fix(tcp-log):repeated sslhandshake in [tcp-log] plugin (#11803)

* FIX:Repeated sslhandshake in [tcp-log] plugin

* add changelog

* update message as the comments

* Update changelog/unreleased/kong/fix-tcp-log-sslhandshake.yml

Co-authored-by: tzssangglass <tzssangglass@apache.org>

---------

Co-authored-by: tzssangglass <tzssangglass@apache.org>
(cherry picked from commit 3fed60b)

changelog/unreleased/kong/fix-tcp-log-sslhandshake.yml

@@ -0,0 +1,3 @@
+message: "**tcp-log**: fix an issue that repeated ssl handshake"
+type: bugfix
+scope: Plugin

kong/plugins/tcp-log/handler.lua

@@ -31,8 +31,15 @@ local function log(premature, conf, message)
     return
   end
 
-  if conf.tls then
-    ok, err = sock:sslhandshake(true, conf.tls_sni, false)
+  local times, err = sock:getreusedtimes()
+  if not times then
+    kong.log.err("failed to get socket reused time to ", host, ":", tostring(port), ": ", err)
+    sock:close()
+    return
+  end
+
+  if conf.tls and times == 0 then
+    ok, err = sock:sslhandshake(false, conf.tls_sni, false)
     if not ok then
       kong.log.err("failed to perform TLS handshake to ", host, ":", port, ": ", err)
       sock:close()