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def compute_pi(n):
  """
  This function calculates the value of pi to 'n' number of decimal places
  Args:
  n:   precision(Decimal places)
  Returns:
  pi:   the value of pi to n-decimal places
  """
  
  decimal.getcontext().prec = n + 3

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import sys

def calcPi():
    q, r, t, k, n, l = 1, 0, 1, 1, 3, 3
    while True:
        if 4*q+r-t < n*t:
            yield n
            nr = 10*(r-n*t)
            n  = ((10*(3*q+r))//t)-10*n
            q  *= 10

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import asyncio
import threading
import random


def thr(i):
    # we need to create a new loop for the thread, and set it as the 'default'
    # loop that will be returned by calls to asyncio.get_event_loop() from this
    # thread.
    loop = asyncio.new_event_loop()

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#!/usr/bin/env python

#this is mostly from:
#http://code.activestate.com/recipes/577187-python-thread-pool/

from Queue import Queue
from threading import Thread, Event
from sys import stdout, stderr
from time import sleep

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import ftplib
import socket
import socks  # socksipy (https://github.com/mikedougherty/SocksiPy)


class FTP(ftplib.FTP):
    def __init__(self, host='', user='', passwd='', acct='',
                 timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
                 proxyconfig=None):
        """Like ftplib.FTP constructor, but with an added `proxyconfig` kwarg

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"""
Threaded Load-balancing Broker
"""

from __future__ import print_function

from threading import Thread

import zmq

miadz

To send the ip addres of the client/webbrowser to the server/webserver behind it there are a few options:
 1- option forwardfor
 2- send-proxy
 3- source 0.0.0.0 usesrc clientip

1- option forwardfor
This is an easy option to configure in haproxy, it does require that http layer7 processing is used 'mode http' and the webserver/ webapplication that wants to log or use the ip of the client must use the http-header 'X-Forwarded-For' to read the clientip.

2- send-proxy / send-proxy-v2 / send-proxy-*
This is can be used both with mode tcp and http, it does however require that the server also understands the proxyprotocol. Some applications have added support for this protocol which adds a few bytes with ip information before the actual request. 

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# TCP Port Forwarding via Socks5 Socket
# Original Author : WangYihang <wangyihanger@gmail.com> (for port forwarding)
#                   (As gist: <https://gist.github.com/WangYihang/e7d36b744557e4673d2157499f6c6b5e>)
# Changes         : NeoAtlantis <aurichalka@gmail.com> 
#                   (adapted to pySocks, argparse for CLI invokation, encryption, etc.)

import argparse

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import socket
import sys
from tcp import *

def handler(data):
	print(data)
	return input(">> ")


if __name__ == '__main__':

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# TCP Port Forwarding (Reverse Proxy)
# Author : WangYihang <wangyihanger@gmail.com>
# Requires Python 3.6 or above.

import socket
import threading
import sys