Adding/pasting your HTML codes on Google blogger.

Thanks to http://hilite.me/

Paste your code here http://hilite.me/, it just converts your code to html highlighted format. Then you can copy paste it in compose mode and click on preview to see the magic!

<?php
    require_once __DIR__.'/google-api-php-client-2.1.1/vendor/autoload.php';
    date_default_timezone_set('asia/kolkata');
    session_start();

    // to find localhost and production server https
    if ($_SERVER['SERVER_NAME'] == "localhost") {
        $protocol = "http://";
    }else{
        $protocol = "https://";
    }
    $redirect_uri = $protocol . $_SERVER['HTTP_HOST'] . "/index.php";
    $client = new Google_Client();
    $client->setAuthConfigFile('key.json');
    $client->setRedirectUri($protocol . $_SERVER['HTTP_HOST'] . "/index.php");
    $client->setScopes('email'); // You want to retrieve email and domain name
    

// on logout
    if (isset($_REQUEST['logout'])) {
      unset($_SESSION['id_token_token']);
    }

// once you get code after auth success
    if (isset($_GET['code'])) {
      $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
      $client->setAccessToken($token);
      $_SESSION['id_token_token'] = $token;
      header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
    }
    if ( !empty($_SESSION['id_token_token']) && isset($_SESSION['id_token_token']['id_token']) ) {
      $client->setAccessToken($_SESSION['id_token_token']);
    } else {
      $authUrl = $client->createAuthUrl();
    }
    // success
    if ($client->getAccessToken()) {
      $token_data = $client->verifyIdToken();

// print all the data related after auth
      print_r($token_data)
    }
?>

 

PHP asynchronous Http call using curl,shell_exec

?>php

for ($i = 0; $i < 100; $i++){

  $cmd = 'nohup curl -H "Authorization: Basic yourRandomIOhere==" -H "Content-Type:        application/json" -X POST -d "{yourjson: "value"}" https://example.com/Message/ > status.out &';

  shell_exec($cmd);

}

print 'job done!';

?>

here:
100 : No of times you want to make this call
nohup:  to run in background
POST: http method, POST or GET
Authorization and content type is your option.

SIP,RTP capture with tshark and TCPdump

Tshark command to capture both SIP and RTP on media servers

This is useful if you don't know on which port SIP and UDP packetes comes from and can dump in pcap

tshark -i eth0 -w capture.pcap -f "(udp port sip) or (udp[1] & 1 != 1 && udp[3] & 1 != 1 && udp[8] & 0x80 == 0x80 && length < 250)"

-i  : specify your interface, If not use "any" to capture on all interfaces
-w : file to save


TCPdump to capture SIP on specific port! 
tcpdump -nqt -s 0 -A -i eth0 port 5060

Grep both SIP and UDP at same time.
tcpdump -n -i eth0 | grep 'SIP\|UDP'

Javascript tips and tricks

You can access a HTML element id by

Type the id name directly in broswer console eg, my div id = makeCall
makeCall
Suppose if id with '_' , like make_Call it won't work

Use getElement, Works in all case
document.getElementById('makeCall')

or Query selector, it doesn't like id with numbers at start :P
document.querySelector('#makeCall')










If you want to use script or a function in HTML form action you can use 'javascript:myFunction();'



action="javascript:myFunction();

Javascript access functions and variables inside Jquery

(function($) {

$.fn.mainFunction = new function (){

var testVal = "Test";

this.test = function(){

console.log('inside test');

}

}

}(jQuery));

Now you can access testVal and mainFunction.test()

Moniter/Listen/Load test http request Linux

There is a simple tool tcpflow to capture the actual headers coming to your host

tcpflow port 80

To be more specific use.

tcpflow -p -c -i eth0 port 80 | grep -oE '(GET|POST|HEAD) .* HTTP/1.[01]|Host: .*'

Capture only number of hits: 

tcpflow -p -c -i eth0 port 80 | grep 'Date'

Use ab tool (apache2-tools) to benchmark the load on apache or any other http server like pyhton,node etc

ab -n 1000 -c 10 http:ipaddresss:port/                    / is important after port number 

-n number of request to send

-c total request to send per sec / concurrent req

You can use rate limit to allow number of connection per sec/min/hr with --limit module in IPTABLES

Iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m limit --limit 10/second --limit-burst 10 -j ACCEPT

Package management "apt-get" tips

To get versions of a package Ubuntu/Debain
apt-cache showpkg <packagename>

you'll get available versions or if you know the specific version use below
apt-get install <packagename>=<version>

To remove binaries, Config files and more use
apt-get remove --purge <packagename>

If you want to remove its dependencies as well use below cmd unless its not needed by any other pkg
apt-get autoremove