HAPROXY向所有活动服务器发送请求

Question

如何向Haproxy的所有连接节点发送特定请求？

当前负载平衡逻辑

backend tanmay_socket
 option forwardfor
 balance leastconn
 timeout queue 500s
 timeout server 500s
 timeout connect 500s
 server node1 127.0.0.1:9001 weight 1 maxconn 10000 check inter 10000
 server node2 127.0.0.1:9002 weight 1 maxconn 10000 check inter 10000
 server node3 127.0.0.1:9003 weight 1 maxconn 10000 check inter 10000
 server node4 127.0.0.1:9004 weight 1 maxconn 10000 check inter 10000
 server node5 127.0.0.1:9005 weight 1 maxconn 10000 check inter 10000