WebSocket bufferedAmount after send
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
onopen
PASS ws.bufferedAmount is 5
PASS ws.bufferedAmount is 37
PASS ws.bufferedAmount is 42
PASS ws.bufferedAmount is 45
onclose
PASS ws.bufferedAmount is 0
PASS successfullyParsed is true
TEST COMPLETE