System.Net.Sockets.SocketPal.TryCompleteAccept C# (CSharp) Метод

        public static unsafe bool TryCompleteAccept(SafeCloseSocket socket, byte[] socketAddress, ref int socketAddressLen, out IntPtr acceptedFd, out SocketError errorCode)
        {
            IntPtr fd;
            Interop.Error errno;
            int sockAddrLen = socketAddressLen;
            fixed (byte* rawSocketAddress = socketAddress)
            {
                try
                {
                    errno = Interop.Sys.Accept(socket, rawSocketAddress, &sockAddrLen, &fd);
                }
                catch (ObjectDisposedException)
                {
                    // The socket was closed, or is closing.
                    errorCode = SocketError.OperationAborted;
                    acceptedFd = (IntPtr)(-1);
                    return true;
                }
            }

            if (errno == Interop.Error.SUCCESS)
            {
                Debug.Assert(fd != (IntPtr)(-1), "Expected fd != -1");

                socketAddressLen = sockAddrLen;
                errorCode = SocketError.Success;
                acceptedFd = fd;

                return true;
            }

            acceptedFd = (IntPtr)(-1);
            if (errno != Interop.Error.EAGAIN && errno != Interop.Error.EWOULDBLOCK)
            {
                errorCode = GetSocketErrorForErrorCode(errno);
                return true;
            }

            errorCode = SocketError.Success;
            return false;
        }

            public static unsafe InnerSafeCloseSocket Accept(SafeCloseSocket socketHandle, byte[] socketAddress, ref int socketAddressLen, out SocketError errorCode)
            {
                int acceptedFd;

                if (!socketHandle.IsNonBlocking)
                {
                    errorCode = socketHandle.AsyncContext.Accept(socketAddress, ref socketAddressLen, -1, out acceptedFd);
                }
                else
                {
                    SocketPal.TryCompleteAccept(socketHandle, socketAddress, ref socketAddressLen, out acceptedFd, out errorCode);
                }

                var res = new InnerSafeCloseSocket();

                res.SetHandle((IntPtr)acceptedFd);
                return(res);
            }