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Norman Maurer d728a72e74
Combine flushes in DnsNameResolver to allow usage of sendmmsg to reduce syscall costs (#8470)
Motivation:

Some of transports support gathering writes when using datagrams. For example this is the case for EpollDatagramChannel. We should minimize the calls to flush() to allow making efficient usage of sendmmsg in this case.

Modifications:

- minimize flush() operations when we query for multiple address types.
- reduce GC by always directly schedule doResolveAll0(...) on the EventLoop.

Result:

Be able to use sendmmsg internally in the DnsNameResolver.
2018-11-21 06:42:40 +01:00
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buffer Fix ref-counting when CompositeByteBuf is used with retainedSlice() (#8497) 2018-11-13 20:56:09 +01:00
codec Don't swallow intermediate write failures in MessageToMessageEncoder (#8454) 2018-11-03 10:36:26 +01:00
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common Allow adjusting of lead detection sampling interval. (#8568) 2018-11-16 17:22:03 +01:00
dev-tools [maven-release-plugin] prepare for next development iteration 2018-10-29 15:38:51 +00:00
docker Update to openjdk 12ea19 (#8487) 2018-11-09 16:50:58 +01:00
example Remove transitive dependency on slf4j in example (#8582) 2018-11-21 06:39:28 +01:00
handler Fix test that assumed detection of peer supported algs is not supported in BoringSSL. (#8573) 2018-11-19 12:13:05 +01:00
handler-proxy [maven-release-plugin] prepare for next development iteration 2018-10-29 15:38:51 +00:00
license Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
microbench Streamline CompositeByteBuf internals (#8437) 2018-11-03 10:37:07 +01:00
resolver [maven-release-plugin] prepare for next development iteration 2018-10-29 15:38:51 +00:00
resolver-dns Combine flushes in DnsNameResolver to allow usage of sendmmsg to reduce syscall costs (#8470) 2018-11-21 06:42:40 +01:00
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testsuite-shading Include correct dependencies for testsuite-shading on windows. (#8491) 2018-11-12 20:59:44 +01:00
transport Fix javadoc to correctly explain how ChannelDuplexHandler.deregister(...) works. (#8577) 2018-11-20 16:45:15 +01:00
transport-native-epoll Add testcase for epollWait(...) with negative timerfd values. (#8447) 2018-10-30 19:38:02 +01:00
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CONTRIBUTING.md
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mvnw Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
mvnw.cmd Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
NOTICE.txt Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
pom.xml Update to netty-tcnative 2.0.20.Final (#8561) 2018-11-15 18:05:15 +01:00
README.md Provide an Automatic-Module-Name for the netty-all artifact fixes #7644 2018-01-27 20:31:16 +01:00
run-example.sh Add UptimeServer and adjust UptimeClient's code style. 2017-04-28 07:41:07 +02:00

Netty Project

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

How to build

For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.

You require the following to build Netty:

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' and the branch '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.