libevent 1.3d

libevent library provides a mechanism to execute a callback function when a specific event occurs on a file descriptor or after a timeout has been reached.
It is meant to replace the asynchronous event loop found in event-driven network servers.
libevent is meant to replace the event loop found in event driven network servers. An application just needs to call event_dispatch() and then add or remove events dynamically without having to change the event loop.
Currently, libevent supports /dev/poll, kqueue(2), select(2), poll(2) and epoll(4). It also has experimental support for real-time signals. The internal event mechanism is completely independent of the exposed event API, and a simple update of libevent can provide new functionality without having to redesign the applications. As a result, Libevent allows for portable application development and provides the most scalable event notification mechanism available on an operating system.
More information about event notification mechanisms for network servers can be found on Dan Kegels "The C10K problem" web page. Another library that abstracts asynchronous event notification is liboop.
Enhancements:
- Bugs in libevents HTTP layer were fixed.