diff --git a/lib/vim-nb-protocol.js b/lib/vim-nb-protocol.js
index 9f92976..1bb5178 100644
--- a/lib/vim-nb-protocol.js
+++ b/lib/vim-nb-protocol.js
@@ -12,7 +12,7 @@ function VNBMessageTransform(opts) {
     Transform.call(this,opts);
 
     var buffer;
-
+    
     /**
      * Transform stream Write implementation
      * @param {string} data Upstream data already converted as string
@@ -64,7 +64,7 @@ function VNBMessageTransform(opts) {
  * VNB Client implementation (communication from vim to the netbeans server)
  * @constructor
  * @this {VNBMessageClient}
- * @param {net.Socket} socket Incomming stream
+ * @param {Socket} socket Incomming stream
  * @param {authenticationCallback} authentication Callback function called when the AUTH message is received
  */
 function VNBClient(socket, authentication) {
@@ -75,6 +75,7 @@ function VNBClient(socket, authentication) {
     var self = this;
     var callbacks = new Map();
     var currentSeqno = 0;
+    var connected = false;
 
     //TODO check if this is needed
     socket.setEncoding("utf8");
@@ -85,6 +86,8 @@ function VNBClient(socket, authentication) {
 
         //The first message must be an authentication one
         if (message.startsWith("AUTH ") && authentication(message.substring(message.indexOf(" ") + 1))) {
+            connected = true;
+            
             messageTransform.removeAllListeners("data");
             messageTransform.on("data", function(message) {
 
@@ -213,12 +216,13 @@ function VNBClient(socket, authentication) {
             });
         }
         else {
+            //TODO send a message to client ?
             socket.end();
         }
     });
 
     messageTransform.on("error", function (error) {
-
+    
     });
 
     messageTransform.on("end",function () {
@@ -229,16 +233,79 @@ function VNBClient(socket, authentication) {
 
     });
     
-    self.sendCommand = new function (args...) {
+    self.sendCommand = function (name, buffer) {
 
     };
 
-    self.callFunction = new function (args...) {
+    self.callFunction = function (name, buffer) {
+        let seqno = currentSeqno;
+        currentSeqno += 1;
+                
+        socket.write()
 
     };
 
     socket.pipe(messageTransform);
 }
 
+function NetbeansColor (value) {
+    "use strict";
+
+    this.convert = function() {
+        return value ? value : "none";
+    };
+}
+
+function NetbeansBool (value) {
+    "use strict";
+
+    this.convert = function () {
+        return value ? "T" : "F";
+    };
+}
+
+function NetbeansPosition (line, col) {
+    "use strict";
+
+    this.convert = function () {
+        return line+"/"+col;    
+    };
+}
+
+function NetbeansString (value) {
+    "use strict";
+
+    this.convert = function () {
+        var buffer = "\"";
+
+        for (var i = 0 ; i < value.length ; ++i){
+            switch (value[i]) {
+                case "\n" :
+                    buffer += "\\n";
+                    break;
+                case "\t" :
+                    buffer += "\\t";
+                    break;
+                case "\r" :
+                    buffer += "\\r";
+                    break;
+                case "\\" : 
+                    buffer += "\\\\";
+                    break;
+                case "\"" :
+                    buffer += "\\\"";
+                    break;
+                default :
+                    buffer += value[i];
+                    break;
+
+            }
+        } 
+
+        buffer += "\"";
+        return buffer;
+    }
+}
+
 
 VNBClient.prototype = EventEmitter;