Haproxy Fan-out

I want to do the following: say if i get a request to haproxy - it currently forwards to nodeA, i want to have it forwarded to nodeB also. I do not want to do load balancing. instead a fan-out. i want same request to be forwarded to multiple targets. I already tried using GitHub - haproxytech/spoa-mirror: Mirror HTTP requests using the HAProxy SPOP. The setup itself doesnt work.