Tcping on Ubuntu 14.04
1. Install hping3
apt-get install hping3
2. Type the command.
port -p
packet size -c
SYN -S
hping3 targethost -p 22 -c 4 -S
make x:Bind memory clean in UWP
Some tips here:
1. If memory has PropertyChangedHandler left, make sure the list does not have any item.
2. Call Page.Bindings.StopTracking() in Page_Unloaded event
3. If you use x:Bind with MvvmLight, and using RelayCommand, you need to set RelayCommand enity to null in Page_Unloaded.
4. For checking the page is completely released, use the launch mouse recorder to open page and back multiple times. It is important to ensure every PageBack&GC cleared all no used memories.
=============Important Update=============
Don’t use Bindings.StopTracking()! When switch pages quickly, some xaml components would not be released!
Use
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SimpleIoc.Default.Unregister<ViewModel>(key); |
Instead
Attached Property in StateTriggers
The demo code like the follow below:
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<VisualState x:Name="view720"> <VisualState.StateTriggers> <AdaptiveTrigger MinWindowWidth="720" /> </VisualState.StateTriggers> <VisualState.Setters> <Setter Target="Text.(Grid.ColumnSpan)" Value="3" /> <Setter Target="Text.(RelativePanel.Below)" Value="Image" /> </VisualState.Setters> </VisualState> |
So just add the parentheses around the attached property and it would be worked fine on StateTriggers.