4 ms·

When Hatcher said it was "lower level than WebKit," I took that to mean it has something to do with iOS/OS X's built-in Twitter integration.

• influx 11y ago
  Seems like it could be DNS resolvers as well...
  • acdha 11y ago
    That's what I was thinking as well: DNS, possibly something like the way their IPv6/4 reachability checks work (Happy Eyeballs is new enough to make that very easy to believe), etc.