Client: Use sequence number to dedupe presence notifications

Change-Id: I94ddd5038b4dd0aa8a567b751b4f25331698094a
intel · Oct 28, 2016 · 8507037 · 8507037
1 parent dac38ad
commit 8507037
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/lib/Client.js b/lib/Client.js
@@ -372,6 +372,9 @@ client = _.extend( new Client(), {
 	}
 } );
 
+// map of deviceId: sequenceNumber
+var sequences = {};
+
 handles.replace( {
 	method: "OC_REST_DISCOVER",
 	requestUri: csdk.OC_RSRVD_PRESENCE_URI
@@ -407,15 +410,21 @@ handles.replace( {
 				.then( function( device ) {
 					if ( device ) {
 						resolver.remove( device.uuid );
-						client.emit( "devicelost", device );
+						if ( sequences[ device.uuid ] !== response.sequenceNumber ) {
+							client.emit( "devicelost", device );
+							sequences[ device.uuid ] = response.sequenceNumber;
+						}
 					}
 				} );
 		} else if ( response.payload.trigger ===
 				csdk.OCPresenceTrigger.OC_PRESENCE_TRIGGER_CREATE ) {
 
 			client.getDeviceInfo( response.addr )
 				.then( function( device ) {
-					client.emit( "devicefound", device );
+						if ( sequences[ device.uuid ] !== response.sequenceNumber ) {
+							client.emit( "devicefound", device );
+							sequences[ device.uuid ] = response.sequenceNumber;
+						}
 					return client.findResources( { deviceId: device.uuid } );
 				} )
 				.catch( function( error ) {