We are building our first bot for Hangouts Chat to support JIRA Server (https://github.com/seibert-media/hangouts-jira-bot) and I had to notice that Events in Google PubSub only get sent when the bot receives a direct message or get's mentioned in a room, but not for every room message. Is this intended behavior or are we doing something wrong.
This is the current intended behavior for Hangouts Chat. There is no way to have any sort of RTM socket, so everything in Hangouts Chat is currently event driven by @mentioning or dming a bot.