From b521bdeb496a8503698efbdbc59d45f6128012e2 Mon Sep 17 00:00:00 2001
From: simonchen <chenxinyi1978@hotmail.com>
Date: Thu, 16 Feb 2023 17:04:29 +0000
Subject: [PATCH] check linux version to enable fast open option.

---
 trunk/user/shadowsocks/ss/genssconfig.lua | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/trunk/user/shadowsocks/ss/genssconfig.lua b/trunk/user/shadowsocks/ss/genssconfig.lua
index 0f6a756059d..ecde1cebdd5 100755
--- a/trunk/user/shadowsocks/ss/genssconfig.lua
+++ b/trunk/user/shadowsocks/ss/genssconfig.lua
@@ -9,6 +9,13 @@ local server = cjson.decode(servertmp)
 if server.plugin == "simple-obfs" then
 server.plugin = "obfs-local"
 end
+local fast_open = false
+local f = io.popen("uname -r | awk -F '.' '{print $1\".\"$2;}'") -- runs command
+local v = f:read("*a") -- read linux version
+if tonumber(v) > 3.7 then
+  fast_open = true
+end
+
 local ss = {
 	server = server.server,
 	server_port = server.server_port,
@@ -20,7 +27,7 @@ local ss = {
 	plugin = server.plugin,
 	plugin_opts = server.plugin_opts,
 	reuse_port = true,
-	fast_open = false
+	fast_open = fast_open
 }
 
 print(cjson.encode(ss))