How to implement the acknowledgement callback? about elephant.io HOT 6 CLOSED

It seems that now callback in emit is ignored. Here is the source code
/**
* Emit an event
*
* @param string $event
* @param array $args
* @param string $endpoint
* @param function $callback - ignored for the time being
* @return ElephantIO\Client
* @todo work on callbacks
*/
public function emit($event, $args, $endpoint = null, $callback = null) {
return $this->send(self::TYPE_EVENT, null, $endpoint, json_encode(array(
'name' => $event,
'args' => $args,
)
));
}

from elephant.io.

you could maybe play a little bit with the events (implemented in #39) ? But i'm not sure how to fire these events though.

from elephant.io.

@Taluu the #39 nodejs server side socket.io on does not implement callback. if i modify #39 nodejs service side code like this:

var io = require('socket.io').listen(8000);
io.sockets.on('connection', function (socket) {
console.log('user connected');
socket.on('ping', function (data,callback) {
     console.log('Ping received with data: ' + data);
     // socket.emit('pong', '42');
     // callback(something);
     //`callback` will be undefined.
  });
});

The callback is not undefined. I hope my php client side implement the callback can be like this:

$elephant->emit('ping', $json, null,function($d) use(&$elephant){
 var_dump($d);  //callback the nodejs server side `on`  function
 $elephant->close();
});

What should I do please?

from elephant.io.

If I get this right, what you are trying to do is execute a php function in your node.js service, which is, AFAIK, not possible.

The callback in this case shoud, I think, be some javascript executable (a function name, a js callback, ...) for socket.io to call whenever it receives an event.

What you're trying to do is to call a callback when you're emitting... hence the solution pointing to #39 implementation. But it will need to work a little bit around that to achieve what you want, if that is what you want...

from elephant.io.

It seems to me he's not trying to execute php function in nodejs service. Instead he needs the callback of emit. And execute the php function in the callback. It's supported by the SocketIO protocol but not implemented in elephant.io anyhow. I had same issue when using .NET client. And is interested in how to do this in php, too. @Taluu Could you be more specific?

from elephant.io.

Closing, as this is an issue on 2.0, which is not maintained anymore

from elephant.io.