System.Net.Sockets.ConnectOverlappedAsyncResult.PostCompletion C# (CSharp) Method

        internal override object PostCompletion(int numBytes)
        {
            SocketError errorCode = (SocketError)ErrorCode;
            Socket socket = (Socket)AsyncObject;

            if (errorCode == SocketError.Success)
            {
                // Set the socket context.
                try
                {
                    errorCode = Interop.Winsock.setsockopt(
                        socket.SafeHandle,
                        SocketOptionLevel.Socket,
                        SocketOptionName.UpdateConnectContext,
                        null,
                        0);
                    if (errorCode == SocketError.SocketError)
                    {
                        errorCode = (SocketError)Marshal.GetLastWin32Error();
                    }
                }
                catch (ObjectDisposedException)
                {
                    errorCode = SocketError.OperationAborted;
                }

                ErrorCode = (int)errorCode;
            }

            if (errorCode == SocketError.Success)
            {
                socket.SetToConnected();
                return socket;
            }

            return null;
        }
    }