From ac40591dc1da05c8c9bb0f305039c339431646f9 Mon Sep 17 00:00:00 2001
From: jeka <evgeny@adaptto.ru>
Date: Fri, 27 Mar 2026 19:25:31 +0300
Subject: [PATCH] restrict keepalive by server

---
 src/etcp_connections.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/etcp_connections.c b/src/etcp_connections.c
index 6d56030..b7e7dc3 100644
--- a/src/etcp_connections.c
+++ b/src/etcp_connections.c
@@ -265,7 +265,12 @@ static void keepalive_timer_cb(void* arg) {
     }
 
     // Send keepalive only if no packets were sent since last tick
-    if (!link->pkt_sent_since_keepalive) etcp_link_send_keepalive(link);
+    if (!link->pkt_sent_since_keepalive) {
+      if (link->is_server) {
+        if (link->recv_keepalive) etcp_link_send_keepalive(link);// сервер прекращает слать keepalive если линк потерян (ждём keepalive клиента)
+        }
+      else etcp_link_send_keepalive(link);
+      }
     link->pkt_sent_since_keepalive = 0;
 
 restart_timer: