\subsection{Service Provisioning Sublayer}
Considering the application in deeply embedded systems and the special needs of
-the Internet of Things on the one hand, the protocol stack needs to fulfil
+the Internet of Things on the one hand, the protocol stack needs to fulfill
certain technical requirements.
First, memory, computing resources and bandwidth on embedded systems are limited,
drawback that Multi-User Chats cannot be used for topic filtering, since no
method is specified to do XEP-0045 and XEP-0174 at the same time. In this case,
a user must have an XEP-0174-compliant chat client, but it also gives her the
-opportunity to interact with things spontaneously on an ad-hoc basis (e.~g. when
+opportunity to interact with things spontaneously on an ad hoc basis (e.~g. when
entering a room) without need for any additional gateway on the application
level.
\subsection{Bootstrapping}
With the given approach, bootstrapping new Chatty Things is easy and no
-configuration is neccessary: on the network layer, IP addresses can simply be
+configuration is necessary: on the network layer, IP addresses can simply be
obtained using IPv4 Link-Local Addressing or IPv6 Stateless Address
Autoconfiguration. On the transport layer, all needed ports can be obtained over
DNS-Based Service Discovery. Finally, on the application layer, host names can
\item If a server is found, connect to it using ANONYMOUS login, join
topic-based Multi-User Chats, deactivate the uBonjour client
\term{(Infrastructure mode).}
- \item If no server is found, activate the XEP-0174 client \term{(Ad-hoc
+ \item If no server is found, activate the XEP-0174 client \term{(Ad hoc
mode)}.
\end{enumerate}
\item In Infrastructure mode: when connection to the server is lost, enable
the uBonjour client, try to find a server, and when none is found, enable
Serverless Messaging.
- \item In Ad-hoc mode: if uBonjour detects a new XMPP server joining the
+ \item In Ad hoc mode: if uBonjour detects a new XMPP server joining the
network, try to connect to it. If this succeeds, disable Serverless
Messaging and uBonjour and join topic-based Multi-User Chats.
\end{itemize}