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How many system resources will be held for keeping 1,000,000 websocket open? [closed]
...ebSockets since WebSockets are fundamentally long-lived TCP sockets with a HTTP-like handshake and minimal framing for messages.
The real question is: could a single server handle 1,000,000 simultaneous socket connections and what server resources would this consume? The answer is complicated by se...
How can I create a table with borders in Android?
...l
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape= "rectangle" >
<solid android:color="#000"/>
<stroke android:width="1dp" android:color="#ff9"/>
</shape>
layout/my_table.x...
Understanding colors on Android (six characters)
...o 55.
Enter your decimal value in a decimal-to-hexadecimal converter, like http://www.binaryhexconverter.com/decimal-to-hex-converter, and convert your values.
If you only get back a single value, prefix it with a zero. For example, if you're trying to get 5% opacity and you're going through this pr...
Java: random long number in 0
... see @mawaldne's answer), or implement your own nextLong(n).
According to https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Random.html nextInt is implemented as
public int nextInt(int n) {
if (n<=0)
throw new IllegalArgumentException("n must be positive");
if ...
Offset a background image from the right using CSS
... fine.
See Can I use for details on the supported browsers.
Used source: http://tanalin.com/en/blog/2011/09/css3-background-position/
Update:
This feature is now supported in all major browsers, including mobile browsers.
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How to use ADB to send touch events to device using sendevent command?
...same position:
adb shell input tap 757 1694
More info can be found at:
https://source.android.com/devices/input/touch-devices.html
http://source.android.com/devices/input/getevent.html
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i...
converting drawable resource image into bitmap
...ce ic_action_back with your drawable file name.
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/ic_action_back"
android:tint="@color/color_primary_text" />
Now, you can use it with Resource ID, R.id.filename.
...
Pure virtual destructor in C++
... crash.
Edit: fixing the declaration to be more conformant, compiled with http://www.comeaucomputing.com/tryitout/
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How to show vertical line to wrap the line in Vim?
...
Several answers here http://vim.wikia.com/wiki/Highlight_long_lines simple autocommand
:au BufWinEnter * let w:m1=matchadd('Search', '\%<81v.\%>77v', -1)
:au BufWinEnter * let w:m2=matchadd('ErrorMsg', '\%>80v.\+', -1)
...
java.net.UnknownHostException: Invalid hostname for server: local
...contained whitespace. In writing a proxy server the host was obtained from HTTP headers with the use of split(":") by semicolons for the HOST header. This left whitespace, and causes the UnknownHostException as a host with whitespace is not a valid host. Doing a host = host.trim() on the String host...