HTML5 Websocket with AngularJS
It's really cool working with AngularJS and with HTML5 Websockets too!
So, how can I use them together?
With ngWebsocket, indeed!
ngWebsocket is a module created following the Angular-style syntax, very easy to import and use in your application.
Follow a brief tutorial, so all aboard, the Angular ship is ready to go!
Installation
You don't have to download a zip from a FTP server, not in 2014, dude.
For front-end libraries, use Bower: it saves time and it's funny, I swear!
So:
bower install ng-websocketThat's it =)
Import
At this point we have to setup our application to include ngWebsocket as a dependency, so let's change the index.html:
<html ng-app="MyAwesomeApp">
<head>
<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/ng-websocket/ng-websocket.js"></script>
</head>
</html>And then the app.js:
'use strict';
angular.module('MyAwesomeApp', ['ngWebsocket']);Now, you're ready to use it in your application!
Use it
ngWebsocket provides an Angular Provider and a Service.
Let's start with the Service:
angular.controller('MyCtrl', function ($websocket) {
var ws = $websocket.$new('ws://localhost:12345');
ws.$on('$open', function () {
ws.$emit('hello', 'world'); // it sends the event 'hello' with data 'world'
})
.$on('incoming event', function (message) { // it listents for 'incoming event'
console.log('something incoming from the server: ' + message);
});
});As you can see, it's really easy to use, just like working with Events!
No pain, just fun =)
Now, go and start using WebSocket in your application!
Written by Vincenzo Ferrari
Related protips
2 Responses
Hi,
Thanks for this code snippet. when i try using this code block , i am getting the below error.
var ws = $websocket.$new('ws://localhost:12345'); == $websocket.$new - undefined.
Can you please let us know how to resolve this?
'use strict';
angular.module('MyCoolWebApp', ['ngWebsocket'])
.run(function ($websocket) {
var ws = $websocket.$new('ws://localhost:12345'); // instance of ngWebsocket, handled by $websocket service
ws.$on('$open', function () {
console.log('Oh my gosh, websocket is really open! Fukken awesome!');
ws.$emit('ping', 'hi listening websocket server'); // send a message to the websocket server
var data = {
level: 1,
text: 'ngWebsocket rocks!',
array: ['one', 'two', 'three'],
nested: {
level: 2,
deeper: [{
hell: 'yeah'
}, {
so: 'good'
}]
}
};
ws.$emit('pong', data);
});
ws.$on('pong', function (data) {
console.log('The websocket server has sent the following data:');
console.log(data);
ws.$close();
});
ws.$on('$close', function () {
console.log('Noooooooooou, I want to have more fun with ngWebsocket, damn it!');
});
});Have a fresh tip? Share with Coderwall community!
