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h2o/quicly has 664 GitHub stars and 134 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-15 13:48 UTC. Last push 2026-11-13.

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About

A modular QUIC stack designed primarily for H2O

Developer Tools

README.md

Original

quicly CI

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.