//async void is bad but there is no other option in this scenario.
//It is equivalent to event handler, caller is not interested in task
private async void StartListening()
{
var receiveBuffer = new byte[4096 * 20];
while (_webSocket.State == WebSocketState.Open)
{
var totalBytes = new byte[0];
WebSocketReceiveResult result;
do
{
result = await _webSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
if (result.MessageType == WebSocketMessageType.Close)
{
await _webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, string.Empty, CancellationToken.None);
}
else
{
var existingSize = totalBytes.Length;
totalBytes = new byte[existingSize + result.Count];
Buffer.BlockCopy(receiveBuffer, 0, totalBytes, existingSize, result.Count);
}
} while (!result.EndOfMessage);
var payLoad = _deserializer.DeserializePayload(totalBytes);
_dataStream.OnNext(payLoad);
}
}