Ice Docs

Ice.WS.*

Ice.WS.MaxBufferedAmount=num (JavaScript only, in bytes)

This property limits the number of bytes queued for transmission by a WebSocket connection. When num is greater than zero, Ice sends data in chunks of at most num bytes and delays a chunk until sending it would keep the WebSocket's bufferedAmount at or below num.

Setting num to 0 or less disables this limit. The default value is 524288 bytes (512 KiB).