\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{k0ncept}
\pdfinfo{
  /Title (blackhat-python.pdf)
  /Creator (Cheatography)
  /Author (k0ncept)
  /Subject (BlackHat Python Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
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\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{BlackHat Python Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{k0ncept} via \textcolor{DarkBackground}{\uline{cheatography.com/30092/cs/8916/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}k0ncept \\
  \uline{cheatography.com/k0ncept} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 25th August, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{1.55618 cm} x{1.51041 cm} x{1.51041 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Sockets}}  \tn
% Row 0
\SetRowColor{LightBackground}
s = \seqsplit{socket.socket} \seqsplit{(socket\_family}, socket\_type, protocol=0) & \seqsplit{socket\_family:} This is either AF\_UNIX or AF\_INET, as explained earlier.  \{\{nl\}\}\{\{nl\}\}socket\_type: This is either SOCK\_STREAM or SOCK\_DGRAM.  \{\{nl\}\}\{\{nl\}\}protocol: This is usually left out, defaulting to 0. & AF\_INET: TCPv4 or Hostname \{\{nl\}\}\{\{nl\}\} SOCK\_DGRAM: UDP \{\{nl\}\}\{\{nl\}\} \seqsplit{SOCK\_STREAM:} TCP \tn 
% Row Count 16 (+ 16)
% Row 1
\SetRowColor{white}
Domain & The family of protocols that is used as the transport mechanism. These values are constants such as AF\_INET, PF\_INET, PF\_UNIX, PF\_X25, and so on. &  \tn 
% Row Count 28 (+ 12)
% Row 2
\SetRowColor{LightBackground}
Type & The type of \seqsplit{communications} between the two endpoints, typically SOCK\_STREAM for \seqsplit{connection-oriented} protocols and SOCK\_DGRAM for \seqsplit{connectionless} protocols. &  \tn 
% Row Count 40 (+ 12)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{x{1.55618 cm} x{1.51041 cm} x{1.51041 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Sockets (cont)}}  \tn
% Row 3
\SetRowColor{LightBackground}
protocol & Typically zero, this may be used to identify a variant of a protocol within a domain and type. &  \tn 
% Row Count 8 (+ 8)
% Row 4
\SetRowColor{white}
hostname & The identifier of a network interface: \{\{nl\}\} \{\{nl\}\} A string, which can be a host name, a dotted-quad address, or an IPV6 address in colon (and possibly dot) notation \{\{nl\}\}\{\{nl\}\}A string "\textless{}broadcast\textgreater{}", which specifies an \seqsplit{INADDR\_BROADCAST} address. \{\{nl\}\}\{\{nl\}\}A zero-length string, which specifies INADDR\_ANY, or \{\{nl\}\}An Integer, interpreted as a binary address in host byte order. &  \tn 
% Row Count 38 (+ 30)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.9954 cm} x{3.9816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Server Socket Methods}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{s.bind()} & This method binds address (hostname, port number pair) to socket. \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\seqsplit{s.listen()} & This method sets up and start TCP listener. \tn 
% Row Count 5 (+ 2)
% Row 2
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\seqsplit{s.accept()} & This passively accept TCP client connection, waiting until connection arrives (blocking). \tn 
% Row Count 8 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.09494 cm} x{3.88206 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Client Socket Method}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{s.connect()} & This method actively initiates TCP server connection. \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.89126 cm} x{3.08574 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{General Socket Method}}  \tn
% Row 0
\SetRowColor{LightBackground}
s.recv() & This method receives TCP message \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
s.send() & This method transmits TCP message \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
s.recvfrom() & This method receives UDP message \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
s.sendto() & This method transmits UDP message \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
s.close() & This method closes socket \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{socket.gethostname()} & Returns the hostname. \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Simple Server Example}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\#!/usr/bin/python           \# This is server.py file \newline  \newline import socket               \# Import socket module \newline  \newline s = socket.socket()         \# Create a socket object \newline host = socket.gethostname() \# Get local machine name \newline port = 12345                \# Reserve a port for your service. \newline s.bind((host, port))        \# Bind to the port \newline  \newline s.listen(5)                 \# Now wait for client connection. \newline while True: \newline    c, addr = s.accept()     \# Establish connection with client. \newline    print 'Got connection from', addr \newline    c.send('Thank you for connecting') \newline    c.close()                \# Close the connection} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Simple Client Example}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\#!/usr/bin/python           \# This is client.py file \newline  \newline import socket               \# Import socket module \newline  \newline s = socket.socket()         \# Create a socket object \newline host = socket.gethostname() \# Get local machine name \newline port = 12345                \# Reserve a port for your service. \newline  \newline s.connect((host, port)) \newline print s.recv(1024) \newline s.close                     \# Close the socket when done} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}