-       @Override
-       public synchronized void onPerformSync(
-                       Account account, 
-                       Bundle extras, 
-                       String authority, 
-                       ContentProviderClient provider, 
-                       SyncResult syncResult) {
-               
-               this.setAccount(account);
-               this.setContentProvider(provider);
+    @Override
+    public void onPerformSync(Account account, Bundle extras, String authority,
+            ContentProviderClient provider, SyncResult syncResult) {
+        setAccount(account);
+        setContentProvider(provider);
+        Cursor c = getLocalContacts(false);
+        if (c.moveToFirst()) {
+            do {
+                String lookup = c.getString(c
+                        .getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
+                String a = getAddressBookUri();
+                String uri = a + lookup + ".vcf";
+                FileInputStream f;
+                try {
+                    f = getContactVcard(lookup);
+                    HttpPut query = new HttpPut(uri);
+                    byte[] b = new byte[f.available()];
+                    f.read(b);
+                    query.setEntity(new ByteArrayEntity(b));
+                    HttpResponse response = fireRawRequest(query);
+                } catch (IOException e) {
+                    e.printStackTrace();
+                    return;
+                } catch (OperationCanceledException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                } catch (AuthenticatorException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                }
+            } while (c.moveToNext());
+            // } while (c.moveToNext());
+        }