使用NodeJS在Azure上使用Websocket

Question

I manage to make websocket work on a nodeJS+express application on azure.
However it is using polling instead of websocket, anyone know why is that?
Here are the config.

Client Side

socket = io.connect(url, {'transports':['websocket', 'polling']);

Server side

app.set('port', process.env.PORT || 3000);

var server = app.listen(app.get('port'), function() {
  console.info('Express server started');
});

var io = require('socket.io').listen(server, {'transports': ['websocket', 'polling']});

I am using socket.io 1.3.6

EDIT:

On Azure I have websocket and the Always On setting ON.
It's also not a the free package.

Answer 1

OK. I also have a socketIO app hosted on an azure website, and the web sockets does work as expected. Did you check this article out? Enabling Websockets for Socket.io Node apps on Microsoft Azure

Here's the important part:

Note that we say "webSocket enabled=false" in this web.config. This is confusing, but makes sense when you realize we're saying "disable Websockets in IIS and let node (or whomever) downstream handle it"

Answer 2

我最终将socket.io降级到1.3.5，以使Websockets在Azure（iisnode）上工作