如何将实时数据从Node.js服务器推送到AngularJS？

Question

I have successfully opened a websocket connection in server to an external API to get exchange ticker data but not sure how to continuously push the data to client / AngularJS.

Here is the router code:

 router.get('/live-ticker', function(req, res) { var autobahn = require('autobahn'); var wsuri = "wss://api.poloniex.com"; var connection = new autobahn.Connection({ url: wsuri, realm: "realm1" }); connection.onopen = function(session) { function tickerEvent(args, kwargs) { res.json(args); console.log(args); } session.subscribe('ticker', tickerEvent); } connection.onclose = function() { console.log("Websocket connection closed"); } connection.open(); }); 

What I'm attemping to do is to have the data from tickerEvent live update the controller in the front end:

 app.controller('liveTickerController', function($scope, $http) { $scope.ticker = []; var request = $http.get('/live-ticker'); request.success(function(ticker) { console.log(ticker); //only logging data once $scope.liveTicker = ticker; }); request.error(function(err) { console.log('Error: ' + err); }); }); 

How would get live updates pushed to client?

Thank you

Answer 1

you need to push data from the server periodically.

to get these "live updates" on the client side, a plain ajax call is not enough, you need a realtime communication.

You should use websoket even here, with socket.io and angular socket.io for example you can handle this communication easily