This is the first stable (GA) release of HttpCore 4.1. This release provides a compatibility mode with JREs that have a naive (broken) implementation of SelectionKey API and also improves compatibility with the Google Android platform. There has also been a number of performance related improvements and bug fixes in both blocking and non-blocking components.
All upstream projects are encouraged to upgrade.
HttpCore is a set of low level HTTP transport components that can be used to build custom client and server side HTTP services with a minimal footprint. HttpCore supports two I/O models: blocking I/O model based on the classic Java I/O and non-blocking, event driven I/O model based on Java NIO. The blocking I/O model may be more appropriate for data intensive, low latency scenarios, whereas the non-blocking model may be more appropriate for high latency scenarios where raw data throughput is less important than the ability to handle thousands of simultaneous HTTP connections in a resource efficient manner.