Closed ghost closed 7 years ago
More complete output for the problem:
fsch@leopold: /[...]/moscatest$ sudo lsof -n -i :1883
fsch@leopold: /[...]/moscatest$ sudo netstat -nlp | grep :1883
fsch@leopold: /[...]/moscatest$ sudo ss -lptn 'sport = :1883'
State Recv-Q Send-Q Local Address:Port Peer Address:Port
fsch@leopold: /[...]/moscatest$ cat index.js
var http = require('http')
, httpServ = http.createServer()
, mosca = require('mosca')
, mqttServ = new mosca.Server({});
mqttServ.attachHttpServer(httpServ);
httpServ.listen(3000);
var ascoltatore = {
//using ascoltatore
type: 'mongo',
url: 'mongodb://localhost:27017/mqtt',
pubsubCollection: 'ascoltatori',
mongo: {}
};
var moscaSettings = {
port: 1883,
backend: ascoltatore,
persistence: {
factory: mosca.persistence.Mongo,
url: 'mongodb://localhost:27017/mqtt'
}
};
var server = new mosca.Server(moscaSettings);
server.on('ready', setup);
server.on('clientConnected', function(client) {
console.log('client connected', client.id);
});
// fired when a message is received
server.on('published', function(packet, client) {
console.log('Published', packet.payload);
});
// fired when the mqtt server is ready
function setup() {
console.log('Mosca server is up and running')
}
fsch@leopold: /[...]/moscatest$ node index.js
events.js:141
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE :::1883
at Object.exports._errnoException (util.js:870:11)
at exports._exceptionWithHostPort (util.js:893:20)
at Server._listen2 (net.js:1237:14)
at listen (net.js:1273:10)
at net.js:1382:9
at nextTickCallbackWith3Args (node.js:452:9)
at process._tickCallback (node.js:358:17)
Tiny bit more info: it works fine on port 1884.
@fschwarzer there is something else listening in port 1883, usually RabbitMQ or Mosquitto
It may be because the address you are trying to bind the server to is in use. Try another port or close the program using that port.
If I run the example code from the website locally, I get the error
Error: listen EADDRINUSE :::1883
butsudo ss -lptn 'sport = :1883'
does not show anything on that port.The code I use comes from https://github.com/mcollina/mosca/wiki/Mosca-basic-usage#lets-put-it-all-together-now
Any idea?