From ac5adad90813e8e64e6de674d7e30baa98c0e108 Mon Sep 17 00:00:00 2001
From: justme-1968 <justme-1968@users.noreply.github.com>
Date: Wed, 12 Nov 2014 15:16:59 +0000
Subject: [PATCH] 37_harmony.pm: don't write to disconnected devices

git-svn-id: https://svn.fhem.de/fhem/trunk@6954 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/37_harmony.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fhem/FHEM/37_harmony.pm b/fhem/FHEM/37_harmony.pm
index e06a07595..97d4592f9 100644
--- a/fhem/FHEM/37_harmony.pm
+++ b/fhem/FHEM/37_harmony.pm
@@ -1172,6 +1172,8 @@ harmony_send($$)
   my ($hash, $data) = @_;
   my $name = $hash->{NAME};
 
+  return undef if( !$hash->{CD} );
+
   Log3 $name, 4, "$name: send: $data";
 
   syswrite $hash->{CD}, $data;