snehesht

# Coroutines Demo using asyncio

import asyncio

@asyncio.coroutine
def waiting(r):
    print("hello from waiting -", r)
    yield from asyncio.sleep(2)
    print("bye from waiting -", r)
    return r

snehesht

#http://geekgirl.io/concurrent-http-requests-with-python3-and-asyncio/

Concurrent HTTP Requests with Python3 and asyncio

My friend who is a data scientist had wipped up a script that made lots (over 27K) of queries to the Google Places API. The problem was that it was synchronous and thus took over 2.5hours to complete.

Given that I'm currently attending Hacker School and get to spend all day working on any coding problems that interests me, I decided to go about trying to optimise it.

I'm new to Python so had to do a bit of groundwork first to determine which course of action was best.

snehesht

/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  */
/*  AES Counter-mode implementation in JavaScript       (c) Chris Veness 2005-2014 / MIT Licence  */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  */

/* jshint node:true *//* global define, escape, unescape, btoa, atob */
'use strict';
if (typeof module!='undefined' && module.exports) var Aes = require('./aes'); // CommonJS (Node.js)


/**

snehesht

// Go to menue:
// find->find in files
// Switch on reg_ex button
// Find:
^(.*)$
// Where:
c:\your_folder\,*.php,*.phtml,*.js,*.inc,*.html, -*/folder_to_exclude/*

// Then click on the find button
// Be careful to not click on Replace!!!

snehesht

Optimizing HTTPS on Nginx  https://bjornjohansen.no/optimizing-https-nginx

Now that you have secured Nginx with HTTPS and enabled SPDY, it’s time to improve both the security and the performance of the server.

Nginx out-of-the-box is already performing quite well, and as far as I know, is the only web server with forward secrecy (FS) enabled by default (more on FS support in servers and clients here). There is still a few things we can configure to make Nginx faster and more secure.

NOTE: All of the configuration directives explained here will be for your server block in your Nginx config.

Step 1: Connection credentials caching

snehesht

Src : http://stackoverflow.com/questions/17590816/kernel-based-linux-data-relay-between-two-tcp-sockets

# With Nginx
                TCP Connections load-balancing 

# With HAProxy
                     Using Linux TCP Splicing with HAProxy
                           Willy Tarreau <w@1wt.eu>
                                - 2007/01/06 -

snehesht

#!/usr/bin/python

import sys		#for cmd line argv

#take command line args as the input string
input_string = sys.argv
#remove the program name from the argv list
input_string.pop(0)

#convert to google friendly url (with + replacing spaces)

snehesht

http://www.lexev.org/en/2013/python-logging-every-day/

Python logging for every day
Gist
When writing a small python program or script, it is sometimes needed to output debug message or maybe event. It is known, that python has logging module exactly for that purpose. But in my case usually such thing happens: it is lack of time and hands just writes print instead of logging, because i can't remember all those complicated logging settings. But then, if script is launched often or i must provide it to customer, i have to replace all prints with logging, because it is better to log all messages to file. So, not to keep in my head all these settings, i am writing this post.

Logging requirements will be the following:
All logs must be written to file and in console (duplicated)
Log file is rotated (not exceed specified size)
All third party libraries logs are also handled

snehesht

snehesht

https://github.com/SoftEtherVPN/SoftEtherVPN/
http://www.softether.org/

http://www.softether-download.com/files/softether/v4.18-9570-rtm-2015.07.26-tree/Linux/SoftEther_VPN_Server/32bit_-_ARM_EABI/

sudo apt-get install libreadline-dev libssl-dev

git clone https://github.com/SoftEtherVPN/SoftEtherVPN.git
cd SoftEtherVPN
./configure