Thanks for replys @amy.blais
Today i tried to test for Mattermost Websocket…
I modified SiteURL like http://mm.domain.com and WebsocketURL like ws://mm.domain.com:8065
so, today i saw debug log like below…
websocket.authTicker: did not authenticate ip=xxxxxx:24370
websocket.read: closing websocket for userId= error=read tcp 40.1.4.19:8065->40.60.191.122:56424: use of closed network connection
and i saw a lot of “websocket closed” and “websocket re-established” in browser console
Thanks