hao guo

hi @szetszwo @captainzmc , can you help review this patch?

@szetszwo This PR is implemented using buffer copy, and then I'll turn on another PR to optimize for zero copy https://issues.apache.org/jira/browse/HDDS-6133

Added the enable Stream configuration on the Gateway side. Please take a look. @szetszwo

> Are the crypto changes related to S3Gateway? Could we separated it out since this is very big? Hi, @szetszwo I can work this in https://issues.apache.org/jira/browse/HDDS-5892

Hi @szetszwo https://github.com/apache/ozone/pull/3569 has been merged into master, please rebase HDDS-4454, I will modify this PR later, thanks.

This version has been running in my environment for a long time without a client Timeout exception Hi, @szetszwo Can you look at this PR

> @guohao-rosicky , is this a bug fix? Or just a refactoring? hi, @szetszwo I changed the description of this PR 1. Bug fix timeout exception. 2. Refactor the code...

@szetszwo Please take a look.

@szetszwo modified. I removed `streams.remove ()` from `readImpl`, Please take a look

@szetszwo in `org.apache.ratis.datastream.DataStreamTestUtils#assertHeader` `stateMachine.getSingleDataStream` in null, I found that it will be added at `stateMachine.stream`, I wonder why not get it. Can you help me find it.