streaming

type Args struct {
	Stream Stream
}

type Result struct {
	Stream Stream
}

type Stream interface {
	// Context the stream context.Context
	Context() context.Context
	// RecvMsg recvive message from peer
	// will block until an error or a message received
	// not concurrent-safety
	RecvMsg(m interface{}) error
	// SendMsg send message to peer
	// will block until an error or enough buffer to send
	// not concurrent-safety
	SendMsg(m interface{}) error
	// not concurrent-safety with SendMsg
	io.Closer
}