can Mysql Proxy have master/slave function?

[nguyen nguyen]

I deloying an Mysql Cluster System. (use 3 mysql client 127.0.0.1:3004 127.0.0.1:3005 127.0.0.1:3007) and I use Mysql Proxy(127.0.0.1:4040) to load balancer to mysql cluster.
But in scenario :
In mysql cluster, I try down 1 mysql client , and client query another mysql client.and when restart mysql client, it updated data.
But with mysql proxy, 1 mysql client is down, mysql proxy cant redirect to another mysql client.and client cannot query anything.

So can mysql proxy can master/slave function or auto direct to live mysql client?

Please help me