From eb7043fc1263762399fbafb9b023e2a4ee376bbf Mon Sep 17 00:00:00 2001
From: bol-van <none@none.none>
Date: Fri, 16 Jan 2026 16:37:56 +0300
Subject: [PATCH] zapret-antidpi: oob remove drop_ack

---
 lua/zapret-antidpi.lua | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/lua/zapret-antidpi.lua b/lua/zapret-antidpi.lua
index d5154ef..7b1fe36 100644
--- a/lua/zapret-antidpi.lua
+++ b/lua/zapret-antidpi.lua
@@ -1059,7 +1059,6 @@ end
 -- standard args : fooling, ip_id, rawsend, reconstruct, ipfrag
 -- arg : char - oob char
 -- arg : byte - oob byte
--- arg : drop_ack - drop original first ACK packet
 -- arg : urp - urgent pointer position marker, 'b' or 'e'. default - 0
 function oob(ctx, desync)
 	if not desync.track then return end
@@ -1080,12 +1079,8 @@ function oob(ctx, desync)
 		elseif pos==1 then
 			local data = desync.reasm_data or desync.dis.payload
 			if #data==0 then
-				if desync.arg.drop_ack then
-					DLOG("oob: dropping empty ACK")
-				else
-					DLOG("oob: sending empty ACK")
-					if not rawsend_dissect(desync.dis,rawsend_opts_base(desync)) then return end
-				end
+				-- empty ACK
+				return VERDICT_MODIFY
 			else
 				local oob = desync.arg.char or (desync.arg.byte and bu8(desync.arg.byte) or nil) or "\x00"
 				if #oob~=1 then