From 60e7aa96978e890dcfc244071de0284e9174e125 Mon Sep 17 00:00:00 2001
From: Jakob Ackermann <jakob.ackermann@overleaf.com>
Date: Thu, 13 Aug 2020 10:19:45 +0100
Subject: [PATCH] [misc] release 0.9.17-overleaf-3

---
 History.md            | 8 ++++++++
 dist/socket.io.js     | 4 ++--
 dist/socket.io.min.js | 4 ++--
 lib/io.js             | 2 +-
 package.json          | 2 +-
 5 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/History.md b/History.md
index 1ca1fb09f..8efe4c6c0 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,11 @@
+0.9.17-overleaf-3 / 2020-08-13
+==============================
+
+ * Overleaf: harden the cleanup of sockets/transports
+    Delayed inflight of packages may trigger a heartbeat after closing the
+     transport.
+    https://github.com/overleaf/issues/issues/3371
+
 0.9.17-overleaf-2 / 2020-07-30
 ==============================
 
diff --git a/dist/socket.io.js b/dist/socket.io.js
index 048a2ad36..091a01f3c 100644
--- a/dist/socket.io.js
+++ b/dist/socket.io.js
@@ -1,4 +1,4 @@
-/*! Socket.IO.js build:0.9.17-overleaf-2, development. Copyright(c) 2011 LearnBoost <dev@learnboost.com> MIT Licensed */
+/*! Socket.IO.js build:0.9.17-overleaf-3, development. Copyright(c) 2011 LearnBoost <dev@learnboost.com> MIT Licensed */
 
 var io = ('undefined' === typeof module ? {} : module.exports);
 (function() {
@@ -25,7 +25,7 @@ var io = ('undefined' === typeof module ? {} : module.exports);
    * @api public
    */
 
-  io.version = '0.9.17-overleaf-2';
+  io.version = '0.9.17-overleaf-3';
 
   /**
    * Protocol implemented.
diff --git a/dist/socket.io.min.js b/dist/socket.io.min.js
index 80fb6d323..122787460 100644
--- a/dist/socket.io.min.js
+++ b/dist/socket.io.min.js
@@ -1,2 +1,2 @@
-/*! Socket.IO.min.js build:0.9.17-overleaf-2, production. Copyright(c) 2011 LearnBoost <dev@learnboost.com> MIT Licensed */
-var io="undefined"==typeof module?{}:module.exports;(function(){(function(a,b){var c=a;c.version="0.9.17-overleaf-2",c.protocol=1,c.transports=[],c.j=[],c.sockets={},c.connect=function(a,d){var e=c.util.parseUri(a),f,g;b&&b.location&&(e.protocol=e.protocol||b.location.protocol.slice(0,-1),e.host=e.host||(b.document?b.document.domain:b.location.hostname),e.port=e.port||b.location.port),f=c.util.uniqueUri(e);var h={host:e.host,secure:"https"==e.protocol,port:e.port||("https"==e.protocol?443:80),query:e.query||""};c.util.merge(h,d);if(h["force new connection"]||!c.sockets[f])g=new c.Socket(h);return!h["force new connection"]&&g&&(c.sockets[f]=g),g=g||c.sockets[f],g.of(e.path.length>1?e.path:"")}})("object"==typeof module?module.exports:this.io={},this),function(a,b){var c=a.util={},d=/^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/,e=["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"];c.parseUri=function(a){var b=d.exec(a||""),c={},f=14;while(f--)c[e[f]]=b[f]||"";return c},c.uniqueUri=function(a){var c=a.protocol,d=a.host,e=a.port;return"document"in b?(d=d||document.domain,e=e||(c=="https"&&document.location.protocol!=="https:"?443:document.location.port)):(d=d||"localhost",!e&&c=="https"&&(e=443)),(c||"http")+"://"+d+":"+(e||80)},c.query=function(a,b){var d=c.chunkQuery(a||""),e=[];c.merge(d,c.chunkQuery(b||""));for(var f in d)d.hasOwnProperty(f)&&e.push(f+"="+d[f]);return e.length?"?"+e.join("&"):""},c.chunkQuery=function(a){var b={},c=a.split("&"),d=0,e=c.length,f;for(;d<e;++d)f=c[d].split("="),f[0]&&(b[f[0]]=f[1]);return b};var f=!1;c.load=function(a){if("document"in b&&document.readyState==="complete"||f)return a();c.on(b,"load",a,!1)},c.on=function(a,b,c,d){a.attachEvent?a.attachEvent("on"+b,c):a.addEventListener&&a.addEventListener(b,c,d)},c.request=function(a){if(a&&"undefined"!=typeof XDomainRequest&&!c.ua.hasCORS)return new XDomainRequest;if("undefined"!=typeof XMLHttpRequest&&(!a||c.ua.hasCORS))return new XMLHttpRequest;if(!a)try{return new(window[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(b){}return null},"undefined"!=typeof window&&c.load(function(){f=!0}),c.defer=function(a){if(!c.ua.webkit||"undefined"!=typeof importScripts)return a();c.load(function(){setTimeout(a,100)})},c.merge=function(b,d,e,f){var g=f||[],h=typeof e=="undefined"?2:e,i;for(i in d)d.hasOwnProperty(i)&&c.indexOf(g,i)<0&&(typeof b[i]!="object"||!h?(b[i]=d[i],g.push(d[i])):c.merge(b[i],d[i],h-1,g));return b},c.mixin=function(a,b){c.merge(a.prototype,b.prototype)},c.inherit=function(a,b){function c(){}c.prototype=b.prototype,a.prototype=new c},c.isArray=Array.isArray||function(a){return Object.prototype.toString.call(a)==="[object Array]"},c.intersect=function(a,b){var d=[],e=a.length>b.length?a:b,f=a.length>b.length?b:a;for(var g=0,h=f.length;g<h;g++)~c.indexOf(e,f[g])&&d.push(f[g]);return d},c.indexOf=function(a,b,c){for(var d=a.length,c=c<0?c+d<0?0:c+d:c||0;c<d&&a[c]!==b;c++);return d<=c?-1:c},c.toArray=function(a){var b=[];for(var c=0,d=a.length;c<d;c++)b.push(a[c]);return b},c.ua={},c.ua.hasCORS="undefined"!=typeof XMLHttpRequest&&function(){try{var a=new XMLHttpRequest}catch(b){return!1}return a.withCredentials!=undefined}(),c.ua.webkit="undefined"!=typeof navigator&&/webkit/i.test(navigator.userAgent),c.ua.iDevice="undefined"!=typeof navigator&&/iPad|iPhone|iPod/i.test(navigator.userAgent)}("undefined"!=typeof io?io:module.exports,this),function(a,b){function c(){}a.EventEmitter=c,c.prototype.on=function(a,c){return this.$events||(this.$events={}),this.$events[a]?b.util.isArray(this.$events[a])?this.$events[a].push(c):this.$events[a]=[this.$events[a],c]:this.$events[a]=c,this},c.prototype.addListener=c.prototype.on,c.prototype.once=function(a,b){function d(){c.removeListener(a,d),b.apply(this,arguments)}var c=this;return d.listener=b,this.on(a,d),this},c.prototype.removeListener=function(a,c){if(this.$events&&this.$events[a]){var d=this.$events[a];if(b.util.isArray(d)){var e=-1;for(var f=0,g=d.length;f<g;f++)if(d[f]===c||d[f].listener&&d[f].listener===c){e=f;break}if(e<0)return this;d.splice(e,1),d.length||delete this.$events[a]}else(d===c||d.listener&&d.listener===c)&&delete this.$events[a]}return this},c.prototype.removeAllListeners=function(a){return a===undefined?(this.$events={},this):(this.$events&&this.$events[a]&&(this.$events[a]=null),this)},c.prototype.listeners=function(a){return 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c=a||this.transports,d;for(var e=0,f;f=c[e];e++)if(b.Transport[f]&&b.Transport[f].check(this)&&(!this.isXDomain()||b.Transport[f].xdomainCheck(this)))return new b.Transport[f](this,this.sessionid);return null},d.prototype.connect=function(a){if(this.connecting)return this;var c=this;return c.connecting=!0,this.handshake(function(d,e,f,g){function h(a){c.onClose(),c.transport&&c.transport.clearTimeouts(),c.transport=c.getTransport(a);if(!c.transport)return c.publish("connect_failed");c.transport.ready(c,function(){c.connecting=!0,c.publish("connecting",c.transport.name),c.transport.open(),c.options["connect timeout"]&&(c.connectTimeoutTimer=setTimeout(function(){if(!c.connected){c.connecting=!1;if(c.options["try multiple transports"]){var a=c.transports;while(a.length>0&&a.splice(0,1)[0]!=c.transport.name);a.length?h(a):c.publish("connect_failed")}}},c.options["connect timeout"]))})}c.sessionid=d,c.closeTimeout=f*1e3,c.heartbeatTimeout=e*1e3,c.transports||(c.transports=c.origTransports=g?b.util.intersect(g.split(","),c.options.transports):c.options.transports),c.setHeartbeatTimeout(),h(c.transports),c.once("connect",function(){clearTimeout(c.connectTimeoutTimer),a&&typeof a=="function"&&a()})}),this},d.prototype.setHeartbeatTimeout=function(){clearTimeout(this.heartbeatTimeoutTimer);if(this.transport&&!this.transport.heartbeats())return;var a=this;this.heartbeatTimeoutTimer=setTimeout(function(){a.transport&&a.transport.onClose()},this.heartbeatTimeout)},d.prototype.packet=function(a){return 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+/*! Socket.IO.min.js build:0.9.17-overleaf-3, production. Copyright(c) 2011 LearnBoost <dev@learnboost.com> MIT Licensed */
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j=g.parse(a);h.name=j.name,h.args=j.args}catch(k){}h.args=h.args||[];break;case"json":try{h.data=g.parse(a)}catch(k){}break;case"connect":h.qs=a||"";break;case"ack":var b=a.match(/^([0-9]+)(\+)?([\s\S]*)/);if(b){h.ackId=b[1],h.args=[];if(b[3])try{h.args=b[3]?g.parse(b[3]):[]}catch(k){}}break;case"disconnect":case"heartbeat":}return h},c.decodePayload=function(a){if(a.charAt(0)=="\ufffd"){var b=[];for(var d=1,e="";d<a.length;d++)a.charAt(d)=="\ufffd"?(b.push(c.decodePacket(a.substr(d+1).substr(0,e))),d+=Number(e)+1,e=""):e+=a.charAt(d);return b}return[c.decodePacket(a)]}}("undefined"!=typeof io?io:module.exports,"undefined"!=typeof io?io:module.parent.exports),function(a,b){function c(a,b){this.socket=a,this.sessid=b}a.Transport=c,b.util.mixin(c,b.EventEmitter),c.prototype.heartbeats=function(){return!0},c.prototype.onData=function(a){this.clearCloseTimeout(),(this.socket.connected||this.socket.connecting||this.socket.reconnecting)&&this.setCloseTimeout();if(a!==""){var c=b.parser.decodePayload(a);if(c&&c.length)for(var d=0,e=c.length;d<e;d++)this.onPacket(c[d])}return this},c.prototype.onPacket=function(a){return this.socket.setHeartbeatTimeout(),a.type=="heartbeat"?this.onHeartbeat():(a.type=="connect"&&a.endpoint==""&&this.onConnect(),a.type=="error"&&a.advice=="reconnect"&&(this.isOpen=!1),this.socket.onPacket(a),this)},c.prototype.setCloseTimeout=function(){if(!this.closeTimeout){var a=this;this.closeTimeout=setTimeout(function(){a.onDisconnect()},this.socket.closeTimeout)}},c.prototype.onDisconnect=function(){return this.isOpen&&this.close(),this.clearTimeouts(),this.socket.onDisconnect(),this},c.prototype.onConnect=function(){return this.socket.onConnect(),this},c.prototype.clearCloseTimeout=function(){this.closeTimeout&&(clearTimeout(this.closeTimeout),this.closeTimeout=null)},c.prototype.clearTimeouts=function(){this.clearCloseTimeout(),this.reopenTimeout&&clearTimeout(this.reopenTimeout)},c.prototype.packet=function(a){this.send(b.parser.encodePacket(a))},c.prototype.onHeartbeat=function(a){this.packet({type:"heartbeat"})},c.prototype.onOpen=function(){this.isOpen=!0,this.clearCloseTimeout(),this.socket.onOpen()},c.prototype.onClose=function(){var a=this;this.isOpen=!1,this.socket.onClose(),this.onDisconnect()},c.prototype.prepareUrl=function(){var a=this.socket.options;return this.scheme()+"://"+a.host+":"+a.port+"/"+a.resource+"/"+b.protocol+"/"+this.name+"/"+this.sessid},c.prototype.ready=function(a,b){b.call(this)}}("undefined"!=typeof io?io:module.exports,"undefined"!=typeof io?io:module.parent.exports),function(a,b,c){function d(a){this.options={port:80,secure:!1,document:"document"in c?document:!1,resource:"socket.io",transports:b.transports,"connect timeout":1e4,"try multiple transports":!0,reconnect:!0,"reconnection delay":500,"reconnection limit":Infinity,"reopen delay":3e3,"max reconnection attempts":10,"sync disconnect on unload":!1,"auto connect":!0,"flash policy port":10843,manualFlush:!1},b.util.merge(this.options,a),this.connected=!1,this.open=!1,this.connecting=!1,this.reconnecting=!1,this.namespaces={},this.buffer=[],this.doBuffer=!1;if(this.options["sync disconnect on unload"]&&(!this.isXDomain()||b.util.ua.hasCORS)){var d=this;b.util.on(c,"beforeunload",function(){d.disconnectSync()},!1)}this.options["auto connect"]&&this.connect()}function e(){}a.Socket=d,b.util.mixin(d,b.EventEmitter),d.prototype.of=function(a){return this.namespaces[a]||(this.namespaces[a]=new b.SocketNamespace(this,a),a!==""&&this.namespaces[a].packet({type:"connect"})),this.namespaces[a]},d.prototype.publish=function(){this.emit.apply(this,arguments);var a;for(var b in 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a=this.doc.createElement("div");a.className="socketio",this.doc.body.appendChild(a),this.iframe=this.doc.createElement("iframe"),a.appendChild(this.iframe);var c=this,d=b.util.query(this.socket.options.query,"t="+ +(new Date));this.iframe.src=this.prepareUrl()+d,b.util.on(window,"unload",function(){c.destroy()})},c.prototype._=function(a,b){a=a.replace(/\\\//g,"/"),this.onData(a);try{var c=b.getElementsByTagName("script")[0];c.parentNode.removeChild(c)}catch(d){}},c.prototype.destroy=function(){if(this.iframe){try{this.iframe.src="about:blank"}catch(a){}this.doc=null,this.iframe.parentNode.removeChild(this.iframe),this.iframe=null,CollectGarbage()}},c.prototype.close=function(){return this.destroy(),b.Transport.XHR.prototype.close.call(this)},c.check=function(a){if(typeof window!="undefined"&&["Active"].concat("Object").join("X")in window)try{var c=new(window[["Active"].concat("Object").join("X")])("htmlfile");return 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\ No newline at end of file
diff --git a/lib/io.js b/lib/io.js
index d47d9eea8..ea7b1b392 100644
--- a/lib/io.js
+++ b/lib/io.js
@@ -21,7 +21,7 @@
    * @api public
    */
 
-  io.version = '0.9.17-overleaf-2';
+  io.version = '0.9.17-overleaf-3';
 
   /**
    * Protocol implemented.
diff --git a/package.json b/package.json
index 0135f1822..38af17086 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "socket.io-client"
   , "description": "Socket.IO client for the browser and node.js"
-  , "version": "0.9.17-overleaf-2"
+  , "version": "0.9.17-overleaf-3"
   , "main" : "./lib/io.js"
   , "browserify": "./dist/socket.io.js"
   , "homepage": "http://socket.io"