Closing connection on gc()

[DavorJ]

I wonder why there is no public method similar to the following:

finalize = function() {
  self$close()
}

During gc() the finalize() function would be executed.

Is closing the connection this way left out on purpose for some reason? I am not sure the underlying C code is closing the connection during destruction.

[DavorJ]

Further more, it is stated in the vignette that:

As long as a WebSocket object has an open connection, it will not be eligible for garbage collection [...].

But it seems you don't even need an open connection:

WebSocketExt <- R6::R6Class(
  classname = 'WebSocketExt',
  inherit = websocket::WebSocket,
  public = list(
#    initialize = function(...) {},
    finalize = function() {
      message('Cleaning up.')
      self$close()
    }
  )
)

wse <- WebSocketExt$new(.URI, autoConnect = FALSE)
rm(wse)
gc()

In this case, gc() doesn't destruct the object. finalize() will only be executed after ending the R session. I don't think this is as intended, no?

PS Tested on R 3.6.3 and 4.0.5.