nl_tokens: The number of bytes of data that have been queued using calls to send () but not yet transmitted to the network . This value resets to zero once all queued data has been sent . This value does not reset to zero when the connection is closed ; if you keep calling send () this will continue to climb . Read only
pl_tokens: function ( ) { var bytes = this . _messageQueue . reduce ( function ( acc , message ) { if ( typeof message === 'string' ) { acc += message . length ; // not byte size
   } else if ( message instanceof Blob ) { acc += message . size ; } else { acc += message . byteLength ; } return acc ; } , 0 ) ; return <mask> + ( this . _ws ? this . _ws . bufferedAmount : 0 ) ; }