# HG changeset patch
# User Sergey Kandaurov <pluknet@nginx.com>
# Date 1521130210 -10800
# Node ID 84a661563eaee244ecee7463fa2f40e9b2b52beb
# Parent  a94a0fc60d56ea7374487eaa624040a19352f157
Tests: allow to set empty HTTP/2 connection preface.

diff --git a/lib/Test/Nginx/HTTP2.pm b/lib/Test/Nginx/HTTP2.pm
--- a/lib/Test/Nginx/HTTP2.pm
+++ b/lib/Test/Nginx/HTTP2.pm
@@ -36,8 +36,8 @@ sub new {
 	my ($port, %extra) = @_;
 
 	my $s = $extra{socket} || new_socket($port, %extra);
-	my $preface = $extra{preface}
-		|| 'PRI * HTTP/2.0' . CRLF . CRLF . 'SM' . CRLF . CRLF;
+	my $preface = defined $extra{preface} ? $extra{preface}
+		: 'PRI * HTTP/2.0' . CRLF . CRLF . 'SM' . CRLF . CRLF;
 
 	if ($extra{proxy}) {
 		raw_write($s, $extra{proxy});