title: Unable to access request.response.meta['redirect_urls'] from Scrapy script
body: <p>I am unable to access <code>request.response.meta['redirect_urls']</code> from my Scrapy script, but have no problem accessing this information for the same webpage in the Scrapy shell. When I print the keys of <code>request.response.meta</code> I only see <code>download_timeout, depth, download_latency, download_slot</code></p>
  
  <p>I am wondering if this is to do with one of the settings I have modified in my Scrapy script which contains the following:</p>
  
  <pre><code>settings.set('DEPTH_LIMIT', 4)
  settings.set('DOWNLOAD_DELAY', 1)
  settings.set('USER_AGENT', 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko)')
  settings.set('SPLASH_URL', 'http://192.168.59.103:8050')
  settings.set('DOWNLOADER_MIDDLEWARES', {'scrapyjs.SplashMiddleware': 725})
  settings.set('DUPEFILTER_CLASS', 'scrapyjs.SplashAwareDupeFilter')
  settings.set('HTTPCACHE_STORAGE', 'scrapyjs.SplashAwareFSCacheStorage')
  </code></pre>
  
  <p>I know redirection is also handled by middlewares so is this an issue because I am using SplashMiddleware and is it possible to use both? I know the redirection is happening from looking at <code>response.url</code></p>
  
  <p>Many thanks</p>