(nghttpx proxy) mruby script to add Link preload header into normal response

200-add-preload.rb

# (on nghttpx proxy)
# mruby script to add Link preload header into normal response
# To execute:
# ./src/nghttpx --mruby-file ./200-add-preload.rb  --frontend="localhost,3000;no-tls"  -L INFO

 class App
   def on_req(env)
     req = env.req
     return if req.method != 'GET'
     resp = env.resp
     #path = req.path
 #    if path == '/?103-eh' || path == '/index.html?103-eh'
       resp.add_header 'link', '</stylesheets/screen.css>;rel=preload'
       return
 #    end
   end
 end
 
 App.new