wait for cvend at startup, only redraw on state changes

1 files changed, 7 insertions, 5 deletions

diff --git a/ipp/ipp.go b/ipp/ipp.go
index 391b094..89036b0 100644
--- a/ipp/ipp.go
+++ b/ipp/ipp.go
@@ -149,11 +149,11 @@ func (s *session) handleMsg(bs []byte) (nRead int) {
 			return
 		}
 	}
-	var ellipsis string
-	if ippLen > 0 {
-		ellipsis = "..."
-	}
 	if *Trace {
+		var ellipsis string
+		if ippLen > 0 {
+			ellipsis = "..."
+		}
 		log.Printf("%s < %s%s%s", s.path, hex.EncodeToString(bs[:7]), ellipsis, hex.EncodeToString(bs[7+ippLen:expectedLen]))
 	}
 	if s.handler != nil {
@@ -166,7 +166,9 @@ func (s *session) Close() error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	s.closed = true
-	return unix.Close(s.fd)
+	fd := s.fd
+	s.fd = -1
+	return unix.Close(fd)
 }
 
 func (s *session) Write(bs []byte) (int, error) {