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

        internal static void Validate(int count, int receiveBufferSize, int sendBufferSize, bool isServerBuffer)
        {
            Debug.Assert(receiveBufferSize >= MinReceiveBufferSize,
                "'receiveBufferSize' MUST be at least " + MinReceiveBufferSize.ToString(NumberFormatInfo.InvariantInfo) + ".");
            Debug.Assert(sendBufferSize >= MinSendBufferSize,
                "'sendBufferSize' MUST be at least " + MinSendBufferSize.ToString(NumberFormatInfo.InvariantInfo) + ".");

            int minBufferSize = GetInternalBufferSize(receiveBufferSize, sendBufferSize, isServerBuffer);
            if (count < minBufferSize)
            {
                throw new ArgumentOutOfRangeException("internalBuffer",
                    SR.Format(SR.net_WebSockets_ArgumentOutOfRange_InternalBuffer, minBufferSize));
            }
        }

        public void SetBuffer(int receiveBufferSize, int sendBufferSize, ArraySegment <byte> buffer)
        {
            ThrowIfReadOnly();
            WebSocketHelpers.ValidateBufferSizes(receiveBufferSize, sendBufferSize);
            WebSocketHelpers.ValidateArraySegment(buffer, "buffer");
            WebSocketBuffer.Validate(buffer.Count, receiveBufferSize, sendBufferSize, false);

            this.receiveBufferSize = receiveBufferSize;
            this.sendBufferSize    = sendBufferSize;

            // Only full-trust applications can specify their own buffer to be used as the
            // internal buffer for the WebSocket object.  This is because the contents of the
            // buffer are used internally by the WebSocket as it marshals data with embedded
            // pointers to native code.  A malicious application could use this to corrupt
            // native memory.
            if (AppDomain.CurrentDomain.IsFullyTrusted)
            {
                this.buffer = buffer;
            }
            else
            {
                // We silently ignore the passed in buffer and will create an internal
                // buffer later.
                this.buffer = null;
            }
        }