Prevent libtorrent from starting the default plugins and features.

deluge/core/core.py

@@ -165,7 +165,7 @@ class Core(
 
         # Start the libtorrent session
         log.debug("Starting libtorrent session..")
-        self.session = lt.session(fingerprint)
+        self.session = lt.session(fingerprint, flags=0)
 
         # Load the session state if available
         self.load_session_state()

libtorrent/bindings/python/src/session.cpp

@@ -255,9 +255,17 @@ void bind_session()
         .value("delete_files", session::delete_files)
     ;
 
+    enum_<session::session_flags_t>("session_flags_t")
+        .value("add_default_plugins", session::add_default_plugins)
+        .value("start_default_features", session::start_default_features)
+    ;
+    
     class_<session, boost::noncopyable>("session", session_doc, no_init)
         .def(
-            init<fingerprint>(arg("fingerprint")=fingerprint("LT",0,1,0,0), session_init_doc)
+            init<fingerprint, int>((
+                arg("fingerprint")=fingerprint("LT",0,1,0,0)
+                , arg("flags")=session::start_default_features | session::add_default_plugins)
+                , session_init_doc)
         )
         .def(
             "listen_on", &listen_on