youtube/spfjs — pull request #125 by nicksay (2014-10-27 22:59:12+00:00)
Title: Preconnect specified links (experimental)

When processing a response, parse `` tags, and initiate
connections via an `` tag to both preresolve DNS for the target and
preconnect the socket.

For now, guard the feature behind a `experimental-preconnect` config.

Progress on #124.