1. Web
  2. Web APIs
  3. WebSocket
  4. bufferedAmount

WebSocket: bufferedAmount property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

Note: This feature is available in Web Workers.

The 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.

Value

An unsigned long.

Specifications

Specification
WebSockets
# ref-for-dom-websocket-bufferedamount1

Browser compatibility

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