quicly 
Quicly is an IETF QUIC protocol implementation, written from the ground up to be used primarily within the H2O HTTP server.
The software is licensed under the MIT License.
How to build
% git submodule update --init --recursive
% cmake .
% make
Building the software requires OpenSSL 1.0.2 or above.
If you have OpenSSL installed in a non-standard directory, you can pass the location using the PKG_CONFIG_PATH environment variable.
% PKG_CONFIG_PATH=/path/to/openssl/lib/pkgconfig cmake .
How to test
Install dependencies first:
# If you use system perl, use --sudo
% curl -sL https://cpanmin.us | perl - --sudo --self-upgrade
% cpanm --installdeps --notest --sudo .
# Otherwise, you'd better omit --sudo
% curl -sL https://cpanmin.us | perl - --self-upgrade
% cpanm --installdeps --notest .
Then, run the tests:
% make check
Running quicly
A command-line program (named cli) that runs either as a server or a client cli is provided.
To run the command as a client, specify the peer hostname and port number as the arguments.
% ./cli host port
To run the command as a server, specify the files that contain the certificate and private key, as well as the hostname and the port number to which the server should bind.
% ./cli -c server.crt -k server.key 0.0.0.0 4433
For more options, please refer to ./cli --help.