Shiny Server Pro - Open Source

I wanted to ask if the open source Shiny and Shiny Server Pro have the same exact codebase and the only difference is that for some features in the open source version are disabled and require license to be enabled.

I have the same question regarding RServer IDE.

Here I tried to refer to, but just wonder if the pro version will never disconnect from server?

May I know if the shiny server pro will never disconnect from server? I am trying to use RStudio to deploy a shiny app which can conducting real time trading activities without any interruption...