Autobahn 0.9.5 (AMD) - Error during WebSocket handshake - websocket

I'm trying to implement autobahn 0.9.5 on my SPA project using DurandalJS.
var ab = require('autobahn');
live = new ab.Connection(
{
url: 'ws://localhost:8080',
realm: 'realm1'
});
live.onopen = function(session, details)
{
console.log('Autobahn open successfully!', session);
};
live.onclose = function(reason, details)
{
console.log('Autobahn connection lost', reason + ' - ' + details);
};
live.open();
i received an error on firefox and chrome browser
Firefox:
InvalidAccessError: A parameter or an operation is not supported by the underlying object
websocket.close(code, reason);
Chrome:
WebSocket connection to 'ws://localhost:8080/' failed: Error during WebSocket handshake: Sent non-empty 'Sec-WebSocket-Protocol' header but no response was received
I have no idea what happened..
BEFORE I STARTED WITH - autobahn 0.9.5
I have write simple test on test.html to see if everything setup in backend is correct.
But on this test i currently used autobahn 0.8.2
test.html
<script src="http://autobahn.s3.amazonaws.com/js/autobahn.min.js"></script>
<script>
var conn = new ab.Session(
// Websocket host
'ws://localhost:8080',
// Callback on connection established
function() {
// Once connect, subscribe to channel
conn.subscribe('3', function(topic, data) {
console.log(topic, data);
});
},
// Callback on connection close
function() {
console.warn('WebSocket connection closed');
},
// Additional AB parameters
{'skipSubprotocolCheck': true}
);
</script>
This test working perfectly as what i need, but after I try to implement it inside real project, I can't make autobahn 0.8.2 loaded using requireJS, It keep give me an error ab not defined.
I don't really understand what is happening, according of autobahn getting started, it should work.
and here is how I define it on main.js (requirejs paths and shim config)
requirejs.config({
paths: {
'autobahn' : 'https://autobahn.s3.amazonaws.com/autobahnjs/latest/autobahn.min',
'when' : 'https://cdnjs.cloudflare.com/ajax/libs/when/2.7.1/when'
},
shim: {
'autobahn': {
deps: ['when']
}
}
});
Hopefully somebody can help me, I really love to make it working !
Any help will be greatly appreciated!
Thanks

Probably late, but for further reference.
This is probably not a complete answer to SO question.
First of all, everything should be written either for AutobahnJS v0.8.2 (which supports WAMPv1) or for AutobahnJS v0.9.5 (WAMPv2).
Check API documentation.
WAMP v1
AutobahnJS v0.8.2 API - http://autobahn.ws/js/reference_wampv1.html
it loads from http://autobahn.s3.amazonaws.com/js/autobahn.js
global variable for autobahn is ab
connecting with var conn = new ab.Session(wuri, onOpenCallback, onCloseCallback, options);
WAMP v2
AutobahnJS v0.9.5 API - http://autobahn.ws/js/reference.html
it loads from https://autobahn.s3.amazonaws.com/autobahnjs/latest/autobahn.min.jgz
global variable for autobahn is autobahn
connecting with new autobahn.Connection({url: wuri, realm: yourRealm});

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Svelte/Sveltekit and socket.io-client not working in dev (works in preview)

I'm trying to make socket.io-client work in a svelte front end app to talk to an existing API server that already uses socket.io. After a number of challenges, I managed to make this work but I can only get this to work with sveltekit's preview and not in dev mode. Wondered if someone with some knowledge of those could explain why or suggest what I need to do to get it connecting in dev?
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at Request.<anonymous> (polling-xhr.js:93)
at Request.Emitter.emit (index.js:145)
at Request.onError (polling-xhr.js:242)
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Obviously having to rebuild and re-run preview mode on each code change makes development pretty painful, does anyone have insight as to what the issue is here or suggestions on how to proceed?
I've had a similar problem, I solved it by adding this code to svelte.config.js:
const config = {
kit: {
vite: {
resolve: {
alias: {
"xmlhttprequest-ssl": "./node_modules/engine.io-client/lib/xmlhttprequest.js",
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Can't connect to web socket from Electron when using self signed cert

I have an Electron app which tries to connect to a device over a web socket. The connection is encrypted (i.e. wss) but the SSL certificate is self signed and thus, untrusted.
Connecting inside Chrome is ok and it works. However inside Electron I run into problems. Without putting any certificate-error handlers on the BrowserWindow or on the app I receive the following error in the console output:
WebSocket connection to 'wss://some_ip:50443/' failed: Error in connection establishment: net::ERR_CERT_AUTHORITY_INVALID
Then shortly after:
User is closing WAMP connection.... unreachable
In my code, to make the connection I run the following.
const connection = new autobahn.Connection({
realm: 'some_realm',
url: 'wss://some_ip:50443'
});
connection.onopen = (session, details) => {
console.log('* User is opening WAMP connection....', session, details);
};
connection.onclose = (reason, details) => {
console.log('* User is closing WAMP connection....', reason, details);
return true;
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// alternatively, this also displays the same error
const socket = new WebSocket(`wss://some_ip:50443`);
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NOTE: Autobahn is a Websocket library for connecting using the WAMP protocol to a socket server of some sort. (in my case, the device) The underlying protocol is wss. Underneath the code above, a native JS new WebSocket() is being called. In other words:
As I mentioned, I've tested this code in the browser window and it works. I've also built a smaller application to try and isolate the issue. Still no luck.
I have tried adding the following code to my main.js process script:
app.commandLine.appendSwitch('ignore-certificate-errors');
and
win.webContents.on('certificate-error', (event, url, error, certificate, callback) => {
// On certificate error we disable default behaviour (stop loading the page)
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event.preventDefault();
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and
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My understanding is that the 'certificate-error' handlers above should escape any SSL certificate errors and allow the application to proceed. However, they're not.
I've also tried adding the following to main.js:
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nodeIntegration: true,
webSecurity: false
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});
process.env.ELECTRON_DISABLE_SECURITY_WARNINGS = '1';
process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';
With Election, how do I properly deal with a certificate from an untrusted authority? i.e. a self signed cert.
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I had the same problem , all i added was your line:
app.commandLine.appendSwitch('ignore-certificate-errors');
I use socket.io, but i think its the same principal.
I do however connect to the https protocol and not wss directly.
This is what my connection looks like on the page:
socket = io.connect(
'https://yoursocketserver:yourport', {
'socketpath',
secure: false,
transports: ['websocket']
});
That seems to have done the trick.
Thank you for the help :) i hope this answer helps you too.

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Please check
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What browsers support HTML5 WebSocket API?
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alert("Connected...");
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socket.emit('helloFromClient', {client: 'says hello'});
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In my client nodejs app I see:
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