Hand the browser the session facts only the server knows

The Shiny session token cannot be read in JavaScript, so the server pushes it once at session start; the client then stamps it on every queued row (the session column of ms_log_header()). Call it at the top of the server function, before any ms_track() call, so no event is written without it.

Usage

ms_track_session(session)

Arguments

session

the Shiny session object

Value

the sent list, invisibly

Details

The token is authoritative, the IP is only a fallback: behind shiny-server a session sees 127.0.0.1, so an ip already baked into the page by ga_js() wins and this one is ignored. Without that rule the websocket's useless address would silently overwrite the good one a moment after the page supplied it.

Examples

if (FALSE) { # \dontrun{
server <- function(input, output, session) {
  msens::ms_track_session(session)
  ...
}
} # }