mod_c2s,mod_s2s: Collect stats on TLS versions and ciphers

author: Kim Alvefur <zash@zash.se>
date: Wed, 16 Jun 2021 00:00:17 +0200
parent: 11560:3bbb1af92514
child: 11614:1ac8976f09a9
--- a/plugins/mod_c2s.lua	Sat Jun 12 18:06:37 2021 +0200
+++ b/plugins/mod_c2s.lua	Wed Jun 16 00:00:17 2021 +0200
@@ -39,6 +39,12 @@
 local listener = {};
 local runner_callbacks = {};
 
+local m_tls_params = module:metric(
+	"counter", "encrypted", "",
+	"Encrypted connections",
+	{"protocol"; "cipher"}
+);
+
 module:hook("stats-update", function ()
 	-- for push backends, avoid sending out updates for each increment of
 	-- the metric below.
@@ -115,6 +121,7 @@
 			local info = sock:info();
 			(session.log or log)("info", "Stream encrypted (%s with %s)", info.protocol, info.cipher);
 			session.compressed = info.compression;
+			m_tls_params:with_labels(info.protocol, info.cipher):add(1)
 		else
 			(session.log or log)("info", "Stream encrypted");
 		end