diff --git a/doorlockd-new/static/socket.io.slim.js b/doorlockd-new/static/socket.io.slim.js
new file mode 100644
index 0000000..03f8b00
--- /dev/null
+++ b/doorlockd-new/static/socket.io.slim.js
@@ -0,0 +1,3 @@
+!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(n){if(r[n])return r[n].exports;var o=r[n]={exports:{},id:n,loaded:!1};return t[n].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var r={};return e.m=t,e.c=r,e.p="",e(0)}([function(t,e,r){"use strict";function n(t,e){"object"===("undefined"==typeof t?"undefined":o(t))&&(e=t,t=void 0),e=e||{};var r,n=i(t),s=n.source,h=n.id,p=n.path,u=c[h]&&p in c[h].nsps,f=e.forceNew||e["force new connection"]||!1===e.multiplex||u;return f?r=a(s,e):(c[h]||(c[h]=a(s,e)),r=c[h]),n.query&&!e.query&&(e.query=n.query),r.socket(n.path,e)}var o="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof 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n},n.prototype.open=function(){var t;if(this.rememberUpgrade&&n.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(t){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)},n.prototype.setTransport=function(t){var e=this;this.transport&&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")})},n.prototype.probe=function(t){function e(){if(u.onlyBinaryUpgrades){var t=!this.supportsBinary&&u.transport.supportsBinary;p=p||t}p||(h.send([{type:"ping",data:"probe"}]),h.once("packet",function(t){if(!p)if("pong"===t.type&&"probe"===t.data){if(u.upgrading=!0,u.emit("upgrading",h),!h)return;n.priorWebsocketSuccess="websocket"===h.name,u.transport.pause(function(){p||"closed"!==u.readyState&&(c(),u.setTransport(h),h.send([{type:"upgrade"}]),u.emit("upgrade",h),h=null,u.upgrading=!1,u.flush())})}else{var e=new Error("probe error");e.transport=h.name,u.emit("upgradeError",e)}}))}function r(){p||(p=!0,c(),h.close(),h=null)}function o(t){var e=new Error("probe error: "+t);e.transport=h.name,r(),u.emit("upgradeError",e)}function i(){o("transport closed")}function s(){o("socket closed")}function a(t){h&&t.name!==h.name&&r()}function c(){h.removeListener("open",e),h.removeListener("error",o),h.removeListener("close",i),u.removeListener("close",s),u.removeListener("upgrading",a)}var h=this.createTransport(t,{probe:1}),p=!1,u=this;n.priorWebsocketSuccess=!1,h.once("open",e),h.once("error",o),h.once("close",i),this.once("close",s),this.once("upgrading",a),h.open()},n.prototype.onOpen=function(){if(this.readyState="open",n.priorWebsocketSuccess="websocket"===this.transport.name,this.emit("open"),this.flush(),"open"===this.readyState&&this.upgrade&&this.transport.pause)for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])},n.prototype.onPacket=function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(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)}},n.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))},n.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)},n.prototype.setPing=function(){var t=this;clearTimeout(t.pingIntervalTimer),t.pingIntervalTimer=setTimeout(function(){t.ping(),t.onHeartbeat(t.pingTimeout)},t.pingInterval)},n.prototype.ping=function(){var t=this;this.sendPacket("ping",function(){t.emit("ping")})},n.prototype.onDrain=function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emit("drain"):this.flush()},n.prototype.flush=function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emit("flush"))},n.prototype.write=n.prototype.send=function(t,e,r){return this.sendPacket("message",t,e,r),this},n.prototype.sendPacket=function(t,e,r,n){if("function"==typeof e&&(n=e,e=void 0),"function"==typeof r&&(n=r,r=null),"closing"!==this.readyState&&"closed"!==this.readyState){r=r||{},r.compress=!1!==r.compress;var o={type:t,data:e,options:r};this.emit("packetCreate",o),this.writeBuffer.push(o),n&&this.once("flush",n),this.flush()}},n.prototype.close=function(){function t(){n.onClose("forced close"),n.transport.close()}function e(){n.removeListener("upgrade",e),n.removeListener("upgradeError",e),t()}function r(){n.once("upgrade",e),n.once("upgradeError",e)}if("opening"===this.readyState||"open"===this.readyState){this.readyState="closing";var n=this;this.writeBuffer.length?this.once("drain",function(){this.upgrading?r():t()}):this.upgrading?r():t()}return this},n.prototype.onError=function(t){n.priorWebsocketSuccess=!1,this.emit("error",t),this.onClose("transport error",t)},n.prototype.onClose=function(t,e){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState){var r=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),r.writeBuffer=[],r.prevBufferLen=0}},n.prototype.filterUpgrades=function(t){for(var e=[],r=0,n=t.length;r<n;r++)~a(this.transports,t[r])&&e.push(t[r]);return e}}).call(e,function(){return this}())},function(t,e,r){(function(t){function n(e){var r,n=!1,a=!1,c=!1!==e.jsonp;if(t.location){var h="https:"===location.protocol,p=location.port;p||(p=h?443:80),n=e.hostname!==location.hostname||p!==e.port,a=e.secure!==h}if(e.xdomain=n,e.xscheme=a,r=new o(e),"open"in r&&!e.forceJSONP)return new i(e);if(!c)throw new Error("JSONP disabled");return new s(e)}var o=r(14),i=r(16),s=r(30),a=r(31);e.polling=n,e.websocket=a}).call(e,function(){return this}())},function(t,e,r){(function(e){var n=r(15);t.exports=function(t){var r=t.xdomain,o=t.xscheme,i=t.enablesXDR;try{if("undefined"!=typeof XMLHttpRequest&&(!r||n))return new XMLHttpRequest}catch(t){}try{if("undefined"!=typeof XDomainRequest&&!o&&i)return new XDomainRequest}catch(t){}if(!r)try{return new(e[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(t){}}}).call(e,function(){return this}())},function(t,e){try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(e){t.exports=!1}},function(t,e,r){(function(e){function n(){}function o(t){if(c.call(this,t),this.requestTimeout=t.requestTimeout,this.extraHeaders=t.extraHeaders,e.location){var r="https:"===location.protocol,n=location.port;n||(n=r?443:80),this.xd=t.hostname!==e.location.hostname||n!==t.port,this.xs=t.secure!==r}}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.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=r(14),c=r(17),h=r(5),p=r(28);r(3)("engine.io-client:polling-xhr");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.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 r="string"!=typeof t&&void 0!==t,n=this.request({method:"POST",data:t,isBinary:r}),o=this;n.on("success",e),n.on("error",function(t){o.onError("xhr post error",t)}),this.sendXhr=n},o.prototype.doPoll=function(){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},h(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 r=this.xhr=new a(t),n=this;try{r.open(this.method,this.uri,this.async);try{if(this.extraHeaders){r.setDisableHeaderCheck&&r.setDisableHeaderCheck(!0);for(var o in this.extraHeaders)this.extraHeaders.hasOwnProperty(o)&&r.setRequestHeader(o,this.extraHeaders[o])}}catch(t){}if("POST"===this.method)try{this.isBinary?r.setRequestHeader("Content-type","application/octet-stream"):r.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(t){}try{r.setRequestHeader("Accept","*/*")}catch(t){}"withCredentials"in r&&(r.withCredentials=!0),this.requestTimeout&&(r.timeout=this.requestTimeout),this.hasXDR()?(r.onload=function(){n.onLoad()},r.onerror=function(){n.onError(r.responseText)}):r.onreadystatechange=function(){if(2===r.readyState){var t;try{t=r.getResponseHeader("Content-Type")}catch(t){}"application/octet-stream"===t&&(r.responseType="arraybuffer")}4===r.readyState&&(200===r.status||1223===r.status?n.onLoad():setTimeout(function(){n.onError(r.status)},0))},r.send(this.data)}catch(t){return void setTimeout(function(){n.onError(t)},0)}e.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=n:this.xhr.onreadystatechange=n,t)try{this.xhr.abort()}catch(t){}e.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(t){}t="application/octet-stream"===e?this.xhr.response||this.xhr.responseText:this.xhr.responseText}catch(t){this.onError(t)}null!=t&&this.onData(t)},i.prototype.hasXDR=function(){return"undefined"!=typeof e.XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},i.requestsCount=0,i.requests={},e.document&&(e.attachEvent?e.attachEvent("onunload",s):e.addEventListener&&e.addEventListener("beforeunload",s,!1))}).call(e,function(){return this}())},function(t,e,r){function n(t){var e=t&&t.forceBase64;h&&!e||(this.supportsBinary=!1),o.call(this,t)}var o=r(18),i=r(27),s=r(19),a=r(28),c=r(29);r(3)("engine.io-client:polling");t.exports=n;var h=function(){var t=r(14),e=new t({xdomain:!1});return null!=e.responseType}();a(n,o),n.prototype.name="polling",n.prototype.doOpen=function(){this.poll()},n.prototype.pause=function(t){function e(){r.readyState="paused",t()}var r=this;if(this.readyState="pausing",this.polling||!this.writable){var n=0;this.polling&&(n++,this.once("pollComplete",function(){--n||e()})),this.writable||(n++,this.once("drain",function(){--n||e()}))}else e()},n.prototype.poll=function(){this.polling=!0,this.doPoll(),this.emit("poll")},n.prototype.onData=function(t){var e=this,r=function(t,r,n){return"opening"===e.readyState&&e.onOpen(),"close"===t.type?(e.onClose(),!1):void e.onPacket(t)};s.decodePayload(t,this.socket.binaryType,r),"closed"!==this.readyState&&(this.polling=!1,this.emit("pollComplete"),"open"===this.readyState&&this.poll())},n.prototype.doClose=function(){function t(){e.write([{type:"close"}])}var e=this;"open"===this.readyState?t():this.once("open",t)},n.prototype.write=function(t){var e=this;this.writable=!1;var r=function(){e.writable=!0,e.emit("drain")};s.encodePayload(t,this.supportsBinary,function(t){e.doWrite(t,r)})},n.prototype.uri=function(){var t=this.query||{},e=this.secure?"https":"http",r="";!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))&&(r=":"+this.port),t.length&&(t="?"+t);var n=this.hostname.indexOf(":")!==-1;return e+"://"+(n?"["+this.hostname+"]":this.hostname)+r+this.path+t}},function(t,e,r){function n(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.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.extraHeaders=t.extraHeaders,this.localAddress=t.localAddress}var o=r(19),i=r(5);t.exports=n,i(n.prototype),n.prototype.onError=function(t,e){var r=new Error(t);return r.type="TransportError",r.description=e,this.emit("error",r),this},n.prototype.open=function(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this},n.prototype.close=function(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this},n.prototype.send=function(t){if("open"!==this.readyState)throw new Error("Transport not open");this.write(t)},n.prototype.onOpen=function(){this.readyState="open",this.writable=!0,this.emit("open");
+},n.prototype.onData=function(t){var e=o.decodePacket(t,this.socket.binaryType);this.onPacket(e)},n.prototype.onPacket=function(t){this.emit("packet",t)},n.prototype.onClose=function(){this.readyState="closed",this.emit("close")}},function(t,e,r){(function(t){function n(t,r){var n="b"+e.packets[t.type]+t.data.data;return r(n)}function o(t,r,n){if(!r)return e.encodeBase64Packet(t,n);var o=t.data,i=new Uint8Array(o),s=new Uint8Array(1+o.byteLength);s[0]=v[t.type];for(var a=0;a<i.length;a++)s[a+1]=i[a];return n(s.buffer)}function i(t,r,n){if(!r)return e.encodeBase64Packet(t,n);var o=new FileReader;return o.onload=function(){t.data=o.result,e.encodePacket(t,r,!0,n)},o.readAsArrayBuffer(t.data)}function s(t,r,n){if(!r)return e.encodeBase64Packet(t,n);if(g)return i(t,r,n);var o=new Uint8Array(1);o[0]=v[t.type];var s=new w([o.buffer,t.data]);return n(s)}function a(t){try{t=d.decode(t,{strict:!1})}catch(t){return!1}return t}function c(t,e,r){for(var n=new Array(t.length),o=l(t.length,r),i=function(t,r,o){e(r,function(e,r){n[t]=r,o(e,n)})},s=0;s<t.length;s++)i(s,t[s],o)}var h,p=r(20),u=r(6),f=r(21),l=r(22),d=r(23);t&&t.ArrayBuffer&&(h=r(25));var y="undefined"!=typeof navigator&&/Android/i.test(navigator.userAgent),m="undefined"!=typeof navigator&&/PhantomJS/i.test(navigator.userAgent),g=y||m;e.protocol=3;var v=e.packets={open:0,close:1,ping:2,pong:3,message:4,upgrade:5,noop:6},b=p(v),k={type:"error",data:"parser error"},w=r(26);e.encodePacket=function(e,r,i,a){"function"==typeof r&&(a=r,r=!1),"function"==typeof i&&(a=i,i=null);var c=void 0===e.data?void 0:e.data.buffer||e.data;if(t.ArrayBuffer&&c instanceof ArrayBuffer)return o(e,r,a);if(w&&c instanceof t.Blob)return s(e,r,a);if(c&&c.base64)return n(e,a);var h=v[e.type];return void 0!==e.data&&(h+=i?d.encode(String(e.data),{strict:!1}):String(e.data)),a(""+h)},e.encodeBase64Packet=function(r,n){var o="b"+e.packets[r.type];if(w&&r.data instanceof t.Blob){var i=new FileReader;return i.onload=function(){var t=i.result.split(",")[1];n(o+t)},i.readAsDataURL(r.data)}var s;try{s=String.fromCharCode.apply(null,new Uint8Array(r.data))}catch(t){for(var a=new Uint8Array(r.data),c=new Array(a.length),h=0;h<a.length;h++)c[h]=a[h];s=String.fromCharCode.apply(null,c)}return o+=t.btoa(s),n(o)},e.decodePacket=function(t,r,n){if(void 0===t)return k;if("string"==typeof t){if("b"===t.charAt(0))return e.decodeBase64Packet(t.substr(1),r);if(n&&(t=a(t),t===!1))return k;var o=t.charAt(0);return Number(o)==o&&b[o]?t.length>1?{type:b[o],data:t.substring(1)}:{type:b[o]}:k}var i=new Uint8Array(t),o=i[0],s=f(t,1);return w&&"blob"===r&&(s=new w([s])),{type:b[o],data:s}},e.decodeBase64Packet=function(t,e){var r=b[t.charAt(0)];if(!h)return{type:r,data:{base64:!0,data:t.substr(1)}};var n=h.decode(t.substr(1));return"blob"===e&&w&&(n=new w([n])),{type:r,data:n}},e.encodePayload=function(t,r,n){function o(t){return t.length+":"+t}function i(t,n){e.encodePacket(t,!!s&&r,!1,function(t){n(null,o(t))})}"function"==typeof r&&(n=r,r=null);var s=u(t);return r&&s?w&&!g?e.encodePayloadAsBlob(t,n):e.encodePayloadAsArrayBuffer(t,n):t.length?void c(t,i,function(t,e){return n(e.join(""))}):n("0:")},e.decodePayload=function(t,r,n){if("string"!=typeof t)return e.decodePayloadAsBinary(t,r,n);"function"==typeof r&&(n=r,r=null);var o;if(""===t)return n(k,0,1);for(var i,s,a="",c=0,h=t.length;c<h;c++){var p=t.charAt(c);if(":"===p){if(""===a||a!=(i=Number(a)))return n(k,0,1);if(s=t.substr(c+1,i),a!=s.length)return n(k,0,1);if(s.length){if(o=e.decodePacket(s,r,!1),k.type===o.type&&k.data===o.data)return n(k,0,1);var u=n(o,c+i,h);if(!1===u)return}c+=i,a=""}else a+=p}return""!==a?n(k,0,1):void 0},e.encodePayloadAsArrayBuffer=function(t,r){function n(t,r){e.encodePacket(t,!0,!0,function(t){return r(null,t)})}return t.length?void c(t,n,function(t,e){var n=e.reduce(function(t,e){var r;return r="string"==typeof 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o=t,i=[];o.byteLength>0;){for(var s=new Uint8Array(o),a=0===s[0],c="",h=1;255!==s[h];h++){if(c.length>310)return n(k,0,1);c+=s[h]}o=f(o,2+c.length),c=parseInt(c);var p=f(o,0,c);if(a)try{p=String.fromCharCode.apply(null,new Uint8Array(p))}catch(t){var u=new Uint8Array(p);p="";for(var h=0;h<u.length;h++)p+=String.fromCharCode(u[h])}i.push(p),o=f(o,c)}var l=i.length;i.forEach(function(t,o){n(e.decodePacket(t,r,!0),o,l)})}}).call(e,function(){return this}())},function(t,e){t.exports=Object.keys||function(t){var e=[],r=Object.prototype.hasOwnProperty;for(var n in t)r.call(t,n)&&e.push(n);return e}},function(t,e){t.exports=function(t,e,r){var n=t.byteLength;if(e=e||0,r=r||n,t.slice)return t.slice(e,r);if(e<0&&(e+=n),r<0&&(r+=n),r>n&&(r=n),e>=n||e>=r||0===n)return new ArrayBuffer(0);for(var o=new Uint8Array(t),i=new Uint8Array(r-e),s=e,a=0;s<r;s++,a++)i[a]=o[s];return i.buffer}},function(t,e){function r(t,e,r){function o(t,n){if(o.count<=0)throw new Error("after called too many 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Uint8Array(p);for(e=0;e<c;e+=4)n=r[t.charCodeAt(e)],o=r[t.charCodeAt(e+1)],i=r[t.charCodeAt(e+2)],s=r[t.charCodeAt(e+3)],u[h++]=n<<2|o>>4,u[h++]=(15&o)<<4|i>>2,u[h++]=(3&i)<<6|63&s;return p}}()},function(t,e){(function(e){function r(t){for(var e=0;e<t.length;e++){var r=t[e];if(r.buffer instanceof ArrayBuffer){var n=r.buffer;if(r.byteLength!==n.byteLength){var o=new Uint8Array(r.byteLength);o.set(new Uint8Array(n,r.byteOffset,r.byteLength)),n=o.buffer}t[e]=n}}}function n(t,e){e=e||{};var n=new i;r(t);for(var o=0;o<t.length;o++)n.append(t[o]);return e.type?n.getBlob(e.type):n.getBlob()}function o(t,e){return r(t),new Blob(t,e||{})}var i=e.BlobBuilder||e.WebKitBlobBuilder||e.MSBlobBuilder||e.MozBlobBuilder,s=function(){try{var t=new Blob(["hi"]);return 2===t.size}catch(t){return!1}}(),a=s&&function(){try{var t=new Blob([new Uint8Array([1,2])]);return 2===t.size}catch(t){return!1}}(),c=i&&i.prototype.append&&i.prototype.getBlob;t.exports=function(){return s?a?e.Blob:o:c?n:void 0}()}).call(e,function(){return this}())},function(t,e){e.encode=function(t){var e="";for(var r in t)t.hasOwnProperty(r)&&(e.length&&(e+="&"),e+=encodeURIComponent(r)+"="+encodeURIComponent(t[r]));return e},e.decode=function(t){for(var e={},r=t.split("&"),n=0,o=r.length;n<o;n++){var i=r[n].split("=");e[decodeURIComponent(i[0])]=decodeURIComponent(i[1])}return e}},function(t,e){t.exports=function(t,e){var r=function(){};r.prototype=e.prototype,t.prototype=new r,t.prototype.constructor=t}},function(t,e){"use strict";function r(t){var e="";do e=s[t%a]+e,t=Math.floor(t/a);while(t>0);return e}function n(t){var e=0;for(p=0;p<t.length;p++)e=e*a+c[t.charAt(p)];return e}function o(){var t=r(+new Date);return t!==i?(h=0,i=t):t+"."+r(h++)}for(var i,s="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_".split(""),a=64,c={},h=0,p=0;p<a;p++)c[s[p]]=p;o.encode=r,o.decode=n,t.exports=o},function(t,e,r){(function(e){function n(){}function o(t){i.call(this,t),this.query=this.query||{},a||(e.___eio||(e.___eio=[]),a=e.___eio),this.index=a.length;var r=this;a.push(function(t){r.onData(t)}),this.query.j=this.index,e.document&&e.addEventListener&&e.addEventListener("beforeunload",function(){r.script&&(r.script.onerror=n)},!1)}var i=r(17),s=r(28);t.exports=o;var a,c=/\n/g,h=/\\n/g;s(o,i),o.prototype.supportsBinary=!1,o.prototype.doClose=function(){this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),this.form&&(this.form.parentNode.removeChild(this.form),this.form=null,this.iframe=null),i.prototype.doClose.call(this)},o.prototype.doPoll=function(){var t=this,e=document.createElement("script");this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),e.async=!0,e.src=this.uri(),e.onerror=function(e){t.onError("jsonp poll error",e)};var r=document.getElementsByTagName("script")[0];r?r.parentNode.insertBefore(e,r):(document.head||document.body).appendChild(e),this.script=e;var n="undefined"!=typeof navigator&&/gecko/i.test(navigator.userAgent);n&&setTimeout(function(){var t=document.createElement("iframe");document.body.appendChild(t),document.body.removeChild(t)},100)},o.prototype.doWrite=function(t,e){function r(){n(),e()}function n(){if(o.iframe)try{o.form.removeChild(o.iframe)}catch(t){o.onError("jsonp polling iframe removal error",t)}try{var t='<iframe src="javascript:0" name="'+o.iframeId+'">';i=document.createElement(t)}catch(t){i=document.createElement("iframe"),i.name=o.iframeId,i.src="javascript:0"}i.id=o.iframeId,o.form.appendChild(i),o.iframe=i}var o=this;if(!this.form){var i,s=document.createElement("form"),a=document.createElement("textarea"),p=this.iframeId="eio_iframe_"+this.index;s.className="socketio",s.style.position="absolute",s.style.top="-1000px",s.style.left="-1000px",s.target=p,s.method="POST",s.setAttribute("accept-charset","utf-8"),a.name="d",s.appendChild(a),document.body.appendChild(s),this.form=s,this.area=a}this.form.action=this.uri(),n(),t=t.replace(h,"\\\n"),this.area.value=t.replace(c,"\\n");try{this.form.submit()}catch(t){}this.iframe.attachEvent?this.iframe.onreadystatechange=function(){"complete"===o.iframe.readyState&&r()}:this.iframe.onload=r}}).call(e,function(){return this}())},function(t,e,r){(function(e){function n(t){var e=t&&t.forceBase64;e&&(this.supportsBinary=!1),this.perMessageDeflate=t.perMessageDeflate,this.usingBrowserWebSocket=p&&!t.forceNode,this.protocols=t.protocols,this.usingBrowserWebSocket||(u=o),i.call(this,t)}var o,i=r(18),s=r(19),a=r(27),c=r(28),h=r(29),p=(r(3)("engine.io-client:websocket"),e.WebSocket||e.MozWebSocket);if("undefined"==typeof window)try{o=r(32)}catch(t){}var u=p;u||"undefined"!=typeof window||(u=o),t.exports=n,c(n,i),n.prototype.name="websocket",n.prototype.supportsBinary=!0,n.prototype.doOpen=function(){if(this.check()){var t=this.uri(),e=this.protocols,r={agent:this.agent,perMessageDeflate:this.perMessageDeflate};r.pfx=this.pfx,r.key=this.key,r.passphrase=this.passphrase,r.cert=this.cert,r.ca=this.ca,r.ciphers=this.ciphers,r.rejectUnauthorized=this.rejectUnauthorized,this.extraHeaders&&(r.headers=this.extraHeaders),this.localAddress&&(r.localAddress=this.localAddress);try{this.ws=this.usingBrowserWebSocket?e?new u(t,e):new u(t):new u(t,e,r)}catch(t){return this.emit("error",t)}void 0===this.ws.binaryType&&(this.supportsBinary=!1),this.ws.supports&&this.ws.supports.binary?(this.supportsBinary=!0,this.ws.binaryType="nodebuffer"):this.ws.binaryType="arraybuffer",this.addEventListeners()}},n.prototype.addEventListeners=function(){var t=this;this.ws.onopen=function(){t.onOpen()},this.ws.onclose=function(){t.onClose()},this.ws.onmessage=function(e){t.onData(e.data)},this.ws.onerror=function(e){t.onError("websocket error",e)}},n.prototype.write=function(t){function r(){n.emit("flush"),setTimeout(function(){n.writable=!0,n.emit("drain")},0)}var n=this;this.writable=!1;for(var o=t.length,i=0,a=o;i<a;i++)!function(t){s.encodePacket(t,n.supportsBinary,function(i){if(!n.usingBrowserWebSocket){var s={};if(t.options&&(s.compress=t.options.compress),n.perMessageDeflate){var a="string"==typeof i?e.Buffer.byteLength(i):i.length;a<n.perMessageDeflate.threshold&&(s.compress=!1)}}try{n.usingBrowserWebSocket?n.ws.send(i):n.ws.send(i,s)}catch(t){}--o||r()})}(t[i])},n.prototype.onClose=function(){i.prototype.onClose.call(this)},n.prototype.doClose=function(){"undefined"!=typeof this.ws&&this.ws.close()},n.prototype.uri=function(){var t=this.query||{},e=this.secure?"wss":"ws",r="";this.port&&("wss"===e&&443!==Number(this.port)||"ws"===e&&80!==Number(this.port))&&(r=":"+this.port),this.timestampRequests&&(t[this.timestampParam]=h()),this.supportsBinary||(t.b64=1),t=a.encode(t),t.length&&(t="?"+t);var n=this.hostname.indexOf(":")!==-1;return e+"://"+(n?"["+this.hostname+"]":this.hostname)+r+this.path+t},n.prototype.check=function(){return!(!u||"__initialize"in u&&this.name===n.prototype.name)}}).call(e,function(){return this}())},function(t,e){},function(t,e){var r=[].indexOf;t.exports=function(t,e){if(r)return t.indexOf(e);for(var n=0;n<t.length;++n)if(t[n]===e)return n;return-1}},function(t,e,r){"use strict";function n(t,e,r){this.io=t,this.nsp=e,this.json=this,this.ids=0,this.acks={},this.receiveBuffer=[],this.sendBuffer=[],this.connected=!1,this.disconnected=!0,r&&r.query&&(this.query=r.query),this.io.autoConnect&&this.open()}var o="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},i=r(4),s=r(5),a=r(35),c=r(36),h=r(37),p=(r(3)("socket.io-client:socket"),r(27));t.exports=e=n;var u={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},f=s.prototype.emit;s(n.prototype),n.prototype.subEvents=function(){if(!this.subs){var t=this.io;this.subs=[c(t,"open",h(this,"onopen")),c(t,"packet",h(this,"onpacket")),c(t,"close",h(this,"onclose"))]}},n.prototype.open=n.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.open(),"open"===this.io.readyState&&this.onopen(),this.emit("connecting"),this)},n.prototype.send=function(){var t=a(arguments);return t.unshift("message"),this.emit.apply(this,t),this},n.prototype.emit=function(t){if(u.hasOwnProperty(t))return f.apply(this,arguments),this;var e=a(arguments),r={type:i.EVENT,data:e};return r.options={},r.options.compress=!this.flags||!1!==this.flags.compress,"function"==typeof e[e.length-1]&&(this.acks[this.ids]=e.pop(),r.id=this.ids++),this.connected?this.packet(r):this.sendBuffer.push(r),delete this.flags,this},n.prototype.packet=function(t){t.nsp=this.nsp,this.io.packet(t)},n.prototype.onopen=function(){if("/"!==this.nsp)if(this.query){var t="object"===o(this.query)?p.encode(this.query):this.query;this.packet({type:i.CONNECT,query:t})}else this.packet({type:i.CONNECT})},n.prototype.onclose=function(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emit("disconnect",t)},n.prototype.onpacket=function(t){if(t.nsp===this.nsp)switch(t.type){case i.CONNECT:this.onconnect();break;case i.EVENT:this.onevent(t);break;case i.BINARY_EVENT:this.onevent(t);break;case i.ACK:this.onack(t);break;case i.BINARY_ACK:this.onack(t);break;case i.DISCONNECT:this.ondisconnect();break;case i.ERROR:this.emit("error",t.data)}},n.prototype.onevent=function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?f.apply(this,e):this.receiveBuffer.push(e)},n.prototype.ack=function(t){var e=this,r=!1;return function(){if(!r){r=!0;var n=a(arguments);e.packet({type:i.ACK,id:t,data:n})}}},n.prototype.onack=function(t){var e=this.acks[t.id];"function"==typeof e&&(e.apply(this,t.data),delete this.acks[t.id])},n.prototype.onconnect=function(){this.connected=!0,this.disconnected=!1,this.emit("connect"),this.emitBuffered()},n.prototype.emitBuffered=function(){var t;for(t=0;t<this.receiveBuffer.length;t++)f.apply(this,this.receiveBuffer[t]);for(this.receiveBuffer=[],t=0;t<this.sendBuffer.length;t++)this.packet(this.sendBuffer[t]);this.sendBuffer=[]},n.prototype.ondisconnect=function(){this.destroy(),this.onclose("io server disconnect")},n.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)},n.prototype.close=n.prototype.disconnect=function(){return this.connected&&this.packet({type:i.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this},n.prototype.compress=function(t){return this.flags=this.flags||{},this.flags.compress=t,this}},function(t,e){function r(t,e){var r=[];e=e||0;for(var n=e||0;n<t.length;n++)r[n-e]=t[n];return r}t.exports=r},function(t,e){"use strict";function r(t,e,r){return t.on(e,r),{destroy:function(){t.removeListener(e,r)}}}t.exports=r},function(t,e){var r=[].slice;t.exports=function(t,e){if("string"==typeof e&&(e=t[e]),"function"!=typeof e)throw new Error("bind() requires a function");var n=r.call(arguments,2);return function(){return e.apply(t,n.concat(r.call(arguments)))}}},function(t,e){function r(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=r,r.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),r=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-r:t+r}return 0|Math.min(t,this.max)},r.prototype.reset=function(){this.attempts=0},r.prototype.setMin=function(t){this.ms=t},r.prototype.setMax=function(t){this.max=t},r.prototype.setJitter=function(t){this.jitter=t}}])});
+//# sourceMappingURL=socket.io.slim.js.map
\ No newline at end of file
diff --git a/doorlockd-new/templates/display.html b/doorlockd-new/templates/display.html
index 30479ea..66e38f8 100644
--- a/doorlockd-new/templates/display.html
+++ b/doorlockd-new/templates/display.html
@@ -2,7 +2,7 @@
 
 {% block scripts %}
     {{ super() }}
-    <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.5/socket.io.min.js"></script>
+    <script type="text/javascript" src="static/socket.io.slim.js"></script>
     <script type="text/javascript" charset="utf-8">
     $(document).ready(function() {
         var socket = io.connect(location.protocol + '//' + document.domain + ':' + location.port)