Netty 4.1.38.Final release, asynchronous event-driven network application framework

Netty 4.1.38.Final released, this version mainly fixes some bug, while some performance enhancements.

Major update includes:

• Prevent ByteToMessageDecoder in! Excessive reading when isAutoRead
• Http2FrameCodecBuilder.autoAckSettingsFrame (...) must be public
• Small header disabled Huffman coding
• HPACK decoder uses Table Find
• Pre-decompression may contain compressed DNS record pointer RData
• Fixed v13 incorrect Sec-WebSocket-Origin header
• When used in conjunction with Http2FrameCodec Http2MultiplexHandler, correctly handle the upgrade http2
• NPE repair caused by the re-entrance of call FlowControlHandler
• It allows you to disable the automatic sending PING ack
• If the agent is an instance of Http2SettingsReceivedConsumer, you can not throw an exception DecoratingHttp2ConnectionEncoder.consumeReceivedSettings
• Repair epoll spliceTo file descriptor
• HTTP / 2 Multiplex: even autoRead inbound data is false, the buffer can be correctly treated
• HTTP / 2: to ensure that each call is connected only upgrade once newStream () and use the correct handler

For more details, see the release notes:

https://netty.io/news/2019/07/24/4-1-38-Final.html