Rename router to receiver for secondary connections (#2816)

internal/daemon/controller/controller.go

@@ -52,7 +52,7 @@ import (
 type downstreamRouter interface {
 	// StartRouteMgmtTicking starts a ticker which manages the router's
 	// connections.
-	StartRouteMgmtTicking(context.Context, func() string, int) error
+	StartConnectionMgmtTicking(context.Context, func() string, int) error
 
 	// ProcessPendingConnections starts a function that continually processes
 	// incoming client connections. This only returns when the provided context
@@ -468,7 +468,7 @@ func (c *Controller) Start() error {
 		}()
 		go func() {
 			defer c.tickerWg.Done()
-			err := c.downstreamRoutes.StartRouteMgmtTicking(
+			err := c.downstreamRoutes.StartConnectionMgmtTicking(
 				c.baseContext,
 				servNameFn,
 				-1,

internal/daemon/controller/listeners.go

@@ -26,7 +26,7 @@ import (
 // the function that handles a secondary connection over a provided listener
 var handleSecondaryConnection = closeListener
 
-func closeListener(_ context.Context, l, _ net.Listener, _ any) error {
+func closeListener(_ context.Context, l net.Listener, _ any) error {
 	if l != nil {
 		return l.Close()
 	}
@@ -244,7 +244,7 @@ func (c *Controller) configureForCluster(ln *base.ServerListener) (func(), error
 
 	return func() {
 		err := handleSecondaryConnection(c.baseContext, metric.InstrumentClusterTrackingListener(multiplexingReverseGrpcListener, "reverse-grpc"),
-			nil, c.downstreamRoutes)
+			c.downstreamRoutes)
 		if err != nil {
 			event.WriteError(c.baseContext, op, err, event.WithInfoMsg("handleSecondaryConnection error"))
 		}