completing sync API

src/pEpmodule.cc

@@ -199,7 +199,8 @@ BOOST_PYTHON_MODULE(pEp)
     auto sync_mixin_class = class_<SyncMixIn, SyncMixIn_callback, boost::noncopyable>(
             "SyncMixIn", "p≡p Sync MixIn")
         .def("messageToSend", &SyncMixIn::messageToSend)
-        .def("showHandshake", &SyncMixIn::showHandshake);
+        .def("showHandshake", &SyncMixIn::showHandshake)
+        .def("deliverHandshakeResult", &SyncMixIn::deliverHandshakeResult);
 
     // init() and release()
 

src/sync_mixin.cc

@@ -46,6 +46,11 @@ namespace pEp {
             return PEP_STATUS_OK;
         }
 
+        void SyncMixIn::deliverHandshakeResult(int result)
+        {
+            ::deliverHandshakeResult(session, (sync_handshake_result) result);
+        }
+
         void SyncMixIn_callback::_messageToSend(Message msg)
         {
             call_method< void >(_self, "messageToSend", msg);

src/sync_mixin.hh

@@ -12,10 +12,13 @@ namespace pEp {
                 virtual void messageToSend(Message msg) {
                     throw runtime_error("override this method");
                 }
+
                 virtual void showHandshake(Identity me, Identity partner) {
                     throw runtime_error("override this method");
                 }
 
+                virtual void deliverHandshakeResult(int result);
+
             protected:
                 static PEP_STATUS _messageToSend(void *obj, message *msg);
                 static PEP_STATUS _showHandshake(void *obj,