From 56526488941b1e3a410279f3d4061649b8319444 Mon Sep 17 00:00:00 2001
From: Dirk Koopman <djk@tobit.co.uk>
Date: Tue, 15 Sep 2020 01:28:48 +0200
Subject: [PATCH] use IO::Socket::IP and fix null reply

---
 perl/DXUDP.pm | 2 +-
 perl/wsjtl.pl | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/perl/DXUDP.pm b/perl/DXUDP.pm
index 01c3b3b0..fda14c6f 100644
--- a/perl/DXUDP.pm
+++ b/perl/DXUDP.pm
@@ -108,7 +108,7 @@ sub start {
 	my $host = $args->{LocalAddr} || $args->{host} || '0.0.0.0';
 	my $port = $args->{LocalPort} || $args->{port} || 1234;
 	
-    $socket = IO::Socket::INET6->new(
+    $socket = IO::Socket::IP->new(
                   LocalAddr => $host,
                   LocalPort => $port,
                   Proto => 'udp',
diff --git a/perl/wsjtl.pl b/perl/wsjtl.pl
index f991366e..7bfc8e7a 100755
--- a/perl/wsjtl.pl
+++ b/perl/wsjtl.pl
@@ -111,7 +111,7 @@ sub _udpread
    
 	my $in = $wsjtx->handle($handle, $data, "$host:$port");
 
-	distribute($in);
+	distribute($in) if $in && length $in;
 }
 
 sub _accept
-- 
2.43.0