/// <summary>
/// Reads the complete next text message from the websocket
/// </summary>
/// <returns>The text message, or null if socket was closed</returns>
private async Task <string> ReceiveNextMessageAsync(IClientWebSocketProxy ws)
{
_receiveStream.Position = 0;
WebSocketReceiveResult result;
do
{
result = await ws.ReceiveAsync(new ArraySegment <byte>(_readBuffer), _cancellationToken.Token);
if (result == null || result.Count == 0 || result.MessageType == WebSocketMessageType.Close)
{
return(null);
}
if (ws.CloseStatus.HasValue)
{
return(null);
}
Debug.Assert(result.MessageType == WebSocketMessageType.Text);
if (result.EndOfMessage && _receiveStream.Position == 0)
{
return(Encoding.UTF8.GetString(_readBuffer, 0, result.Count)); // No need to use memory stream
}
_receiveStream.Write(_readBuffer, 0, result.Count);
}while (!result.EndOfMessage);
return(Encoding.UTF8.GetString(_receiveStream.GetBuffer(), 0, (int)_receiveStream.Position));
}
