MemoryStream _recvBuffer = new MemoryStream() ; _recvBuffer.Seek(0, SeekOrigin.Begin); _recvBuffer.SetLength(_recvBuffer.Capacity); byte[] buf = _recvBuffer.GetBuffer(); int offset = (int)_recvBuffer.Position; int size = (int)_recvBuffer.Length; var ar = _socket.BeginReceiveFrom(buf, offset, size, SocketFlags.None, ref ep, null, null);
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