2018/10/18 Workers Runtime Release Notes

New this week:

  • V8 updated: ->
  • Fixed a bug in which responses to HEAD requests which contained neither Content-Length nor Transfer-Encoding headers would get Content-Length: 0 incorrectly added. This was commonly triggered when zones had Cloudflare features enabled which modify response bodies (such as Scrape Shield), as these features discard the Content-Length on HEAD requests (because it’s impossible to tell what the correct length would be without knowing the content). Workers would then add the incorrect Content-Length: 0.