\subsection{XMPP}
\todo
\cite{rfc6120}
\begin{itemize}
	\item architecture: client-server, use of DNS-SD
	\item addressing: JIDs, resources
	\item XML-based communication primitives, stanzas and streams
	\item presence
	\item publish/subscribe \cite{xep-0060}, roster
	\item multi-user chats \cite{xep-0045}
\end{itemize}

\pages{3-4}


\subsubsection{XMPP Serverless Messaging}
\todo
\cite{xep-0174} \pages{1}

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