Tested with Lua 5.1/5.2/5.3/5.4 how? ```lua curl = require "cURL" -- HTTP Get curl.easy{ url = 'http://httpbin.org/get', httpheader = { "X-Test-Header1: Header-Data1", "X-Test-Header2: Header-Data2", }, writefunction = io.stderr -- use io.stderr:write() } :perform() :close() ```