bridge: bypass p2p for our own signatures

ghstack-source-id: ce2bbc780fdc6db13b3594c01aedd8ccd57d0abf
Pull Request resolved: https://github.com/certusone/wormhole/pull/60

bridge/cmd/guardiand/p2p.go

@@ -223,12 +223,11 @@ func p2p(obsvC chan *gossipv1.LockupObservation, sendC chan []byte) func(ctx con
 				continue
 			}
 
-			// TODO: better way to handle our own sigs?
-			//if envl.GetFrom() == h.ID() {
-			//	logger.Debug("received message from ourselves, ignoring",
-			//		zap.Any("payload", msg.Message))
-			//	continue
-			//}
+			if envl.GetFrom() == h.ID() {
+				logger.Debug("received message from ourselves, ignoring",
+					zap.Any("payload", msg.Message))
+				continue
+			}
 
 			logger.Debug("received message",
 				zap.Any("payload", msg.Message),

bridge/cmd/guardiand/processor.go

@@ -151,6 +151,9 @@ func vaaConsensusProcessor(lockC chan *common.ChainLock, setC chan *common.Guard
 				}
 
 				state.vaaSignatures[hash].ourVAA = v
+
+				// Fast path for our own signature
+				go func() { obsvC <- &obsv }()
 			case m := <-obsvC:
 				// SECURITY: at this point, observations received from the p2p network are fully untrusted (all fields!)
 				//