Added 'rawheader' when parsing http requests. It saves the header fields, in order, preserving the case. Change http-headers.nse to read this instead of the processed headers.

nselib/http.lua

@@ -948,7 +948,7 @@ end
 --  @return A table with the values received from the server
 function parseResult( response )
   if type(response) ~= "string" then return response end
-  local result = {status=nil,["status-line"]=nil,header={},body=""}
+  local result = {status=nil,["status-line"]=nil,header={},rawheader={},body=""}
 
   -- try and separate the head from the body
   local header, body
@@ -974,6 +974,8 @@ function parseResult( response )
     else
       match, _, key, value = string.find( line, "(.+): (.*)" )
       if match and key and value then
+        -- Keep the raw header too, in case a script wants to access it
+        table.insert(result['rawheader'], line)
         key = key:lower()
         if result.header[key] then
           result.header[key] = result.header[key] .. ',' .. value

scripts/http-headers.nse

@@ -64,8 +64,8 @@ action = function(host, port)
 	end
 
 	local response = " \n"
-	for i, v in pairs(result.header) do
+	for _, header in pairs(result.rawheader) do
-		response = response .. string.format(" %s: %s\n", i, v)
+		response = response .. header .. "\n"
 	end
 		
 	return response