-
Notifications
You must be signed in to change notification settings - Fork 6
/
example.js
45 lines (38 loc) · 1.34 KB
/
example.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
* Copyright 2021 HiveMQ GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const mqtt = require('mqtt');
// your credentials
const options = {
username: '<your_username>',
password: '<your_password>',
};
// connect to your cluster, insert your host name and port
const client = mqtt.connect('tls://your_host:port', options);
// prints a received message
client.on('message', function(topic, message) {
console.log(String.fromCharCode.apply(null, message)); // need to convert the byte array to string
});
// reassurance that the connection worked
client.on('connect', () => {
console.log('Connected!');
});
// prints an error message
client.on('error', (error) => {
console.log('Error:', error);
});
// subscribe and publish to the same topic
client.subscribe('messages');
client.publish('messages', 'Hello, this message was received!');