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web-page-monitor.htm
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<style>
#messages
{
background-color:yellow;
font-size:3;
font-weight:bold;
line-height:140%;
}
#status
{
background-color:red;
font-size:4;
font-weight:bold;
color:white;
line-height:140%;
}
table{
border: 1px solid black;
}
.out
{
background-color:gray;
}
</style>
<head>
<title>Simple Web Page Control Dashboard</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.js" type="text/javascript"></script>
<script type = "text/javascript"
src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type = "text/javascript">
var connected_flag=0
var mqtt;
var reconnectTimeout = 2000;
var host="n9ec61d1.us-east-1.emqx.cloud";
var port=8083;
var sub_topic="house/#";
function onConnectionLost(){
console.log("connection lost");
document.getElementById("status").innerHTML = "Connection Lost";
document.getElementById("messages").innerHTML ="Connection Lost";
connected_flag=0;
}
function onFailure(message) {
console.log("Failed");
document.getElementById("messages").innerHTML = "Connection Failed- Retrying";
setTimeout(MQTTconnect, reconnectTimeout);
}
function onMessageArrived(r_message){
out_msg="Message received "+r_message.payloadString+"<br>";
out_msg=out_msg+"Message received Topic "+r_message.destinationName;
//console.log("Message received ",r_message.payloadString);
console.log(out_msg);
document.getElementById("messages").innerHTML =out_msg;
var topic=r_message.destinationName;
if(topic=="house/outside-light")
{
document.getElementById("outside-light").innerHTML =r_message.payloadString;
}
if(topic=="house/outside-temperature")
{
document.getElementById("outside-temperature").innerHTML =r_message.payloadString;
}
}
function onConnected(recon,url){
console.log(" in onConnected " +reconn);
}
function onConnect() {
// Once a connection has been made, make a subscription and send a message.
document.getElementById("messages").innerHTML ="Connected to "+host +"on port "+port;
connected_flag=1
document.getElementById("status").innerHTML = "Connected";
console.log("on Connect "+connected_flag);
mqtt.subscribe(sub_topic);
}
function MQTTconnect() {
console.log("connecting to "+ host +" "+ port);
var x=Math.floor(Math.random() * 10000);
var cname="controlform-"+x;
mqtt = new Paho.MQTT.Client(host,port,cname);
//document.write("connecting to "+ host);
var options = {
timeout: 3,
onSuccess: onConnect,
onFailure: onFailure,
userName : "test",
password : "0114"
};
mqtt.onConnectionLost = onConnectionLost;
mqtt.onMessageArrived = onMessageArrived;
//mqtt.onConnected = onConnected;
mqtt.connect(options);
return false;
}
function sub_topics(){
document.getElementById("messages").innerHTML ="";
if (connected_flag==0){
out_msg="<b>Not Connected so can't subscribe</b>"
console.log(out_msg);
document.getElementById("messages").innerHTML = out_msg;
return false;
}
var stopic= document.forms["subs"]["Stopic"].value;
console.log("Subscribing to topic ="+stopic);
mqtt.subscribe(stopic);
return false;
}
function send_message(msg,topic){
if (connected_flag==0){
out_msg="<b>Not Connected so can't send</b>"
console.log(out_msg);
document.getElementById("messages").innerHTML = out_msg;
return false;
}
var value=msg.value;
console.log("value= "+value);
console.log("topic= "+topic);
message = new Paho.MQTT.Message(value);
message.destinationName = "house/"+topic;
mqtt.send(message);
return false;
}
</script>
</head>
<body onload="MQTTconnect()">
<h1>Simple Web Page Control Dashboard</h1>
<table>
<tr><td >Outside Temperature:</td><td><input id="outside-temp" type="text" name="outside-temp" onchange="send_message(this,'outside-temp')"></td></tr>
<!-- <tr><td >Outside Light:</td><td><input id="outside-light" type="text" name="outside-light" onchange="send_message(this,'outside-light')"></td></tr> -->
<tr><td >Outside Light:</td><td class="switch"><input type="range" min=0 max=1 value=0 class="slider" id="outside-light" onclick="send_message(this,'outside-light')")></td></tr>
</table>
<div id="status">Connection Status: Not Connected</div>
</div>
<hr>
Messages:<p id="messages"></p>
</body>
</html>