diff --git a/hw7/Claudio_Maggioni/app.js b/hw7/Claudio_Maggioni/app.js
index 359fbf6..a7aee92 100644
--- a/hw7/Claudio_Maggioni/app.js
+++ b/hw7/Claudio_Maggioni/app.js
@@ -1,5 +1,6 @@
 // vim: set ts=2 sw=2 et tw=80:
 
+const debug = require('debug')('canvas-server');
 const express = require('express');
 const path = require('path');
 const logger = require('morgan');
@@ -28,19 +29,19 @@ app.set('view options', { layout: false });
 app.use(methodOverride('_method'));
 
 // parse application/x-www-form-urlencoded
-app.use(bodyParser.urlencoded({ extended: false }));
+app.use(bodyParser.urlencoded({ extended: false, limit: '50mb' }));
 
 // parse application/json
-app.use(bodyParser.json());
+app.use(bodyParser.json({ limit: '50mb' }));
 
 // Needed to make fetch_tests passs
-app.use(bodyParser.text({ type: '*/*' }));
+app.use(bodyParser.text({ type: '*/*', limit: '50mb' }));
 
 app.use(express.static('public'));
 
-
 // Initialize routers here
 const routers = require('./routes/routers');
+
 app.use('/', routers.root);
 // app.use('/favorites', routers.favourites_db);
 // app.use('/favorites', routers.favourites_db_promises);
@@ -48,4 +49,44 @@ app.use('/favorites', routers.favourites_db_asaw);
 app.use('/bookmarked', routers.bookmarked);
 app.use('/test/fetch', routers.fetch_tests);
 
+app.set('port', process.env.PORT || 3000);
+const server = app.listen(app.get('port'), function() {
+  debug('Express server listening on port ' + server.address().port);
+});
+
+// Socket.io code
+
+const io = require('socket.io')(server);
+
+let id = 1;
+
+io.on('connection', (socket) => {
+  console.log('client connected');
+
+  socket.emit('sessionId', { id: id++ });
+
+  socket.on('message', (msg) => {
+    console.log('message: ',msg);
+    msg.user = encodeURIComponent(msg.user);
+    msg.text = encodeURIComponent(msg.text);
+    socket.broadcast.emit('message', msg);
+  });
+
+  socket.on('disconnect', () => {
+    console.log('client disconnected');
+  });
+});
+
+const eventBus = require('./pubsub');
+
+eventBus.on('favorite.created', (event) => {
+  io.emit('favorite.created', event);
+});
+eventBus.on('favorite.updated', (event) => {
+  io.emit('favorite.updated', event);
+});
+eventBus.on('favorite.deleted', (event) => {
+  io.emit('favorite.deleted', event);
+});
+
 module.exports = app;
diff --git a/hw7/Claudio_Maggioni/bin/www b/hw7/Claudio_Maggioni/bin/www
index 6aa61f4..5b3eb8a 100755
--- a/hw7/Claudio_Maggioni/bin/www
+++ b/hw7/Claudio_Maggioni/bin/www
@@ -1,9 +1,3 @@
 #!/usr/bin/env node
-var debug = require('debug')('canvas-server');
 var app = require('../app');
 
-app.set('port', process.env.PORT || 3000);
-
-var server = app.listen(app.get('port'), function() {
-  debug('Express server listening on port ' + server.address().port);
-});
\ No newline at end of file
diff --git a/hw7/Claudio_Maggioni/package.json b/hw7/Claudio_Maggioni/package.json
index 0cc0ad8..b25c979 100644
--- a/hw7/Claudio_Maggioni/package.json
+++ b/hw7/Claudio_Maggioni/package.json
@@ -28,6 +28,7 @@
     "mongoose": "^5.7.7",
     "morgan": "^1.9.0",
     "request": "^2.88.0",
+    "socket.io": "^2.3.0",
     "supertest": "^3.0.0"
   },
   "devDependencies": {
diff --git a/hw7/Claudio_Maggioni/public/scripts/app.js b/hw7/Claudio_Maggioni/public/scripts/app.js
index 487dcec..10b01c6 100644
--- a/hw7/Claudio_Maggioni/public/scripts/app.js
+++ b/hw7/Claudio_Maggioni/public/scripts/app.js
@@ -11,6 +11,7 @@ class App {
   render_timestamp = 0;
   render_last = null;
   render_timeout = null;
+  socketSessionId = null;
 
   registerFavoriteEvents(_id, dom) {
     const form = dom.querySelector('form');
@@ -46,21 +47,22 @@ class App {
       const formData = new FormData(form);
       const name = formData.get('name');
       const dataURL = formData.get('dataURL');
+      const query = '?socketid=' + this.socketSessionId;
 
       switch (action) {
         case 'data-update':
-          p = doJSONRequest('PUT', '/favorites/' + _id, {},
+          p = doJSONRequest('PUT', '/favorites/' + _id + query, {},
             { name, dataURL });
           break;
         case 'data-delete':
-          p = doJSONRequest('DELETE', '/favorites/' + _id);
+          p = doJSONRequest('DELETE', '/favorites/' + _id + query);
           break;
         case 'data-bookmark':
-          p = doJSONRequest('PUT', `/favorites/${_id}/bookmarked`,
+          p = doJSONRequest('PUT', `/favorites/${_id}/bookmarked` + query,
             {}, { bookmarked: true });
           break;
         case 'data-del-bookmark':
-          p = doJSONRequest('PUT', `/favorites/${_id}/bookmarked`,
+          p = doJSONRequest('PUT', `/favorites/${_id}/bookmarked` + query,
             {}, { bookmarked: false });
           break;
         default:
@@ -151,6 +153,48 @@ class App {
       .catch(console.error);
   }
 
+  initSocket() {
+    const socket = io();
+
+    socket.on('connect', () => {
+      console.log("Socket connected");
+    });
+
+    socket.on('sessionId', (msg) => {
+      console.log("Socket session id is", msg.id);
+      this.socketSessionId = msg.id;
+    });
+
+    socket.on('disconnect', (reason) => {
+      console.log("Socket disconnected");
+    });
+
+    socket.on('reconnect', (attemptNumber) => {
+      console.log("Socket reconnected");
+    });
+
+    socket.on('favorite.created', (msg) => {
+      if (msg.socketid != this.socketSessionId) {
+        console.log(msg);
+        this.renderFavorite(msg, 'top');
+      }
+    });
+
+    socket.on('favorite.updated', (msg) => {
+      if (msg.socketid != this.socketSessionId) {
+        this.renderFavorite(msg, document
+          .getElementById('favorite_' + msg._id));
+      }
+      console.log(msg);
+    });
+
+    socket.on('favorite.deleted', (msg) => {
+      if (msg.socketid != this.socketSessionId) {
+        document.getElementById('favorite_' + msg._id).remove();
+      }
+    });
+  }
+
   constructor(conf) {
     if (!(typeof conf === 'object' && conf)) {
       throw new Error('Argument conf different from specification');
@@ -164,6 +208,7 @@ class App {
     this.ctx = this.canvas.getContext('2d');
     this.favourites = document.querySelector('div#favourites');
 
+    this.initSocket();
     this.getFavorites(false);
 
     const nameFilter = document.getElementById('name-filter');
@@ -211,7 +256,8 @@ class App {
             bookmarked: false
           };
 
-          doJSONRequest("POST", "/favorites", {}, data)
+          doJSONRequest("POST", "/favorites?socketid=" + this.socketSessionId,
+            {}, data)
             .then(data => this.renderFavorite(data, 'top'))
             .catch(console.error);
         });
@@ -225,6 +271,11 @@ class App {
           imgCanvas.width = this.canvas.width;
           imgCanvas.height = this.canvas.height;
           const img = document.createElement('img');
+          imgCanvas.getContext('2d').drawImage(player, 0, 0, imgCanvas.width,
+            imgCanvas.height);
+
+          console.log(imgCanvas.toDataURL());
+
           img.src = imgCanvas.toDataURL();
           img.addEventListener('load', () => {
             this.background = img;
diff --git a/hw7/Claudio_Maggioni/public/socket.io/socket.io.js b/hw7/Claudio_Maggioni/public/socket.io/socket.io.js
new file mode 100644
index 0000000..7257504
--- /dev/null
+++ b/hw7/Claudio_Maggioni/public/socket.io/socket.io.js
@@ -0,0 +1,9 @@
+/*!
+ * Socket.IO v2.3.0
+ * (c) 2014-2019 Guillermo Rauch
+ * Released under the MIT License.
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return t[r].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var n={};return e.m=t,e.c=n,e.p="",e(0)}([function(t,e,n){function r(t,e){"object"==typeof t&&(e=t,t=void 0),e=e||{};var n,r=o(t),i=r.source,u=r.id,p=r.path,h=c[u]&&p in c[u].nsps,f=e.forceNew||e["force new connection"]||!1===e.multiplex||h;return f?(a("ignoring socket cache for %s",i),n=s(i,e)):(c[u]||(a("new io instance for %s",i),c[u]=s(i,e)),n=c[u]),r.query&&!e.query&&(e.query=r.query),n.socket(r.path,e)}var o=n(1),i=n(7),s=n(15),a=n(3)("socket.io-client");t.exports=e=r;var c=e.managers={};e.protocol=i.protocol,e.connect=r,e.Manager=n(15),e.Socket=n(39)},function(t,e,n){function r(t,e){var n=t;e=e||"undefined"!=typeof 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location&&"https:"===location.protocol,e.hostname&&!e.port&&(e.port=this.secure?"443":"80"),this.agent=e.agent||!1,this.hostname=e.hostname||("undefined"!=typeof location?location.hostname:"localhost"),this.port=e.port||("undefined"!=typeof location&&location.port?location.port:this.secure?443:80),this.query=e.query||{},"string"==typeof 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0===e.rejectUnauthorized||e.rejectUnauthorized,this.forceNode=!!e.forceNode,this.isReactNative="undefined"!=typeof navigator&&"string"==typeof navigator.product&&"reactnative"===navigator.product.toLowerCase(),("undefined"==typeof self||this.isReactNative)&&(e.extraHeaders&&Object.keys(e.extraHeaders).length>0&&(this.extraHeaders=e.extraHeaders),e.localAddress&&(this.localAddress=e.localAddress)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingIntervalTimer=null,this.pingTimeoutTimer=null,void this.open()):new r(t,e)}function o(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}var i=n(18),s=n(11),a=n(3)("engine.io-client:socket"),c=n(38),u=n(24),p=n(2),h=n(32);t.exports=r,r.priorWebsocketSuccess=!1,s(r.prototype),r.protocol=u.protocol,r.Socket=r,r.Transport=n(23),r.transports=n(18),r.parser=n(24),r.prototype.createTransport=function(t){a('creating transport "%s"',t);var e=o(this.query);e.EIO=u.protocol,e.transport=t;var n=this.transportOptions[t]||{};this.id&&(e.sid=this.id);var r=new i[t]({query:e,socket:this,agent:n.agent||this.agent,hostname:n.hostname||this.hostname,port:n.port||this.port,secure:n.secure||this.secure,path:n.path||this.path,forceJSONP:n.forceJSONP||this.forceJSONP,jsonp:n.jsonp||this.jsonp,forceBase64:n.forceBase64||this.forceBase64,enablesXDR:n.enablesXDR||this.enablesXDR,withCredentials:n.withCredentials||this.withCredentials,timestampRequests:n.timestampRequests||this.timestampRequests,timestampParam:n.timestampParam||this.timestampParam,policyPort:n.policyPort||this.policyPort,pfx:n.pfx||this.pfx,key:n.key||this.key,passphrase:n.passphrase||this.passphrase,cert:n.cert||this.cert,ca:n.ca||this.ca,ciphers:n.ciphers||this.ciphers,rejectUnauthorized:n.rejectUnauthorized||this.rejectUnauthorized,perMessageDeflate:n.perMessageDeflate||this.perMessageDeflate,extraHeaders:n.extraHeaders||this.extraHeaders,forceNode:n.forceNode||this.forceNode,localAddress:n.localAddress||this.localAddress,requestTimeout:n.requestTimeout||this.requestTimeout,protocols:n.protocols||void 0,isReactNative:this.isReactNative});return r},r.prototype.open=function(){var t;if(this.rememberUpgrade&&r.priorWebsocketSuccess&&this.transports.indexOf("websocket")!==-1)t="websocket";else{
+if(0===this.transports.length){var e=this;return void setTimeout(function(){e.emit("error","No transports available")},0)}t=this.transports[0]}this.readyState="opening";try{t=this.createTransport(t)}catch(n){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)},r.prototype.setTransport=function(t){a("setting transport %s",t.name);var e=this;this.transport&&(a("clearing existing transport %s",this.transport.name),this.transport.removeAllListeners()),this.transport=t,t.on("drain",function(){e.onDrain()}).on("packet",function(t){e.onPacket(t)}).on("error",function(t){e.onError(t)}).on("close",function(){e.onClose("transport close")})},r.prototype.probe=function(t){function e(){if(f.onlyBinaryUpgrades){var e=!this.supportsBinary&&f.transport.supportsBinary;h=h||e}h||(a('probe transport "%s" opened',t),p.send([{type:"ping",data:"probe"}]),p.once("packet",function(e){if(!h)if("pong"===e.type&&"probe"===e.data){if(a('probe transport "%s" pong',t),f.upgrading=!0,f.emit("upgrading",p),!p)return;r.priorWebsocketSuccess="websocket"===p.name,a('pausing current transport "%s"',f.transport.name),f.transport.pause(function(){h||"closed"!==f.readyState&&(a("changing transport and sending upgrade packet"),u(),f.setTransport(p),p.send([{type:"upgrade"}]),f.emit("upgrade",p),p=null,f.upgrading=!1,f.flush())})}else{a('probe transport "%s" failed',t);var n=new Error("probe error");n.transport=p.name,f.emit("upgradeError",n)}}))}function n(){h||(h=!0,u(),p.close(),p=null)}function o(e){var r=new Error("probe error: "+e);r.transport=p.name,n(),a('probe transport "%s" failed because of error: %s',t,e),f.emit("upgradeError",r)}function i(){o("transport closed")}function s(){o("socket closed")}function c(t){p&&t.name!==p.name&&(a('"%s" works - aborting "%s"',t.name,p.name),n())}function u(){p.removeListener("open",e),p.removeListener("error",o),p.removeListener("close",i),f.removeListener("close",s),f.removeListener("upgrading",c)}a('probing transport "%s"',t);var p=this.createTransport(t,{probe:1}),h=!1,f=this;r.priorWebsocketSuccess=!1,p.once("open",e),p.once("error",o),p.once("close",i),this.once("close",s),this.once("upgrading",c),p.open()},r.prototype.onOpen=function(){if(a("socket open"),this.readyState="open",r.priorWebsocketSuccess="websocket"===this.transport.name,this.emit("open"),this.flush(),"open"===this.readyState&&this.upgrade&&this.transport.pause){a("starting upgrade probes");for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])}},r.prototype.onPacket=function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(a('socket receive: type "%s", data "%s"',t.type,t.data),this.emit("packet",t),this.emit("heartbeat"),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"pong":this.setPing(),this.emit("pong");break;case"error":var e=new Error("server error");e.code=t.data,this.onError(e);break;case"message":this.emit("data",t.data),this.emit("message",t.data)}else a('packet received with socket readyState "%s"',this.readyState)},r.prototype.onHandshake=function(t){this.emit("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!==this.readyState&&(this.setPing(),this.removeListener("heartbeat",this.onHeartbeat),this.on("heartbeat",this.onHeartbeat))},r.prototype.onHeartbeat=function(t){clearTimeout(this.pingTimeoutTimer);var e=this;e.pingTimeoutTimer=setTimeout(function(){"closed"!==e.readyState&&e.onClose("ping timeout")},t||e.pingInterval+e.pingTimeout)},r.prototype.setPing=function(){var t=this;clearTimeout(t.pingIntervalTimer),t.pingIntervalTimer=setTimeout(function(){a("writing ping packet - expecting pong within %sms",t.pingTimeout),t.ping(),t.onHeartbeat(t.pingTimeout)},t.pingInterval)},r.prototype.ping=function(){var t=this;this.sendPacket("ping",function(){t.emit("ping")})},r.prototype.onDrain=function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emit("drain"):this.flush()},r.prototype.flush=function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(a("flushing %d packets in socket",this.writeBuffer.length),this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emit("flush"))},r.prototype.write=r.prototype.send=function(t,e,n){return this.sendPacket("message",t,e,n),this},r.prototype.sendPacket=function(t,e,n,r){if("function"==typeof e&&(r=e,e=void 0),"function"==typeof n&&(r=n,n=null),"closing"!==this.readyState&&"closed"!==this.readyState){n=n||{},n.compress=!1!==n.compress;var o={type:t,data:e,options:n};this.emit("packetCreate",o),this.writeBuffer.push(o),r&&this.once("flush",r),this.flush()}},r.prototype.close=function(){function t(){r.onClose("forced close"),a("socket closing - telling transport to close"),r.transport.close()}function e(){r.removeListener("upgrade",e),r.removeListener("upgradeError",e),t()}function n(){r.once("upgrade",e),r.once("upgradeError",e)}if("opening"===this.readyState||"open"===this.readyState){this.readyState="closing";var r=this;this.writeBuffer.length?this.once("drain",function(){this.upgrading?n():t()}):this.upgrading?n():t()}return this},r.prototype.onError=function(t){a("socket error %j",t),r.priorWebsocketSuccess=!1,this.emit("error",t),this.onClose("transport error",t)},r.prototype.onClose=function(t,e){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState){a('socket close with reason: "%s"',t);var n=this;clearTimeout(this.pingIntervalTimer),clearTimeout(this.pingTimeoutTimer),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),this.readyState="closed",this.id=null,this.emit("close",t,e),n.writeBuffer=[],n.prevBufferLen=0}},r.prototype.filterUpgrades=function(t){for(var e=[],n=0,r=t.length;n<r;n++)~c(this.transports,t[n])&&e.push(t[n]);return e}},function(t,e,n){function r(t){var e,n=!1,r=!1,a=!1!==t.jsonp;if("undefined"!=typeof location){var c="https:"===location.protocol,u=location.port;u||(u=c?443:80),n=t.hostname!==location.hostname||u!==t.port,r=t.secure!==c}if(t.xdomain=n,t.xscheme=r,e=new o(t),"open"in e&&!t.forceJSONP)return new i(t);if(!a)throw new Error("JSONP disabled");return new s(t)}var o=n(19),i=n(21),s=n(35),a=n(36);e.polling=r,e.websocket=a},function(t,e,n){var r=n(20);t.exports=function(t){var e=t.xdomain,n=t.xscheme,o=t.enablesXDR;try{if("undefined"!=typeof XMLHttpRequest&&(!e||r))return new XMLHttpRequest}catch(i){}try{if("undefined"!=typeof XDomainRequest&&!n&&o)return new XDomainRequest}catch(i){}if(!e)try{return new(self[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(i){}}},function(t,e){try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(n){t.exports=!1}},function(t,e,n){function r(){}function o(t){if(c.call(this,t),this.requestTimeout=t.requestTimeout,this.extraHeaders=t.extraHeaders,"undefined"!=typeof location){var e="https:"===location.protocol,n=location.port;n||(n=e?443:80),this.xd="undefined"!=typeof location&&t.hostname!==location.hostname||n!==t.port,this.xs=t.secure!==e}}function i(t){this.method=t.method||"GET",this.uri=t.uri,this.xd=!!t.xd,this.xs=!!t.xs,this.async=!1!==t.async,this.data=void 0!==t.data?t.data:null,this.agent=t.agent,this.isBinary=t.isBinary,this.supportsBinary=t.supportsBinary,this.enablesXDR=t.enablesXDR,this.withCredentials=t.withCredentials,this.requestTimeout=t.requestTimeout,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.extraHeaders=t.extraHeaders,this.create()}function s(){for(var t in i.requests)i.requests.hasOwnProperty(t)&&i.requests[t].abort()}var a=n(19),c=n(22),u=n(11),p=n(33),h=n(3)("engine.io-client:polling-xhr");if(t.exports=o,t.exports.Request=i,p(o,c),o.prototype.supportsBinary=!0,o.prototype.request=function(t){return t=t||{},t.uri=this.uri(),t.xd=this.xd,t.xs=this.xs,t.agent=this.agent||!1,t.supportsBinary=this.supportsBinary,t.enablesXDR=this.enablesXDR,t.withCredentials=this.withCredentials,t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized,t.requestTimeout=this.requestTimeout,t.extraHeaders=this.extraHeaders,new i(t)},o.prototype.doWrite=function(t,e){var n="string"!=typeof t&&void 0!==t,r=this.request({method:"POST",data:t,isBinary:n}),o=this;r.on("success",e),r.on("error",function(t){o.onError("xhr post error",t)}),this.sendXhr=r},o.prototype.doPoll=function(){h("xhr poll");var t=this.request(),e=this;t.on("data",function(t){e.onData(t)}),t.on("error",function(t){e.onError("xhr poll error",t)}),this.pollXhr=t},u(i.prototype),i.prototype.create=function(){var t={agent:this.agent,xdomain:this.xd,xscheme:this.xs,enablesXDR:this.enablesXDR};t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized;var e=this.xhr=new a(t),n=this;try{h("xhr open %s: %s",this.method,this.uri),e.open(this.method,this.uri,this.async);try{if(this.extraHeaders){e.setDisableHeaderCheck&&e.setDisableHeaderCheck(!0);for(var r in this.extraHeaders)this.extraHeaders.hasOwnProperty(r)&&e.setRequestHeader(r,this.extraHeaders[r])}}catch(o){}if("POST"===this.method)try{this.isBinary?e.setRequestHeader("Content-type","application/octet-stream"):e.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(o){}try{e.setRequestHeader("Accept","*/*")}catch(o){}"withCredentials"in e&&(e.withCredentials=this.withCredentials),this.requestTimeout&&(e.timeout=this.requestTimeout),this.hasXDR()?(e.onload=function(){n.onLoad()},e.onerror=function(){n.onError(e.responseText)}):e.onreadystatechange=function(){if(2===e.readyState)try{var t=e.getResponseHeader("Content-Type");(n.supportsBinary&&"application/octet-stream"===t||"application/octet-stream; charset=UTF-8"===t)&&(e.responseType="arraybuffer")}catch(r){}4===e.readyState&&(200===e.status||1223===e.status?n.onLoad():setTimeout(function(){n.onError("number"==typeof e.status?e.status:0)},0))},h("xhr data %s",this.data),e.send(this.data)}catch(o){return void setTimeout(function(){n.onError(o)},0)}"undefined"!=typeof document&&(this.index=i.requestsCount++,i.requests[this.index]=this)},i.prototype.onSuccess=function(){this.emit("success"),this.cleanup()},i.prototype.onData=function(t){this.emit("data",t),this.onSuccess()},i.prototype.onError=function(t){this.emit("error",t),this.cleanup(!0)},i.prototype.cleanup=function(t){if("undefined"!=typeof this.xhr&&null!==this.xhr){if(this.hasXDR()?this.xhr.onload=this.xhr.onerror=r:this.xhr.onreadystatechange=r,t)try{this.xhr.abort()}catch(e){}"undefined"!=typeof document&&delete i.requests[this.index],this.xhr=null}},i.prototype.onLoad=function(){var t;try{var e;try{e=this.xhr.getResponseHeader("Content-Type")}catch(n){}t="application/octet-stream"===e||"application/octet-stream; charset=UTF-8"===e?this.xhr.response||this.xhr.responseText:this.xhr.responseText}catch(n){this.onError(n)}null!=t&&this.onData(t)},i.prototype.hasXDR=function(){return"undefined"!=typeof XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},i.requestsCount=0,i.requests={},"undefined"!=typeof document)if("function"==typeof attachEvent)attachEvent("onunload",s);else if("function"==typeof addEventListener){var f="onpagehide"in self?"pagehide":"unload";addEventListener(f,s,!1)}},function(t,e,n){function r(t){var e=t&&t.forceBase64;p&&!e||(this.supportsBinary=!1),o.call(this,t)}var o=n(23),i=n(32),s=n(24),a=n(33),c=n(34),u=n(3)("engine.io-client:polling");t.exports=r;var p=function(){var t=n(19),e=new t({xdomain:!1});return null!=e.responseType}();a(r,o),r.prototype.name="polling",r.prototype.doOpen=function(){this.poll()},r.prototype.pause=function(t){function e(){u("paused"),n.readyState="paused",t()}var n=this;if(this.readyState="pausing",this.polling||!this.writable){var r=0;this.polling&&(u("we are currently polling - waiting to pause"),r++,this.once("pollComplete",function(){u("pre-pause polling complete"),--r||e()})),this.writable||(u("we are currently writing - waiting to pause"),r++,this.once("drain",function(){u("pre-pause writing complete"),--r||e()}))}else e()},r.prototype.poll=function(){u("polling"),this.polling=!0,this.doPoll(),this.emit("poll")},r.prototype.onData=function(t){var e=this;u("polling got data %s",t);var n=function(t,n,r){return"opening"===e.readyState&&e.onOpen(),"close"===t.type?(e.onClose(),!1):void e.onPacket(t)};s.decodePayload(t,this.socket.binaryType,n),"closed"!==this.readyState&&(this.polling=!1,this.emit("pollComplete"),"open"===this.readyState?this.poll():u('ignoring poll - transport state "%s"',this.readyState))},r.prototype.doClose=function(){function t(){u("writing close packet"),e.write([{type:"close"}])}var e=this;"open"===this.readyState?(u("transport open - closing"),t()):(u("transport not open - deferring close"),this.once("open",t))},r.prototype.write=function(t){var e=this;this.writable=!1;var n=function(){e.writable=!0,e.emit("drain")};s.encodePayload(t,this.supportsBinary,function(t){e.doWrite(t,n)})},r.prototype.uri=function(){var t=this.query||{},e=this.secure?"https":"http",n="";!1!==this.timestampRequests&&(t[this.timestampParam]=c()),this.supportsBinary||t.sid||(t.b64=1),t=i.encode(t),this.port&&("https"===e&&443!==Number(this.port)||"http"===e&&80!==Number(this.port))&&(n=":"+this.port),t.length&&(t="?"+t);var r=this.hostname.indexOf(":")!==-1;return e+"://"+(r?"["+this.hostname+"]":this.hostname)+n+this.path+t}},function(t,e,n){function r(t){this.path=t.path,this.hostname=t.hostname,this.port=t.port,this.secure=t.secure,this.query=t.query,this.timestampParam=t.timestampParam,this.timestampRequests=t.timestampRequests,this.readyState="",this.agent=t.agent||!1,this.socket=t.socket,this.enablesXDR=t.enablesXDR,this.withCredentials=t.withCredentials,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.forceNode=t.forceNode,this.isReactNative=t.isReactNative,this.extraHeaders=t.extraHeaders,this.localAddress=t.localAddress}var o=n(24),i=n(11);t.exports=r,i(r.prototype),r.prototype.onError=function(t,e){var n=new Error(t);return n.type="TransportError",n.description=e,this.emit("error",n),this},r.prototype.open=function(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this},r.prototype.close=function(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this},r.prototype.send=function(t){if("open"!==this.readyState)throw new Error("Transport not open");this.write(t)},r.prototype.onOpen=function(){this.readyState="open",this.writable=!0,this.emit("open")},r.prototype.onData=function(t){var e=o.decodePacket(t,this.socket.binaryType);this.onPacket(e)},r.prototype.onPacket=function(t){this.emit("packet",t)},r.prototype.onClose=function(){this.readyState="closed",this.emit("close")}},function(t,e,n){function r(t,n){var r="b"+e.packets[t.type]+t.data.data;return n(r)}function o(t,n,r){if(!n)return e.encodeBase64Packet(t,r);var o=t.data,i=new Uint8Array(o),s=new Uint8Array(1+o.byteLength);s[0]=v[t.type];for(var 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r(t,e,n){this.io=t,this.nsp=e,this.json=this,this.ids=0,this.acks={},this.receiveBuffer=[],this.sendBuffer=[],this.connected=!1,this.disconnected=!0,this.flags={},n&&n.query&&(this.query=n.query),this.io.autoConnect&&this.open()}var o=n(7),i=n(11),s=n(40),a=n(41),c=n(42),u=n(3)("socket.io-client:socket"),p=n(32),h=n(26);t.exports=e=r;var f={connect:1,connect_error:1,connect_timeout:1,connecting:1,disconnect:1,error:1,reconnect:1,reconnect_attempt:1,reconnect_failed:1,reconnect_error:1,reconnecting:1,ping:1,pong:1},l=i.prototype.emit;i(r.prototype),r.prototype.subEvents=function(){if(!this.subs){var t=this.io;this.subs=[a(t,"open",c(this,"onopen")),a(t,"packet",c(this,"onpacket")),a(t,"close",c(this,"onclose"))]}},r.prototype.open=r.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.open(),"open"===this.io.readyState&&this.onopen(),this.emit("connecting"),this)},r.prototype.send=function(){var t=s(arguments);return t.unshift("message"),this.emit.apply(this,t),this},r.prototype.emit=function(t){if(f.hasOwnProperty(t))return l.apply(this,arguments),this;var e=s(arguments),n={type:(void 0!==this.flags.binary?this.flags.binary:h(e))?o.BINARY_EVENT:o.EVENT,data:e};return n.options={},n.options.compress=!this.flags||!1!==this.flags.compress,"function"==typeof e[e.length-1]&&(u("emitting packet with ack id %d",this.ids),this.acks[this.ids]=e.pop(),n.id=this.ids++),this.connected?this.packet(n):this.sendBuffer.push(n),this.flags={},this},r.prototype.packet=function(t){t.nsp=this.nsp,this.io.packet(t)},r.prototype.onopen=function(){if(u("transport is open - connecting"),"/"!==this.nsp)if(this.query){var t="object"==typeof this.query?p.encode(this.query):this.query;u("sending connect packet with query %s",t),this.packet({type:o.CONNECT,query:t})}else this.packet({type:o.CONNECT})},r.prototype.onclose=function(t){u("close (%s)",t),this.connected=!1,this.disconnected=!0,delete this.id,this.emit("disconnect",t)},r.prototype.onpacket=function(t){var e=t.nsp===this.nsp,n=t.type===o.ERROR&&"/"===t.nsp;if(e||n)switch(t.type){case o.CONNECT:this.onconnect();break;case o.EVENT:this.onevent(t);break;case o.BINARY_EVENT:this.onevent(t);break;case o.ACK:this.onack(t);break;case o.BINARY_ACK:this.onack(t);break;case o.DISCONNECT:this.ondisconnect();break;case o.ERROR:this.emit("error",t.data)}},r.prototype.onevent=function(t){var e=t.data||[];u("emitting event %j",e),null!=t.id&&(u("attaching ack callback to event"),e.push(this.ack(t.id))),this.connected?l.apply(this,e):this.receiveBuffer.push(e)},r.prototype.ack=function(t){var e=this,n=!1;return function(){if(!n){n=!0;var r=s(arguments);u("sending ack %j",r),e.packet({type:h(r)?o.BINARY_ACK:o.ACK,id:t,data:r})}}},r.prototype.onack=function(t){var e=this.acks[t.id];"function"==typeof e?(u("calling ack %s with %j",t.id,t.data),e.apply(this,t.data),delete this.acks[t.id]):u("bad ack %s",t.id)},r.prototype.onconnect=function(){this.connected=!0,this.disconnected=!1,this.emit("connect"),this.emitBuffered()},r.prototype.emitBuffered=function(){var t;for(t=0;t<this.receiveBuffer.length;t++)l.apply(this,this.receiveBuffer[t]);for(this.receiveBuffer=[],t=0;t<this.sendBuffer.length;t++)this.packet(this.sendBuffer[t]);this.sendBuffer=[]},r.prototype.ondisconnect=function(){u("server disconnect (%s)",this.nsp),this.destroy(),this.onclose("io server disconnect")},r.prototype.destroy=function(){if(this.subs){for(var t=0;t<this.subs.length;t++)this.subs[t].destroy();this.subs=null}this.io.destroy(this)},r.prototype.close=r.prototype.disconnect=function(){return this.connected&&(u("performing disconnect (%s)",this.nsp),this.packet({type:o.DISCONNECT})),this.destroy(),this.connected&&this.onclose("io client disconnect"),this},r.prototype.compress=function(t){return this.flags.compress=t,this},r.prototype.binary=function(t){return this.flags.binary=t,this}},function(t,e){function n(t,e){var n=[];e=e||0;for(var r=e||0;r<t.length;r++)n[r-e]=t[r];return n}t.exports=n},function(t,e){function n(t,e,n){return t.on(e,n),{destroy:function(){t.removeListener(e,n)}}}t.exports=n},function(t,e){var n=[].slice;t.exports=function(t,e){if("string"==typeof e&&(e=t[e]),"function"!=typeof e)throw new Error("bind() requires a function");var r=n.call(arguments,2);return function(){return e.apply(t,r.concat(n.call(arguments)))}}},function(t,e){function n(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}t.exports=n,n.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},n.prototype.reset=function(){this.attempts=0},n.prototype.setMin=function(t){this.ms=t},n.prototype.setMax=function(t){this.max=t},n.prototype.setJitter=function(t){this.jitter=t}}])});
+//# sourceMappingURL=socket.io.js.map
diff --git a/hw7/Claudio_Maggioni/pubsub.js b/hw7/Claudio_Maggioni/pubsub.js
new file mode 100644
index 0000000..5b02b03
--- /dev/null
+++ b/hw7/Claudio_Maggioni/pubsub.js
@@ -0,0 +1,5 @@
+const EventEmitter = require('events');
+
+const emitter = new EventEmitter();
+
+module.exports = emitter;
diff --git a/hw7/Claudio_Maggioni/routes/favourites_db/router.js b/hw7/Claudio_Maggioni/routes/favourites_db/router.js
deleted file mode 100644
index 03bea0c..0000000
--- a/hw7/Claudio_Maggioni/routes/favourites_db/router.js
+++ /dev/null
@@ -1,162 +0,0 @@
-/** @module root/router */
-'use strict';
-// vim: set ts=2 sw=2 et tw=80:
-
-const fs = require('fs');
-const express = require('express');
-const router = express.Router();
-const mongoose = require('mongoose');
-const Favorite = mongoose.model('Favorite');
-const { error, renderFav, parseId, notFound } = require('../utils');
-
-function findAndRender(filter, req, res) {
-  Favorite.find(filter, (err, favs) => {
-    if (err) {
-      return error(err, res);
-    }
-
-    renderFav(req, res, favs);
-  });
-}
-
-router.post('/', (req, res) => {
-  if (!req.body.name || !req.body.dataURL) {
-    res.writeHead(400, { 'Content-Type': 'text/plain' });
-    res.end('Bad create form parameters');
-    return;
-  }
-
-  const data = {
-    name: req.body.name,
-    dataURL: req.body.dataURL,
-    bookmarked: req.body.bookmarked
-  }
-  const favourite = new Favorite(data);
-
-  if (req.body._id) {
-    favourite._id = req.body._id;
-  } else {
-    favourite._id = mongoose.Types.ObjectId();
-  }
-
-  favourite.save((err, fav) => {
-    if (err) {
-      return error(err, res);
-    }
-
-    res.status = 201;
-    renderFav(req, res, fav, false);
-  });
-});
-
-router.get('/', (req, res) => {
-  findAndRender({}, req, res);
-});
-
-router.get('/search', (req, res) => {
-  const filter = Object.assign({}, req.query);
-  delete filter['dataURL'];
-  delete filter['_method'];
-
-  findAndRender(filter, req, res);
-});
-
-function findOne(id) {
-  return (req, res) => {
-    Favorite.findById(id(req), (err, fav) => {
-      if (err) {
-        return error(err, res);
-      }
-
-      if (notFound(fav, res)) {
-        return;
-      }
-
-      renderFav(req, res, fav, false);
-    });
-  };
-}
-
-router.get('/:id', findOne(req => parseId(req)));
-
-function handleUpdate(partial = false) {
-  return (req, res) => {
-
-    const edit = {};
-    for (const key of ['dataURL', 'name']) {
-      if (req.body[key]) {
-        edit[key] = req.body[key];
-      } else if (!partial) {
-        res.writeHead(400, { 'Content-Type': 'text/plain' });
-        res.end('Bad PUT form parameters');
-        return;
-      }
-    }
-
-    if (req.body.bookmarked !== undefined) {
-      edit.bookmarked = req.body.bookmarked;
-    }
-
-    Favorite.findByIdAndUpdate(parseId(req), { $set: edit }, {
-      new: false,
-      upsert: true,
-      setDefaultsOnInsert: true,
-      passRawResult: true,
-    }, (err, fav) => {
-      if (err) {
-        return error(err, res);
-      }
-
-      if (fav == null) {
-        res.status = 201;
-        findOne(() => parseId(req))(req, res);
-        return;
-      }
-
-      res.status = 200;
-      renderFav(req, res, fav, false);
-    });
-  };
-}
-
-router.put('/:id', handleUpdate());
-
-router.patch('/:id', handleUpdate(true));
-
-router.delete('/:id', (req, res) => {
-  Favorite.findByIdAndDelete(parseId(req), (err, fav) => {
-    if (err) {
-      return error(err, res);
-    }
-
-    if (notFound(fav, res)) {
-      return;
-    }
-
-    res.format({
-      json: () => res.writeHead(204),
-      html: () => res.writeHead(302, { 'Location': '/favorites' })
-    });
-    res.end();
-  });
-});
-
-router.put('/:id/bookmarked', (req, res) => {
-  Favorite.findByIdAndUpdate(parseId(req), {
-    $set: { bookmarked: req.body.bookmarked }
-  }, { new: true }, (err, fav) => {
-    if (notFound(fav, res)) {
-      return;
-    }
-
-    if (!req.body.bookmarked) {
-      res.writeHead(400, { 'Content-Type': 'text/plain' });
-      res.end('Bad PUT bookmark form parameters');
-    } else {
-      renderFav(req, res, fav, false);
-    }
-  });
-});
-
-/** router for /root */
-module.exports = router;
diff --git a/hw7/Claudio_Maggioni/routes/favourites_db_asaw/router.js b/hw7/Claudio_Maggioni/routes/favourites_db_asaw/router.js
index 6b0e0ea..1a1f9c9 100644
--- a/hw7/Claudio_Maggioni/routes/favourites_db_asaw/router.js
+++ b/hw7/Claudio_Maggioni/routes/favourites_db_asaw/router.js
@@ -8,9 +8,22 @@ const router = express.Router();
 
 const mongoose = require('mongoose');
 const Favorite = mongoose.model('Favorite');
+const eventBus = require('../../pubsub');
 
 const { error, catchErrs, renderFav, parseId, notFound } = require('../utils');
 
+function socketEmit(req, name, fav) {
+  const obj = {
+    _id: fav._id,
+    name: fav.name,
+    dataURL: fav.dataURL,
+    bookmarked: fav.bookmarked,
+    socketid: req.query.socketid
+  };
+
+  eventBus.emit(name, obj);
+}
+
 async function findAndRender(filter, req, res) {
   try {
     if (filter.name) {
@@ -46,6 +59,9 @@ router.post('/', async (req, res) => {
   try {
     const fav = await favourite.save();
     res.status = 201;
+
+    socketEmit(req, 'favorite.created', fav);
+
     renderFav(req, res, fav, false);
   } catch(e) {
     error(e, res);
@@ -65,7 +81,7 @@ router.get('/search', async (req, res) => {
   await findAndRender(filter, req, res);
 });
 
-function findOne(id) {
+function findOne(id, created = false) {
   return async (req, res) => {
     try {
       const fav = await Favorite.findById(id(req));
@@ -74,6 +90,10 @@ function findOne(id) {
         return;
       }
 
+      if (created) {
+        socketEmit(req, 'favorite.created', fav);
+      }
+
       renderFav(req, res, fav, false);
     } catch(e) {
       error(e, res);
@@ -109,12 +129,15 @@ function handleUpdate(partial = false) {
 
       if (fav == null) {
         res.status = 201;
-        await findOne(() => parseId(req))(req, res);
+        await findOne(() => parseId(req), true)(req, res);
         return;
       }
 
       res.status = 200;
       Object.assign(fav, edit);
+
+      socketEmit(req, 'favorite.updated', fav);
+
       renderFav(req, res, fav, false);
     } catch (e) {
       error(e, res);
@@ -134,6 +157,8 @@ router.delete('/:id', async (req, res) => {
       return;
     }
 
+    socketEmit(req, 'favorite.deleted', { _id: fav.id });
+
     res.format({
       json: () => res.writeHead(204),
       html: () => res.writeHead(302, { 'Location': '/favorites' })
@@ -146,7 +171,7 @@ router.delete('/:id', async (req, res) => {
 
 router.put('/:id/bookmarked', async (req, res) => {
   if (req.body.bookmarked !== true && req.body.bookmarked !== false &&
-      req.body.bookmarked !== "true" && req.body.bookmarked !== "false") {
+    req.body.bookmarked !== "true" && req.body.bookmarked !== "false") {
     res.writeHead(400, { 'Content-Type': 'text/plain' });
     res.end('Bad PUT bookmark form parameters');
   }
@@ -157,6 +182,8 @@ router.put('/:id/bookmarked', async (req, res) => {
       req.body.bookmarked === "true";
     fav.save();
 
+    socketEmit(req, 'favorite.created', fav);
+
     renderFav(req, res, fav, false);
   } catch (e) {
     notFound(null, res);
diff --git a/hw7/Claudio_Maggioni/routes/favourites_db_promises/router.js b/hw7/Claudio_Maggioni/routes/favourites_db_promises/router.js
deleted file mode 100644
index ca08ca8..0000000
--- a/hw7/Claudio_Maggioni/routes/favourites_db_promises/router.js
+++ /dev/null
@@ -1,142 +0,0 @@
-/** @module root/router */
-'use strict';
-// vim: set ts=2 sw=2 et tw=80:
-
-const fs = require('fs');
-const express = require('express');
-const router = express.Router();
-
-const mongoose = require('mongoose');
-const Favorite = mongoose.model('Favorite');
-
-const { error, catchErrs, renderFav, parseId, notFound } = require('../utils');
-
-function findAndRender(filter, req, res) {
-  catchErrs(Favorite.find(filter), res).then(favs => {
-    renderFav(req, res, favs);
-  });
-}
-
-router.post('/', (req, res) => {
-  if (!req.body.name || !req.body.dataURL) {
-    res.writeHead(400, { 'Content-Type': 'text/plain' });
-    res.end('Bad create form parameters');
-    return;
-  }
-
-  const data = {
-    name: req.body.name,
-    dataURL: req.body.dataURL,
-    bookmarked: req.body.bookmarked,
-  };
-  const favourite = new Favorite(data);
-
-  if (req.body._id) {
-    favourite._id = req.body._id;
-  } else {
-    favourite._id = mongoose.Types.ObjectId();
-  }
-
-  catchErrs(favourite.save(), res).then(fav => {
-    res.status = 201;
-    renderFav(req, res, fav, false);
-  });
-});
-
-router.get('/', (req, res) => {
-  findAndRender({}, req, res);
-});
-
-router.get('/search', (req, res) => {
-  const filter = Object.assign({}, req.query);
-  delete filter['dataURL'];
-  delete filter['_method'];
-
-  findAndRender(filter, req, res);
-});
-
-function findOne(id) {
-  return (req, res) => {
-    catchErrs(Favorite.findById(id(req)), res).then(fav => {
-      if (notFound(fav, res)) {
-        return;
-      }
-
-      renderFav(req, res, fav, false);
-    });
-  };
-}
-
-router.get('/:id', findOne(req => parseId(req)));
-
-function handleUpdate(partial = false) {
-  return (req, res) => {
-    const edit = {};
-    for (const key of ['dataURL', 'name']) {
-      if (req.body[key]) {
-        edit[key] = req.body[key];
-      } else if (!partial) {
-        res.writeHead(400, { 'Content-Type': 'text/plain' });
-        res.end('Bad PUT form parameters');
-        return;
-      }
-    }
-
-    if (req.body.bookmarked !== undefined) {
-      edit.bookmarked = req.body.bookmarked;
-    }
-
-    catchErrs(Favorite.findByIdAndUpdate(parseId(req), { $set: edit }, {
-      new: false,
-      upsert: true,
-      setDefaultsOnInsert: true,
-    }), res).then(fav => {
-      if (fav == null) {
-        res.status = 201;
-        findOne(() => parseId(req))(req, res);
-        return;
-      }
-
-      res.status = 200;
-      renderFav(req, res, fav, false);
-    });
-  };
-}
-
-router.put('/:id', handleUpdate());
-
-router.patch('/:id', handleUpdate(true));
-
-router.delete('/:id', (req, res) => {
-  catchErrs(Favorite.findByIdAndDelete(parseId(req)), res).then(fav => {
-    if (notFound(fav, res)) {
-      return;
-    }
-
-    res.format({
-      json: () => res.writeHead(204),
-      html: () => res.writeHead(302, { 'Location': '/favorites' })
-    });
-    res.end();
-  });
-});
-
-router.put('/:id/bookmarked', (req, res) => {
-  catchErrs(Favorite.findByIdAndUpdate(parseId(req), {
-    $set: { bookmarked: req.body.bookmarked }
-  }, { new: true }), res).then(fav => {
-    if (notFound(fav, res)) {
-      return;
-    }
-
-    if (!req.body.bookmarked) {
-      res.writeHead(400, { 'Content-Type': 'text/plain' });
-      res.end('Bad PUT bookmark form parameters');
-    } else {
-      renderFav(req, res, fav, false);
-    }
-  });
-});
-
-/** router for /root */
-module.exports = router;
diff --git a/hw7/Claudio_Maggioni/views/index.dust b/hw7/Claudio_Maggioni/views/index.dust
index b116cf7..1f5dd4e 100644
--- a/hw7/Claudio_Maggioni/views/index.dust
+++ b/hw7/Claudio_Maggioni/views/index.dust
@@ -37,6 +37,7 @@
     <script src="dustjs-linkedin/dust-full.min.js"></script>
     <script src="js/views.js"></script>
     <script src="js/fetch.js"></script>
+    <script src="/socket.io/socket.io.js"></script>
     <script src="scripts/brushes.js"></script>
     <script src="scripts/undo.js"></script>
     <!-- <script src="scripts/clock.js"></script> -->
diff --git a/hw7/Claudio_Maggioni/yarn.lock b/hw7/Claudio_Maggioni/yarn.lock
index eac1985..5ebbe3e 100644
--- a/hw7/Claudio_Maggioni/yarn.lock
+++ b/hw7/Claudio_Maggioni/yarn.lock
@@ -7,7 +7,7 @@ abbrev@1:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
-accepts@~1.3.7:
+accepts@~1.3.4, accepts@~1.3.7:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
   integrity sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==
@@ -15,6 +15,11 @@ accepts@~1.3.7:
     mime-types "~2.1.24"
     negotiator "0.6.2"
 
+after@0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
+  integrity sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=
+
 ajv@^6.5.5:
   version "6.10.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.10.2.tgz#d3cea04d6b017b2894ad69040fec8b623eb4bd52"
@@ -93,6 +98,11 @@ array-unique@^0.3.2:
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
   integrity sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=
 
+arraybuffer.slice@~0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
+  integrity sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog==
+
 asn1@~0.2.3:
   version "0.2.4"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
@@ -115,6 +125,11 @@ async-each@^1.0.0:
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.3.tgz#b727dbf87d7651602f06f4d4ac387f47d91b0cbf"
   integrity sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==
 
+async-limiter@^1.0.0, async-limiter@~1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
+  integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -135,11 +150,26 @@ aws4@^1.8.0:
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
   integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
 
+backo2@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
+  integrity sha1-MasayLEpNjRj41s+u2n038+6eUc=
+
 balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
   integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
 
+base64-arraybuffer@0.1.5:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
+  integrity sha1-c5JncZI7Whl0etZmqlzUv5xunOg=
+
+base64id@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/base64id/-/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
+  integrity sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==
+
 base@^0.11.1:
   version "0.11.2"
   resolved "https://registry.yarnpkg.com/base/-/base-0.11.2.tgz#7bde5ced145b6d551a90db87f83c558b4eb48a8f"
@@ -167,11 +197,23 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
+better-assert@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/better-assert/-/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
+  integrity sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=
+  dependencies:
+    callsite "1.0.0"
+
 binary-extensions@^1.0.0:
   version "1.13.1"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
   integrity sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==
 
+blob@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
+  integrity sha512-gaqbzQPqOoamawKg0LGVd7SzLgXS+JH61oWprSLH+P+abTczqJbhTR8CmJ2u9/bUYNmHTGJx/UEmn6doAvvuig==
+
 bluebird@3.5.1:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
@@ -256,6 +298,11 @@ cache-base@^1.0.1:
     union-value "^1.0.0"
     unset-value "^1.0.0"
 
+callsite@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
+  integrity sha1-KAOY5dZkvXQDi28JBRU+borxvCA=
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
@@ -325,11 +372,26 @@ commander@2.11.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
   integrity sha512-b0553uYA5YAEGgyYIGYROzKQ7X5RAqedkfjiZxwi0kL1g3bOaBNNZfYkzt/CL0umgD5wc9Jec2FbB98CjkMRvQ==
 
+component-bind@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
+  integrity sha1-AMYIq33Nk4l8AAllGx06jh5zu9E=
+
+component-emitter@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+  integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
+
 component-emitter@^1.2.0, component-emitter@^1.2.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
   integrity sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==
 
+component-inherit@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
+  integrity sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM=
+
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -357,6 +419,11 @@ cookie-signature@1.0.6:
   resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
   integrity sha1-4wOogrNCzD7oylE6eZmXNNqzriw=
 
+cookie@0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
+  integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
+
 cookie@0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
@@ -391,7 +458,7 @@ debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
   dependencies:
     ms "2.0.0"
 
-debug@3.1.0:
+debug@3.1.0, debug@~3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
@@ -405,6 +472,13 @@ debug@^3.1.0, debug@^3.2.6:
   dependencies:
     ms "^2.1.1"
 
+debug@~4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
+  dependencies:
+    ms "^2.1.1"
+
 decode-uri-component@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
@@ -493,6 +567,46 @@ encodeurl@~1.0.2:
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
   integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
 
+engine.io-client@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.4.0.tgz#82a642b42862a9b3f7a188f41776b2deab643700"
+  integrity sha512-a4J5QO2k99CM2a0b12IznnyQndoEvtA4UAldhGzKqnHf42I3Qs2W5SPnDvatZRcMaNZs4IevVicBPayxYt6FwA==
+  dependencies:
+    component-emitter "1.2.1"
+    component-inherit "0.0.3"
+    debug "~4.1.0"
+    engine.io-parser "~2.2.0"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    ws "~6.1.0"
+    xmlhttprequest-ssl "~1.5.4"
+    yeast "0.1.2"
+
+engine.io-parser@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-2.2.0.tgz#312c4894f57d52a02b420868da7b5c1c84af80ed"
+  integrity sha512-6I3qD9iUxotsC5HEMuuGsKA0cXerGz+4uGcXQEkfBidgKf0amsjrrtwcbwK/nzpZBxclXlV7gGl9dgWvu4LF6w==
+  dependencies:
+    after "0.8.2"
+    arraybuffer.slice "~0.0.7"
+    base64-arraybuffer "0.1.5"
+    blob "0.0.5"
+    has-binary2 "~1.0.2"
+
+engine.io@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.4.0.tgz#3a962cc4535928c252759a00f98519cb46c53ff3"
+  integrity sha512-XCyYVWzcHnK5cMz7G4VTu2W7zJS7SM1QkcelghyIk/FmobWBtXE7fwhBusEKvCSqc3bMh8fNFMlUkCKTFRxH2w==
+  dependencies:
+    accepts "~1.3.4"
+    base64id "2.0.0"
+    cookie "0.3.1"
+    debug "~4.1.0"
+    engine.io-parser "~2.2.0"
+    ws "^7.1.2"
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -841,6 +955,18 @@ har-validator@~5.1.0:
     ajv "^6.5.5"
     har-schema "^2.0.0"
 
+has-binary2@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has-binary2/-/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
+  integrity sha512-G1LWKhDSvhGeAQ8mPVQlqNcOB2sJdwATtZKl2pDKKHfpf/rYj24lkinxf69blJbnsvtqqNU+L3SL50vzZhXOnw==
+  dependencies:
+    isarray "2.0.1"
+
+has-cors@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/has-cors/-/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
+  integrity sha1-XkdHk/fqmEPRu5nCPu9J/xJv/zk=
+
 has-flag@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
@@ -932,6 +1058,11 @@ ignore-walk@^3.0.1:
   dependencies:
     minimatch "^3.0.4"
 
+indexof@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/indexof/-/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
+  integrity sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10=
+
 inflight@^1.0.4:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
@@ -1117,6 +1248,11 @@ isarray@1.0.0, isarray@~1.0.0:
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
   integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
 
+isarray@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
+  integrity sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4=
+
 isobject@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/isobject/-/isobject-2.1.0.tgz#f065561096a3f1da2ef46272f815c840d87e0c89"
@@ -1543,6 +1679,11 @@ object-assign@^4.1.0:
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
 
+object-component@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
+  integrity sha1-8MaapQ78lbhmwYb0AKM3acsvEpE=
+
 object-copy@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/object-copy/-/object-copy-0.1.0.tgz#7e7d858b781bd7c991a41ba975ed3812754e998c"
@@ -1621,6 +1762,20 @@ parse-glob@^3.0.4:
     is-extglob "^1.0.0"
     is-glob "^2.0.0"
 
+parseqs@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.5.tgz#d5208a3738e46766e291ba2ea173684921a8b89d"
+  integrity sha1-1SCKNzjkZ2bikbouoXNoSSGouJ0=
+  dependencies:
+    better-assert "~1.0.0"
+
+parseuri@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
+  integrity sha1-gCBKUNTbt3m/3G6+J3jZDkvOMgo=
+  dependencies:
+    better-assert "~1.0.0"
+
 parseurl@~1.3.2, parseurl@~1.3.3:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
@@ -2023,6 +2178,61 @@ snapdragon@^0.8.1:
     source-map-resolve "^0.5.0"
     use "^3.1.0"
 
+socket.io-adapter@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-1.1.1.tgz#2a805e8a14d6372124dd9159ad4502f8cb07f06b"
+  integrity sha1-KoBeihTWNyEk3ZFZrUUC+MsH8Gs=
+
+socket.io-client@2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.3.0.tgz#14d5ba2e00b9bcd145ae443ab96b3f86cbcc1bb4"
+  integrity sha512-cEQQf24gET3rfhxZ2jJ5xzAOo/xhZwK+mOqtGRg5IowZsMgwvHwnf/mCRapAAkadhM26y+iydgwsXGObBB5ZdA==
+  dependencies:
+    backo2 "1.0.2"
+    base64-arraybuffer "0.1.5"
+    component-bind "1.0.0"
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    engine.io-client "~3.4.0"
+    has-binary2 "~1.0.2"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    object-component "0.0.3"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    socket.io-parser "~3.3.0"
+    to-array "0.1.4"
+
+socket.io-parser@~3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.3.0.tgz#2b52a96a509fdf31440ba40fed6094c7d4f1262f"
+  integrity sha512-hczmV6bDgdaEbVqhAeVMM/jfUfzuEZHsQg6eOmLgJht6G3mPKMxYm75w2+qhAQZ+4X+1+ATZ+QFKeOZD5riHng==
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~3.1.0"
+    isarray "2.0.1"
+
+socket.io-parser@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.4.0.tgz#370bb4a151df2f77ce3345ff55a7072cc6e9565a"
+  integrity sha512-/G/VOI+3DBp0+DJKW4KesGnQkQPFmUCbA/oO2QGT6CWxU7hLGWqU3tyuzeSK/dqcyeHsQg1vTe9jiZI8GU9SCQ==
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    isarray "2.0.1"
+
+socket.io@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.3.0.tgz#cd762ed6a4faeca59bc1f3e243c0969311eb73fb"
+  integrity sha512-2A892lrj0GcgR/9Qk81EaY2gYhCBxurV0PfmmESO6p27QPrUK1J3zdns+5QPqvUYK2q657nSj0guoIil9+7eFg==
+  dependencies:
+    debug "~4.1.0"
+    engine.io "~3.4.0"
+    has-binary2 "~1.0.2"
+    socket.io-adapter "~1.1.0"
+    socket.io-client "2.3.0"
+    socket.io-parser "~3.4.0"
+
 source-map-resolve@^0.5.0:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.2.tgz#72e2cc34095543e43b2c62b2c4c10d4a9054f259"
@@ -2173,6 +2383,11 @@ tar@^4:
     safe-buffer "^5.1.2"
     yallist "^3.0.3"
 
+to-array@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/to-array/-/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
+  integrity sha1-F+bBH3PdTz10zaek/zI46a2b+JA=
+
 to-object-path@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"
@@ -2312,7 +2527,31 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
+ws@^7.1.2:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.2.0.tgz#422eda8c02a4b5dba7744ba66eebbd84bcef0ec7"
+  integrity sha512-+SqNqFbwTm/0DC18KYzIsMTnEWpLwJsiasW/O17la4iDRRIO9uaHbvKiAS3AHgTiuuWerK/brj4O6MYZkei9xg==
+  dependencies:
+    async-limiter "^1.0.0"
+
+ws@~6.1.0:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"
+  integrity sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==
+  dependencies:
+    async-limiter "~1.0.0"
+
+xmlhttprequest-ssl@~1.5.4:
+  version "1.5.5"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz#c2876b06168aadc40e57d97e81191ac8f4398b3e"
+  integrity sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=
+
 yallist@^3.0.0, yallist@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
+
+yeast@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"
+  integrity sha1-AI4G2AlDIMNy28L47XagymyKxBk=