dlts server Listener.Accept may block due to individual connection timeouts.

[kitestar]

func (l *listener) Accept() (net.Conn, error) {
	c, raddr, err := l.parent.Accept()
	if err != nil {
		return nil, err
	}
	return Server(c, raddr, l.config)
}

Server() ---> createConn ---> handshake use synchronous handshaking

If one connection's handshake times out, it directly affects the next connection's accept.

Why not use an asynchronous handshake when accepting a connection?

[daenney]

This is a duplicate of #279. It's mostly just an oversight when the API was created, and something we'll resolve eventually.