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Nick Hill c6bdc2b7dc Reduce ByteBuffer duplication when resizing pooled direct ByteBufs (#9765)
Motivation:

Currently when use of Unsafe is disabled and an internal reallocation is
performed for a direct PooledByteBuf, a one-off temporary duplicate is
made of the source and destination backing nio buffers so that the
copy can be done in a threadsafe manner.

The need for this can be reduced by sharing the temporary duplicate
buffer that is already stored in the corresponding destination
PooledByteBuf instance.

Modifications:

Have PoolArena#memoryCopy(...) take the destination PooledByteBuf
instead of the underlying mem reference and offset, and use
internalNioBuffer() to obtain/initialize a reusable duplicate of the
backing nio buffer.

Result:

Fewer temporary allocations when resizing direct pooled ByteBufs in the
non-Unsafe case
2019-11-16 11:27:03 -08:00
.github Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:10:14 +02:00
.mvn support publishing snapshots from docker based ci (#8634) 2018-12-07 06:16:39 +01:00
all Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
bom Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:10:14 +02:00
buffer Reduce ByteBuffer duplication when resizing pooled direct ByteBufs (#9765) 2019-11-16 11:27:03 -08:00
codec Clean up expired docs. (#9756) 2019-11-06 09:43:51 +01:00
codec-dns Detect truncated responses caused by EDNS0 and MTU miss-match (#9468) 2019-08-17 09:58:40 +02:00
codec-haproxy Fix typos in javadocs (#9527) 2019-10-09 15:25:41 +02:00
codec-http Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
codec-http2 Add test to check Connection-Specific headers are removed in HTTP/2 (by HttpConversionUtil.toHttp2Headers) (#9766) 2019-11-08 10:15:19 +01:00
codec-memcache codec-memcache: copy metadata in binary full request response (#9160) 2019-05-22 11:06:16 +02:00
codec-mqtt Add constants for fixed-header only MQTT messages (#9749) 2019-11-08 10:17:16 +01:00
codec-redis migrate java8: use requireNonNull (#8840) 2019-02-04 10:32:25 +01:00
codec-smtp SmtpRequestEncoderTest ByteBuf leak (#9075) 2019-04-19 08:47:28 +02:00
codec-socks FIX : Unpacking causes socks5proxy init failure (#9582) 2019-09-20 10:17:13 +02:00
codec-stomp Fix encoding/decoding for UTF-8 stomp commands and headers (#9740) 2019-11-06 12:07:58 +01:00
codec-xml Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:10:14 +02:00
common Use interval instead of mask comparison for Recycler ratio (#9748) 2019-11-05 15:21:09 +01:00
dev-tools Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
docker Upgrade various JDK flavors / version in our docker-compose files (#9737) 2019-10-31 12:16:50 +01:00
example Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
handler Don't cache key material if sun.security.ssl.X509KeyManagerImpl is used (#9762) 2019-11-07 15:28:00 +01:00
handler-proxy Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
license Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
microbench Fix typos in javadocs (#9527) 2019-10-09 15:25:41 +02:00
resolver Close delegate resolver from RoundRobinInetAddressResolver (#9214) 2019-06-04 05:14:28 -07:00
resolver-dns Ignore invalid entries in /etc/resolv.conf when parsing (#9697) 2019-10-22 14:34:17 +02:00
resolver-dns-native-macos Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
tarball Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
testsuite Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
testsuite-autobahn Use allocator when constructing ByteBufHolder sub-types or use Unpool… (#9377) 2019-07-18 10:36:03 +02:00
testsuite-http2 Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
testsuite-native-image Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
testsuite-osgi Adjust testsuite-osgi to resolve bundles from local build (#8944) 2019-03-18 09:56:08 +01:00
testsuite-shading Allow to build on powerpc 2019-09-13 22:21:36 +02:00
transport Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
transport-blockhound-tests Test that NettyBlockHoundIntegration can be loaded with ServiceLoader (#9743) 2019-11-01 07:07:59 +01:00
transport-native-epoll Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
transport-native-kqueue Fix event loop shutdown timing fragility (#9639) 2019-10-08 12:00:59 +04:00
transport-native-unix-common Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
transport-native-unix-common-tests Rename SimpleChannelInboundHandler.channelRead0() to messageReceived() (#8819) 2019-11-01 07:23:07 +01:00
transport-sctp Deprecate ChannelInboundHandlerAdapter and ChannelOutboundHandlerAdapter (#8929) 2019-03-13 09:46:10 +01:00
.fbprefs Updated Find Bugs configuration 2009-03-04 10:33:09 +00:00
.gitattributes Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
.gitignore Add vscode specific files / directory to .gitignore (#9652) 2019-10-10 07:35:34 +02:00
CONTRIBUTING.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:10:14 +02:00
LICENSE.txt Relicensed to Apache License v2 2009-08-28 07:15:49 +00:00
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 Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:03:40 +01:00
pom.xml Update to latest netty-tcnative release (#9763) 2019-11-07 20:31:26 +01:00
README.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:10:14 +02:00
run-example.sh Drop SPDY support (#8845) 2019-02-07 09:25:31 +01:00

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.