only digits in room name

build/app.js

 
 let content, remoteVideoEl;
 const store = window.store = new Store({
-	conference_id: 'LUCID-4',
+	conference_id: 'DDDD'.replace(/D/g, ()=>Math.random()*10|0), // LUCID
 	connection: false,
 	webcamtypes: [
 		{text: 'Center', value: 'Center', filter: 'OfficeUserLeft'},

build/view/CallScreen.js

@@ -280,7 +280,7 @@ Screen.Conference = function() {
 		D.div({cls: 'block hidden'},
 				D.div({cls: 'header'}, 'Conference info'),
 
-				LabeledInput({label: 'Session ID', cls: 'callapp_address input', autocomplete: 'off', value: 'LUCID-4'}, 'conference_id'),
+				LabeledInput({label: 'Session ID', cls: 'callapp_address input', autocomplete: 'off', value: 'DDDD'.replace(/D/g, ()=>Math.random()*10|0)}, 'conference_id'), // LUCID
 			),
 			D.div({cls: ['block', {hidden: true}]}, //Store.NOT(isConnected)
 				D.div({cls: ['header']}, 'Remote video'),