Fix abandonware@bleno issue-51 by skipping 2902 peripheral declared c…

…haracteristic descriptor

lib/hci-socket/gatt.js

@@ -218,6 +218,15 @@ class Gatt  extends EventEmitter {
 
         for (let k = 0; k < characteristic.descriptors.length; k++) {
           const descriptor = characteristic.descriptors[k];
+
+          //https://github.com/abandonware/bleno/issues/51
+          //above, if the characteristic defines notify, the 2902 characteristic descriptor is added automatically
+          //if the peripheral also declares this, we don't want to add it again
+          //flags (properties, secure etc) above are better defined
+          if(descriptor.uuid == '2902')
+          {
+            continue;
+          }
 
           handle++;
           const descriptorHandle = handle;