voting: Add SendRatePerMinute cfg param

nonvoting/server/config/config.go

@@ -160,6 +160,9 @@ func (pCfg *Parameters) validate() error {
 }
 
 func (pCfg *Parameters) applyDefaults() {
+	if pCfg.SendRatePerMinute == 0 {
+		pCfg.SendRatePerMinute = defaultSendRatePerMinute
+	}
 	if pCfg.MixLambda == 0 {
 		pCfg.MixLambda = defaultMixLambda
 	}
@@ -172,9 +175,6 @@ func (pCfg *Parameters) applyDefaults() {
 	if pCfg.SendLambda == 0 {
 		pCfg.SendLambda = defaultSendLambda
 	}
-	if pCfg.SendRatePerMinute == 0 {
-		pCfg.SendRatePerMinute = defaultSendRatePerMinute
-	}
 	if pCfg.SendMaxInterval == 0 {
 		pCfg.SendMaxInterval = uint64(rand.ExpQuantile(pCfg.SendLambda, defaultSendMaxPercentile))
 	}

voting/server/config/config.go

@@ -124,6 +124,9 @@ func (lCfg *Logging) validate() error {
 
 // Parameters is the network parameters.
 type Parameters struct {
+	// SendRatePerMinute is the rate per minute.
+	SendRatePerMinute uint64
+
 	// MixLambda is the inverse of the mean of the exponential distribution
 	// that the Sphinx packet per-hop mixing delay will be sampled from.
 	MixLambda float64
@@ -164,6 +167,9 @@ func (pCfg *Parameters) validate() error {
 }
 
 func (pCfg *Parameters) applyDefaults() {
+	if pCfg.SendRatePerMinute == 0 {
+		pCfg.SendRatePerMinute = defaultSendRatePerMinute
+	}
 	if pCfg.MixLambda == 0 {
 		pCfg.MixLambda = defaultMixLambda
 	}

voting/server/state.go

@@ -295,6 +295,7 @@ func (s *state) getDocument(descriptors []*descriptor, params *config.Parameters
 	// Build the Document.
 	doc := &s11n.Document{
 		Epoch:              s.votingEpoch,
+		SendRatePerMinute:  params.SendRatePerMinute,
 		MixLambda:          params.MixLambda,
 		MixMaxDelay:        params.MixMaxDelay,
 		SendLambda:         params.SendLambda,