Netty 4.0 发布第 6 个 RC 版本，该版本值得关注的改进有：
SslHandler and JZlibEncoder now works correctly. (#1475 and #1471)
Android compatibility issues has been fixes. (#1451 and #1472)
voidPromise() now works correctly. (#1448)
SimpleChannelInboundHandler now releases the handled message by default. You can specify a boolean constructor parameter to revert to the old behavior (manual release). Note that other handler adapters do not release messages automatically. (#1446)
Making a connection attempt in NIO transport causes an IllegalStateException (#1467)
Various SPDY improvements from the folks at Twitter (#1456, #1463, #1476)
Less garbage production and efficiency fixes in SCTP transport (#1457)
项目主页：https://github.com/netty/netty/issues?milestone=56&state=closed
下载地址：https://github.com/netty/netty
来自:开源中国社区
