!base) return; + var desc = Object.getOwnPropertyDescriptor(base, property); + + if (desc.get) { + return desc.get.call(arguments.length < 3 ? target : receiver); + } + + return desc.value; + }; + } + + return _get.apply(this, arguments); + } + + function _unsupportedIterableToArray(o, minLen) { + if (!o) return; + if (typeof o === "string") return _arrayLikeToArray(o, minLen); + var n = Object.prototype.toString.call(o).slice(8, -1); + if (n === "Object" && o.constructor) n = o.constructor.name; + if (n === "Map" || n === "Set") return Array.from(o); + if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); + } + + function _arrayLikeToArray(arr, len) { + if (len == null || len > arr.length) len = arr.length; + + for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; + + return arr2; + } + + function _createForOfIteratorHelper(o, allowArrayLike) { + var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; + + if (!it) { + if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { + if (it) o = it; + var i = 0; + + var F = function () {}; + + return { + s: F, + n: function () { + if (i >= o.length) return { + done: true + }; + return { + done: false, + value: o[i++] + }; + }, + e: function (e) { + throw e; + }, + 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 normalCompletion = true, + didErr = false, + err; + return { + s: function () { + it = it.call(o); + }, + n: function () { + var step = it.next(); + normalCompletion = step.done; + return step; + }, + e: function (e) { + didErr = true; + err = e; + }, + f: function () { + try { + if (!normalCompletion && it.return != null) it.return(); + } finally { + if (didErr) throw err; + } + } + }; + } + + 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); + }; + + var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; // Use a lookup table to find the index. + + var lookup$1 = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256); + + for (var i$1 = 0; i$1 < chars.length; i$1++) { + lookup$1[chars.charCodeAt(i$1)] = i$1; + } + var decode$1 = function decode(base64) { + var bufferLength = base64.length * 0.75, + len = base64.length, + i, + p = 0, + encoded1, + encoded2, + encoded3, + encoded4; + + if (base64[base64.length - 1] === '=') { + bufferLength--; + + if (base64[base64.length - 2] === '=') { + bufferLength--; + } + } + + var arraybuffer = new ArrayBuffer(bufferLength), + bytes = new Uint8Array(arraybuffer); + + for (i = 0; i < len; i += 4) { + encoded1 = lookup$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": + return data instanceof ArrayBuffer ? new Blob([data]) : data; + + case "arraybuffer": + default: + return data; + // assuming the data is already an ArrayBuffer + } + }; + + 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; + }; + + 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 globalThisShim = function () { + if (typeof self !== "undefined") { + return self; + } else if (typeof window !== "undefined") { + return window; + } else { + return Function("return this")(); + } + }(); + + function pick(obj) { + for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + attr[_key - 1] = arguments[_key]; + } + + return attr.reduce(function (acc, k) { + if (obj.hasOwnProperty(k)) { + acc[k] = obj[k]; + } + + return acc; + }, {}); + } // Keep a reference to the real timeout functions so they can be used when overridden + + var NATIVE_SET_TIMEOUT = globalThisShim.setTimeout; + var NATIVE_CLEAR_TIMEOUT = globalThisShim.clearTimeout; + function installTimerFunctions(obj, opts) { + if (opts.useNativeTimers) { + obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThisShim); + obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThisShim); + } else { + obj.setTimeoutFn = globalThisShim.setTimeout.bind(globalThisShim); + obj.clearTimeoutFn = globalThisShim.clearTimeout.bind(globalThisShim); + } + } // base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64) + + var BASE64_OVERHEAD = 1.33; // we could also have used `new Blob([obj]).size`, but it isn't supported in IE9 + + function byteLength(obj) { + if (typeof obj === "string") { + return utf8Length(obj); + } // arraybuffer or blob + + + return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD); + } + + function utf8Length(str) { + var c = 0, + length = 0; + + for (var i = 0, l = str.length; i < l; i++) { + c = str.charCodeAt(i); + + if (c < 0x80) { + length += 1; + } else if (c < 0x800) { + length += 2; + } else if (c < 0xd800 || c >= 0xe000) { + length += 3; + } else { + i++; + length += 4; + } + } + + return length; + } + + var TransportError = /*#__PURE__*/function (_Error) { + _inherits(TransportError, _Error); + + var _super = _createSuper(TransportError); + + function TransportError(reason, description, context) { + var _this; + + _classCallCheck(this, TransportError); + + _this = _super.call(this, reason); + _this.description = description; + _this.context = context; + _this.type = "TransportError"; + return _this; + } + + return _createClass(TransportError); + }( /*#__PURE__*/_wrapNativeSuper(Error)); + + var Transport = /*#__PURE__*/function (_Emitter) { + _inherits(Transport, _Emitter); + + var _super2 = _createSuper(Transport); + + /** + * Transport abstract constructor. + * + * @param {Object} opts - options + * @protected + */ + function Transport(opts) { + var _this2; + + _classCallCheck(this, Transport); + + _this2 = _super2.call(this); + _this2.writable = false; + installTimerFunctions(_assertThisInitialized(_this2), opts); + _this2.opts = opts; + _this2.query = opts.query; + _this2.socket = opts.socket; + return _this2; + } + /** + * Emits an error. + * + * @param {String} reason + * @param description + * @param context - the error context + * @return {Transport} for chaining + * @protected + */ + + + _createClass(Transport, [{ + key: "onError", + value: function onError(reason, description, context) { + _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "error", new TransportError(reason, description, context)); + + return this; + } + /** + * Opens the transport. + */ + + }, { + key: "open", + value: function open() { + this.readyState = "opening"; + this.doOpen(); + return this; + } + /** + * Closes the transport. + */ + + }, { + key: "close", + value: function close() { + if (this.readyState === "opening" || this.readyState === "open") { + this.doClose(); + this.onClose(); + } + + return this; + } + /** + * Sends multiple packets. + * + * @param {Array} packets + */ + + }, { + key: "send", + value: function send(packets) { + if (this.readyState === "open") { + this.write(packets); + } + } + /** + * Called upon open + * + * @protected + */ + + }, { + key: "onOpen", + value: function onOpen() { + this.readyState = "open"; + this.writable = true; + + _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "open"); + } + /** + * Called with data. + * + * @param {String} data + * @protected + */ + + }, { + key: "onData", + value: function onData(data) { + var packet = decodePacket(data, this.socket.binaryType); + this.onPacket(packet); + } + /** + * Called with a decoded packet. + * + * @protected + */ + + }, { + key: "onPacket", + value: function onPacket(packet) { + _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "packet", packet); + } + /** + * Called upon close. + * + * @protected + */ + + }, { + key: "onClose", + value: function onClose(details) { + this.readyState = "closed"; + + _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "close", details); + } + /** + * Pauses the transport, in order not to lose packets during an upgrade. + * + * @param onPause + */ + + }, { + key: "pause", + value: function pause(onPause) {} + }]); + + return Transport; + }(Emitter); + + // imported from https://github.com/unshiftio/yeast + + var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split(''), + length = 64, + map = {}; + var seed = 0, + i = 0, + prev; + /** + * Return a string representing the specified number. + * + * @param {Number} num The number to convert. + * @returns {String} The string representation of the number. + * @api public + */ + + function encode$1(num) { + var encoded = ''; + + do { + encoded = alphabet[num % length] + encoded; + num = Math.floor(num / length); + } while (num > 0); + + return encoded; + } + /** + * Yeast: A tiny growing id generator. + * + * @returns {String} A unique id. + * @api public + */ + + function yeast() { + var now = encode$1(+new Date()); + if (now !== prev) return seed = 0, prev = now; + return now + '.' + encode$1(seed++); + } // + // Map each character to its index. + // + + for (; i < length; i++) { + map[alphabet[i]] = i; + } + + // 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; + } + + // imported from https://github.com/component/has-cors + var value = false; + + try { + value = typeof XMLHttpRequest !== 'undefined' && 'withCredentials' in new XMLHttpRequest(); + } catch (err) {// if XMLHttp support is disabled in IE then it will throw + // when trying to create + } + + var hasCORS = value; + + // browser shim for xmlhttprequest module + function XHR(opts) { + var xdomain = opts.xdomain; // XMLHttpRequest can be disabled on IE + + try { + if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) { + return new XMLHttpRequest(); + } + } catch (e) {} + + if (!xdomain) { + try { + return new globalThisShim[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP"); + } catch (e) {} + } + } + + function empty() {} + + var hasXHR2 = function () { + var xhr = new XHR({ + xdomain: false + }); + return null != xhr.responseType; + }(); + + var Polling = /*#__PURE__*/function (_Transport) { + _inherits(Polling, _Transport); + + var _super = _createSuper(Polling); + + /** + * XHR Polling constructor. + * + * @param {Object} opts + * @package + */ + function Polling(opts) { + var _this; + + _classCallCheck(this, Polling); + + _this = _super.call(this, opts); + _this.polling = false; + + if (typeof location !== "undefined") { + var isSSL = "https:" === location.protocol; + var port = location.port; // some user agents have empty `location.port` + + if (!port) { + port = isSSL ? "443" : "80"; + } + + _this.xd = typeof location !== "undefined" && opts.hostname !== location.hostname || port !== opts.port; + _this.xs = opts.secure !== isSSL; + } + /** + * XHR supports binary + */ + + + var forceBase64 = opts && opts.forceBase64; + _this.supportsBinary = hasXHR2 && !forceBase64; + return _this; + } + + _createClass(Polling, [{ + key: "name", + get: function get() { + return "polling"; + } + /** + * Opens the socket (triggers polling). We write a PING message to determine + * when the transport is open. + * + * @protected + */ + + }, { + key: "doOpen", + value: function doOpen() { + this.poll(); + } + /** + * Pauses polling. + * + * @param {Function} onPause - callback upon buffers are flushed and transport is paused + * @package + */ + + }, { + key: "pause", + value: function pause(onPause) { + var _this2 = this; + + this.readyState = "pausing"; + + var pause = function pause() { + _this2.readyState = "paused"; + onPause(); + }; + + if (this.polling || !this.writable) { + var total = 0; + + if (this.polling) { + total++; + this.once("pollComplete", function () { + --total || pause(); + }); + } + + if (!this.writable) { + total++; + this.once("drain", function () { + --total || pause(); + }); + } + } else { + pause(); + } + } + /** + * Starts polling cycle. + * + * @private + */ + + }, { + key: "poll", + value: function poll() { + this.polling = true; + this.doPoll(); + this.emitReserved("poll"); + } + /** + * Overloads onData to detect payloads. + * + * @protected + */ + + }, { + key: "onData", + value: function onData(data) { + var _this3 = this; + + var callback = function callback(packet) { + // if its the first message we consider the transport open + if ("opening" === _this3.readyState && packet.type === "open") { + _this3.onOpen(); + } // if its a close packet, we close the ongoing requests + + + if ("close" === packet.type) { + _this3.onClose({ + description: "transport closed by the server" + }); + + return false; + } // otherwise bypass onData and handle the message + + + _this3.onPacket(packet); + }; // decode payload + + + decodePayload(data, this.socket.binaryType).forEach(callback); // if an event did not trigger closing + + if ("closed" !== this.readyState) { + // if we got data we're not polling + this.polling = false; + this.emitReserved("pollComplete"); + + if ("open" === this.readyState) { + this.poll(); + } + } + } + /** + * For polling, send a close packet. + * + * @protected + */ + + }, { + key: "doClose", + value: function doClose() { + var _this4 = this; + + var close = function close() { + _this4.write([{ + type: "close" + }]); + }; + + if ("open" === this.readyState) { + close(); + } else { + // in case we're trying to close while + // handshaking is in progress (GH-164) + this.once("open", close); + } + } + /** + * Writes a packets payload. + * + * @param {Array} packets - data packets + * @protected + */ + + }, { + key: "write", + value: function write(packets) { + var _this5 = this; + + this.writable = false; + encodePayload(packets, function (data) { + _this5.doWrite(data, function () { + _this5.writable = true; + + _this5.emitReserved("drain"); + }); + }); + } + /** + * Generates uri for connection. + * + * @private + */ + + }, { + key: "uri", + value: function uri() { + var query = this.query || {}; + var schema = this.opts.secure ? "https" : "http"; + var port = ""; // cache busting is forced + + if (false !== this.opts.timestampRequests) { + query[this.opts.timestampParam] = yeast(); + } + + if (!this.supportsBinary && !query.sid) { + query.b64 = 1; + } // avoid port if default for schema + + + if (this.opts.port && ("https" === schema && Number(this.opts.port) !== 443 || "http" === schema && Number(this.opts.port) !== 80)) { + port = ":" + this.opts.port; + } + + var encodedQuery = encode(query); + var ipv6 = this.opts.hostname.indexOf(":") !== -1; + return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + (encodedQuery.length ? "?" + encodedQuery : ""); + } + /** + * Creates a request. + * + * @param {String} method + * @private + */ + + }, { + key: "request", + value: function request() { + var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + + _extends(opts, { + xd: this.xd, + xs: this.xs + }, this.opts); + + return new Request(this.uri(), opts); + } + /** + * Sends data. + * + * @param {String} data to send. + * @param {Function} called upon flush. + * @private + */ + + }, { + key: "doWrite", + value: function doWrite(data, fn) { + var _this6 = this; + + var req = this.request({ + method: "POST", + data: data + }); + req.on("success", fn); + req.on("error", function (xhrStatus, context) { + _this6.onError("xhr post error", xhrStatus, context); + }); + } + /** + * Starts a poll cycle. + * + * @private + */ + + }, { + key: "doPoll", + value: function doPoll() { + var _this7 = this; + + var req = this.request(); + req.on("data", this.onData.bind(this)); + req.on("error", function (xhrStatus, context) { + _this7.onError("xhr poll error", xhrStatus, context); + }); + this.pollXhr = req; + } + }]); + + return Polling; + }(Transport); + var Request = /*#__PURE__*/function (_Emitter) { + _inherits(Request, _Emitter); + + var _super2 = _createSuper(Request); + + /** + * Request constructor + * + * @param {Object} options + * @package + */ + function Request(uri, opts) { + var _this8; + + _classCallCheck(this, Request); + + _this8 = _super2.call(this); + installTimerFunctions(_assertThisInitialized(_this8), opts); + _this8.opts = opts; + _this8.method = opts.method || "GET"; + _this8.uri = uri; + _this8.async = false !== opts.async; + _this8.data = undefined !== opts.data ? opts.data : null; + + _this8.create(); + + return _this8; + } + /** + * Creates the XHR object and sends the request. + * + * @private + */ + + + _createClass(Request, [{ + key: "create", + value: function create() { + var _this9 = this; + + var opts = pick(this.opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref"); + opts.xdomain = !!this.opts.xd; + opts.xscheme = !!this.opts.xs; + var xhr = this.xhr = new XHR(opts); + + try { + xhr.open(this.method, this.uri, this.async); + + try { + if (this.opts.extraHeaders) { + xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true); + + for (var i in this.opts.extraHeaders) { + if (this.opts.extraHeaders.hasOwnProperty(i)) { + xhr.setRequestHeader(i, this.opts.extraHeaders[i]); + } + } + } + } catch (e) {} + + if ("POST" === this.method) { + try { + xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8"); + } catch (e) {} + } + + try { + xhr.setRequestHeader("Accept", "*/*"); + } catch (e) {} // ie6 check + + + if ("withCredentials" in xhr) { + xhr.withCredentials = this.opts.withCredentials; + } + + if (this.opts.requestTimeout) { + xhr.timeout = this.opts.requestTimeout; + } + + xhr.onreadystatechange = function () { + if (4 !== xhr.readyState) return; + + if (200 === xhr.status || 1223 === xhr.status) { + _this9.onLoad(); + } else { + // make sure the `error` event handler that's user-set + // does not throw in the same tick and gets caught here + _this9.setTimeoutFn(function () { + _this9.onError(typeof xhr.status === "number" ? xhr.status : 0); + }, 0); + } + }; + + xhr.send(this.data); + } catch (e) { + // Need to defer since .create() is called directly from the constructor + // and thus the 'error' event can only be only bound *after* this exception + // occurs. Therefore, also, we cannot throw here at all. + this.setTimeoutFn(function () { + _this9.onError(e); + }, 0); + return; + } + + if (typeof document !== "undefined") { + this.index = Request.requestsCount++; + Request.requests[this.index] = this; + } + } + /** + * Called upon error. + * + * @private + */ + + }, { + key: "onError", + value: function onError(err) { + this.emitReserved("error", err, this.xhr); + this.cleanup(true); + } + /** + * Cleans up house. + * + * @private + */ + + }, { + key: "cleanup", + value: function cleanup(fromError) { + if ("undefined" === typeof this.xhr || null === this.xhr) { + return; + } + + this.xhr.onreadystatechange = empty; + + if (fromError) { + try { + this.xhr.abort(); + } catch (e) {} + } + + if (typeof document !== "undefined") { + delete Request.requests[this.index]; + } + + this.xhr = null; + } + /** + * Called upon load. + * + * @private + */ + + }, { + key: "onLoad", + value: function onLoad() { + var data = this.xhr.responseText; + + if (data !== null) { + this.emitReserved("data", data); + this.emitReserved("success"); + this.cleanup(); + } + } + /** + * Aborts the request. + * + * @package + */ + + }, { + key: "abort", + value: function abort() { + this.cleanup(); + } + }]); + + return Request; + }(Emitter); + Request.requestsCount = 0; + Request.requests = {}; + /** + * Aborts pending requests when unloading the window. This is needed to prevent + * memory leaks (e.g. when using IE) and to ensure that no spurious error is + * emitted. + */ + + if (typeof document !== "undefined") { + // @ts-ignore + if (typeof attachEvent === "function") { + // @ts-ignore + attachEvent("onunload", unloadHandler); + } else if (typeof addEventListener === "function") { + var terminationEvent = "onpagehide" in globalThisShim ? "pagehide" : "unload"; + addEventListener(terminationEvent, unloadHandler, false); + } + } + + function unloadHandler() { + for (var i in Request.requests) { + if (Request.requests.hasOwnProperty(i)) { + Request.requests[i].abort(); + } + } + } + + var nextTick = function () { + var isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function"; + + if (isPromiseAvailable) { + return function (cb) { + return Promise.resolve().then(cb); + }; + } else { + return function (cb, setTimeoutFn) { + return setTimeoutFn(cb, 0); + }; + } + }(); + var WebSocket = globalThisShim.WebSocket || globalThisShim.MozWebSocket; + var usingBrowserWebSocket = true; + var defaultBinaryType = "arraybuffer"; + + var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative"; + var WS = /*#__PURE__*/function (_Transport) { + _inherits(WS, _Transport); + + var _super = _createSuper(WS); + + /** + * WebSocket transport constructor. + * + * @param {Object} opts - connection options + * @protected + */ + function WS(opts) { + var _this; + + _classCallCheck(this, WS); + + _this = _super.call(this, opts); + _this.supportsBinary = !opts.forceBase64; + return _this; + } + + _createClass(WS, [{ + key: "name", + get: function get() { + return "websocket"; + } + }, { + key: "doOpen", + value: function doOpen() { + if (!this.check()) { + // let probe timeout + return; + } + + var uri = this.uri(); + var protocols = this.opts.protocols; // React Native only supports the 'headers' option, and will print a warning if anything else is passed + + var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity"); + + if (this.opts.extraHeaders) { + opts.headers = this.opts.extraHeaders; + } + + try { + this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts); + } catch (err) { + return this.emitReserved("error", err); + } + + this.ws.binaryType = this.socket.binaryType || defaultBinaryType; + this.addEventListeners(); + } + /** + * Adds event listeners to the socket + * + * @private + */ + + }, { + key: "addEventListeners", + value: function addEventListeners() { + var _this2 = this; + + this.ws.onopen = function () { + if (_this2.opts.autoUnref) { + _this2.ws._socket.unref(); + } + + _this2.onOpen(); + }; + + this.ws.onclose = function (closeEvent) { + return _this2.onClose({ + description: "websocket connection closed", + context: closeEvent + }); + }; + + this.ws.onmessage = function (ev) { + return _this2.onData(ev.data); + }; + + this.ws.onerror = function (e) { + return _this2.onError("websocket error", e); + }; + } + }, { + key: "write", + value: function write(packets) { + var _this3 = this; + + this.writable = false; // encodePacket efficient as it uses WS framing + // no need for encodePayload + + var _loop = function _loop(i) { + var packet = packets[i]; + var lastPacket = i === packets.length - 1; + encodePacket(packet, _this3.supportsBinary, function (data) { + // always create a new object (GH-437) + var opts = {}; + // have a chance of informing us about it yet, in that case send will + // throw an error + + + try { + if (usingBrowserWebSocket) { + // TypeError is thrown when passing the second argument on Safari + _this3.ws.send(data); + } + } catch (e) {} + + if (lastPacket) { + // fake drain + // defer to next tick to allow Socket to clear writeBuffer + nextTick(function () { + _this3.writable = true; + + _this3.emitReserved("drain"); + }, _this3.setTimeoutFn); + } + }); + }; + + for (var i = 0; i < packets.length; i++) { + _loop(i); + } + } + }, { + key: "doClose", + value: function doClose() { + if (typeof this.ws !== "undefined") { + this.ws.close(); + this.ws = null; + } + } + /** + * Generates uri for connection. + * + * @private + */ + + }, { + key: "uri", + value: function uri() { + var query = this.query || {}; + var schema = this.opts.secure ? "wss" : "ws"; + var port = ""; // avoid port if default for schema + + if (this.opts.port && ("wss" === schema && Number(this.opts.port) !== 443 || "ws" === schema && Number(this.opts.port) !== 80)) { + port = ":" + this.opts.port; + } // append timestamp to URI + + + if (this.opts.timestampRequests) { + query[this.opts.timestampParam] = yeast(); + } // communicate binary support capabilities + + + if (!this.supportsBinary) { + query.b64 = 1; + } + + var encodedQuery = encode(query); + var ipv6 = this.opts.hostname.indexOf(":") !== -1; + return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + (encodedQuery.length ? "?" + encodedQuery : ""); + } + /** + * Feature detection for WebSocket. + * + * @return {Boolean} whether this transport is available. + * @private + */ + + }, { + key: "check", + value: function check() { + return !!WebSocket; + } + }]); + + return WS; + }(Transport); + + var transports = { + websocket: WS, + polling: Polling + }; + + // imported from https://github.com/galkn/parseuri + + /** + * Parses a URI + * + * Note: we could also have used the built-in URL object, but it isn't supported on all platforms. + * + * See: + * - https://developer.mozilla.org/en-US/docs/Web/API/URL + * - https://caniuse.com/url + * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B + * + * History of the parse() method: + * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c + * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3 + * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242 + * + * @author Steven Levithan (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) { + var src = str, + b = str.indexOf('['), + e = str.indexOf(']'); + + if (b != -1 && e != -1) { + str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length); + } + + var m = re.exec(str || ''), + uri = {}, + i = 14; + + while (i--) { + uri[parts[i]] = m[i] || ''; + } + + if (b != -1 && e != -1) { + uri.source = src; + uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':'); + uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':'); + uri.ipv6uri = true; + } + + uri.pathNames = pathNames(uri, uri['path']); + uri.queryKey = queryKey(uri, uri['query']); + return uri; + } + + function pathNames(obj, path) { + var regx = /\/{2,9}/g, + names = path.replace(regx, "/").split("/"); + + if (path.slice(0, 1) == '/' || path.length === 0) { + names.splice(0, 1); + } + + if (path.slice(-1) == '/') { + names.splice(names.length - 1, 1); + } + + return names; + } + + function queryKey(uri, query) { + var data = {}; + query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) { + if ($1) { + data[$1] = $2; + } + }); + return data; + } + + var Socket$1 = /*#__PURE__*/function (_Emitter) { + _inherits(Socket, _Emitter); + + var _super = _createSuper(Socket); + + /** + * Socket constructor. + * + * @param {String|Object} uri - uri or options + * @param {Object} opts - options + */ + function Socket(uri) { + var _this; + + var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + _classCallCheck(this, Socket); + + _this = _super.call(this); + _this.writeBuffer = []; + + if (uri && "object" === _typeof(uri)) { + opts = uri; + uri = null; + } + + if (uri) { + uri = parse(uri); + opts.hostname = uri.host; + opts.secure = uri.protocol === "https" || uri.protocol === "wss"; + opts.port = uri.port; + if (uri.query) opts.query = uri.query; + } else if (opts.host) { + opts.hostname = parse(opts.host).host; + } + + installTimerFunctions(_assertThisInitialized(_this), opts); + _this.secure = null != opts.secure ? opts.secure : typeof location !== "undefined" && "https:" === location.protocol; + + if (opts.hostname && !opts.port) { + // if no port is specified manually, use the protocol default + opts.port = _this.secure ? "443" : "80"; + } + + _this.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost"); + _this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? "443" : "80"); + _this.transports = opts.transports || ["polling", "websocket"]; + _this.writeBuffer = []; + _this.prevBufferLen = 0; + _this.opts = _extends({ + path: "/engine.io", + agent: false, + withCredentials: false, + upgrade: true, + timestampParam: "t", + rememberUpgrade: false, + addTrailingSlash: true, + rejectUnauthorized: true, + perMessageDeflate: { + threshold: 1024 + }, + transportOptions: {}, + closeOnBeforeunload: true + }, opts); + _this.opts.path = _this.opts.path.replace(/\/$/, "") + (_this.opts.addTrailingSlash ? "/" : ""); + + if (typeof _this.opts.query === "string") { + _this.opts.query = decode(_this.opts.query); + } // set on handshake + + + _this.id = null; + _this.upgrades = null; + _this.pingInterval = null; + _this.pingTimeout = null; // set on heartbeat + + _this.pingTimeoutTimer = null; + + if (typeof addEventListener === "function") { + if (_this.opts.closeOnBeforeunload) { + // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener + // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is + // closed/reloaded) + _this.beforeunloadEventListener = function () { + if (_this.transport) { + // silently close the transport + _this.transport.removeAllListeners(); + + _this.transport.close(); + } + }; + + addEventListener("beforeunload", _this.beforeunloadEventListener, false); + } + + if (_this.hostname !== "localhost") { + _this.offlineEventListener = function () { + _this.onClose("transport close", { + description: "network connection lost" + }); + }; + + addEventListener("offline", _this.offlineEventListener, false); + } + } + + _this.open(); + + return _this; + } + /** + * Creates transport of the given type. + * + * @param {String} name - transport name + * @return {Transport} + * @private + */ + + + _createClass(Socket, [{ + key: "createTransport", + value: function createTransport(name) { + var query = _extends({}, this.opts.query); // append engine.io protocol identifier + + + query.EIO = protocol$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.transportOptions[name], this.opts, { + query: query, + socket: this, + hostname: this.hostname, + secure: this.secure, + port: this.port + }); + + return new transports[name](opts); + } + /** + * Initializes transport to use and starts probe. + * + * @private + */ + + }, { + key: "open", + value: function open() { + var _this2 = this; + + var transport; + + if (this.opts.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1) { + transport = "websocket"; + } else if (0 === this.transports.length) { + // Emit error on next tick so it can be listened to + this.setTimeoutFn(function () { + _this2.emitReserved("error", "No transports available"); + }, 0); + return; + } else { + transport = this.transports[0]; + } + + this.readyState = "opening"; // Retry with the next transport if the transport is disabled (jsonp: false) + + try { + transport = this.createTransport(transport); + } catch (e) { + this.transports.shift(); + this.open(); + return; + } + + transport.open(); + this.setTransport(transport); + } + /** + * Sets the current transport. Disables the existing one (if any). + * + * @private + */ + + }, { + key: "setTransport", + value: function setTransport(transport) { + var _this3 = this; + + if (this.transport) { + this.transport.removeAllListeners(); + } // set up transport + + + this.transport = transport; // set up transport listeners + + transport.on("drain", this.onDrain.bind(this)).on("packet", this.onPacket.bind(this)).on("error", this.onError.bind(this)).on("close", function (reason) { + return _this3.onClose("transport close", reason); + }); + } + /** + * Probes a transport. + * + * @param {String} name - transport name + * @private + */ + + }, { + key: "probe", + value: function probe(name) { + var _this4 = this; + + var transport = this.createTransport(name); + var failed = false; + Socket.priorWebsocketSuccess = false; + + var onTransportOpen = function onTransportOpen() { + if (failed) return; + transport.send([{ + type: "ping", + data: "probe" + }]); + transport.once("packet", function (msg) { + if (failed) return; + + if ("pong" === msg.type && "probe" === msg.data) { + _this4.upgrading = true; + + _this4.emitReserved("upgrading", transport); + + if (!transport) return; + Socket.priorWebsocketSuccess = "websocket" === transport.name; + + _this4.transport.pause(function () { + if (failed) return; + if ("closed" === _this4.readyState) return; + cleanup(); + + _this4.setTransport(transport); + + transport.send([{ + type: "upgrade" + }]); + + _this4.emitReserved("upgrade", transport); + + transport = null; + _this4.upgrading = false; + + _this4.flush(); + }); + } else { + var err = new Error("probe error"); // @ts-ignore + + err.transport = transport.name; + + _this4.emitReserved("upgradeError", err); + } + }); + }; + + function freezeTransport() { + if (failed) return; // Any callback called by transport should be ignored since now + + failed = true; + cleanup(); + transport.close(); + transport = null; + } // Handle any error that happens while probing + + + var onerror = function onerror(err) { + var error = new Error("probe error: " + err); // @ts-ignore + + error.transport = transport.name; + freezeTransport(); + + _this4.emitReserved("upgradeError", error); + }; + + function onTransportClose() { + onerror("transport closed"); + } // When the socket is closed while we're probing + + + function onclose() { + onerror("socket closed"); + } // When the socket is upgraded while we're probing + + + function onupgrade(to) { + if (transport && to.name !== transport.name) { + freezeTransport(); + } + } // Remove all listeners on the transport and on self + + + var cleanup = function cleanup() { + transport.removeListener("open", onTransportOpen); + transport.removeListener("error", onerror); + transport.removeListener("close", onTransportClose); + + _this4.off("close", onclose); + + _this4.off("upgrading", onupgrade); + }; + + transport.once("open", onTransportOpen); + transport.once("error", onerror); + transport.once("close", onTransportClose); + this.once("close", onclose); + this.once("upgrading", onupgrade); + transport.open(); + } + /** + * Called when connection is deemed open. + * + * @private + */ + + }, { + key: "onOpen", + value: function onOpen() { + this.readyState = "open"; + Socket.priorWebsocketSuccess = "websocket" === this.transport.name; + this.emitReserved("open"); + this.flush(); // we check for `readyState` in case an `open` + // listener already closed the socket + + if ("open" === this.readyState && this.opts.upgrade) { + var i = 0; + var l = this.upgrades.length; + + for (; i < l; i++) { + this.probe(this.upgrades[i]); + } + } + } + /** + * Handles a packet. + * + * @private + */ + + }, { + key: "onPacket", + value: function onPacket(packet) { + if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) { + this.emitReserved("packet", packet); // Socket is live - any packet counts + + this.emitReserved("heartbeat"); + + switch (packet.type) { + case "open": + this.onHandshake(JSON.parse(packet.data)); + break; + + case "ping": + this.resetPingTimeout(); + this.sendPacket("pong"); + this.emitReserved("ping"); + this.emitReserved("pong"); + break; + + case "error": + var err = new Error("server error"); // @ts-ignore + + err.code = packet.data; + this.onError(err); + break; + + case "message": + this.emitReserved("data", packet.data); + this.emitReserved("message", packet.data); + break; + } + } + } + /** + * Called upon handshake completion. + * + * @param {Object} data - handshake obj + * @private + */ + + }, { + key: "onHandshake", + value: function onHandshake(data) { + this.emitReserved("handshake", data); + this.id = data.sid; + this.transport.query.sid = data.sid; + this.upgrades = this.filterUpgrades(data.upgrades); + this.pingInterval = data.pingInterval; + this.pingTimeout = data.pingTimeout; + this.maxPayload = data.maxPayload; + this.onOpen(); // In case open handler closes socket + + if ("closed" === this.readyState) return; + this.resetPingTimeout(); + } + /** + * Sets and resets ping timeout timer based on server pings. + * + * @private + */ + + }, { + key: "resetPingTimeout", + value: function resetPingTimeout() { + var _this5 = this; + + this.clearTimeoutFn(this.pingTimeoutTimer); + this.pingTimeoutTimer = this.setTimeoutFn(function () { + _this5.onClose("ping timeout"); + }, this.pingInterval + this.pingTimeout); + + if (this.opts.autoUnref) { + this.pingTimeoutTimer.unref(); + } + } + /** + * Called on `drain` event + * + * @private + */ + + }, { + key: "onDrain", + value: function onDrain() { + this.writeBuffer.splice(0, this.prevBufferLen); // setting prevBufferLen = 0 is very important + // for example, when upgrading, upgrade packet is sent over, + // and a nonzero prevBufferLen could cause problems on `drain` + + this.prevBufferLen = 0; + + if (0 === this.writeBuffer.length) { + this.emitReserved("drain"); + } else { + this.flush(); + } + } + /** + * Flush write buffers. + * + * @private + */ + + }, { + key: "flush", + value: function flush() { + if ("closed" !== this.readyState && this.transport.writable && !this.upgrading && this.writeBuffer.length) { + var packets = this.getWritablePackets(); + this.transport.send(packets); // keep track of current length of writeBuffer + // splice writeBuffer and callbackBuffer on `drain` + + this.prevBufferLen = packets.length; + this.emitReserved("flush"); + } + } + /** + * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP + * long-polling) + * + * @private + */ + + }, { + key: "getWritablePackets", + value: function getWritablePackets() { + var shouldCheckPayloadSize = this.maxPayload && this.transport.name === "polling" && this.writeBuffer.length > 1; + + if (!shouldCheckPayloadSize) { + return this.writeBuffer; + } + + var payloadSize = 1; // first packet type + + for (var i = 0; i < this.writeBuffer.length; i++) { + var data = this.writeBuffer[i].data; + + if (data) { + payloadSize += byteLength(data); + } + + if (i > 0 && payloadSize > this.maxPayload) { + return this.writeBuffer.slice(0, i); + } + + payloadSize += 2; // separator + packet type + } + + return this.writeBuffer; + } + /** + * Sends a message. + * + * @param {String} msg - message. + * @param {Object} options. + * @param {Function} callback function. + * @return {Socket} for chaining. + */ + + }, { + key: "write", + value: function write(msg, options, fn) { + this.sendPacket("message", msg, options, fn); + return this; + } + }, { + key: "send", + value: function send(msg, options, fn) { + this.sendPacket("message", msg, options, fn); + return this; + } + /** + * Sends a packet. + * + * @param {String} type: packet type. + * @param {String} data. + * @param {Object} options. + * @param {Function} fn - callback function. + * @private + */ + + }, { + key: "sendPacket", + value: function sendPacket(type, data, options, fn) { + if ("function" === typeof data) { + fn = data; + data = undefined; + } + + if ("function" === typeof options) { + fn = options; + options = null; + } + + if ("closing" === this.readyState || "closed" === this.readyState) { + return; + } + + options = options || {}; + options.compress = false !== options.compress; + var packet = { + type: type, + data: data, + options: options + }; + this.emitReserved("packetCreate", packet); + this.writeBuffer.push(packet); + if (fn) this.once("flush", fn); + this.flush(); + } + /** + * Closes the connection. + */ + + }, { + key: "close", + value: function close() { + var _this6 = this; + + var close = function close() { + _this6.onClose("forced close"); + + _this6.transport.close(); + }; + + var cleanupAndClose = function cleanupAndClose() { + _this6.off("upgrade", cleanupAndClose); + + _this6.off("upgradeError", cleanupAndClose); + + close(); + }; + + var waitForUpgrade = function waitForUpgrade() { + // wait for upgrade to finish since we can't send packets while pausing a transport + _this6.once("upgrade", cleanupAndClose); + + _this6.once("upgradeError", cleanupAndClose); + }; + + if ("opening" === this.readyState || "open" === this.readyState) { + this.readyState = "closing"; + + if (this.writeBuffer.length) { + this.once("drain", function () { + if (_this6.upgrading) { + waitForUpgrade(); + } else { + close(); + } + }); + } else if (this.upgrading) { + waitForUpgrade(); + } else { + close(); + } + } + + return this; + } + /** + * Called upon transport error + * + * @private + */ + + }, { + key: "onError", + value: function onError(err) { + Socket.priorWebsocketSuccess = false; + this.emitReserved("error", err); + this.onClose("transport error", err); + } + /** + * Called upon transport close. + * + * @private + */ + + }, { + key: "onClose", + value: function onClose(reason, description) { + if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) { + // clear timers + this.clearTimeoutFn(this.pingTimeoutTimer); // stop event from firing again for transport + + this.transport.removeAllListeners("close"); // ensure transport won't stay open + + this.transport.close(); // ignore further transport communication + + this.transport.removeAllListeners(); + + if (typeof removeEventListener === "function") { + removeEventListener("beforeunload", this.beforeunloadEventListener, false); + removeEventListener("offline", this.offlineEventListener, false); + } // set ready state + + + this.readyState = "closed"; // clear session id + + this.id = null; // emit close event + + this.emitReserved("close", reason, description); // clean buffers after, so users can still + // grab the buffers on `close` event + + this.writeBuffer = []; + this.prevBufferLen = 0; + } + } + /** + * Filters upgrades, returning only those matching client transports. + * + * @param {Array} upgrades - server upgrades + * @private + */ + + }, { + key: "filterUpgrades", + value: function filterUpgrades(upgrades) { + var filteredUpgrades = []; + var i = 0; + var j = upgrades.length; + + for (; i < j; i++) { + if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]); + } + + return filteredUpgrades; + } + }]); + + return Socket; + }(Emitter); + Socket$1.protocol = protocol$1; + + Socket$1.protocol; + + /** + * URL parser. + * + * @param uri - url + * @param path - the request path of the connection + * @param loc - An object meant to mimic window.location. + * Defaults to window.location. + * @public + */ + + function url(uri) { + var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ""; + var loc = arguments.length > 2 ? arguments[2] : undefined; + var obj = uri; // default to window.location + + loc = loc || typeof location !== "undefined" && location; + if (null == uri) uri = loc.protocol + "//" + loc.host; // relative path support + + if (typeof uri === "string") { + if ("/" === uri.charAt(0)) { + if ("/" === uri.charAt(1)) { + uri = loc.protocol + uri; + } else { + uri = loc.host + uri; + } + } + + if (!/^(https?|wss?):\/\//.test(uri)) { + if ("undefined" !== typeof loc) { + uri = loc.protocol + "//" + uri; + } else { + uri = "https://" + uri; + } + } // parse + + + obj = parse(uri); + } // make sure we treat `localhost:80` and `localhost` equally + + + if (!obj.port) { + if (/^(http|ws)$/.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", "connect_error", "disconnect", "disconnecting", "newListener", "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) { + _classCallCheck(this, Encoder); + + 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 + */ + + + _createClass(Encoder, [{ + key: "encode", + value: 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. + */ + + }, { + key: "encodeAsString", + value: 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. + */ + + }, { + key: "encodeAsBinary", + value: 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; + }(); // 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]"; + } + /** + * A socket.io Decoder instance + * + * @return {Object} decoder + */ + + + var Decoder = /*#__PURE__*/function (_Emitter) { + _inherits(Decoder, _Emitter); + + var _super = _createSuper(Decoder); + + /** + * Decoder constructor + * + * @param {function} reviver - custom reviver to pass down to JSON.stringify + */ + function Decoder(reviver) { + var _this; + + _classCallCheck(this, Decoder); + + _this = _super.call(this); + _this.reviver = reviver; + return _this; + } + /** + * Decodes an encoded packet string into packet JSON. + * + * @param {String} obj - encoded packet + */ + + + _createClass(Decoder, [{ + key: "add", + value: 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) { + _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet); + } + } else { + // non-binary full packet + _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).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; + + _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet); + } + } + } else { + throw new Error("Unknown type: " + obj); + } + } + /** + * Decode a packet String (JSON data) + * + * @param {String} str + * @return {Object} packet + */ + + }, { + key: "decodeString", + value: 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; + } + }, { + key: "tryParse", + value: function tryParse(str) { + try { + return JSON.parse(str, this.reviver); + } catch (e) { + return false; + } + } + }, { + key: "destroy", + value: + /** + * Deallocates a parser's resources + */ + function destroy() { + if (this.reconstructor) { + this.reconstructor.finishedReconstruction(); + this.reconstructor = null; + } + } + }], [{ + key: "isPayloadValid", + value: 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); + } + } + }]); + + 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) { + _classCallCheck(this, BinaryReconstructor); + + 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. + */ + + + _createClass(BinaryReconstructor, [{ + key: "takeBinaryData", + value: 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. + */ + + }, { + key: "finishedReconstruction", + value: function finishedReconstruction() { + this.reconPack = null; + this.buffers = []; + } + }]); + + return BinaryReconstructor; + }(); + + var parser = /*#__PURE__*/Object.freeze({ + __proto__: null, + protocol: protocol, + get PacketType () { return PacketType; }, + Encoder: Encoder, + Decoder: Decoder + }); + + function on(obj, ev, fn) { + obj.on(ev, fn); + return function subDestroy() { + obj.off(ev, fn); + }; + } + + /** + * 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) { + _inherits(Socket, _Emitter); + + var _super = _createSuper(Socket); + + /** + * `Socket` constructor. + */ + function Socket(io, nsp, opts) { + var _this; + + _classCallCheck(this, Socket); + + _this = _super.call(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; + _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 + * }); + */ + + + _createClass(Socket, [{ + key: "disconnected", + get: function get() { + return !this.connected; + } + /** + * Subscribe to open, close and packet events + * + * @private + */ + + }, { + key: "subEvents", + value: 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 + * }); + */ + + }, { + key: "active", + get: function get() { + return !!this.subs; + } + /** + * "Opens" the socket. + * + * @example + * const socket = io({ + * autoConnect: false + * }); + * + * socket.connect(); + */ + + }, { + key: "connect", + value: 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()}. + */ + + }, { + key: "open", + value: 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 + */ + + }, { + key: "send", + value: 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 + */ + + }, { + key: "emit", + value: function emit(ev) { + 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++; + var ack = args.pop(); + + this._registerAckCallback(id, ack); + + packet.id = id; + } + + var isTransportWritable = this.io.engine && this.io.engine.transport && this.io.engine.transport.writable; + var discardPacket = this.flags["volatile"] && (!isTransportWritable || !this.connected); + + if (discardPacket) ; else if (this.connected) { + this.notifyOutgoingListeners(packet); + this.packet(packet); + } else { + this.sendBuffer.push(packet); + } + + this.flags = {}; + return this; + } + /** + * @private + */ + + }, { + key: "_registerAckCallback", + value: 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) { + _this2.sendBuffer.splice(i, 1); + } + } + + ack.call(_this2, new Error("operation has timed out")); + }, timeout); + + this.acks[id] = function () { + // @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, [null].concat(args)); + }; + } + /** + * 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 + */ + + }, { + key: "emitWithAck", + value: 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]; + } + + // the timeout flag is optional + var withErr = this.flags.timeout !== undefined || this._opts.ackTimeout !== undefined; + return new Promise(function (resolve, reject) { + args.push(function (arg1, arg2) { + if (withErr) { + return arg1 ? reject(arg1) : resolve(arg2); + } else { + return resolve(arg1); + } + }); + + _this3.emit.apply(_this3, [ev].concat(args)); + }); + } + /** + * Add the packet to the queue. + * @param args + * @private + */ + + }, { + key: "_addToQueue", + value: 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) { + _this4._queue.shift(); + + if (ack) { + ack(err); + } + } + } else { + _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 + */ + + }, { + key: "_drainQueue", + value: function _drainQueue() { + var force = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false; + + if (!this.connected || this._queue.length === 0) { + return; + } + + var packet = this._queue[0]; + + if (packet.pending && !force) { + return; + } + + packet.pending = true; + packet.tryCount++; + this.flags = packet.flags; + this.emit.apply(this, packet.args); + } + /** + * Sends a packet. + * + * @param packet + * @private + */ + + }, { + key: "packet", + value: function packet(_packet) { + _packet.nsp = this.nsp; + + this.io._packet(_packet); + } + /** + * Called upon engine `open`. + * + * @private + */ + + }, { + key: "onopen", + value: function onopen() { + var _this5 = this; + + 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 + */ + + }, { + key: "_sendConnectPacket", + value: 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 + */ + + }, { + key: "onerror", + value: function onerror(err) { + if (!this.connected) { + this.emitReserved("connect_error", err); + } + } + /** + * Called upon engine `close`. + * + * @param reason + * @param description + * @private + */ + + }, { + key: "onclose", + value: function onclose(reason, description) { + this.connected = false; + delete this.id; + this.emitReserved("disconnect", reason, description); + } + /** + * Called with socket packet. + * + * @param packet + * @private + */ + + }, { + key: "onpacket", + value: 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 + */ + + }, { + key: "onevent", + value: function onevent(packet) { + var args = packet.data || []; + + if (null != packet.id) { + args.push(this.ack(packet.id)); + } + + if (this.connected) { + this.emitEvent(args); + } else { + this.receiveBuffer.push(Object.freeze(args)); + } + } + }, { + key: "emitEvent", + value: 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(); + } + } + + _get(_getPrototypeOf(Socket.prototype), "emit", this).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 + */ + + }, { + key: "ack", + value: 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]; + } + + self.packet({ + type: PacketType.ACK, + id: id, + data: args + }); + }; + } + /** + * Called upon a server acknowlegement. + * + * @param packet + * @private + */ + + }, { + key: "onack", + value: function onack(packet) { + var ack = this.acks[packet.id]; + + if ("function" === typeof ack) { + ack.apply(this, packet.data); + delete this.acks[packet.id]; + } + } + /** + * Called upon server connect. + * + * @private + */ + + }, { + key: "onconnect", + value: function onconnect(id, pid) { + 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 + */ + + }, { + key: "emitBuffered", + value: function emitBuffered() { + var _this6 = this; + + this.receiveBuffer.forEach(function (args) { + return _this6.emitEvent(args); + }); + this.receiveBuffer = []; + this.sendBuffer.forEach(function (packet) { + _this6.notifyOutgoingListeners(packet); + + _this6.packet(packet); + }); + this.sendBuffer = []; + } + /** + * Called upon server disconnect. + * + * @private + */ + + }, { + key: "ondisconnect", + value: function ondisconnect() { + 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 + */ + + }, { + key: "destroy", + value: 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 + */ + + }, { + key: "disconnect", + value: function disconnect() { + if (this.connected) { + 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 + */ + + }, { + key: "close", + value: 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 + */ + + }, { + key: "compress", + value: 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 + */ + + }, { + key: "volatile", + get: function get() { + this.flags["volatile"] = true; + return this; + } + /** + * 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 + */ + + }, { + key: "timeout", + value: 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 + */ + + }, { + key: "onAny", + value: 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 + */ + + }, { + key: "prependAny", + value: 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 + */ + + }, { + key: "offAny", + value: 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. + */ + + }, { + key: "listenersAny", + value: 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 + */ + + }, { + key: "onAnyOutgoing", + value: 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 + */ + + }, { + key: "prependAnyOutgoing", + value: 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) + */ + + }, { + key: "offAnyOutgoing", + value: 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. + */ + + }, { + key: "listenersAnyOutgoing", + value: function listenersAnyOutgoing() { + return this._anyOutgoingListeners || []; + } + /** + * Notify the listeners for each packet sent + * + * @param packet + * + * @private + */ + + }, { + key: "notifyOutgoingListeners", + value: 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 Socket; + }(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 Manager = /*#__PURE__*/function (_Emitter) { + _inherits(Manager, _Emitter); + + var _super = _createSuper(Manager); + + function Manager(uri, opts) { + var _this; + + _classCallCheck(this, Manager); + + var _a; + + _this = _super.call(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(_assertThisInitialized(_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; + } + + _createClass(Manager, [{ + key: "reconnection", + value: function reconnection(v) { + if (!arguments.length) return this._reconnection; + this._reconnection = !!v; + return this; + } + }, { + key: "reconnectionAttempts", + value: function reconnectionAttempts(v) { + if (v === undefined) return this._reconnectionAttempts; + this._reconnectionAttempts = v; + return this; + } + }, { + key: "reconnectionDelay", + value: 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; + } + }, { + key: "randomizationFactor", + value: 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; + } + }, { + key: "reconnectionDelayMax", + value: 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; + } + }, { + key: "timeout", + value: 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 + */ + + }, { + key: "maybeReconnectOnOpen", + value: 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 + */ + + }, { + key: "open", + value: function open(fn) { + var _this2 = this; + + if (~this._readyState.indexOf("open")) return this; + 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(); + }); // emit `error` + + var errorSub = on(socket, "error", function (err) { + self.cleanup(); + self._readyState = "closed"; + + _this2.emitReserved("error", err); + + if (fn) { + fn(err); + } else { + // Only do this if there is no fn to handle the error + self.maybeReconnectOnOpen(); + } + }); + + if (false !== this._timeout) { + var timeout = this._timeout; + + if (timeout === 0) { + openSubDestroy(); // prevents a race condition with the 'open' event + } // set timer + + + var timer = this.setTimeoutFn(function () { + openSubDestroy(); + socket.close(); // @ts-ignore + + socket.emit("error", new Error("timeout")); + }, timeout); + + if (this.opts.autoUnref) { + timer.unref(); + } + + this.subs.push(function subDestroy() { + clearTimeout(timer); + }); + } + + this.subs.push(openSubDestroy); + this.subs.push(errorSub); + return this; + } + /** + * Alias for open() + * + * @return self + * @public + */ + + }, { + key: "connect", + value: function connect(fn) { + return this.open(fn); + } + /** + * Called upon transport open. + * + * @private + */ + + }, { + key: "onopen", + value: function onopen() { + // 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)), on(this.decoder, "decoded", this.ondecoded.bind(this))); + } + /** + * Called upon a ping. + * + * @private + */ + + }, { + key: "onping", + value: function onping() { + this.emitReserved("ping"); + } + /** + * Called with data. + * + * @private + */ + + }, { + key: "ondata", + value: function ondata(data) { + try { + this.decoder.add(data); + } catch (e) { + this.onclose("parse error", e); + } + } + /** + * Called when parser fully decodes a packet. + * + * @private + */ + + }, { + key: "ondecoded", + value: 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 + */ + + }, { + key: "onerror", + value: function onerror(err) { + this.emitReserved("error", err); + } + /** + * Creates a new socket for the given `nsp`. + * + * @return {Socket} + * @public + */ + + }, { + key: "socket", + value: 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 + */ + + }, { + key: "_destroy", + value: 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) { + return; + } + } + + this._close(); + } + /** + * Writes a packet. + * + * @param packet + * @private + */ + + }, { + key: "_packet", + value: function _packet(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 + */ + + }, { + key: "cleanup", + value: function cleanup() { + this.subs.forEach(function (subDestroy) { + return subDestroy(); + }); + this.subs.length = 0; + this.decoder.destroy(); + } + /** + * Close the current socket. + * + * @private + */ + + }, { + key: "_close", + value: function _close() { + this.skipReconnect = true; + this._reconnecting = false; + this.onclose("forced close"); + if (this.engine) this.engine.close(); + } + /** + * Alias for close() + * + * @private + */ + + }, { + key: "disconnect", + value: function disconnect() { + return this._close(); + } + /** + * Called upon engine close. + * + * @private + */ + + }, { + key: "onclose", + value: function onclose(reason, description) { + this.cleanup(); + this.backoff.reset(); + this._readyState = "closed"; + this.emitReserved("close", reason, description); + + if (this._reconnection && !this.skipReconnect) { + this.reconnect(); + } + } + /** + * Attempt a reconnection. + * + * @private + */ + + }, { + key: "reconnect", + value: function reconnect() { + var _this4 = this; + + if (this._reconnecting || this.skipReconnect) return this; + var self = this; + + if (this.backoff.attempts >= this._reconnectionAttempts) { + this.backoff.reset(); + this.emitReserved("reconnect_failed"); + this._reconnecting = false; + } else { + var delay = this.backoff.duration(); + this._reconnecting = true; + var timer = this.setTimeoutFn(function () { + if (self.skipReconnect) return; + + _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) { + self._reconnecting = false; + self.reconnect(); + + _this4.emitReserved("reconnect_error", err); + } else { + self.onreconnect(); + } + }); + }, delay); + + if (this.opts.autoUnref) { + timer.unref(); + } + + this.subs.push(function subDestroy() { + clearTimeout(timer); + }); + } + } + /** + * Called upon successful reconnect. + * + * @private + */ + + }, { + key: "onreconnect", + value: function onreconnect() { + var attempt = this.backoff.attempts; + this._reconnecting = false; + this.backoff.reset(); + this.emitReserved("reconnect", attempt); + } + }]); + + return Manager; + }(Emitter); + + /** + * 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) { + io = new Manager(source, opts); + } else { + if (!cache[id]) { + 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