helper/https-cert | 9 ---------
 helper/tls-cert   | 3 +++

diff --git a/helper/https-cert b/helper/https-cert
deleted file mode 100755
index 573b6179d5cfaeccf2066f651e53fa016748e6ac..0000000000000000000000000000000000000000
--- a/helper/https-cert
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/sh -e
-
-bad=0
-curl --range 0-100 --max-time 60 --verbose "$1" >/dev/null 2>state/curl-out || bad=1
-grep -q "subject:.*CN=$2" state/curl-out || bad=1
-if [ "$bad" -eq 1 ] ; then
-    cat state/curl-out
-    exit 1
-fi
diff --git a/helper/tls-cert b/helper/tls-cert
new file mode 100755
index 0000000000000000000000000000000000000000..321538652ed2474ce95e3b4895b77fd9d18ee602
--- /dev/null
+++ b/helper/tls-cert
@@ -0,0 +1,3 @@
+#!/bin/sh -e
+
+tcpclient -DHR $1 ${2:-443} tlsc -name $1 -show :