eXenon

# -*- coding: utf-8 -*-
#test on python 3.4 ,python of lower version  has different module organization.
import http.server
from http.server import HTTPServer, BaseHTTPRequestHandler
import socketserver

PORT = 8080

Handler = http.server.SimpleHTTPRequestHandler

eXenon

# Generate a passphrase
openssl rand -base64 48 > passphrase.txt

# Generate a Private Key
openssl genrsa -aes128 -passout file:passphrase.txt -out server.key 2048

# Generate a CSR (Certificate Signing Request)
openssl req -new -passin file:passphrase.txt -key server.key -out server.csr \
    -subj "/C=FR/O=krkr/OU=Domain Control Validated/CN=*.krkr.io"

eXenon

# to run:
# > elixir --no-halt udp_server.exs
# to test:
# > echo "hello world" | nc -u -w0 localhost:2052
# > echo "quit" | nc -u -w0 localhost:2052

# Let's call our module "UDPServer"
defmodule UDPServer do
  # Our module is going to use the DSL (Domain Specific Language) for Gen(eric) Servers
  use GenServer

eXenon

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

eXenon

"""
Add copy to clipboard from IPython!
To install, just copy it to your profile/startup directory, typically:

    ~/.ipython/profile_default/startup/

Example usage:

    %clip hello world
    # will store "hello world"