HttpCore is a set of components implementing the most fundamental aspects of the HTTP protocol that are nonetheless sufficient to develop full-featured client-side and server-side HTTP services with a minimal footprint. HttpCore has the following scope and goals:

A consistent API for building client / proxy / server side HTTP services A consistent API for building both synchronous and asynchronous HTTP services A set of low level components based on blocking (classic) and non-blocking (NIO) I/O models

Implementation of the most fundamental HTTP transport aspects Balance between good performance and the clarity & expressiveness of API Small (predictable) memory footprint Self-contained library (no external dependencies beyond JRE)

A replacement for HttpClient A replacement for Servlet APIs