sendfile support in Netty?

[Jay Kreps]

Hi All,

NIO makes it possible to directly transfer data between os pagecache and a
socket using the FileChannel.transferTo (and transferFrom) calls. This is a
very big performance boost, as it makes use of the sendfile system call and
thus avoids copying the data in and out of user space. Is there any way to
make use of this optimization in Netty?

What I am looking for is some way to get ahold of the underlying
SocketChannel so I can pass it to the transferTo call.

Thanks!

-Jay
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