From cdd09022d32de8446bae6bce61b86302b6c99472 Mon Sep 17 00:00:00 2001
From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Fri, 20 Mar 2015 14:20:35 +0100
Subject: [PATCH] report SIP2 empty read

---
 scripts/RFID-JSONP-server.pl | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/scripts/RFID-JSONP-server.pl b/scripts/RFID-JSONP-server.pl
index 3e1d4fd..9396f5d 100755
--- a/scripts/RFID-JSONP-server.pl
+++ b/scripts/RFID-JSONP-server.pl
@@ -92,15 +92,12 @@ sub sip2_message {
 	
 	my $expect = substr($send,0,2) | 0x01;
 
-	my $in = '';
-	my $repeat = 1;
-	while ( $in eq '' && $repeat < 10 ) {
-		$in = <$sock>;
-		$in =~ s/^\n//;
-		$in =~ s/\r$//;
-		warn "SIP2 <<<< ",dump($in), " repeat: $repeat\n";
-		$repeat++;
-	}
+	my $in = <$sock>;
+	$in =~ s/^\n//;
+	$in =~ s/\r$//;
+	warn "SIP2 <<<< ",dump($in), "\n";
+
+	die "empty read from SIP server" unless length $in > 1;
 
 	die "expected $expect" unless substr($in,0,2) != $expect;
 
-- 
2.20.1