patch e8534a5cb083b3d82aff297783e2c5d2d683c8d3
Author: Enrique D. Bosch <presidev@AT@gmail.com>
Date:   Mon Sep 17 16:50:09 CEST 2018
  * Reset client keepalive when server keepalive (untagged "OK still here" like response) is detected
diff -rN -u old-idlebiff/idlebiff new-idlebiff/idlebiff
--- old-idlebiff/idlebiff	2024-04-29 14:47:12.270169063 +0200
+++ new-idlebiff/idlebiff	2024-04-29 14:47:12.270169063 +0200
@@ -512,11 +512,24 @@
 proc parse_idle_check con \
 {
   variable ::shared::idle
+  variable ::shared::ka
+  variable ::shared::conf
 
   if {[ catch { set linea [ read_line $con ] } ]} return
   set prim [ string range $linea 0 0 ]
   if {[ eq $prim + ]} { set idle 1 } \
-  elseif { $idle } { if {[ eq $prim * ]} { idle_cycle $con 1 } } \
+  elseif { $idle } \
+  {
+    if {[ eq $prim * ]} \
+    {
+      if {[ ok_untagged $linea ]} \
+      {
+        after cancel $ka
+        set ka [ after ${conf(keepalive)}000 { idle_cycle $con 0 } ]
+      } \
+      else { idle_cycle $con 1 } \
+    } \
+  } \
   else { parse_search $con $linea }
 }