Troubleshoot Starting proxy http_proxy: cannot bind socket

[Aaron Rosenthal]

I don't know how to troubleshoot this issue, any suggestions would be  
helpful. Thanks

[r...@lb1 haproxy-1.3.17]# /etc/init.d/haproxy start
Starting HAproxy: [ALERT] 161/110810 (22011) : Starting proxy  
http_proxy: cannot bind socket
                                                           [FAILED]