netpoll

see https://pkg.go.dev/github.com/mailru/easygo/netpoll for details

Overview 

Package netpoll provides a portable interface for network I/O event notification facility.

Its API is intended for monitoring multiple file descriptors to see if I/O is possible on any of them. It supports edge-triggered and level-triggered interfaces.

To get more info you could look at operating system API documentation of particular netpoll implementations:

• epoll on linux;
• kqueue on bsd;

The Handle function creates netpoll.Desc for further use in Poller's methods:

desc, err := netpoll.Handle(conn, netpoll.EventRead | netpoll.EventEdgeTriggered)
if err != nil {
	// handle error
}

The Poller describes os-dependent network poller:

poller, err := netpoll.New(nil)
if err != nil {
	// handle error
}

// Get netpoll descriptor with EventRead|EventEdgeTriggered.
desc := netpoll.Must(netpoll.HandleRead(conn))

poller.Start(desc, func(ev netpoll.Event) {
	if ev&netpoll.EventReadHup != 0 {
		poller.Stop(desc)
		conn.Close()
		return
	}

	_, err := ioutil.ReadAll(conn)
	if err != nil {
		// handle error
	}
})

Currently, Poller is implemented only for Linux.