From cf1843e58670a4c98b46dcae8fbec0cb2976be96 Mon Sep 17 00:00:00 2001
From: Evgeny <me@jeka.su>
Date: Tue, 4 Aug 2026 18:25:24 +0300
Subject: [PATCH] fix: etcp_connect_timeout_tb=0 in utun_instance_create
 (missing init)
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utun_instance_create() allocated with u_calloc (zeroed) but never
set etcp_connect_timeout_tb. utun_instance_create_from_config() had it
at line 371, but utun_instance_create (used by chatgui) was missing.
Timer with tb=0 fires instantly → CLOSE sent before handshake completes.
Diagnostics confirmed: value_tb=0, tb=0, delta_tb=0 on Windows chatgui.
---
 src/utun_instance.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/utun_instance.c b/src/utun_instance.c
index 411abf40..f15b302b 100644
--- a/src/utun_instance.c
+++ b/src/utun_instance.c
@@ -317,7 +317,8 @@ struct UTUN_INSTANCE* utun_instance_create(struct UASYNC* ua, const char *config
         free_config(config);
         return NULL;
     }
-    
+    instance->etcp_connect_timeout_tb = 20000;
+
     // Init stats_dir from config file path
     {
         const char* last_sep = NULL;