What means SYN_SENT status in a socket?

Recently we had some problems with a DDoS attack on some machines that execute workers, so I started the task of configuring a firewall (before that, we just removed the machine and created a new one, they are machines without a state).

[Python] Using temporary files

Working with lambda — jupyter, I saw the need to use cumbersome files through s3, which I had no intention of keeping in the file system, they were only temporary.

For that they are tempfile, which allows to create temporary files, with or without…

How to get the size of a WebElement

To get the size from a WebElement ( element from now ), you just need to access through the variable class size :

>> element.size
{'width': 100, 'height': 200}
>> element.size['width']
100
>> element.size['height']
200

How to mock a function from module

If you have something like:

var myFunction = function(...){
    ...
};

var myFunction2 = function(...){
    myFunction();
};

exports.myFunction = myFunction;
exports.myFunction2 = myFunction2;

Hide the option menu

Usually when you press the button of options of your cell phone (usually the left button), a menu comes out with the options available (sometimes it only comes out Settings) and this has to do with the menu of options that you want to provide to the application , But in some occasions you do…

Remove the black background in a Scroll

When you do a Scroll in a ListView, the background color turns black and that is not desired.

To change or remove that background color, you need to go into the XML where exists your ListView and add it the next attribute:

Searching inside of attributes

We want to search elements with a certain class, using this example:

<div class="class-1"></div>
<div class="class-1 class-2"></div>
<div class="class-1 class-2 class-3"></div>
<div class="class-2 class-11"></div>

Important commands in Docker that you should know

Recently we have some troubles with a machine running Docker with some services, Yep it’s a production machine using Docker, but there’s no problem, it’s a stateless service. The trouble was we can’t create more versions of the services (disk…

Remove borders between images in a ListView

Sometimes in a ListView (or normal image), doesn’t always can scale the image and when that happen, they remain a little spaces between the images, so if you want to avoid that, you need to add the next attribute to the ImageView:

android:adjustViewBounds="true"