diff --git a/test/Makefile b/test/Makefile
index abb7d0a..b1b58e3 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -24,6 +24,9 @@ nettest:
 nettesterr:
 	for f in packets/error-*; do echo ">> $$f"; cat $$f | nc localhost $(PORT); done
 
+splittest:
+	for f in packets/full-*; do echo ">> $$f"; ./splittest.pl $$f $(PORT) | diff -u $$f -; done
+
 nettestp1:
 	(for f in packets/part-1-p*; do cat $$f; done) | nc localhost $(PORT) | diff -u packets/full-1 -
 
diff --git a/test/splittest.pl b/test/splittest.pl
new file mode 100755
index 0000000..9794390
--- /dev/null
+++ b/test/splittest.pl
@@ -0,0 +1,28 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use IO::Socket;
+$| = 1;
+
+print "Usage: splittest.pl <packet file> [<port> [<chunk length> [-v]]]\n" and exit unless @ARGV;
+my $port = $ARGV[1] || 4440;
+my $length = int($ARGV[2] || 1); $length = 1 if $length < 1;
+my $verbose = $ARGV[3];
+
+open FILE, '<', $ARGV[0] or die "$ARGV[0]: $!\n";
+my $file = ''; $file .= $_ while <FILE>;
+close FILE;
+
+my $s = IO::Socket::INET->new(Proto => "tcp", PeerAddr => "localhost", PeerPort => $port) or die "localhost:$port: $!\n";
+$s->autoflush(1);
+
+my $c = 0;
+while ($c < length $file) {
+	my $chunk = substr $file, $c, $length;
+	print "[$chunk]" if $verbose;
+	print $s $chunk;
+	$c += $length;
+}
+
+print while <$s>;
+close $s;