Merge #1822 into sdk602patch0911 from refs/changes/1822/head

Code review from snickersun@163.com

* refs/changes/1822/head: (2 commits)
  添加socket poll select 函数支持
  Merge branch 'sdk602patch0911' of codeup.aliyun.com:64191456b9581d62e8f81ac0/FD...

Signed-off-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Reviewed-by: Caisking <3449750381@qq.com>
Reviewed-by: 罗正 <1732036298@qq.com>
Reviewed-by: aliyun8003852482 <1224667075@qq.com>
Reviewed-by: snickersun@163.com <accounts_62b90f7fcf51ade33b6f628e@mail.teambition.com>
Reviewed-by: aliyun6865282430 <1624952103@qq.com>
Merged-by: aliyun8003852482 <1224667075@qq.com>
link: https://codeup.aliyun.com/64191456b9581d62e8f81ac0/FD230/change/1822