conght / Quic

QUIC (Quick UDP Internet Connections)

QUIC is an early-stage network protocol [Jim Roskind [email protected]] is experimenting with that runs a stream multiplexing protocol over a new flavor of Transport Layer Security (TLS) on top of UDP instead of TCP. QUIC combines a carefully selected collection of techniques to reduce the number of round trips we need as we surf the Internet. You can learn more in the design document, but here are some of the highlights:

• High security similar to TLS
• Fast (often 0-RTT) connectivity similar to TLS Snapstart combined with TCP Fast Open
• Packet pacing to reduce packet loss
• Packet error correction to reduce retransmission latency
• UDP transport to avoid TCP head-of-line blocking
• A connection identifier to reduce reconnections for mobile clients
• A pluggable congestion control mechanism

This is "libquic", a user-space library that re-uses/packages/purposes the QUIC code from the Chromium browser project so that other software can use this new protocol for Internet layer-4 communications. QUIC is a general purpose protocol built primarily with HTTP in mind, but there is no reason not to use it as a replacement for TCP in other non-HTTP based connections.

QUIC Discussions: [email protected] https://groups.google.com/a/chromium.org/d/forum/proto-quic

[1] http://blog.chromium.org/2013/06/experimenting-with-quic.html [2] https://docs.google.com/document/d/1RNHkx_VvKWyWg6Lr8SZ-saqsQx7rFV-ev2jRFUoVD34/preview?sle=true [3] https://docs.google.com/document/d/1lmL9EF6qKrk7gbazY8bIdvq3Pno2Xj_l_YShP40GLQE/edit#heading=h.h3jsxme7rovm