diff --git a/clientapp/helpers/xmppEventHandlers.js b/clientapp/helpers/xmppEventHandlers.js
index dff24a8..2cc2b9a 100644
--- a/clientapp/helpers/xmppEventHandlers.js
+++ b/clientapp/helpers/xmppEventHandlers.js
@@ -248,6 +248,7 @@ module.exports = function (client, app) {
                 });
             }
 
+            message.acked = true;
             contact.addMessage(message, true);
             contact.lockedResource = msg.from.full;
         }
@@ -262,6 +263,7 @@ module.exports = function (client, app) {
             }
 
             var message = new Message(msg);
+            message.acked = true;
             contact.addMessage(message, true);
         }
     });
@@ -278,7 +280,7 @@ module.exports = function (client, app) {
 
         original.correct(msg);
     });
-    
+
     client.on('carbon:received', function (carbon) {
         if (!me.isMe(carbon.from)) return;
 
@@ -317,4 +319,16 @@ module.exports = function (client, app) {
             discoCapsQueue.push(pres);
         }
     });
+
+    client.on('stanza:acked', function (stanza) {
+        if (stanza.body) {
+            var contact = me.getContact(stanza.to, stanza.from);
+            if (contact) {
+                var msg = contact.messages.get(stanza.id);
+                if (msg) {
+                    msg.acked = true;
+                }
+            }
+        }
+    });
 };
diff --git a/clientapp/libraries/stanza.io.js b/clientapp/libraries/stanza.io.js
index d28e19f..fa73809 100644
--- a/clientapp/libraries/stanza.io.js
+++ b/clientapp/libraries/stanza.io.js
@@ -1,5 +1,5 @@
 !function(t){if("function"==typeof bootstrap)bootstrap("xmpp",t);else if("object"==typeof exports)module.exports=t();else if("function"==typeof define&&define.amd)define(t);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeXMPP=t}else"undefined"!=typeof window?window.XMPP=t():global.XMPP=t()}(function(){var t;return function(t,e,n){function r(n,o){if(!e[n]){if(!t[n]){var a="function"==typeof require&&require;if(!o&&a)return a(n,!0);if(i)return i(n,!0);throw new Error("Cannot find module '"+n+"'")}var s=e[n]={exports:{}};t[n][0].call(s.exports,function(e){var i=t[n][1][e];return r(i?i:e)},s,s.exports)}return e[n].exports}for(var i="function"==typeof require&&require,o=0;o<n.length;o++)r(n[o]);return r}({1:[function(t,e,n){n.Message=t("./lib/stanza/message"),n.Presence=t("./lib/stanza/presence"),n.Iq=t("./lib/stanza/iq"),n.Client=t("./lib/client"),n.crypto=t("crypto"),n.createClient=function(e){var r=new n.Client(e);return r.use(t("./lib/plugins/disco")),r.use(t("./lib/plugins/chatstates")),r.use(t("./lib/plugins/delayed")),r.use(t("./lib/plugins/forwarding")),r.use(t("./lib/plugins/carbons")),r.use(t("./lib/plugins/time")),r.use(t("./lib/plugins/mam")),r.use(t("./lib/plugins/receipts")),r.use(t("./lib/plugins/idle")),r.use(t("./lib/plugins/correction")),r.use(t("./lib/plugins/attention")),r.use(t("./lib/plugins/version")),r.use(t("./lib/plugins/invisible")),r.use(t("./lib/plugins/muc")),r.use(t("./lib/plugins/pubsub")),r.use(t("./lib/plugins/avatar")),r.use(t("./lib/plugins/private")),r.use(t("./lib/plugins/bookmarks")),r}},{"./lib/client":2,"./lib/plugins/attention":4,"./lib/plugins/avatar":5,"./lib/plugins/bookmarks":6,"./lib/plugins/carbons":7,"./lib/plugins/chatstates":8,"./lib/plugins/correction":9,"./lib/plugins/delayed":10,"./lib/plugins/disco":11,"./lib/plugins/forwarding":12,"./lib/plugins/idle":13,"./lib/plugins/invisible":14,"./lib/plugins/mam":15,"./lib/plugins/muc":16,"./lib/plugins/private":17,"./lib/plugins/pubsub":18,"./lib/plugins/receipts":19,"./lib/plugins/time":20,"./lib/plugins/version":21,"./lib/stanza/iq":35,"./lib/stanza/message":37,"./lib/stanza/presence":39,crypto:63}],2:[function(t,e){function n(t){var e=this;r.call(this),this.config=t||{},this.jid=new p,this._idPrefix=a.v4(),this._idCount=0,this.timeoutMonitor=null,this.negotiatedFeatures={},this.featureOrder=["sasl","streamManagement","bind","streamManagement","session"],this.features={},this.conn=new h,this.conn.on("*",function(t,n){e.emit(t,n)}),this.on("streamFeatures",function(t){var n=[function(e){e(null,t)}],r=["setup"];e.featureOrder.forEach(function(i){t._extensions[i]&&!e.negotiatedFeatures[i]&&(n.push(function(t,n){!e.negotiatedFeatures[i]&&e.features[i]?e.features[i](t,n):n(null,t)}),r.push(i))}),o.waterfall(n,function(t){"restart"===t?e.conn.restart():"disconnect"===t&&e.disconnect()})}),this.features.sasl=function(t,n){var r=m.create(t.sasl.mechanisms);e.on("sasl:success","sasl",function(){e.negotiatedFeatures.sasl=!0,e.releaseGroup("sasl"),e.emit("auth:success"),n("restart")}),e.on("sasl:challenge","sasl",function(t){r.challenge(t.value),e.send(new u.Response({value:r.response(e.getCredentials())})),r.cache&&(i.each(r.cache,function(t,n){e.config.credentials[n]=btoa(t)}),e.emit("credentials:update",e.config.credentials)),n()}),e.on("sasl:failure","sasl",function(){e.releaseGroup("sasl"),e.emit("auth:failed"),n("disconnect")}),e.on("sasl:abort","sasl",function(){e.releaseGroup("sasl"),e.emit("auth:failed"),n("disconnect")});var o={mechanism:r.name};r.clientFirst&&(o.value=r.response(e.getCredentials())),e.send(new u.Auth(o))},this.features.bind=function(t,n){e.sendIq({type:"set",bind:{resource:e.config.resource}},function(r,i){e.negotiatedFeatures.bind=!0,e.emit("session:bound",i.bind.jid),e.jid=new p(i.bind.jid),t._extensions.session||(e.sessionStarted=!0,e.emit("session:started",i.bind.jid)),n(null,t)})},this.features.session=function(t,n){e.sendIq({type:"set",session:{}},function(){e.negotiatedFeatures.session=!0,e.sessionStarted=!0,e.emit("session:started",e.jid),n(null,t)})},this.features.streamManagement=function(t,n){e.on("stream:management:enabled","sm",function(r){e.conn.sm.enabled(r),e.negotiatedFeatures.streamManagement=!0,e.on("stream:management:ack","connection",function(t){e.conn.sm.process(t)}),e.on("stream:management:request","connection",function(){e.conn.sm.ack()}),e.releaseGroup("sm"),n(null,t)}),e.on("stream:management:resumed","sm",function(r){e.conn.sm.enabled(r),e.negotiatedFeatures.streamManagement=!0,e.negotiatedFeatures.bind=!0,e.sessionStarted=!0,e.on("stream:management:ack","connection",function(t){e.conn.sm.process(t)}),e.on("stream:management:request","connection",function(){e.conn.sm.ack()}),e.releaseGroup("sm"),n(null,t)}),e.on("stream:management:failed","sm",function(){e.conn.sm.failed(),e.emit("session:end"),e.releaseGroup("session"),e.releaseGroup("sm"),n(null,t)}),e.conn.sm.id?e.conn.sm.id&&e.conn.sm.allowResume?e.conn.sm.resume():n(null,t):e.negotiatedFeatures.bind?e.conn.sm.enable():n(null,t)},this.on("disconnected",function(){e.sessionStarted=!1,e.negotiatedFeatures.sasl=!1,e.negotiatedFeatures.streamManagement=!1,e.negotiatedFeatures.bind=!1,e.negotiatedFeatures.session=!1,e.releaseGroup("connection")}),this.on("iq:set:roster",function(t){e.emit("roster:update",t),e.sendIq({id:t.id,type:"result"})}),this.on("iq",function(t){var n=t.type,r=Object.keys(t._extensions),o=t.xml.childNodes,a=0;if(i.each(o,function(t){1===t.nodeType&&(a+=1)}),"get"===t.type||"set"===t.type){if(1!=a)return e.sendIq({id:t.id,type:"error",error:{type:"modify",condition:"bad-request"}});if(!r.length)return e.sendIq({id:t.id,type:"error",error:{type:"cancel",condition:"feature-not-implemented"}});var s="iq:"+n+":"+r[0];e.callbacks[s]?e.emit(s,t):e.sendIq({id:t.id,type:"error",error:{type:"cancel",condition:"feature-not-implemented"}})}}),this.on("message",function(t){Object.keys(t.$body).length&&("chat"===t.type||"normal"===t.type?e.emit("chat",t):"groupchat"===t.type&&e.emit("groupchat",t))}),this.on("presence",function(t){var n=t.type||"available";e.emit(n,t)})}var r=t("wildemitter"),i=t("underscore"),o=t("async"),a=t("node-uuid"),s=t("paddle"),u=t("./stanza/sasl"),c=t("./stanza/message"),f=t("./stanza/presence"),l=t("./stanza/iq"),p=t("./jid"),h=t("./websocket"),d=t("hostmeta"),m=t("saslmechanisms");m=new m,m.use(t("sasl-external")),m.use(t("sasl-scram-sha-1")),m.use(t("sasl-digest-md5")),m.use(t("sasl-plain")),m.use(t("sasl-anonymous")),t("./stanza/stream"),t("./stanza/sm"),t("./stanza/roster"),t("./stanza/error"),t("./stanza/streamError"),t("./stanza/streamFeatures"),t("./stanza/bind"),t("./stanza/session"),n.prototype=Object.create(r.prototype,{constructor:{value:n}}),n.prototype.__defineGetter__("stream",function(){return this.conn?this.conn.stream:void 0}),n.prototype.use=function(t){t(this)},n.prototype.nextId=function(){return this._idPrefix+"-"+(this._idCount++).toString(16)},n.prototype.discoverBindings=function(t,e){d(t,function(t,n){if(t)return e(t,[]);var r=[],i=n.links||[];i.forEach(function(t){t.href&&"urn:xmpp:altconnect:websocket"===t.rel&&r.push(t.href)}),e(!1,r)})},n.prototype.getCredentials=function(){var t=this.config.credentials||{},e=new p(this.config.jid),n=t.username||e.local,r=t.server||e.domain,o={username:n,password:this.config.password,server:r,host:r,realm:r,serviceType:"xmpp",serviceName:r},a=i.extend(o,t),s=["saltedPassword","clientKey","serverKey"];return s.forEach(function(t){a[t]&&(a[t]=atob(a[t]))}),a},n.prototype.connect=function(t){var e=this;return i.extend(e.config,t||{}),e.timeoutMonitor||(e.timeoutMonitor=new s.Paddle(e.config.timeout||15),e.timeoutMonitor.start()),e.config.wsURL?e.conn.connect(e.config):(e.discoverBindings(e.config.server,function(t,n){!t&&n.length?(e.config.wsURL=n[0],e.conn.connect(e.config)):e.disconnect()}),void 0)},n.prototype.disconnect=function(){this.timeoutMonitor&&(this.timeoutMonitor.stop(),this.timeoutMonitor=null),this.sessionStarted&&(this.emit("session:end"),this.releaseGroup("session")),this.sessionStarted=!1,this.releaseGroup("connection"),this.conn&&this.conn.disconnect()},n.prototype.send=function(t){this.conn.send(t)},n.prototype.sendMessage=function(t){t=t||{},t.id||(t.id=this.nextId());var e=new c(t);return this.emit("message:sent",e),this.send(e),t.id},n.prototype.sendPresence=function(t){return t=t||{},t.id||(t.id=this.nextId()),this.send(new f(t)),t.id},n.prototype.sendIq=function(t,e){var n=this;t=t||{},e=e||function(){},t.id||(t.id=this.nextId());var r=!1,i=function(t,n){r||(r=!0,e(t,n))};if("get"===t.type||"set"===t.type){var o=this.timeoutMonitor.insure(function(){i({type:"error",error:{condition:"timeout"}},null)}),a=new p(t.to),s={};s[""]=!0,s[a.full]=!0,s[a.bare]=!0,s[a.domain]=!0,s[n.jid.bare]=!0,s[n.jid.domain]=!0;var u=function(e){var r=e.from;s[r.full]&&(o.check_in(),n.off("id:"+t.id,u),e._extensions.error?i(e,null):i(null,e))};this.on("id:"+t.id,"session",u)}return this.send(new l(t)),t.id},n.prototype.getRoster=function(t){var e=this;t=t||function(){},this.sendIq({type:"get",roster:{ver:e.config.rosterVer}},function(n,r){return n?t(n):("result"===r.type&&r.roster.ver&&(e.config.rosterVer=r.roster.ver,e.emit("roster:ver",r.roster.ver)),t(null,r),void 0)})},n.prototype.updateRosterItem=function(t,e){this.sendIq({type:"set",roster:{items:[t]}},e)},n.prototype.removeRosterItem=function(t,e){this.updateRosterItem({jid:t,subscription:"remove"},e)},n.prototype.subscribe=function(t){this.sendPresence({type:"subscribe",to:t})},n.prototype.unsubscribe=function(t){this.sendPresence({type:"unsubscribe",to:t})},n.prototype.acceptSubscription=function(t){this.sendPresence({type:"subscribed",to:t})},n.prototype.denySubscription=function(t){this.sendPresence({type:"unsubscribed",to:t})},n.prototype.JID=function(t){return new p(t)},e.exports=n},{"./jid":3,"./stanza/bind":24,"./stanza/error":32,"./stanza/iq":35,"./stanza/message":37,"./stanza/presence":39,"./stanza/roster":43,"./stanza/sasl":45,"./stanza/session":46,"./stanza/sm":47,"./stanza/stream":48,"./stanza/streamError":49,"./stanza/streamFeatures":50,"./websocket":55,async:56,hostmeta:70,"node-uuid":82,paddle:83,"sasl-anonymous":85,"sasl-digest-md5":87,"sasl-external":89,"sasl-plain":91,"sasl-scram-sha-1":93,saslmechanisms:95,underscore:96,wildemitter:97}],3:[function(t,e){function n(t){t=t||"","string"==typeof t?(this.jid=t,this.parts={}):(this.jid=t.jid,this.parts=t.parts)}n.prototype={constructor:{value:n},toString:function(){return this.jid},get full(){return this.jid},get bare(){if(this.parts.bare)return this.parts.bare;var t=this.jid.indexOf("/");return this.parts.bare=t>0?this.jid.slice(0,t):this.jid,this.parts.bare},get resource(){if(this.parts.resource)return this.parts.resource;var t=this.jid.indexOf("/");return this.parts.resource=t>0?this.jid.slice(t+1):"",this.parts.resource},get local(){if(this.parts.local)return this.parts.local;var t=this.bare,e=t.indexOf("@");return this.parts.local=e>0?t.slice(0,e):t,this.parts.local},get domain(){if(this.parts.domain)return this.parts.domain;var t=this.bare,e=t.indexOf("@");return this.parts.domain=e>0?t.slice(e+1):t,this.parts.domain}},e.exports=n},{}],4:[function(t,e){e.exports=function(t){t.disco.addFeature("urn:xmpp:attention:0"),t.getAttention=function(e,n){n=n||{},n.to=e,n.type="headline",n.attention=!0,t.sendMessage(n)},t.on("message",function(e){e._extensions._attention&&t.emit("attention",e)})}},{}],5:[function(t,e){t("../stanza/avatar"),e.exports=function(t){t.disco.addFeature("urn:xmpp:avatar:metadata+notify"),t.on("pubsubEvent",function(e){e.event._extensions.updated&&"urn:xmpp:avatar:metadata"===e.event.updated.node&&t.emit("avatar",{jid:e.from,avatars:e.event.updated.published[0].avatars})}),t.publishAvatar=function(e,n,r){t.publish("","urn:xmpp:avatar:data",{id:e,avatarData:n},r)},t.useAvatars=function(e,n){t.publish("","urn:xmpp:avatar:metadata",{id:"current",avatars:e},n)},t.getAvatar=function(e,n,r){t.getItem(e,"urn:xmpp:avatar:data",n,r)}}},{"../stanza/avatar":23}],6:[function(t,e){t("../stanza/bookmarks"),e.exports=function(t){t.getBookmarks=function(t){this.getPrivateData({bookmarks:{}},t)},t.setBookmarks=function(t,e){this.setPrivateData({bookmarks:t},e)}}},{"../stanza/bookmarks":25}],7:[function(t,e){t("../stanza/carbons"),e.exports=function(t){t.disco.addFeature("urn:xmpp:carbons:2"),t.enableCarbons=function(t){this.sendIq({type:"set",enableCarbons:!0},t)},t.disableCarbons=function(t){this.sendIq({type:"set",disableCarbons:!0},t)},t.on("message",function(e){return e._extensions.carbonSent?t.emit("carbon:sent",e):e._extensions.carbonReceived?t.emit("carbon:received",e):void 0})}},{"../stanza/carbons":27}],8:[function(t,e){t("../stanza/chatstates"),e.exports=function(t){t.disco.addFeature("http://jabber.org/protocol/chatstates"),t.on("message",function(e){e.chatState&&t.emit("chatState",{to:e.to,from:e.from,chatState:e.chatState})})}},{"../stanza/chatstates":28}],9:[function(t,e){e.exports=function(t){t.disco.addFeature("urn:xmpp:message-correct:0"),t.on("message",function(e){e.replace&&(t.emit("replace",e),t.emit("replace:"+e.id,e))})}},{}],10:[function(t,e){t("../stanza/delayed"),e.exports=function(t){t.disco.addFeature("urn:xmpp:delay")}},{"../stanza/delayed":30}],11:[function(t,e){function n(t,e,n){"sha-1"===e&&(e="sha1");var i=r(t,e);return i&&i==n}function r(t,e){var n="",r=t.features.sort(),i=[],u={},c=[];o.forEach(t.identities,function(t){i.push([t.category||"",t.type||"",t.lang||"",t.name||""].join("/"))});var f=i.length,l=r.length;if(i=o.unique(i,!0),r=o.unique(r,!0),l!=r.length||f!=i.length)return!1;n+=i.join("<")+"<",n+=r.join("<")+"<";var p=!1;if(o.forEach(t.extensions,function(t){for(var e=t.fields,n=0,r=e.length;r>n;n++)if("FORM_TYPE"==e[n].name&&"hidden"==e[n].type){var i=e[n].value;return u[i]?(p=!0,void 0):(u[i]=t,c.push(i),void 0)}}),p)return!1;c.sort(),o.forEach(c,function(t){var e=u[t],r={},i=[];n+="<"+t,o.forEach(e.fields,function(t){var e=t.name;if("FORM_TYPE"!=e){var n=t.value||"";"object"!=typeof n&&(n=n.split("\n")),r[e]=n.sort(),i.push(e)}}),i.sort(),o.forEach(i,function(t){n+="<"+t,o.forEach(r[t],function(t){n+="<"+t})})}),"sha-1"===e&&(e="sha1");var h=a.createHash(e).update(s.encode(n)).digest("base64"),d=4-h.length%4;4===d&&(d=0);for(var m=0;d>m;m++)h+="=";return h}function i(){this.features={},this.identities={},this.extensions={},this.items={},this.caps={}}var o=t("underscore"),a=t("crypto");t("../stanza/disco"),t("../stanza/caps");var s={encode:function(t){return unescape(encodeURIComponent(t))},decode:function(t){return decodeURIComponent(escape(t))}};i.prototype={constructor:{value:i},addFeature:function(t,e){e=e||"",this.features[e]||(this.features[e]=[]),this.features[e].push(t)},addIdentity:function(t,e){e=e||"",this.identities[e]||(this.identities[e]=[]),this.identities[e].push(t)},addItem:function(t,e){e=e||"",this.items[e]||(this.items[e]=[]),this.items[e].push(t)},addExtension:function(t,e){e=e||"",this.extensions[e]||(this.extensions[e]=[]),this.extensions[e].push(t)}},e.exports=function(t){t.disco=new i(t),t.disco.addFeature("http://jabber.org/protocol/disco#info"),t.disco.addIdentity({category:"client",type:"web"}),t.getDiscoInfo=function(t,e,n){this.sendIq({to:t,type:"get",discoInfo:{node:e}},n)},t.getDiscoItems=function(t,e,n){this.sendIq({to:t,type:"get",discoItems:{node:e}},n)},t.updateCaps=function(){var e=this.config.capsNode||"https://stanza.io",n=JSON.parse(JSON.stringify({identities:this.disco.identities[""],features:this.disco.features[""],extensions:this.disco.extensions[""]})),i=r(n,"sha-1");return this.disco.caps={node:e,hash:"sha-1",ver:i},e=e+"#"+i,this.disco.features[e]=n.features,this.disco.identities[e]=n.identities,this.disco.extensions[e]=n.extensions,t.getCurrentCaps()},t.getCurrentCaps=function(){var e=t.disco.caps;if(!e.ver)return{ver:null,discoInfo:null};var n=e.node+"#"+e.ver;return{ver:e.ver,discoInfo:{identities:t.disco.identities[n],features:t.disco.features[n],extensions:t.disco.extensions[n]}}},t.on("presence",function(e){e._extensions.caps&&t.emit("disco:caps",e)}),t.on("iq:get:discoInfo",function(e){var n=e.discoInfo.node,r=e.discoInfo.node;n===t.disco.caps.node+"#"+t.disco.caps.ver&&(r=n,n=""),t.sendIq(e.resultReply({discoInfo:{node:r,identities:t.disco.identities[n]||[],features:t.disco.features[n]||[],extensions:t.disco.extensions[n]||[]}}))}),t.on("iq:get:discoItems",function(e){var n=e.discoInfo.node;t.sendIq(e.resultReply({discoItems:{node:n,items:t.disco.items[n]||[]}}))}),t.verifyVerString=n,t.generateVerString=r}},{"../stanza/caps":26,"../stanza/disco":31,crypto:63,underscore:96}],12:[function(t,e){t("../stanza/forwarded"),e.exports=function(t){t.disco.addFeature("urn:xmpp:forward:0")}},{"../stanza/forwarded":33}],13:[function(t,e){t("../stanza/idle"),e.exports=function(t){t.disco.addFeature("urn:xmpp:idle:0")}},{"../stanza/idle":34}],14:[function(t,e){t("../stanza/visibility"),e.exports=function(t){t.goInvisible=function(){this.sendIq({type:"set",invisible:!0})},t.goVisible=function(){this.sendIq({type:"set",visible:!0})}}},{"../stanza/visibility":54}],15:[function(t,e){t("../stanza/mam"),e.exports=function(t){t.disco.addFeature("urn:xmpp:mam:tmp"),t.getHistory=function(t,e){var n=this,r=this.nextId();t=t||{},t.queryid=r;var i=[];this.on("mam:"+r,"session",function(t){i.push(t)}),e=e||function(){},this.sendIq({type:"get",id:r,mamQuery:t},function(t,o){t?e(t):(n.off("mam:"+r),o.mamQuery.results=i,e(null,o))})},t.getHistoryPreferences=function(e){t.sendIq({type:"get",mamPrefs:{}},e)},t.setHistoryPreferences=function(e,n){t.sendIq({type:"set",mamPrefs:e},n)},t.on("message",function(e){e._extensions.mam&&t.emit("mam:"+e.mam.queryid,e)})}},{"../stanza/mam":36}],16:[function(t,e){t("../stanza/muc"),e.exports=function(t){t.joinRoom=function(t,e,n){n=n||{},n.to=t+"/"+e,n.caps=this.disco.caps,n.joinMuc=n.joinMuc||{},this.sendPresence(n)},t.leaveRoom=function(t,e,n){n=n||{},n.to=t+"/"+e,n.type="unavailable",this.sendPresence(n)}}},{"../stanza/muc":38}],17:[function(t,e){t("../stanza/private"),e.exports=function(t){t.getPrivateData=function(t,e){this.sendIq({type:"get",privateStorage:t},e)},t.setPrivateData=function(t,e){this.sendIq({type:"set",privateStorage:t},e)}}},{"../stanza/private":40}],18:[function(t,e){t("../stanza/pubsub"),e.exports=function(t){t.on("message",function(e){e._extensions.event&&t.emit("pubsubEvent",e)}),t.subscribeToNode=function(e,n,r){t.sendIq({type:"set",to:e,pubsub:{subscribe:{node:n.node,jid:n.jid||t.jid}}},r)},t.unsubscribeFromNode=function(e,n,r){t.sendIq({type:"set",to:e,pubsub:{unsubscribe:{node:n.node,jid:n.jid||t.jid.split("/")[0]}}},r)},t.publish=function(e,n,r,i){t.sendIq({type:"set",to:e,pubsub:{publish:{node:n,item:r}}},i)},t.getItem=function(e,n,r,i){t.sendIq({type:"get",to:e,pubsub:{retrieve:{node:n,item:r}}},i)},t.getItems=function(e,n,r,i){r=r||{},r.node=n,t.sendIq({type:"get",to:e,pubsub:{retrieve:{node:n,max:r.max},rsm:r.rsm}},i)},t.retract=function(e,n,r,i,o){t.sendIq({type:"set",to:e,pubsub:{retract:{node:n,notify:i,id:r}}},o)},t.purgeNode=function(e,n,r){t.sendIq({type:"set",to:e,pubsubOwner:{purge:n}},r)},t.deleteNode=function(e,n,r){t.sendIq({type:"set",to:e,pubsubOwner:{del:n}},r)},t.createNode=function(e,n,r,i){var o={type:"set",to:e,pubsubOwner:{create:n}};r&&(o.pubsubOwner.config={form:r}),t.sendIq(o,i)}}},{"../stanza/pubsub":41}],19:[function(t,e){t("../stanza/receipts"),e.exports=function(t){t.disco.addFeature("urn:xmpp:receipts"),t.on("message",function(e){var n={normal:!0,chat:!0,headline:!0};n[e.type]&&e.requestReceipt&&!e._extensions.receipt&&t.sendMessage({to:e.from,receipt:{id:e.id},id:e.id}),e._extensions.receipt&&t.emit("receipt:"+e.receipt.id)})}},{"../stanza/receipts":42}],20:[function(t,e){t("../stanza/time"),e.exports=function(t){t.disco.addFeature("urn:xmpp:time"),t.getTime=function(t,e){this.sendIq({to:t,type:"get",time:!0},e)},t.on("iq:get:time",function(e){var n=new Date;t.sendIq(e.resultReply({time:{utc:n,tzo:n.getTimezoneOffset()}}))})}},{"../stanza/time":51}],21:[function(t,e){t("../stanza/version"),e.exports=function(t){t.disco.addFeature("jabber:iq:version"),t.on("iq:get:version",function(e){t.sendIq(e.resultReply({version:t.config.version||{name:"stanza.io"}}))}),t.getSoftwareVersion=function(t,e){this.sendIq({to:t,type:"get",version:{}},e)}}},{"../stanza/version":53}],22:[function(t,e){function n(t,e){return(t%e+e)%e}function r(t){this.conn=t,this.id=!1,this.allowResume=!0,this.started=!1,this.lastAck=0,this.handled=0,this.windowSize=1,this.windowCount=0,this.unacked=[]}var i=t("./stanza/sm"),o=Math.pow(2,32);r.prototype={constructor:{value:r},enable:function(){var t=new i.Enable;t.resume=this.allowResume,this.conn.send(t),this.handled=0,this.started=!0},resume:function(){var t=new i.Resume({h:this.handled,previd:this.id});this.conn.send(t),this.started=!0},enabled:function(t){this.id=t.id},resumed:function(t){this.id=t.id,t.h&&this.process(t,!0)},failed:function(){this.started=!1,this.id=!1,this.lastAck=0,this.handled=0,this.windowCount=0,this.unacked=[]},ack:function(){this.conn.send(new i.Ack({h:this.handled}))},request:function(){this.conn.send(new i.Request)},process:function(t,e){for(var r=this,i=n(t.h-this.lastAck,o),a=0;i>a&&this.unacked.length>0;a++)this.conn.emit("stanza:acked",this.unacked.shift());if(e){var s=this.unacked;this.unacked=[],s.forEach(function(t){r.conn.send(t)})}this.lastAck=t.h},track:function(t){var e=t._name,n={message:!0,presence:!0,iq:!0};this.started&&n[e]&&(this.unacked.push(t),this.windowCount+=1,this.windowCount==this.windowSize&&(this.request(),this.windowCount=0))},handle:function(){this.started&&(this.handled=n(this.handled+1,o))}},e.exports=r},{"./stanza/sm":47}],23:[function(t,e){var n=t("underscore"),r=t("jxt"),i=t("./pubsub").Item,o=t("./pubsub").EventItem,a=e.exports=r.define({name:"avatar",namespace:"urn:xmpp:avatar:metadata",element:"info",fields:{id:r.attribute("id"),bytes:r.attribute("bytes"),height:r.attribute("height"),width:r.attribute("width"),type:r.attribute("type","image/png"),url:r.attribute("url")}}),s={get:function(){var t=r.find(this.xml,"urn:xmpp:avatar:metadata","metadata"),e=[];if(t.length){var i=r.find(t[0],"urn:xmpp:avatar:metadata","info");n.forEach(i,function(t){e.push(new a({},t))})}return e},set:function(t){var e=r.findOrCreate(this.xml,"urn:xmpp:avatar:metadata","metadata");r.setAttribute(e,"xmlns","urn:xmpp:avatar:metadata"),n.forEach(t,function(t){var n=new a(t);e.appendChild(n.xml)})}};r.add(i,"avatars",s),r.add(o,"avatars",s),r.add(i,"avatarData",r.subText("urn:xmpp:avatar:data","data")),r.add(o,"avatarData",r.subText("urn:xmpp:avatar:data","data"))},{"./pubsub":41,jxt:77,underscore:96}],24:[function(t,e){var n=t("jxt"),r=t("./iq"),i=t("./streamFeatures"),o=t("./util"),a="urn:ietf:params:xml:ns:xmpp-bind",s=e.exports=n.define({name:"bind",namespace:a,element:"bind",fields:{resource:n.subText(a,"resource"),jid:o.jidSub(a,"jid")}});n.extend(r,s),n.extend(i,s)},{"./iq":35,"./streamFeatures":50,"./util":52,jxt:77}],25:[function(t,e){var n=t("jxt"),r=t("./util"),i=t("./private"),o=n.define({name:"conference",namespace:"storage:bookmarks",element:"conference",fields:{name:n.attribute("name"),autoJoin:n.boolAttribute("autojoin"),jid:r.jidAttribute("jid"),nick:n.subText("storage:bookmarks","nick")}}),a=e.exports=n.define({name:"bookmarks",namespace:"storage:bookmarks",element:"storage"});n.extend(i,a),n.extend(a,o,"conferences")},{"./private":40,"./util":52,jxt:77}],26:[function(t,e){var n=t("jxt"),r=t("./presence"),i=t("./streamFeatures"),o=e.exports=n.define({name:"caps",namespace:"http://jabber.org/protocol/caps",element:"c",fields:{ver:n.attribute("ver"),node:n.attribute("node"),hash:n.attribute("hash"),ext:n.attribute("ext")}});n.extend(r,o),n.extend(i,o)},{"./presence":39,"./streamFeatures":50,jxt:77}],27:[function(t,e,n){var r=t("jxt"),i=t("./message"),o=t("./iq"),a=t("./forwarded");n.Sent=r.define({name:"carbonSent",eventName:"carbon:sent",namespace:"urn:xmpp:carbons:2",element:"sent"}),n.Received=r.define({name:"carbonReceived",eventName:"carbon:received",namespace:"urn:xmpp:carbons:2",element:"received"}),n.Private=r.define({name:"carbonPrivate",eventName:"carbon:private",namespace:"urn:xmpp:carbons:2",element:"private"}),n.Enable=r.define({name:"enableCarbons",namespace:"urn:xmpp:carbons:2",element:"enable"}),n.Disable=r.define({name:"disableCarbons",namespace:"urn:xmpp:carbons:2",element:"disable"}),r.extend(n.Sent,a),r.extend(n.Received,a),r.extend(i,n.Sent),r.extend(i,n.Received),r.extend(i,n.Private),r.extend(o,n.Enable),r.extend(o,n.Disable)},{"./forwarded":33,"./iq":35,"./message":37,jxt:77}],28:[function(t){var e=t("jxt"),n=t("./message"),r="http://jabber.org/protocol/chatstates",i=e.define({name:"chatStateActive",eventName:"chat:active",namespace:r,element:"active"}),o=e.define({name:"chatStateComposing",eventName:"chat:composing",namespace:r,element:"composing"}),a=e.define({name:"chatStatePaused",eventName:"chat:paused",namespace:r,element:"paused"}),s=e.define({name:"chatStateInactive",eventName:"chat:inactive",namespace:r,element:"inactive"}),u=e.define({name:"chatStateGone",eventName:"chat:gone",namespace:r,element:"gone"});e.extend(n,i),e.extend(n,o),e.extend(n,a),e.extend(n,s),e.extend(n,u),e.add(n,"chatState",{get:function(){for(var t=this,e=["Active","Composing","Paused","Inactive","Gone"],n=0;n<e.length;n++)if(t._extensions["chatState"+e[n]])return e[n].toLowerCase();return""},set:function(t){var e=this,n=["Active","Composing","Paused","Inactive","Gone"];n.forEach(function(t){e._extensions["chatState"+t]&&(e.xml.removeChild(e._extensions["chatState"+t].xml),delete e._extensions["chatState"+t])}),t&&this["chatState"+t.charAt(0).toUpperCase()+t.slice(1)]}})},{"./message":37,jxt:77}],29:[function(t,e,n){t("underscore");var r=t("jxt");t("./util");var i=t("./message");n.DataForm=r.define({name:"form",namespace:"jabber:x:data",element:"x",fields:{title:r.subText("title"),instructions:r.multiSubText("jabber:x:data","instructions"),type:r.attribute("type","form")}}),n.Field=r.define({name:"field",namespace:"jabber:x:data",element:"field",init:function(t){this._type=t.type||this.type},fields:{type:{get:function(){return r.getAttribute(this.xml,"type","text-single")},set:function(t){this._type=t,r.setAttribute(this.xml,"type",t)}},name:r.attribute("var"),desc:r.subText("desc"),required:r.boolSub("jabber:x:data","required"),label:r.attribute("label"),value:{get:function(){var t=r.getMultiSubText(this.xml,this._NS,"value");return"boolean"===this._type?"1"===t[0]||"true"===t[0]:t.length>1?"text-multi"===this._type?t.join("\n"):t:t[0]},set:function(t){"boolean"===this._type?r.setSubText(this.xml,this._NS,"value",t?"1":"0"):("text-multi"===this._type&&(t=t.split("\n")),r.setMultiSubText(this.xml,this._NS,"value",t))}},options:{get:function(){var t=this;return r.getMultiSubText(this.xml,this._NS,"option",function(e){return r.getSubText(e,t._NS,"value")})},set:function(t){var e=this;r.setMultiSubText(this.xml,this._NS,"option",t,function(t){var n=document.createElementNS(e._NS,"option"),r=document.createElementNS(e._NS,"value");n.appendChild(r),r.textContent=t,e.xml.appendChild(n)})}}}}),r.extend(i,n.DataForm)},{"./message":37,"./util":52,jxt:77,underscore:96}],30:[function(t,e){var n=t("jxt"),r=t("./message"),i=t("./presence"),o=t("./util"),a=e.exports=n.define({name:"delay",namespace:"urn:xmpp:delay",element:"delay",fields:{from:o.jidAttribute("from"),stamp:o.dateAttribute("stamp"),reason:n.text()}});n.extend(r,a),n.extend(i,a)},{"./message":37,"./presence":39,"./util":52,jxt:77}],31:[function(t,e,n){t("underscore");var r=t("jxt"),i=t("../jid"),o=t("./iq"),a=t("./rsm"),s=t("./dataforms").DataForm;n.DiscoInfo=r.define({name:"discoInfo",namespace:"http://jabber.org/protocol/disco#info",element:"query",fields:{node:r.attribute("node"),identities:{get:function(){var t=[],e=r.find(this.xml,this._NS,"identity");return e.forEach(function(e){t.push({category:r.getAttribute(e,"category"),type:r.getAttribute(e,"type"),lang:e.getAttributeNS(r.XML_NS,"lang"),name:r.getAttribute(e,"name")})}),t},set:function(t){var e=this,n=r.find(this.xml,this._NS,"identity");n.forEach(function(t){e.xml.removeChild(t)}),t.forEach(function(t){var n=document.createElementNS(e._NS,"identity");r.setAttribute(n,"category",t.category),r.setAttribute(n,"type",t.type),r.setAttribute(n,"name",t.name),t.lang&&n.setAttributeNS(r.XML_NS,"lang",t.lang),e.xml.appendChild(n)})}},features:{get:function(){var t=[],e=r.find(this.xml,this._NS,"feature");return e.forEach(function(e){t.push(e.getAttribute("var"))}),t},set:function(t){var e=this,n=r.find(this.xml,this._NS,"feature");n.forEach(function(t){e.xml.removeChild(t)}),t.forEach(function(t){var n=document.createElementNS(e._NS,"feature");n.setAttribute("var",t),e.xml.appendChild(n)})}}}}),n.DiscoItems=r.define({name:"discoItems",namespace:"http://jabber.org/protocol/disco#items",element:"query",fields:{node:r.attribute("node"),items:{get:function(){var t=[],e=r.find(this.xml,this._NS,"item");return e.forEach(function(e){t.push({jid:new i(r.getAttribute(e,"jid")),node:r.getAttribute(e,"node"),name:r.getAttribute(e,"name")})}),t},set:function(t){var e=this,n=r.find(this.xml,this._NS,"item");n.forEach(function(t){e.xml.removeChild(t)}),t.forEach(function(t){var n=document.createElementNS(e._NS,"item");r.setAttribute(n,"jid",t.jid.toString()),r.setAttribute(n,"node",t.node),r.setAttribute(n,"name",t.name),e.xml.appendChild(n)})}}}}),r.extend(o,n.DiscoInfo),r.extend(o,n.DiscoItems),r.extend(n.DiscoItems,a),r.extend(n.DiscoInfo,s,"extensions")},{"../jid":3,"./dataforms":29,"./iq":35,"./rsm":44,jxt:77,underscore:96}],32:[function(t,e){t("underscore");var n=t("jxt"),r=t("./util"),i=t("./message"),o=t("./presence"),a=t("./iq"),s="urn:ietf:params:xml:ns:xmpp-stanzas",u=["bad-request","conflict","feature-not-implemented","forbidden","gone","internal-server-error","item-not-found","jid-malformed","not-acceptable","not-allowed","not-authorized","payment-required","recipient-unavailable","redirect","registration-required","remote-server-not-found","remote-server-timeout","resource-constraint","service-unavailable","subscription-required","undefined-condition","unexpected-request"],c=e.exports=n.define({name:"error",namespace:"jabber:client",element:"error",fields:{lang:{get:function(){return(this.parent||{}).lang||""}},condition:{get:function(){var t=this,e=[];return u.forEach(function(r){var i=n.find(t.xml,s,r);i.length&&e.push(i[0].tagName)}),e[0]||""},set:function(t){var e=this;if(u.forEach(function(t){var r=n.find(e.xml,e._ERR_NS,t);r.length&&e.xml.removeChild(r[0])}),t){var r=document.createElementNS(this._ERR_NS,t);r.setAttribute("xmlns",this._ERR_NS),this.xml.appendChild(r)}}},gone:{get:function(){return n.getSubText(this.xml,s,"gone")},set:function(t){this.condition="gone",n.setSubText(this.xml,s,"gone",t)}},redirect:{get:function(){return n.getSubText(this.xml,s,"redirect")},set:function(t){this.condition="redirect",n.setSubText(this.xml,s,"redirect",t)}},code:n.attribute("code"),type:n.attribute("type"),by:r.jidAttribute("by"),$text:{get:function(){return n.getSubLangText(this.xml,s,"text",this.lang)}},text:{get:function(){var t=this.$text;return t[this.lang]||""},set:function(t){n.setSubLangText(this.xml,s,"text",t,this.lang)}}}});n.extend(i,c),n.extend(o,c),n.extend(a,c)},{"./iq":35,"./message":37,"./presence":39,"./util":52,jxt:77,underscore:96}],33:[function(t,e){var n=t("jxt"),r=t("./message"),i=t("./presence"),o=t("./iq"),a=t("./delayed"),s=e.exports=n.define({name:"forwarded",eventName:"forward",namespace:"urn:xmpp:forward:0",element:"forwarded"});n.extend(r,s),n.extend(s,r),n.extend(s,i),n.extend(s,o),n.extend(s,a)},{"./delayed":30,"./iq":35,"./message":37,"./presence":39,jxt:77}],34:[function(t,e){var n=t("jxt"),r=t("./util"),i=t("./presence"),o=e.exports=n.define({name:"idle",namespace:"urn:xmpp:idle:0",element:"idle",fields:{since:r.dateAttribute("since")}});n.extend(i,o)},{"./presence":39,"./util":52,jxt:77}],35:[function(t,e){var n=t("jxt"),r=t("./util"),i=e.exports=n.define({name:"iq",namespace:"jabber:client",element:"iq",topLevel:!0,fields:{lang:r.langAttribute(),id:n.attribute("id"),to:r.jidAttribute("to"),from:r.jidAttribute("from"),type:n.attribute("type")}});
-i.prototype.resultReply=function(t){return t.to=this.from,t.id=this.id,t.type="result",new i(t)},i.prototype.errorReply=function(t){return t.to=this.from,t.id=this.id,t.type="error",new i(t)}},{"./util":52,jxt:77}],36:[function(t,e,n){var r=t("jxt"),i=t("./util"),o=t("./message"),a=t("./iq"),s=t("./forwarded"),u=t("./rsm"),c=t("../jid");n.MAMQuery=r.define({name:"mamQuery",namespace:"urn:xmpp:mam:tmp",element:"query",fields:{queryid:r.attribute("queryid"),start:i.dateSub("urn:xmpp:mam:tmp","start"),end:i.dateSub("urn:xmpp:mam:tmp","end"),"with":i.jidSub("urn:xmpp:mam:tmp","with")}}),n.Result=r.define({name:"mam",eventName:"mam:result",namespace:"urn:xmpp:mam:tmp",element:"result",fields:{queryid:r.attribute("queryid"),id:r.attribute("id")}}),n.Archived=r.define({name:"mamArchived",namespace:"urn:xmpp:mam:tmp",element:"archived",fields:{by:i.jidAttribute("by"),id:r.attribute("id")}}),n.Prefs=r.define({name:"mamPrefs",namespace:"urn:xmpp:mam:tmp",element:"prefs",fields:{defaultCondition:r.attribute("default"),always:{get:function(){var t=[],e=r.find(this.xml,this._NS,"always");if(0===e.length)return t;e=e[0];var n=r.getMultiSubText(e,this._NS,"jid");return n.forEach(function(e){t.push(new c(e.textContent))}),t},set:function(t){if(t.length>0){var e=r.find(this.xml,this._NS,"always");r.setMultiSubText(e,this._NS,"jid",t)}}},never:{get:function(){var t=[],e=r.find(this.xml,this._NS,"always");if(0===e.length)return t;e=e[0];var n=r.getMultiSubText(e,this._NS,"jid");return n.forEach(function(e){t.push(new c(e.textContent))}),t},set:function(t){if(t.length>0){var e=r.find(this.xml,this._NS,"never");r.setMultiSubText(e,this._NS,"jid",t)}}}}}),r.extend(o,n.Archived,"archived"),r.extend(a,n.MAMQuery),r.extend(a,n.Prefs),r.extend(o,n.Result),r.extend(n.Result,s),r.extend(n.MAMQuery,u)},{"../jid":3,"./forwarded":33,"./iq":35,"./message":37,"./rsm":44,"./util":52,jxt:77}],37:[function(t,e){t("underscore");var n=t("jxt"),r=t("./util");e.exports=n.define({name:"message",namespace:"jabber:client",element:"message",topLevel:!0,fields:{lang:r.langAttribute(),id:n.attribute("id"),to:r.jidAttribute("to"),from:r.jidAttribute("from"),type:n.attribute("type","normal"),thread:n.subText("jabber:client","thread"),parentThread:n.subAttribute("jabber:client","thread","parent"),$body:{get:function(){return n.getSubLangText(this.xml,this._NS,"body",this.lang)}},body:{get:function(){var t=this.$body;return t[this.lang]||""},set:function(t){n.setSubLangText(this.xml,this._NS,"body",t,this.lang)}},attention:n.boolSub("urn:xmpp:attention:0","attention"),replace:n.subAttribute("urn:xmpp:message-correct:0","replace","id")}})},{"./util":52,jxt:77,underscore:96}],38:[function(t,e,n){var r=t("jxt");t("./message");var i=t("./presence");t("./iq");var o="http://jabber.org/protocol/muc";n.MUCJoin=r.define({name:"joinMuc",namespace:o,element:"x",fields:{password:r.subText(o,"password"),history:{get:function(){var t={},e=r.find(this.xml,this._NS,"history");if(!e.length)return{};e=e[0];var n=e.getAttribute("maxchars")||"",i=e.getAttribute("maxstanas")||"",o=e.getAttribute("seconds")||"",a=e.getAttribute("since")||"";n&&(t.maxchars=parseInt(n,10)),i&&(t.maxstanzas=parseInt(i,10)),o&&(t.seconds=parseInt(o,10)),a&&(t.since=new Date(a))},set:function(t){var e=r.find(this.xml,this._NS,"history");if(e.length)for(var n=0;n<e.length;n++)this.xml.removeChild(e[n]);var i=document.createElementNS(this._NS,"history");this.xml.appendChild(i),t.maxchars&&i.setAttribute(""+t.maxchars),t.maxstanzas&&i.setAttribute(""+t.maxstanzas),t.seconds&&i.setAttribute(""+t.seconds),t.since&&i.setAttribute(t.since.toISOString())}}}}),r.extend(i,n.MUCJoin)},{"./iq":35,"./message":37,"./presence":39,jxt:77}],39:[function(t,e){t("underscore");var n=t("jxt"),r=t("./util");e.exports=n.define({name:"presence",namespace:"jabber:client",element:"presence",topLevel:!0,fields:{lang:r.langAttribute(),id:n.attribute("id"),to:r.jidAttribute("to"),from:r.jidAttribute("from"),priority:n.subText("jabber:client","priority","0"),show:n.subText("jabber:client","show"),type:{get:function(){return n.getAttribute(this.xml,"type","available")},set:function(t){"available"===t&&(t=!1),n.setAttribute(this.xml,"type",t)}},$status:{get:function(){return n.getSubLangText(this.xml,this._NS,"status",this.lang)}},status:{get:function(){var t=this.$status;return t[this.lang]||""},set:function(t){n.setSubLangText(this.xml,this._NS,"status",t,this.lang)}}}})},{"./util":52,jxt:77,underscore:96}],40:[function(t,e){var n=t("jxt"),r=t("./iq"),i=e.exports=n.define({name:"privateStorage",namespace:"jabber:iq:private",element:"query"});n.extend(r,i)},{"./iq":35,jxt:77}],41:[function(t,e,n){var r=t("underscore"),i=t("jxt"),o=t("./util"),a=t("./iq"),s=t("./message"),u=t("./dataforms").DataForm,c=t("./rsm");t("../jid");var f="http://jabber.org/protocol/pubsub",l="http://jabber.org/protocol/pubsub#owner",p="http://jabber.org/protocol/pubsub#event";n.Pubsub=i.define({name:"pubsub",namespace:"http://jabber.org/protocol/pubsub",element:"pubsub",fields:{publishOptions:{get:function(){var t=i.find(this.xml,this._NS,"publish-options");return t.length&&t[0].childNodes.length?new u({},t[0].childNodes[0]):void 0},set:function(t){var e=i.findOrCreate(this.xml,this._NS,"publish-options");if(t){var n=new u(t);e.appendChild(n.xml)}}}}}),n.PubsubOwner=i.define({name:"pubsubOwner",namespace:l,element:"pubsub",fields:{create:i.subAttribute(l,"create","node"),purge:i.subAttribute(l,"purge","node"),del:i.subAttribute(l,"delete","node"),redirect:{get:function(){var t=i.find(this.xml,this._NS,"delete");return t.length?i.getSubAttribute(t,this._NS,"redirect","uri"):""},set:function(t){var e=i.findOrCreate(this.xml,this._NS,"delete");i.setSubAttribute(e,this._NS,"redirect","uri",t)}}}}),n.Configure=i.define({name:"config",namespace:l,element:"configure",fields:{node:i.attribute("node")}}),n.Event=i.define({name:"event",namespace:p,element:"event"}),n.Subscribe=i.define({name:"subscribe",namespace:f,element:"subscribe",fields:{node:i.attribute("node"),jid:o.jidAttribute("jid")}}),n.Subscription=i.define({name:"subscription",namespace:f,element:"subscription",fields:{node:i.attribute("node"),jid:o.jidAttribute("jid"),subid:i.attribute("subid"),type:i.attribute("subscription")}}),n.Unsubscribe=i.define({name:"unsubscribe",namespace:f,element:"unsubscribe",fields:{node:i.attribute("node"),jid:o.jidAttribute("jid")}}),n.Publish=i.define({name:"publish",namespace:f,element:"publish",fields:{node:i.attribute("node")}}),n.Retract=i.define({name:"retract",namespace:f,element:"retract",fields:{node:i.attribute("node"),notify:i.boolAttribute("notify"),id:i.subAttribute(f,"item","id")}}),n.Retrieve=i.define({name:"retrieve",namespace:f,element:"items",fields:{node:i.attribute("node"),max:i.attribute("max_items")}}),n.Item=i.define({name:"item",namespace:f,element:"item",fields:{id:i.attribute("id")}}),n.EventItems=i.define({name:"updated",namespace:p,element:"items",fields:{node:i.attribute("node"),retracted:{get:function(){var t=[],e=i.find(this.xml,this._NS,"retract");return r.forEach(e,function(e){t.push(e.getAttribute("id"))}),t},set:function(t){var e=this;r.forEach(t,function(t){var n=document.createElementNS(e._NS,"retract");n.setAttribute("id",t),this.xml.appendChild(n)})}}}}),n.EventItem=i.define({name:"eventItem",namespace:p,element:"item",fields:{id:i.attribute("id"),node:i.attribute("node"),publisher:o.jidAttribute("publisher")}}),i.extend(n.Pubsub,n.Subscribe),i.extend(n.Pubsub,n.Unsubscribe),i.extend(n.Pubsub,n.Publish),i.extend(n.Pubsub,n.Retrieve),i.extend(n.Pubsub,n.Subscription),i.extend(n.PubsubOwner,n.Configure),i.extend(n.Publish,n.Item,"items"),i.extend(n.Configure,u),i.extend(n.Pubsub,c),i.extend(n.Event,n.EventItems),i.extend(n.EventItems,n.EventItem,"published"),i.extend(s,n.Event),i.extend(a,n.Pubsub),i.extend(a,n.PubsubOwner)},{"../jid":3,"./dataforms":29,"./iq":35,"./message":37,"./rsm":44,"./util":52,jxt:77,underscore:96}],42:[function(t,e){var n=t("jxt"),r=t("./message");n.add(r,"requestReceipt",n.boolSub("urn:xmpp:receipts","request"));var i=e.exports=n.define({name:"receipt",namespace:"urn:xmpp:receipts",element:"receipt",fields:{id:n.attribute("id")}});n.extend(r,i)},{"./message":37,jxt:77}],43:[function(t,e){t("underscore");var n=t("jxt"),r=t("./iq"),i=t("../jid"),o=e.exports=n.define({name:"roster",namespace:"jabber:iq:roster",element:"query",fields:{ver:{get:function(){return n.getAttribute(this.xml,"ver")},set:function(t){var e=""===t;n.setAttribute(this.xml,"ver",t,e)}},items:{get:function(){var t=this,e=n.find(this.xml,this._NS,"item");if(!e.length)return[];var r=[];return e.forEach(function(e){var o={jid:new i(n.getAttribute(e,"jid","")),name:n.getAttribute(e,"name",void 0),subscription:n.getAttribute(e,"subscription","none"),ask:n.getAttribute(e,"ask",void 0),groups:[]},a=n.find(e,t._NS,"group");a.forEach(function(t){o.groups.push(t.textContent)}),r.push(o)}),r},set:function(t){var e=this;t.forEach(function(t){var r=document.createElementNS(e._NS,"item");n.setAttribute(r,"jid",t.jid.toString()),n.setAttribute(r,"name",t.name),n.setAttribute(r,"subscription",t.subscription),n.setAttribute(r,"ask",t.ask),(t.groups||[]).forEach(function(t){var n=document.createElementNS(e._NS,"group");n.textContent=t,r.appendChild(n)}),e.xml.appendChild(r)})}}}});n.extend(r,o)},{"../jid":3,"./iq":35,jxt:77,underscore:96}],44:[function(t,e){var n=t("jxt"),r=t("./util"),i="http://jabber.org/protocol/rsm";e.exports=n.define({name:"rsm",namespace:i,element:"set",fields:{after:n.subText(i,"after"),before:{get:function(){return n.getSubText(this.xml,this._NS,"before")},set:function(t){t===!0?n.findOrCreate(this.xml,this._NS,"before"):n.setSubText(this.xml,this._NS,"before",t)}},count:r.numberSub(i,"count"),first:n.subText(i,"first"),firstIndex:n.subAttribute(i,"first","index"),index:n.subText(i,"index"),last:n.subText(i,"last"),max:n.subText(i,"max")}})},{"./util":52,jxt:77}],45:[function(t,e,n){t("underscore");var r=t("jxt"),i=t("./util"),o=t("./streamFeatures"),a="urn:ietf:params:xml:ns:xmpp-sasl",s=["aborted","account-disabled","credentials-expired","encryption-required","incorrect-encoding","invalid-authzid","invalid-mechanism","malformed-request","mechanism-too-weak","not-authorized","temporary-auth-failure"];n.Mechanisms=r.define({name:"sasl",namespace:a,element:"mechanisms",fields:{mechanisms:r.multiSubText(a,"mechanism")}}),n.Auth=r.define({name:"saslAuth",eventName:"sasl:auth",namespace:a,element:"auth",topLevel:!0,fields:{value:i.b64Text(),mechanism:r.attribute("mechanism")}}),n.Challenge=r.define({name:"saslChallenge",eventName:"sasl:challenge",namespace:a,element:"challenge",topLevel:!0,fields:{value:i.b64Text()}}),n.Response=r.define({name:"saslResponse",eventName:"sasl:response",namespace:a,element:"response",topLevel:!0,fields:{value:i.b64Text()}}),n.Abort=r.define({name:"saslAbort",eventName:"sasl:abort",namespace:a,element:"abort",topLevel:!0}),n.Success=r.define({name:"saslSuccess",eventName:"sasl:success",namespace:a,element:"success",topLevel:!0,fields:{value:i.b64Text()}}),n.Failure=r.define({name:"saslFailure",eventName:"sasl:failure",namespace:a,element:"failure",topLevel:!0,fields:{lang:{get:function(){return this._lang||""},set:function(t){this._lang=t}},condition:{get:function(){var t=this,e=[];return s.forEach(function(n){var i=r.find(t.xml,a,n);i.length&&e.push(i[0].tagName)}),e[0]||""},set:function(t){var e=this;if(this._CONDITIONS.forEach(function(t){var n=r.find(e.xml,a,t);n.length&&e.xml.removeChild(n[0])}),t){var n=r.createElementNS(a,t);n.setAttribute("xmlns",a),this.xml.appendChild(n)}}},$text:{get:function(){return r.getSubLangText(this.xml,a,"text",this.lang)}},text:{get:function(){var t=this.$text;return t[this.lang]||""},set:function(t){r.setSubLangText(this.xml,a,"text",t,this.lang)}}}}),r.extend(o,n.Mechanisms)},{"./streamFeatures":50,"./util":52,jxt:77,underscore:96}],46:[function(t,e){var n=t("jxt"),r=t("./iq"),i=t("./streamFeatures"),o=e.exports=n.define({name:"session",namespace:"urn:ietf:params:xml:ns:xmpp-session",element:"session"});n.extend(i,o),n.extend(r,o)},{"./iq":35,"./streamFeatures":50,jxt:77}],47:[function(t,e,n){var r=t("jxt"),i=t("./util"),o=t("./streamFeatures"),a="urn:xmpp:sm:3";n.SMFeature=r.define({name:"streamManagement",namespace:a,element:"sm"}),n.Enable=r.define({name:"smEnable",eventName:"stream:management:enable",namespace:a,element:"enable",topLevel:!0,fields:{resume:r.boolAttribute("resume")}}),n.Enabled=r.define({name:"smEnabled",eventName:"stream:management:enabled",namespace:a,element:"enabled",topLevel:!0,fields:{id:r.attribute("id"),resume:r.boolAttribute("resume")}}),n.Resume=r.define({name:"smResume",eventName:"stream:management:resume",namespace:a,element:"resume",topLevel:!0,fields:{h:i.numberAttribute("h","0"),previd:r.attribute("previd")}}),n.Resumed=r.define({name:"smResumed",eventName:"stream:management:resumed",namespace:a,element:"resumed",topLevel:!0,fields:{h:i.numberAttribute("h","0"),previd:r.attribute("previd")}}),n.Failed=r.define({name:"smFailed",eventName:"stream:management:failed",namespace:a,element:"failed",topLevel:!0}),n.Ack=r.define({name:"smAck",eventName:"stream:management:ack",namespace:a,element:"a",topLevel:!0,fields:{h:i.numberAttribute("h","0")}}),n.Request=r.define({name:"smRequest",eventName:"stream:management:request",namespace:a,element:"r",topLevel:!0}),r.extend(o,n.SMFeature)},{"./streamFeatures":50,"./util":52,jxt:77}],48:[function(t,e){var n=t("jxt"),r=t("./util");e.exports=n.define({name:"stream",namespace:"http://etherx.jabber.org/streams",element:"stream",fields:{lang:{get:function(){return this.xml.getAttributeNS(n.XML_NS,"lang")||""},set:function(t){this.xml.setAttributeNS(n.XML_NS,"lang",t)}},id:n.attribute("id"),version:n.attribute("version","1.0"),to:r.jidAttribute("to"),from:r.jidAttribute("from")}})},{"./util":52,jxt:77}],49:[function(t,e){t("underscore");var n=t("jxt"),r="urn:ietf:params:xml:ns:xmpp-streams",i=["bad-format","bad-namespace-prefix","conflict","connection-timeout","host-gone","host-unknown","improper-addressing","internal-server-error","invalid-from","invalid-namespace","invalid-xml","not-authorized","not-well-formed","policy-violation","remote-connection-failed","reset","resource-constraint","restricted-xml","see-other-host","system-shutdown","undefined-condition","unsupported-encoding","unsupported-feature","unsupported-stanza-type","unsupported-version"];e.exports=n.define({name:"streamError",namespace:"http://etherx.jabber.org/streams",element:"error",topLevel:!0,fields:{lang:{get:function(){return this._lang||""},set:function(t){this._lang=t}},condition:{get:function(){var t=this,e=[];return i.forEach(function(i){var o=n.find(t.xml,r,i);o.length&&e.push(o[0].tagName)}),e[0]||""},set:function(t){var e=this;if(this._CONDITIONS.forEach(function(t){var i=n.find(e.xml,r,t);i.length&&e.xml.removeChild(i[0])}),t){var i=n.createElementNS(r,t);i.setAttribute("xmlns",r),this.xml.appendChild(i)}}},seeOtherHost:{get:function(){return n.getSubText(this.xml,r,"see-other-host")},set:function(t){this.condition="see-other-host",n.setSubText(this.xml,r,"see-other-host",t)}},$text:{get:function(){return n.getSubLangText(this.xml,r,"text",this.lang)}},text:{get:function(){var t=this.$text;return t[this.lang]||""},set:function(t){n.setSubLangText(this.xml,r,"text",t,this.lang)}}}})},{jxt:77,underscore:96}],50:[function(t,e){var n=t("jxt"),r=e.exports=n.define({name:"streamFeatures",namespace:"http://etherx.jabber.org/streams",element:"features",topLevel:!0,fields:{features:{get:function(){return this._extensions}}}}),i=n.define({name:"rosterVersioning",namespace:"urn:xmpp:features:rosterver",element:"ver"}),o=n.define({name:"subscriptionPreApproval",namespace:"urn:xmpp:features:pre-approval",element:"sub"});n.extend(r,i),n.extend(r,o)},{jxt:77}],51:[function(t,e){var n=t("jxt"),r=t("./util"),i=t("./iq"),o=e.exports=n.define({name:"time",namespace:"urn:xmpp:time",element:"time",fields:{utc:r.dateSub("urn:xmpp:time","utc"),tzo:{get:function(){var t,e,r,i=-1,o=n.getSubText(this.xml,this._NS,"tzo");return o?("-"===o.charAt(0)&&(i=1,o=o.slice(1)),t=o.split(":"),e=parseInt(t[0],10),r=parseInt(t[1],10),(60*e+r)*i):0},set:function(t){var e,r,i="-";"number"==typeof t?(0>t&&(t=-t,i="+"),e=t/60,r=t%60,i+=(10>e?"0":"")+e+":"+(10>r?"0":"")+r):i=t,n.setSubText(this.xml,this._NS,"tzo",i)}}}});n.extend(i,o)},{"./iq":35,"./util":52,jxt:77}],52:[function(t,e,n){var r=t("jxt"),i=t("../jid"),o="http://www.w3.org/XML/1998/namespace";n.langAttribute=r.field(function(t){return t.getAttributeNS(o,"lang")||""},function(t,e){t.setAttributeNS(o,"lang",e)}),n.jidAttribute=r.field(function(t,e){return new i(r.getAttribute(t,e))},function(t,e,n){r.setAttribute(t,e,(n||"").toString())}),n.jidSub=r.field(function(t,e,n){return new i(r.getSubText(t,e,n))},function(t,e,n,i){r.setSubText(t,e,n,(i||"").toString())}),n.b64Text=r.field(function(t){return t.textContent&&"="!=t.textContent?atob(t.textContent):""},function(t,e){t.textContent=btoa(e)||"="}),n.dateAttribute=r.field(function(t,e){return new Date(r.getAttribute(t,e))||Date.now()},function(t,e,n){n&&r.setAttribute(t,e,n.toISOString())}),n.dateSub=r.field(function(t,e,n){return new Date(r.getSubText(t,e,n))||Date.now()},function(t,e,n,i){i&&r.setSubText(t,e,n,i.toISOString())}),n.numberAttribute=r.field(function(t,e,n){return parseInt(r.getAttribute(t,e,n),10)},function(t,e,n){r.setAttribute(t,e,n.toString())}),n.numberSub=r.field(function(t,e,n,i){return parseInt(r.getSubText(t,e,n,i),10)},function(t,e,n,i){r.setSubText(t,e,n,i.toString())})},{"../jid":3,jxt:77}],53:[function(t,e){var n=t("jxt"),r=t("./iq"),i="jabber:iq:version",o=e.exports=n.define({name:"version",namespace:i,element:"query",fields:{name:n.subText(i,"name"),version:n.subText(i,"version"),os:n.subText(i,"os")}});n.extend(r,o)},{"./iq":35,jxt:77}],54:[function(t){var e=t("jxt"),n=t("./iq");e.add(n,"visible",e.boolSub("urn:xmpp:invisible:0","visible")),e.add(n,"invisible",e.boolSub("urn:xmpp:invisible:0","invisible"))},{"./iq":35,jxt:77}],55:[function(t,e){function n(){function t(t){var e=[n.streamStart,t,n.streamEnd].join("");return e}function e(t){for(var e=n.parser.parseFromString(t,"application/xml").childNodes,r=0;r<e.length;r++)if(1===e[r].nodeType)return e[r]}var n=this;i.call(this),n.sm=new s(n),n.sendQueue=o.queue(function(t,e){n.conn&&(n.emit("raw:outgoing",t),n.sm.track(t),"string"!=typeof t&&(t=t.toString()),n.conn.send(t)),e()},1),n.on("connected",function(){n.send(["<stream:stream",'xmlns:stream="http://etherx.jabber.org/streams"','xmlns="jabber:client"','version="'+(n.config.version||"1.0")+'"','xml:lang="'+(n.config.lang||"en")+'"','to="'+n.config.server+'">'].join(" "))}),n.on("raw:incoming",function(i){var o,s;if(i=i.trim(),i=i.replace(/^(\s*<\?.*\?>\s*)*/,""),""!==i){if(i.match(n.streamEnd))return n.disconnect();if(n.hasStream)try{o=new a({},e(t(i)))}catch(u){return n.disconnect()}else{var c=i.match(/^<(\S+:)?(\S+) /);n.streamStart=i,n.streamEnd="</"+(c[1]||"")+c[2]+">",s=!1;try{o=new a({},e(i+n.streamEnd))}catch(u){try{o=new a({},e(i)),s=!0}catch(f){return n.disconnect()}}n.hasStream=!0,n.stream=o,n.emit("stream:start",o)}r.each(o._extensions,function(t){t.lang||(t.lang=n.stream.lang),("message"===t._name||"presence"===t._name||"iq"===t._name)&&(n.sm.handle(t),n.emit("stanza",t)),n.emit(t._eventname||t._name,t),n.emit("stream:data",t),t.id&&n.emit("id:"+t.id,t)}),s&&n.emit("stream:end")}})}var r=t("underscore"),i=t("wildemitter"),o=t("async"),a=t("./stanza/stream");t("./stanza/message"),t("./stanza/presence"),t("./stanza/iq");var s=t("./sm");t("node-uuid"),n.prototype=Object.create(i.prototype,{constructor:{value:n}}),n.prototype.connect=function(t){var e=this;e.config=t,e.hasStream=!1,e.streamStart='<stream:stream xmlns:stream="http://etherx.jabber.org/streams">',e.streamEnd="</stream:stream>",e.parser=new DOMParser,e.serializer=new XMLSerializer,e.conn=new WebSocket(t.wsURL,"xmpp"),e.conn.onerror=function(t){return 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diff --git a/clientapp/models/contact.js b/clientapp/models/contact.js
index 6ee69d7..f7167f5 100644
--- a/clientapp/models/contact.js
+++ b/clientapp/models/contact.js
@@ -201,7 +201,7 @@ module.exports = HumanModel.define({
                 results.forEach(function (result) {
                     result = result.toJSON();
                     var msg = result.mam.forwarded.message;
-                    
+
                     if (!msg.id) {
                         msg.id = uuid.v4();
                     }
@@ -221,6 +221,7 @@ module.exports = HumanModel.define({
 
                     var message = new Message(msg);
                     message.archivedId = result.mam.id;
+                    message.acked = true;
 
                     self.addMessage(message, false);
                 });
diff --git a/clientapp/models/message.js b/clientapp/models/message.js
index 560edcc..70944c3 100644
--- a/clientapp/models/message.js
+++ b/clientapp/models/message.js
@@ -45,6 +45,7 @@ module.exports = HumanModel.define({
             deps: ['created'],
             fn: function () {
                 if (this.created) {
+                    console.log(this.created);
                     var month = this.created.getMonth();
                     var day = this.created.getDate();
                     var hour = this.created.getHours();
@@ -59,6 +60,12 @@ module.exports = HumanModel.define({
                 }
                 return undefined;
             }
+        },
+        pending: {
+            deps: ['acked'],
+            fn: function () {
+                return !this.acked;
+            }
         }
     },
     session: {
@@ -71,7 +78,7 @@ module.exports = HumanModel.define({
         if (this.from.full !== msg.from.full) return false;
 
         delete msg.id;
-        
+
         this.set(msg);
         this._created = Date.now();
         this.edited = true;
diff --git a/clientapp/models/messages.js b/clientapp/models/messages.js
index 8975916..3ebac12 100644
--- a/clientapp/models/messages.js
+++ b/clientapp/models/messages.js
@@ -6,14 +6,5 @@ var Message = require('./message');
 
 module.exports = BaseCollection.extend({
     type: 'messages',
-    model: Message,
-    comparator: function (msg1, msg2) {
-        if (msg1.created < msg2.created) {
-            return -1;
-        }
-        if (msg1.created > msg2.created) {
-            return 1;
-        }
-        return 0;
-    }
+    model: Message
 });
diff --git a/clientapp/views/message.js b/clientapp/views/message.js
index 46d9f66..1fc0a87 100644
--- a/clientapp/views/message.js
+++ b/clientapp/views/message.js
@@ -14,7 +14,7 @@ module.exports = HumanView.extend({
     classBindings: {
         mine: '.message',
         receiptReceived: '.message',
-        acked: '.message',
+        pending: '.message',
         delayed: '.message',
         edited: '.message'
     },
diff --git a/public/css/app/chat.styl b/public/css/app/chat.styl
index d6680c7..b90d1f7 100644
--- a/public/css/app/chat.styl
+++ b/public/css/app/chat.styl
@@ -108,6 +108,9 @@
       .timestamp:before
         content: 'edited '
 
+    &.pending
+      background-color: red
+
     .body
       display: inline
       word-break: break-word
diff --git a/public/css/otalk.css b/public/css/otalk.css
index 2acdba5..39832a3 100644
--- a/public/css/otalk.css
+++ b/public/css/otalk.css
@@ -723,6 +723,9 @@ h4 {
 .messages .message.edited .timestamp:before {
   content: 'edited ';
 }
+.messages .message.pending {
+  background-color: #f00;
+}
 .messages .message .body {
   display: inline;
   word-break: break-word;