#quic #state-machine #moved #protocols #transport #unordered #quicr

deprecated quicr-core

Moved to quinn-proto (was: State machine for the QUIC transport protocol)

5 releases (3 breaking)

Uses old Rust 2015

0.4.1 Oct 6, 2018
0.4.0 Jun 23, 2018
0.3.0 May 3, 2018
0.2.0 Apr 30, 2018
0.1.0 Apr 29, 2018

#12 in #unordered

Used in quicr


4.5K SLoC


This project has moved to, and merged with, quinn.


quicr is an implementation of the QUIC network protocol undergoing standardization by the IETF. It is currently suitable for experimental use. The implementation is split up into the state machine crate quicr-core which performs no IO internally and can be tested deterministically, and a high-level tokio-compatible API in quicr. See quicr/examples/ for usage.

Crates.io License: MIT License: Apache 2.0

API Docs


  • Simultaneous client/server operation
  • Ordered and unordered reads for improved performance


  • QUIC draft 11 with TLS 1.3 draft 28
  • Cryptographic handshake
  • Stream data w/ flow control and congestion control
  • Connection close
  • Stateless retry
  • Migration
  • 0-RTT data
  • Session resumption


Because TLS1.3 is a new standard, OpenSSL 1.1.1 (or later) is required for quicr to build.


~87K SLoC