WebSocket Error: Network Error 12031, The connection with the server was reset
I want to subscribe for mqtt message from UI. I am using the following code. I have mosquitto broker running on my machine, so I have given the url as my IP and it is listening on port number 1883, I have given some random Client ID
<!DOCTYPE html>
<html lang="en">
<head></head>
<body>
<script src="../bower_components/jquery/dist/jquery.min.js"></script>
<script src="../bower_components/jquery/dist/jquery.js"></script>
<script src="../paho.javascript-1.0.1/mqttws31-min.js"></script>
<script src="../paho.javascript-1.0.1/mqttws31.js"></script>
<script src="../js/browserMqtt.js"></script>
<script>
// Create a client instance
client = new Paho.MQTT.Client("10.9.177.110", 1883, "100");
// set callback handlers
client.onConnectionLost = onConnectionLost;
client.onMessageArrived = onMessageArrived;
// connect the client
client.connect({onSuccess:onConnect});
// called when the client connects
function onConnect() {
console.log("onConnect");
client.subscribe("/World");
message = new Paho.MQTT.Message("Hello");
message.destinationName = "/World";
client.send(message);
}
// called when the client loses its connection
function onConnectionLost(responseObject) {
if (responseObject.errorCode !== 0) {
console.log("onConnectionLost:"+responseObject.errorMessage);
}
}
// called when a message arrives
function onMessageArrived(message) {
console.log("onMessageArrived:"+message.payloadString);
}
</script>
</body>
</html>
What type of broker are you trying to connect to? Apart from the IBM MessageSight appliance I'm not aware of any other brokers that can share the same port for both native MQTT and MQTT over Websockets.
Since port 1883 is traditionally used for native MQTT have you remembered to add a new listener for MQTT over Websockets?
Assuming you are using mosquitto 1.4.x then you need to add something like this to your config file:
listerner 1884
protocol websockets
This will add a Websocket listener on port 1884
Can you confirm that you are running a version of Mosquitto with WebSockets enabled?
Related
so I've been trying to create a simple web page with Apache made with bootstrap from where I can send/receive publication with Mosquitto.
My issue here is that when I try to connect to the mqtt client i get this errors, i tried every combination that i found looking on guides and other stuff i founded, i either get ERR_CONNECTION_REFUSED or Error 404 or CONNECTION_RESET.
WebSocket connection to 'ws://localhost:9001/mqtt' failed: Error in
connection establishment: net::ERR_CONNECTION_REFUSED
I tried looking up ways to fix this, so I added in /etc/mosquitto/mosquitto.conf:
#listener 8081
#protocol websockets
#listener 8080
#protocol websockets
#port 9001
listener 9001
protocol websockets
My index.php file (at some point i just kept adding stuff):
<head >
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="utf-8">
<!-- MQTT Websocket -->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.2/mqttws31.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.min.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
var mqtt;
var reconnectTimeout = 2000;
var host = 'localhost';
var port = 9001;
function onConnect() {
message = new Paho.MQTT.Message("Test");
message.destinationName = 'test';
mqtt.send(message);
}
function onFail() {
console.log("fail")
}
function MQTTconnect() {
mqtt = new Paho.MQTT.Client(host, port, '/mqtt', "mark");
var options = {
cleanSession: true,
useSSL: false,
timeout: 3,
onSuccess: onConnect,
onFailure: onFail,
};
mqtt.connect(options);
}
</script>
If anyone could kindly tell me if i missed something or what i have to do to make the connection work I'd gladly appreciate! I've been stuck like this for hours now.
EDIT :
I think I found the issue i think I just had to type on a terminal
sudo mosquitto -c /etc/mosquitto/mosquitto.conf
and leave it open to make it work.
i have a device that send data strings via mqtt to my mosquitto broker on ubuntu i currently use node-red to then receive these strings and use javascript function node to do everything else i need, data conversions, insert into query etc but that one thing im struggling with is i want to move away from node-red so i just have files with pure code, i have tried the code provided on npm website but i need an idiots guide haha does anyone have any idea's where i can look or anyone able to help me ? all my html files are currently displayed from an apache server
my current set up for mqtt is mosquito running on ubuntu i have enabled websockets in the configuration files with listner of 1883
mosquitto configuration
listener 1883
listener 1884
protocol websockets
pid_file /var/run/mosquitto.pid
persistence true
persistence_location /var/lib/mosquitto/
log_dest file /var/log/mosquitto/mosquitto.log
include_dir /etc/mosquitto/conf.d
mqtt code i have tried :
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/paho-mqtt/1.0.1/mqttws31.js" type="text/javascript"></script> <script type="text/javascript">
var wsbroker = "localhost"; //mqtt websocket enabled broker
var wsport = 1883 // port for above
var client = new Paho.MQTT.Client(wsbroker, wsport,
"myclientid_" + parseInt(Math.random() * 100, 10));
client.onConnectionLost = function (responseObject) {
console.log("connection lost: " + responseObject.errorMessage);
};
client.onMessageArrived = function (message) {
console.log(message.destinationName, ' -- ', message.payloadString);
};
var options = {
timeout: 3,
onSuccess: function () {
console.log("mqtt connected");
client.subscribe('/tracked', {qos: 1});
},
onFailure: function (message) {
console.log("Connection failed: " + message.errorMessage);
}
};
function init() {
client.connect(options);
}
</head>
<body onload="init();">
</body>
So as mentioned in the comments.
You are trying to connect to port 1883 which is the native MQTT port.
To use the Javascript client from a webpage you need to use MQTT over Websockets, you have added a Websocket listener on port 1884.
So you need to edit the code as follows:
var wsbroker = "localhost"; //mqtt websocket enabled broker
var wsport = 1884 // Websocket port for above
var client = new Paho.MQTT.Client(wsbroker, wsport,
"myclientid_" + parseInt(Math.random() * 100, 10));
I am trying to create a simple program to send a message to a socket in plain text. The sender is a webpage in javascript using websocket and the server is a C program. I don't have any control over the C code but I have been assured by the codes owners that I can use simple javascript to send the message. My code is as follows:
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
//initialize the websocket ws
var ws;
//Open the socket connection
function openSock() {
//test for Websocket compatibility in the browser
if ("WebSocket" in window) {
// log socket attempt
console.log("Attempting to open socket!");
//open web socket ws
ws = new WebSocket("ws://192.168.6.222:11000/echo");
} else { // else the browser doesn't support WebSocket
//Websocket is not supported
alert("APS NOT supported by your Browser!");
}
}
//send the command to socket ws
function sendCommand() {
console.log("Attempting to Send Message");
ws.send("your message here");
}
//close the socket ws
function closeSock() {
console.log("Closing Socket");
// close socket ws
ws.close();
}
</script>
</head>
<body>
<div id="sse">
<input type=submit value="open">
<input type=submit value="send">
<input type=submit value="close">
</div>
</body>
</html>
When I click the connect button I get this error:
WebSocket connection to 'ws://192.168.6.222:11000/echo' failed: Error during WebSocket handshake: net::ERR_CONNECTION_RESET
I have checked the firewall and the port seems to be open. After spending a fair amount of time troubleshooting the server (making sure it is running and on the network, etc.) I am wondering if I did something wrong with this client side code.
From my limited knowledge and the reading I have done this looks correct but any help is welcome.
This is probably super late but I just ran into a similar problem while using Django channels. I fixed it by adding a slash (/) at the end of the URL.
ws = new WebSocket("ws://192.168.6.222:11000/echo/");
How does the server side of the connection look like?
Maybe you are using a faulty WebSocket Lib which does not provide a valid handshake.
Because when testing the client against ws://echo.websocket.org everything seems to work perfectly fine. This strongly suggests that the websocket client is not source of the problem.
Make sure that your queue is running properly, in my case that was the issue
I`m using laravel Event broadcasting , socket.io , node.js , and redis to pass notifications to the client side in real time.
The code is fairly simple, when i make a get request to '/' on the server an event will be fired and some data will be broadcast to all browsers(client side) which listening to this event on a channel(test-Channel).
The Routes.php content:
Route::get('/', 'uses' => function () {
Event::fire( new App\Events\UserHasRegistered('DummyData') );
return view('test');
}]);
The UserHasRegistered Event class :
class UserHasRegistered extends Event implements ShouldBroadcast{
use SerializesModels;
public $name;
/**
* Create a new event instance.
*
* #return void
*/
public function __construct($name){
$this->name = $name;
}
/**
* Get the channels the event should be broadcast on.
*
* #return array
*/
public function broadcastOn(){
return ['test-channel'];
}
}
The node Server file content :
/*General Configurations :
- Setting up the node Server
- Server side Socket.io
- node js Redis Client
- instance of ioredis
*/
var server = require('http').Server();
var io = require('socket.io')(server);
var Redis = require('ioredis');
var redis = new Redis();
/*listen to a channel , and when a Message Arrives we send it to All Listening clients via socket.io*/
redis.subscribe('test-channel');
redis.on('message' , function(channel , message){
message = JSON.parse(message);
// The Client Side Channel naming conversion => channelName:EventPublishedToServer => testChannel:UserHasRegistered
io.emit(channel + ':' + message.event , message.data );
});
/*Booting Up the Server : port 3000 */
server.listen(3000 , function(){
console.log('The Server Is Running');
});
Every thing is working fine and the data is passed to the the node server through redis but on the client side where i use socket.io to listen to a specific channel , i get this weird error
GET http://192.168.10.10:3000/socket.io/?EIO=3&transport=polling&t=1446018378941-633 net::ERR_CONNECTION_REFUSED
The Client side :
<script type="text/javascript" src="/js/socket.io.js"></script>
<script>
/*Homestead IP Address , Port:3000 Node Server Port*/
var socket = io('http://192.168.10.10:3000');
/*When Data is sent to client side*/
socket.on('test-channel:App\\Events\\UserHasRegistered' , function(data){
console.log(data);
//$('ul').append('<li><h5>'+ data.name +'</h5></li>');
});
</script>
I`m Using Windows 10 and Homestead virtual box.
any Help ?
i had this same issue and i solved it opening port 3000 in VirtualBox. For that, you should go into homestead settings inside adn then Network->Port Forwarding and there put 3000 on both ports.
did you try to ssh by "vagrant ssh" to your virtual machine and start your server-file from there? A had the same problem while i was starting my server file from windows- or git-command
Did you try
<script type="text/javascript" src="/js/socket.io.js"></script>
<script>
/*Homestead IP Address , Port:3000 Node Server Port*/
var socket = io.connect('http://192.168.10.10:3000');
/*When Data is sent to client side*/
socket.on('test-channel:App\\Events\\UserHasRegistered' , function(data){
console.log(data);
//$('ul').append('<li><h5>'+ data.name +'</h5></li>');
});
</script>
I am working on a node.js application that will connect to a UNIX socket (on a Linux machine) and facilitate communication between a web page and that socket. So far, I have been able to create socket and communicate back and forth with this code in my main app.js:
var net = require('net');
var fs = require('fs');
var socketPath = '/tmp/mysocket';
fs.stat(socketPath, function(err) {
if (!err) fs.unlinkSync(socketPath);
var unixServer = net.createServer(function(localSerialConnection) {
localSerialConnection.on('data', function(data) {
// data is a buffer from the socket
});
// write to socket with localSerialConnection.write()
});
unixServer.listen(socketPath);
});
This code causes node.js to create a UNIX socket at /tmp/mysocket and I am getting good communication by testing with nc -U /tmp/mysocket on the command line. However...
I want to establish a connection to an already existing UNIX socket from my node.js application. With my current code, if I create a socket from the command line (nc -Ul /tmp/mysocket), then run my node.js application, there is no communication between the socket and my application (The 'connect' event is not fired from node.js server object).
Any tips on how to go about accomplishing this? My experiments with node.js function net.createSocket instead of net.createServer have so far failed and I'm not sure if that's even the right track.
The method you're looking for is net.createConnection(path):
var client = net.createConnection("/tmp/mysocket");
client.on("connect", function() {
... do something when you connect ...
});
client.on("data", function(data) {
... do stuff with the data ...
});
I was just trying to get this to work with Linux's abstract sockets and found them to be incompatible with node's net library. Instead, the following code can be used with the abstract-socket library:
const abstract_socket = require('abstract-socket');
let client = abstract_socket.connect('\0my_abstract_socket');
client.on("connect", function() {
... do something when you connect ...
});
client.on("data", function(data) {
... do stuff with the data ...
});
You can also connect to a socket like this:
http://unix:/path/to/my.sock: