les: changed error message, added balance tracker update

les/api.go

@@ -35,7 +35,7 @@ var (
 	errNotActivated         = errors.New("checkpoint registrar is not activated")
 	errUnknownBenchmarkType = errors.New("unknown benchmark type")
 	errBalanceOverflow      = errors.New("balance overflow")
-	errNoPriority           = errors.New("not enough priority")
+	errNoPriority           = errors.New("priority too low to raise capacity")
 )
 
 const maxBalance = math.MaxInt64

les/clientpool.go

@@ -446,6 +446,7 @@ func (f *clientPool) balanceExhausted(id enode.ID) {
 		f.connectedCap += f.freeClientCap - c.capacity
 		totalConnectedGauge.Update(int64(f.connectedCap))
 		c.capacity = f.freeClientCap
+		c.balanceTracker.setCapacity(c.capacity)
 		c.peer.updateCapacity(c.capacity)
 	}
 	pb := f.ndb.getOrNewPB(id)