sock

type Config struct {
	// TCPAddresses is a slice of the configured host:port pairs.
	TCPAddresses []TCPAddress
}

type ConfigKey struct{}

type TCPAddress struct {
	// Host is the host name for this listener.
	Host string
	// Port is the port number for this listener.
	Port int
}

type TCPConn interface {
	sys.File

	// Recvfrom only supports the flag sysfs.MSG_PEEK
	// TODO: document this like sys.File with known sys.Errno
	Recvfrom(p []byte, flags int) (n int, errno sys.Errno)

	// TODO: document this like sys.File with known sys.Errno
	Shutdown(how int) sys.Errno
}

type TCPSock interface {
	sys.File

	Accept() (TCPConn, sys.Errno)
}