2 juliet/
{(-
1,-
1)
}/XMPP client
\code{juliet@example.net
}/below/computer,
3 examplenet/
{(-
1,
1)
}/XMPP server
\code{example.net
}/above/server,
4 imexampleorg/
{(
1,
1)
}/XMPP server
\code{im.example.org
}/above/server,
5 romeo/
{(
1,-
1)
}/XMPP client
\code{romeo@im.example.org
}/below/computer
%
7 \foreach \name/
\pos/
\text/
\tpos/
\icon in
\nodelist {
8 \node (
\name) at
\pos { \includegraphics[width=
2em
]{icon-
\icon.pdf
} };
9 \node[\tpos=of
\name,iconlabel
] (
\name text)
{ \text };
11 \draw[<->,dashed
] (juliet) -- node
[anchor=east,label
]{s2c
} (examplenet);
12 \draw[<->
] (examplenet) -- node
[anchor=south,label
]{s2s
} (imexampleorg);
13 \draw[<->,dashed
] (imexampleorg) -- node
[anchor=west,label
]{s2c
} (romeo);
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