How to receive source IP address?

I have two rdp servers. Tcp rdp traffic.
Soft
client mstsc.exe + win 2008 server

Ubuntu 16.04.4 LTS
HA-Proxy version 1.6.3 2015/12/25

I use haproxy to provide fault tolerance.


I would like to do as on the second part of the picture.
Is this possible?