H2O 1.4.0 发布， HTTP 服务器

H2O 1.4.0 发布，相比之前的1.3.1版本有一些更新和 bug 修复，主要如下：

• Support for the PROXY protocol

• Support for cache-based and ticket-based TLS session resumption using Memcached (and forward secrecy)

 features:

• cache-based session resumption using memcached

• automatic rollover of master secret used for ticket-based resumption

• synchronization of master secrets that rollover, using memcached

• directive to configure the cipher used for encrypting tickets (with default being aes-256-cbc)

更多内容请查看：发行说明。

H2O 是一个经过优化的 HTTP 服务器实现，可用于一个标准的独立服务器或者是一个 HTTP 服务器开发包。

支持的协议有：

• HTTP/1.0 (http and https)

• HTTP/1.1 (http and https)

• Websocket (RFC6455, both ws and wss)

• HTTP/2.0 (draft 14, via Upgrade, NPN, ALPN)

依赖包：

• OpenSSL (mandatory)

• libyaml (optional; required when building the server)

• libuv 1.0.0 (optional; required when using h2o as a library)

• wslay (optional; required if you need support for websocket)

实际测试发现 H2O 的性能是 Nginx 的两倍左右 (ab -c 500 -n 100000 -k)。