flush

Flushes all pending messages in the WebSocket session.

This method launches a coroutine that suspends until all previously sent messages are written to the network.

• It can be called at any time, even after calling disconnect.

• If the connection is already terminated, it may return immediately.

• This does not guarantee that the remote peer has received the messages.

• May throw exceptions or be cancelled if the session fails during the flush.

Example usage:

wsManager.flush()