Watcher should not be limited to net.Conn, file descriptor maybe better

[shizhx]

I love Linux, everything is fd in Linux, so I can watch network connection, file, event fd, timer fd, signal fd etc. in one epoll/select loop.

I am designing a proxy program which transporting data between network connection and tun device, it is a simple feature in C language, but I cannot find a good golang framework to do it. evio and gnet are only focus on server side, gaio is the best match one.

But gaio.Watcher only allow net.Conn parameter(I know golang can wrap os.File with net.Conn), how about event fd, timer fd and signal fd?

[xtaci]

good idea