H2O

H2O is licensed under the MIT license.

Portions of the software use following libraries that are also licensed under the MIT license: khash.h, PicoHTTPParser, libyaml.

Depending on how H2O is configured, the software links against OpenSSL or LibreSSL, both of which are dual-licensed under the OpenSSL License and the original SSLeay license.

Please refer to the main developer's presentation slides at the HTTP/2 conference, and his weblog.

Aside from the standalone server, H2O can also be used as a software library. The name of the library is libh2o.

To build H2O as a library you will need to install the following dependencies:

• libuv version 1.0 or above
• OpenSSL version 1.0.2 or above¹

In case the dependencies are installed under a non-standard path, PKG_CONFIG_PATH configuration variable can be used for specifying their paths. For example, the following snippet builds libh2o using the libraries installed in their respective paths.

% PKG_CONFIG_PATH=/usr/local/libuv-1.4/lib/pkgconfig:/usr/local/openssl-1.0.2a/lib/pkgconfig cmake .
% make libh2o

For more information, please refer to the GitHub issues tagged as libh2o.

Please refer to the GitHub issues tagged as FAQ.