WebSocket.bufferedAmount read-only property returns 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.
var bufferedAmount = aWebSocket.bufferedAmount;
|HTML Living Standard
|Living Standard||Initial definition|
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