# Netty Project Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. ## Links * [Web Site](https://netty.io/) * [Downloads](https://netty.io/downloads.html) * [Documentation](https://netty.io/wiki/) * [@netty_project](https://twitter.com/netty_project) ## How to build For the detailed information about building and developing Netty, please visit [the developer guide](https://netty.io/wiki/developer-guide.html). This page only gives very basic information. You require the following to build Netty: * Latest stable [Oracle JDK 7](http://www.oracle.com/technetwork/java/) * Latest stable [Apache Maven](http://maven.apache.org/) * If you are on Linux, you need [additional development packages](https://netty.io/wiki/native-transports.html) installed on your system, because you'll build the native transport. Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application. ## Branches to look Development of all versions takes place in each branch whose name is identical to `<majorVersion>.<minorVersion>`. For example, the development of 3.9 and 4.0 resides in [the branch '3.9'](https://github.com/netty/netty/tree/3.9) and [the branch '4.0'](https://github.com/netty/netty/tree/4.0) respectively. ## Usage with JDK 9 Netty can be used in modular JDK9 applications as a collection of automatic modules. The module names follow the reverse-DNS style, and are derived from subproject names rather than root packages due to historical reasons. They are listed below: * `io.netty.all` * `io.netty.buffer` * `io.netty.codec` * `io.netty.codec.dns` * `io.netty.codec.haproxy` * `io.netty.codec.http` * `io.netty.codec.http2` * `io.netty.codec.memcache` * `io.netty.codec.mqtt` * `io.netty.codec.redis` * `io.netty.codec.smtp` * `io.netty.codec.socks` * `io.netty.codec.stomp` * `io.netty.codec.xml` * `io.netty.common` * `io.netty.handler` * `io.netty.handler.proxy` * `io.netty.resolver` * `io.netty.resolver.dns` * `io.netty.transport` * `io.netty.transport.epoll` (`native` omitted - reserved keyword in Java) * `io.netty.transport.kqueue` (`native` omitted - reserved keyword in Java) * `io.netty.transport.unix.common` (`native` omitted - reserved keyword in Java) * `io.netty.transport.rxtx` * `io.netty.transport.sctp` * `io.netty.transport.udt` Automatic modules do not provide any means to declare dependencies, so you need to list each used module separately in your `module-info` file.