Hand the browser the session facts only the server knows

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

Usage

cc_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 cc_ga_js() wins and this one is ignored.

Examples

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