4 files changed, 44 insertions, 13 deletions

diff --git a/src/server/Broadcaster.hpp b/src/server/Broadcaster.hpp
index 069a0499..b9e37c44 100644
--- a/src/server/Broadcaster.hpp
+++ b/src/server/Broadcaster.hpp
@@ -50,6 +50,14 @@ public:
 
 	void set_broadcast(const Raul::URI& client, bool broadcast);
 
+	/** Ignore a client when broadcasting.
+	 *
+	 * This is used to prevent feeding back updates to the client that
+	 * initiated a property set in the first place.
+	 */
+	void set_ignore_client(SPtr<Interface> client) { _ignore_client = client; }
+	void clear_ignore_client()                     { _ignore_client.reset(); }
+	
 	/** Return true iff there are any clients with broadcasting enabled.
 	 *
 	 * This is used in the audio thread to decide whether or not notifications
@@ -85,8 +93,11 @@ public:
 
 #define BROADCAST(msg, ...) \
 	std::lock_guard<std::mutex> lock(_clients_mutex); \
-	for (const auto& c : _clients) \
-		c.second->msg(__VA_ARGS__)
+	for (const auto& c : _clients) { \
+		if (c.second != _ignore_client) { \
+			c.second->msg(__VA_ARGS__); \
+		} \
+	} \
 
 	void bundle_begin() { BROADCAST(bundle_begin); }
 	void bundle_end()   { BROADCAST(bundle_end); }
@@ -151,6 +162,7 @@ private:
 	std::set<Raul::URI> _broadcastees;
 	std::atomic<bool>   _must_broadcast;
 	unsigned            _bundle_depth;
+	SPtr<Interface>     _ignore_client;
 };
 
 } // namespace Server
diff --git a/src/server/EventWriter.cpp b/src/server/EventWriter.cpp
index 96814ed2..60096d85 100644
--- a/src/server/EventWriter.cpp
+++ b/src/server/EventWriter.cpp
@@ -54,7 +54,7 @@ EventWriter::put(const Raul::URI&            uri,
 {
 	_engine.enqueue_event(
 		new Events::Delta(_engine, _respondee, _request_id, now(),
-		                  true, ctx, uri, properties));
+		                  Events::Delta::Type::PUT, ctx, uri, properties));
 }
 
 void
@@ -64,7 +64,8 @@ EventWriter::delta(const Raul::URI&            uri,
 {
 	_engine.enqueue_event(
 		new Events::Delta(_engine, _respondee, _request_id, now(),
-		                  false, Resource::Graph::DEFAULT, uri, add, remove));
+		                  Events::Delta::Type::PATCH, Resource::Graph::DEFAULT,
+		                  uri, add, remove));
 }
 
 void
@@ -124,7 +125,8 @@ EventWriter::set_property(const Raul::URI& uri,
 	add.insert(make_pair(predicate, value));
 	_engine.enqueue_event(
 		new Events::Delta(_engine, _respondee, _request_id, now(),
-		                  false, Resource::Graph::DEFAULT, uri, add, remove));
+		                  Events::Delta::Type::SET, Resource::Graph::DEFAULT,
+		                  uri, add, remove));
 }
 
 void
diff --git a/src/server/events/Delta.cpp b/src/server/events/Delta.cpp
index 90baaa52..6fd14fd5 100644
--- a/src/server/events/Delta.cpp
+++ b/src/server/events/Delta.cpp
@@ -48,7 +48,7 @@ Delta::Delta(Engine&           engine,
              SPtr<Interface>   client,
              int32_t           id,
              SampleCount       timestamp,
-             bool              create,
+             Type              type,
              Resource::Graph   context,
              const Raul::URI&  subject,
              const Properties& properties,
@@ -62,7 +62,7 @@ Delta::Delta(Engine&           engine,
 	, _graph(NULL)
 	, _compiled_graph(NULL)
 	, _context(context)
-	, _create(create)
+	, _type(type)
 	, _poly_lock(engine.store()->lock(), Glib::NOT_LOCK)
 {
 	if (context != Resource::Graph::DEFAULT) {
@@ -113,7 +113,7 @@ Delta::pre_process()
 		? static_cast<Ingen::Resource*>(_engine.store()->get(Node::uri_to_path(_subject)))
 		: static_cast<Ingen::Resource*>(_engine.block_factory()->plugin(_subject));
 
-	if (!_object && !is_client && (!is_graph_object || !_create)) {
+	if (!_object && !is_client && (!is_graph_object || _type != Type::PUT)) {
 		return Event::pre_process_done(Status::NOT_FOUND, _subject);
 	}
 
@@ -163,7 +163,7 @@ Delta::pre_process()
 	}
 
 	// Remove all added properties if this is a put
-	if (_create && _object) {
+	if (_type == Type::PUT && _object) {
 		for (const auto& p : _properties) {
 			_object->remove_property(p.first, p.second);
 		}
@@ -381,11 +381,22 @@ Delta::post_process()
 			_create_event->post_process();
 		} else {
 			respond();
-			if (_create) {
+			_engine.broadcaster()->set_ignore_client(_request_client);
+			switch (_type) {
+			case Type::SET:
+				_engine.broadcaster()->set_property(
+					_subject,
+					(*_properties.begin()).first,
+					(*_properties.begin()).second);
+				break;
+			case Type::PUT:
 				_engine.broadcaster()->put(_subject, _properties, _context);
-			} else {
+				break;
+			case Type::PATCH:
 				_engine.broadcaster()->delta(_subject, _remove, _properties);
+				break;
 			}
+			_engine.broadcaster()->clear_ignore_client();
 		}
 	} else {
 		respond();
diff --git a/src/server/events/Delta.hpp b/src/server/events/Delta.hpp
index 451b8e62..a8e8ed0b 100644
--- a/src/server/events/Delta.hpp
+++ b/src/server/events/Delta.hpp
@@ -69,11 +69,17 @@ class SetPortValue;
 class Delta : public Event
 {
 public:
+	enum class Type {
+		SET,
+		PUT,
+		PATCH
+	};
+			
 	Delta(Engine&                     engine,
 	      SPtr<Interface>             client,
 	      int32_t                     id,
 	      SampleCount                 timestamp,
-	      bool                        create,
+	      Type                        type,
 	      Resource::Graph             context,
 	      const Raul::URI&            subject,
 	      const Resource::Properties& properties,
@@ -109,7 +115,7 @@ private:
 	CompiledGraph*           _compiled_graph;
 	Resource::Graph          _context;
 	ControlBindings::Key     _binding;
-	bool                     _create;
+	Type                     _type;
 
 	SPtr<ControlBindings::Bindings> _old_bindings;