Everyone has heard of TCP and UDP, now a new transport layer protocol
has been developed by Google, QUIC which stands for 'Quick UDP Internet
Connections'. 

https://en.wikipedia.org/wiki/QUIC

QUIC aims to be nearly equivalent to an independent TCP connection, but
with much reduced latency (goal: 0-RTT connectivity overhead) and
better SPDY-like stream-multiplexing support.

QUIC, with its higher level application protocol elements which
multiplexes streams (similarly to SPDY and HTTP/2), can reduce or
compress redundant data transmissions (such as headers). As with SPDY,
QUIC benefits greatly from this compression, and is generally able to
make numerous HTTP(S) requests within a single initial congestion
window.

QUIC is tightly linked to the TLS/1.3 protocol and shares many
negotiation concepts and packets.  The OpenSSL team is now looking into
QUIC support.  

The Google Chrome browser has supported versions of QUIC for a few
years, as do Google servers, and the IETF has a working group writing
specifications. 

But it will be a while yet before QUIC becomes common.

Angus


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