pusher authentication socket id undefined

Question

I'm trying to create a private channel to allow users to send data to my node.js server. The request is failing, and returning a pusher:subscription_error with an error code of 500.

My node.js (server side) log cannot pull the socket_id from the incoming request to '/pusher/auth'

app.post( '/pusher/auth', function( req, res ) {
  var socketId = req.body.socket_id;//<--DEBUG: TypeError: Cannot read property 'socket_id' of undefined

  var channel = req.body.channel_name;
  var presenceData = {
    user_id: 'unique_user_id',
    user_info: {
      name: 'Mr Pusher',
      twitter_id: '@pusher'
    }
  };
  var auth = pusher.auth( socketId, channel, presenceData );
  res.send( auth );
} );

Here is the client side which sends the request:

   // Create new Pusher instance and connect
        var key = "<%= appKey %>"  
        var id = "<%= appKey %>"  
        var secret = "<%= appSecret %>"  
        var pusher = new Pusher( "<%= appKey %>" );

// Subscribe to the channel that the event will be published on
var channel = pusher.subscribe( 'private-channel' );
    channel.bind('pusher:subscription_succeeded',function(){
            alert("subscription succeeded")
            var triggered = channel.trigger("client-event",{})
            alert("triggered "+triggered)
    })
    channel.bind('pusher:subscription_error',function(status){
            alert("subscription error "+status)//<-- This error gets returned
    })
// Bind to the event on the channel and handle the event when triggered
channel.bind( 'client-event', function( data ) {
  // For now, alert the message.
  alert( data.message );
} );

Should this be automatically handled by the pusher API, or do I need to explicitly send it? How can I send the socket_id to the server? How can I even access the socket_id variable on the client?

Answer 1

It sounds like you need to set up the bodyParser which will parse the request body and make request.body available.

See the Pusher docs: http://pusher.com/docs/authenticating_users#implementing_private_endpoints/lang=node