HAProxy FOP2 Backend with web socket

Hello All,

I’m trying to achieve an asterisk monitoring via HAProxy.
The FOP2 has a url path XX.XX.XX.XX/fop2 and have a websocket of tcp 4445.

When I configure it with the code below.

acl front_growth hdr_beg(host) -i growth.XXX.com
use_backend backend_growth if front_growth

backend backend_acl
server front_acl XX.XX.XX.XX:80 check

I can reach the FOP via dns however it prompts me with error could not connect to port 4445.

BTW:
We have multiple backend termination of servers.

Is there anyway for me to achieve this?

Thanks,
Pogi