From d21a4ee4ce85e06dcfca4c5b4ba42a4e99bf57ac Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Wed, 13 Nov 2024 19:15:12 +0000
Subject: [PATCH] Correctly pack TCP payload size for dns.lua

---
 nselib/dns.lua | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/nselib/dns.lua b/nselib/dns.lua
index 872fc52a7..b4ba4f92c 100644
--- a/nselib/dns.lua
+++ b/nselib/dns.lua
@@ -145,8 +145,7 @@ local function sendPacketsTCP(data, host, port, timeout)
   local responses = {}
   socket:set_timeout(timeout)
   socket:connect(host, port)
-  -- add payload size we are assuming a minimum size here of 256?
-  local send_data = '\000' .. string.char(#data) .. data
+  local send_data = string.pack(">s2", data)
   socket:send(send_data)
   local response = ''
   local got_response = false