conn.readBuf.Write([]byte(body))

	done := make(chan bool)

	readBufLen := func() int {
		conn.readMu.Lock()
		defer conn.readMu.Unlock()
		return conn.readBuf.Len()
	}

	ls := &oneConnListener{conn}
	go Serve(ls, HandlerFunc(func(rw ResponseWriter, req *Request) {
		defer close(done)
		if bufLen := readBufLen(); bufLen < len(body)/2 {