System.Net.WebSockets.WebSocketBuffer.IsPinnedSendPayloadBuffer C# (CSharp) Method

        internal bool IsPinnedSendPayloadBuffer(Interop.WebSocket.Buffer buffer,
            WebSocketProtocolComponent.BufferType bufferType)
        {
            if (_sendBufferState != SendBufferState.SendPayloadSpecified)
            {
                return false;
            }

            IntPtr bufferData;
            uint bufferSize;

            UnwrapWebSocketBuffer(buffer, bufferType, out bufferData, out bufferSize);

            long nativeBufferStartAddress = bufferData.ToInt64();
            long nativeBufferEndAddress = nativeBufferStartAddress + bufferSize;

            return nativeBufferStartAddress >= _pinnedSendBufferStartAddress &&
                nativeBufferEndAddress >= _pinnedSendBufferStartAddress &&
                nativeBufferStartAddress <= _pinnedSendBufferEndAddress &&
                nativeBufferEndAddress <= _pinnedSendBufferEndAddress;
        }