UnitySocketIO sending a websocket message to nodejs

Just wondering if anyone has used the UnitySocketIO to chat between unity and node.js.

I want to send a message but the documentation is lacking and everyone has a different way of doing it without explaining key aspects to setting it up.

In Unity(C#) i set it up like this:

 using UnityEngine;
 using System.Collections;
 using SocketIOClient;
 
 public class Gui : MonoBehaviour {
 
     void OnGUI () {
         // Make a background box
         GUI.Box(new Rect(10,10,100,90), "Loader Menu");
 
         // Make the first button. If it is pressed, Application.Loadlevel (1) will be executed
         if(GUI.Button(new Rect(20,40,80,20), "Level 1")) 
         {
             Debug.Log("Button 1");
         }
         // Make the second button.
         if(GUI.Button(new Rect(20,70,80,20), "Socket test")) 
         {
             string socketUrl = "http://127.0.0.1:8001";
             Debug.Log("socket url: " + socketUrl);
             Client client = new Client(socketUrl);
             client.Send("Hello world");
         }
     }
 }

My node server is set up like this to recieve the message:

 io.sockets.on("connect", function(socket)
 {
     socket.on("Hey", function(data)
     {
         console.log(data);
     });
 });

Im not sure how it works I tried to iplement the "Hey" into the send in unity as I would with any other client but it does not allow multiple parameters. Any insight would be great!!