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\documentclass[10pt]{article}
\usepackage[ansinew]{inputenc}
\usepackage{makeidx,amsmath,amssymb,exscale,multicol,epsfig,graphics,verbatim,ulem}
\usepackage{epsfig,geometry,url,listings}
\geometry{headsep=3ex,hscale=0.9}
\usepackage{hyperref}
\hypersetup{
pdftitle={gnunet-java tutorial},
pdfsubject={gnunet-java},
pdfauthor={Florian Dold <dold@in.tum.de>},
pdfkeywords={gnunet,java},
colorlinks=true,
urlcolor=blue
}
\title{Introduction to gnunet-java}
\author{Florian Dold}
\date{}
\begin{document}
\maketitle
\section{Prerequisites}
This tutorial assumes that you have gnunet$\geq$0.9.2 installed on your system.
Instructions on how to do this can be found at \url{https://gnunet.org/installation}.
TODO: ./configure --enable-javaports
Make sure that the default gnunet services are running by typing
\begin{lstlisting}
gnunet-arm -I
\end{lstlisting}
on your command line.
\section{Installing gnunet-java}
You can either check out the latest version of gnunet-java with
\lstset{language=bash}
\begin{lstlisting}
svn checkout https://gnunet.org/svn/gnunet-java/
\end{lstlisting}
or download a more convenient installer at \url{http://example.com/gnunet-java-installer.jar}.
You can start the installer by double-clicking on it, or running
\begin{lstlisting}
java -jar gnunet-java-installer.jar
\end{lstlisting}
on your command line.
\section{First Steps}
Programs to communicate with gnunet are located unter the bin/ directory. You can add this directory to your path,
otherwise you have to prefix every command with this directory.
To test if everything is working, try to run the program gnunet-nse. This should show you the estimated current size
of the network.
\subsection{Project Layout}
(explanation of the directory structure: src, test, bin, tools, gnunet-java-ext)
\section{Creating an extension}
(copying gnunet-java-ext, setting variables / the gnunet-java path in the bash wrapper)
\section{A simple gnunet-java program}
\lstset{language=java}
\begin{lstlisting}
public class HelloGnunet {
public static void main(String[] args) {
new Program(args) {
public void run() {
System.out.println("Hello, gnunet");
}
}.start();
}
\end{lstlisting}
\subsection{Adding and using command line arguments}
Command line options are added by annotating members of your org.gnunet.util.Program-subclass
with the \@Option-annotation.
\subsection{Using an existing service API}
In this section we will use the gnunet statistics api to track how often the HelloGnunet program
has been run.
\section {Overview of useful APIs}
statistics, dht, core
\section{Communicating with a Service directly}
\subsection{Using the client API}
\subsection{Defining a new message type}
(example, annotations, running gnunet-java-update-msgtypes)
\section{Writing a gnunet service}
\end{document}
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