Fix BrowserChannel close when is already closing #1169
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WebSockets can take a while for closing and the `WebSocket.close` is called when status is `WS_CLOSING`, an error is thrown. This situation can happen when the driver is being closed while session still releasing connections back to the pool or after a receive timeout while closing the session. BrowserChannel should wait for the original close socket finish whenever a new close request happens to avoid this kind of error and provides a graceful shutdown for driver and session.
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WebSockets can take a while for closing, and when
WebSocket.closeis called while the status isWS_CLOSING, an error is thrown.This situation can happen when the driver is being closed while sessions are still releasing connections back to the pool or after a receive timeout while closing the session.
BrowserChannel should wait for the original close socket to finish whenever a new close request happens to avoid this kind of error and provide a graceful shutdown for driver and session.