System.Net.Sockets.ReceiveMessageOverlappedAsyncResult.SyncReleaseUnmanagedStructures C# (CSharp) Method

        internal void SyncReleaseUnmanagedStructures()
        {
            InitIPPacketInformation();
            ForceReleaseUnmanagedStructures();
        }

        public static SocketError ReceiveMessageFrom(Socket socket, SafeCloseSocket handle, byte[] buffer, int offset, int size, ref SocketFlags socketFlags, Internals.SocketAddress socketAddress, out Internals.SocketAddress receiveAddress, out IPPacketInformation ipPacketInformation, out int bytesTransferred)
        {
            ReceiveMessageOverlappedAsyncResult asyncResult = new ReceiveMessageOverlappedAsyncResult(socket, null, null);

            asyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);

            SocketError errorCode = SocketError.Success;

            bytesTransferred = 0;
            try
            {
                // This can throw ObjectDisposedException (retrieving the delegate AND resolving the handle).
                if (socket.WSARecvMsgBlocking(
                        handle.DangerousGetHandle(),
                        Marshal.UnsafeAddrOfPinnedArrayElement(asyncResult._messageBuffer, 0),
                        out bytesTransferred,
                        IntPtr.Zero,
                        IntPtr.Zero) == SocketError.SocketError)
                {
                    errorCode = (SocketError)Marshal.GetLastWin32Error();
                }
            }
            finally
            {
                asyncResult.SyncReleaseUnmanagedStructures();
            }

            socketFlags         = asyncResult.SocketFlags;
            receiveAddress      = asyncResult.SocketAddress;
            ipPacketInformation = asyncResult.IPPacketInformation;

            return(errorCode);
        }