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  <div class="section" id="running-the-trading-demo">
<h1>Running the trading demo<a class="headerlink" href="#running-the-trading-demo" title="Permalink to this headline">ΒΆ</a></h1>
<p>The repository contains a program that implements a demo of two nodes running the two-party trading protocol, which you
can learn about in <a class="reference internal" href="protocol-state-machines.html"><em>Protocol state machines</em></a>.</p>
<p>The node has only currently been tested on MacOS X and Ubuntu Linux. If you have success on other platforms, please
let us know.</p>
<p>Now, open two terminals, and in the first run::</p>
<div class="highlight-kotlin"><div class="highlight"><pre><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">trader</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">buyer</span>
</pre></div>
</div>
<p>It will compile things, if necessary, then create a directory named &#8220;buyer&#8221; with a bunch of files inside and start
the node. You should see it waiting for a trade to begin.</p>
<p>In the second terminal, run:</p>
<div class="highlight-kotlin"><div class="highlight"><pre><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">trader</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">seller</span>
</pre></div>
</div>
<p>You should see some log lines scroll past, and within a few seconds the messages &#8220;Purchase complete - we are a
happy customer!&#8221; and &#8220;Sale completed - we have a happy customer!&#8221; should be printed.</p>
<p>If it doesn&#8217;t work, jump on the mailing list and let us know.</p>
<p>For Windows users, the contents of the shell script are very trivial and can easily be done by hand from a command
window. Essentially, it just runs Gradle to create the startup scripts, and then starts the node with one set of
flags or another.</p>
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