https://tools.ietf.org/html/rfc6455#section-5.5.3
https://tools.ietf.org/html/rfc6455#section-5.5.3

A Pong frame sent in response to a Ping frame must have identical
   "Application data" as found in the message body of the Ping frame
   being replied to.

hongling0/skynet,cloudwu/skynet,ag6ag/skynet,ag6ag/skynet,sanikoyes/skynet,icetoggle/skynet,JiessieDawn/skynet,sanikoyes/skynet,xcjmine/skynet,cloudwu/skynet,korialuo/skynet,pigparadise/skynet,wangyi0226/skynet,bigrpg/skynet,bigrpg/skynet,pigparadise/skynet,icetoggle/skynet,bigrpg/skynet,korialuo/skynet,cloudwu/skynet,xjdrew/skynet,JiessieDawn/skynet,sanikoyes/skynet,hongling0/skynet,ag6ag/skynet,pigparadise/skynet,xjdrew/skynet,hongling0/skynet,icetoggle/skynet,korialuo/skynet,JiessieDawn/skynet,wangyi0226/skynet,xjdrew/skynet,xcjmine/skynet,xcjmine/skynet,wangyi0226/skynet