struct tls_uv_connection_state_private_members {
	server_state_t* server;
	uv_tcp_t* handle;
	SSL *ssl;
	BIO *read, *write;
	struct {
		tls_uv_connection_state_t** prev_holder;
		tls_uv_connection_state_t* next;
		int in_queue;
		size_t pending_writes_count;
		uv_buf_t* pending_writes_buffer;
	} pending;
	size_t used_buffer, to_scan;
	int flags;
};

#define RESERVED_SIZE (64 - sizeof(struct tls_uv_connection_state_private_members))
#define MSG_SIZE (8192 - sizeof(struct tls_uv_connection_state_private_members) - 64 - RESERVED_SIZE)


// This struct is exactly 8KB in size, this
// means it is two OS pages and is easy to work with
typedef struct tls_uv_connection_state {
	struct tls_uv_connection_state_private_members;
	char reserved[RESERVED_SIZE];
	char user_data[64]; // location for user data, 64 bytes aligned, 64 in size
	char buffer[MSG_SIZE];
} tls_uv_connection_state_t;

static_assert(offsetof(tls_uv_connection_state_t, user_data) % 64 == 0, "tls_uv_connection_state_t.user should be 64 bytes aligned");
static_assert(sizeof(tls_uv_connection_state_t) == 8192, "tls_uv_connection_state_t should be 8KB");