how to connect the mqtt server

[espruino-discuss]

Posted at 2017-09-28 by user81749

I use the mosca to run a mqtt server,and use the esp32 as a mqtt client ,but the client can not connect the server,the server and the client are in different network,so how can i set up the host ?var ssid="wangnuan";
var password="wang1234";
var wifi=require('Wifi');
var host='xxxxxxxx';

var options={
client_id : "random",
keep_alive: 60,
port: 1883,
clean_session: true,
username: "test",
password: "12345678",
protocol_name: "esp32",
protocol_level: 4,
};
wifi.connect(ssid, {password: password}, function() {
console.log('Connected to Wifi. IP address is:', wifi.getIP().ip);
console.log("Connected to access point");
var mqtt = require("MQTT").create(host);
mqtt.on("connected", function() {
console.log("MQTT connected");
mqtt.subscribe("test");
mqtt.on('publish', function (pub) {
console.log("topic: "+pub.topic);
console.log("message: "+pub.message);
});
});
console.log("Doing a connect");
mqtt.connect();
});