question about epoll

[Robin Dong]

Hi,
I am a linux user and I found some question when using epoll with EPOLLET.

My program's step:
1. create a socket (sfd) and connect to server2. create epoll (efd)3.
add socket descriptor (sfd) to epoll (efd) with flag EPOLLET4. get a
EPOLLOUT event through epoll_wait
after that, the program will nerver get a EPOLLOUT event because it
use EPOLLET mode (the same event will not be got twice)
BUT，when a message comes from server，the client socket will get a
event and this event contains EPOLLOUT and EPOLLIN, looks epoll_wait
return too much events than it should
My question is: Is this a designed mechanism or  a bug for epoll ?
Any reply will be appreciate.

-- 
--
Best Regard
Robin Dong
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/