I have been trying to understand how to use the Post Message AP (https://github.com/plotly/postMessage-API) to update a Shiny/Plotly app. I see many examples online with codepen that use plotly but I do not see any examples or steps that show how to use this with a on premise Shiny app. Essentially no embedded URL.
Does anyone have any idea or steps on how to do this or if this is even possible?