private void ProcessReceivedBytes(byte[] buffer, int offset, int bytesTransferred) { while (bytesTransferred > 0) { if (!_handshakeCompleted) { var isCompleted = _handshakeFrame.Read(buffer, ref offset, ref bytesTransferred); if (!isCompleted) { return; } HandshakeReceived(this, new HandshakeFrameReceivedEventArgs(_handshakeFrame)); _handshakeFrame.ResetRead(); continue; } switch (_frameType) { case FrameType.Unknown: var flags = (FrameFlags)buffer[offset]; if ((flags & FrameFlags.ExtensionFrame) != 0) { _frameType = FrameType.Extension; } else if ((flags & FrameFlags.CommandFrame) != 0) { _frameType = FrameType.Command; } else { _frameType = FrameType.Message; } //do not increase offset, let the frame handle the flags. //only peek it to be able to switch state break; case FrameType.Message: var isCompleted = _inboundMessage.Read(buffer, ref offset, ref bytesTransferred); if (isCompleted) { MessageFrameReceived(_inboundMessage); _inboundMessage.ResetRead(); _frameType = FrameType.Unknown; } break; case FrameType.Extension: var isCompleted2 = _extensionFrameProcessor.Read(buffer, ref offset, ref bytesTransferred); if (isCompleted2) { _frameType = FrameType.Unknown; } break; } } }