multi: add new config peer-msg-rate-bytes

discovery/gossiper.go

@@ -407,6 +407,10 @@ type Config struct {
 	// BanThreshold is the score used to decide whether a given peer is
 	// banned or not.
 	BanThreshold uint64
+
+	// PeerMsgRateBytes is the rate limit for the number of bytes per second
+	// that we'll allocate to outbound gossip messages for a single peer.
+	PeerMsgRateBytes uint64
 }
 
 // processedNetworkMsg is a wrapper around networkMsg and a boolean. It is
@@ -609,6 +613,7 @@ func New(cfg Config, selfKeyDesc *keychain.KeyDescriptor) *AuthenticatedGossiper
 		AllotedMsgBytesPerSecond: cfg.MsgRateBytes,
 		AllotedMsgBytesBurst:     cfg.MsgBurstBytes,
 		FilterConcurrency:        cfg.FilterConcurrency,
+		PeerMsgBytesPerSecond:    cfg.PeerMsgRateBytes,
 	})
 
 	gossiper.reliableSender = newReliableSender(&reliableSenderCfg{