various improvements

outbound/pool.go

@@ -228,7 +228,7 @@ func (p *Pool) Connect(id string) error {
 	p.peers[id] = &Peer{id: id, worker: worker}
 
 	if p.logger != nil {
-		p.logger.Info("connected to peer", "peer", id)
+		p.logger.Info("registered peer", "peer", id)
 	}
 
 	return nil

outbound/worker.go

@@ -416,7 +416,7 @@ func RunKeepalive(
 		case <-timer.C:
 			// send keepalive signal, then reset the timer
 			if logger != nil {
-				logger.Info("keepalive: peer is inactive")
+				logger.Info("keepalive: no activity observed")
 			}
 			select {
 			case keepalive <- struct{}{}: