irule not functioning

Kai.. Actually when end user from internet try topsuat.xyz.com/socket.io or topssit.xyz.com/socket.io or topstrg.xyz.com/socket.ion try they should get a CDN response code. in this case only topsstg is working. checked all pools are up and fine. i can see irule stats increasing. Didnt do a tcpdump as basic http connection is working but not when we have /socket.io. Kindly let me know if more information is needed. you have always been so supportive for me. Thanks in advance.