WFM and HA CS-Proxy

[topper]

Hello,
in properties of WFM Web application(file ConfigServer.properties) i need to specify Configuration Server. Format of this file is:
Host = config_db_server_name
Port = config_db_server_port
ApplicationName = MyWFMWebServerAppName
where MyWFMWebServerAppName is a name of my WFM Web app in CME.

My implementation has one ConfigServer (central site) and HA Configaruation Proxy in hot stand-by (my site), so i need to configure WFM Web for work with HA CS-Proxy. But in configuration file (ConfigServer.properties) i can specify only one host (only one CS-Proxy in cluster), and when i made switchover of my CS-Proxies, WFM Web had lost connectiont to configuration.

So, how i can specify WFM Web to work with HU-cluster but not with one standalone?

PS i have an idea to use Cisco Content Switch for this problem. Does anyone made this architecture?