[swiley]

>HTTP/2 allows you to send HTTP requests over a single TCP connection per domain.

HTTP/1.x definitely has support for this. Not using it actually may get your IP temporarily blocked from many sites.

[davideast]

Sorry, wrote this before coffee. I was referring to H/2 eliminating head-of-line blocking. HTTP/2 gives you one TCP connection for multiple requests rather than the 7 connection limit browsers impose on HTTP 1.x