gatt - enable add / remove /removeAll services for attribute caching

Author: brycejacobs

examples/pizza/peripheral.js

@@ -24,6 +24,7 @@ var PizzaService = require('./pizza-service');
 //
 var name = 'PizzaSquat';
 var pizzaService = new PizzaService(new pizza.Pizza());
+var pizzaService2 = new PizzaService(new pizza.Pizza());
 
 //
 // Wait until the BLE radio powers on before attempting to advertise.
@@ -56,5 +57,16 @@ bleno.on('advertisingStart', function(err) {
     bleno.setServices([
       pizzaService
     ]);
+
+    var flip = false;
+    setInterval(function (){
+        if(flip){
+          bleno.removeService(pizzaService2);
+        } else {
+          bleno.addService(pizzaService2);
+        }
+        flip = !flip;
+    }, 1500);
+
   }
 });

lib/bleno.js

@@ -199,6 +199,14 @@ Bleno.prototype.onAdvertisingStop = function() {
   this.emit('advertisingStop');
 };
 
+Bleno.prototype.addService = function(service) {
+   this._bindings.addService(service);
+};
+
+Bleno.prototype.removeService = function(service) {
+    this._bindings.removeService(service);
+};
+
 Bleno.prototype.setServices = function(services, callback) {
   if (callback) {
     this.once('servicesSet', callback);

lib/hci-socket/bindings.js

@@ -48,7 +48,17 @@ BlenoBindings.prototype.stopAdvertising = function() {
   this._gap.stopAdvertising();
 };
 
-BlenoBindings.prototype.setServices = function(services) {
+BlenoBindings.prototype.addService = function(service) {
+    this._gatt.addService(service);
+
+    this.emit('servicesChanged');
+};
+
+BlenoBindings.prototype.removeService = function (service){
+    this._gatt.removeService(service);
+}
+
+BlenoBindings.prototype.setServices = function(services, deviceName) {
   this._gatt.setServices(services);
 
   this.emit('servicesSet');