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Scott Mitchell ed0668384b NIO read spin event loop spin when half closed (#7801)
Motivation:
AbstractNioByteChannel will detect that the remote end of the socket has
been closed and propagate a user event through the pipeline. However if
the user has auto read on, or calls read again, we may propagate the
same user events again. If the underlying transport continuously
notifies us that there is read activity this will happen in a spin loop
which consumes unnecessary CPU.

Modifications:
- AbstractNioByteChannel's unsafe read() should check if the input side
of the socket has been shutdown before processing the event. This is
consistent with EPOLL and KQUEUE transports.
- add unit test with @normanmaurer's help, and make transports consistent with respect to user events

Result:
No more read spin loop in NIO when the channel is half closed.
2018-03-28 20:02:57 +02:00
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common HttpProxyHandler generates invalid CONNECT url and Host header when address is resolved 2018-03-27 09:43:11 +02:00
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handler Ensure we not schedule multiple timeouts for close notify 2018-03-27 09:43:46 +02:00
handler-proxy HttpProxyHandler generates invalid CONNECT url and Host header when address is resolved 2018-03-27 09:43:11 +02:00
license Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
microbench Copies from read-only heap ByteBuffer to direct ByteBuf can avoid stealth ByteBuf allocation and additional copies 2018-02-27 09:54:21 +09:00
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testsuite NIO read spin event loop spin when half closed (#7801) 2018-03-28 20:02:57 +02:00
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transport NIO read spin event loop spin when half closed (#7801) 2018-03-28 20:02:57 +02:00
transport-native-epoll NIO read spin event loop spin when half closed (#7801) 2018-03-28 20:02:57 +02:00
transport-native-kqueue NIO read spin event loop spin when half closed (#7801) 2018-03-28 20:02:57 +02:00
transport-native-unix-common Ignore EINTR on close(...) as there is nothing sane we can do. 2018-03-23 07:39:17 +01:00
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pom.xml Update to conscrypt 1.0.1 2018-03-27 19:09:54 +02:00
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.