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<li class="toctree-l1"><a class="reference internal" href="getting-set-up.html">Getting set up</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">Running the demos</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#trader-demo">Trader demo</a></li>
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<div class="section" id="running-the-demos">
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<h1>Running the demos<a class="headerlink" href="#running-the-demos" title="Permalink to this headline">¶</a></h1>
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<p>The repository contains a small number of demo programs that run two-node networks, demonstrating functionality developed
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so far. We have:</p>
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<ol class="arabic simple">
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<li>The trader demo, which shows a delivery-vs-payment atomic swap of commercial paper for cash. You can learn more about
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how this works in <a class="reference internal" href="protocol-state-machines.html"><span class="doc">Protocol state machines</span></a>.</li>
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<li>The IRS demo, which shows two nodes establishing an interest rate swap between them and performing fixings with a
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rates oracle, all driven via the HTTP API.</li>
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</ol>
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<p>The demos create node data directories in the root of the project. If something goes wrong with them, blow away the
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directories and try again.</p>
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<div class="admonition warning">
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<p class="first admonition-title">Warning</p>
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<p class="last">Corda is developed on MacOS and works best on UNIX systems. The trader demo is easily run on Windows but
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you won’t get the nice coloured output. The IRS demo relies on a shell script wrapper and isn’t so easily run on
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Windows currently: we will fix this soon.</p>
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</div>
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<div class="section" id="trader-demo">
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<h2>Trader demo<a class="headerlink" href="#trader-demo" title="Permalink to this headline">¶</a></h2>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p class="last">On Windows, use the same commands, but run the batch file instead of the shell file (add .bat to the command)</p>
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</div>
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<p>Open two terminals, and in the first run::</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="n">gradle</span> <span class="n">installDist</span> <span class="p">&&</span> <span class="p">./</span><span class="n">build</span><span class="p">/</span><span class="n">install</span><span class="p">/</span><span class="n">r3prototyping</span><span class="p">/</span><span class="n">bin</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">role</span><span class="p">=</span><span class="n">BUYER</span>
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</pre></div>
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</div>
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<p>It will compile things, if necessary, then create a directory named trader-demo/buyer with a bunch of files inside and
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start the node. You should see it waiting for a trade to begin.</p>
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<p>In the second terminal, run:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">build</span><span class="p">/</span><span class="n">install</span><span class="p">/</span><span class="n">r3prototyping</span><span class="p">/</span><span class="n">bin</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">role</span><span class="p">=</span><span class="n">SELLER</span>
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</pre></div>
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</div>
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<p>You should see some log lines scroll past, and within a few seconds the messages “Purchase complete - we are a
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happy customer!” and “Sale completed - we have a happy customer!” should be printed.</p>
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<p>If it doesn’t work, jump on the mailing list and let us know.</p>
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</div>
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<div class="section" id="irs-demo">
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<h2>IRS demo<a class="headerlink" href="#irs-demo" title="Permalink to this headline">¶</a></h2>
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<div class="admonition warning">
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<p class="first admonition-title">Warning</p>
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<p class="last">This demo currently works best on MacOS or Linux</p>
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</div>
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<p>Open three terminals. In the first run::</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">irs</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">nodeA</span>
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</pre></div>
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</div>
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<p>And in the second run::</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">irs</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">nodeB</span>
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</pre></div>
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</div>
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<p>The node in the first terminal will complain that it didn’t know about nodeB, so restart it. It’ll then find the
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location and identity keys of nodeA and be happy. NodeB also doubles up as the interest rates oracle and you should
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see some rates data get loaded.</p>
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<p>Now in the third terminal run::</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">irs</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">trade</span> <span class="n">trade1</span>
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</pre></div>
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</div>
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<p>You should see some activity in the other two terminals as they set up the deal. You can now run this command in
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a separate window to roll the fake clock forward and trigger lots of fixing events. Things go fast so make sure you
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can see the other terminals whilst you run this command!:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">scripts</span><span class="p">/</span><span class="n">irs</span><span class="p">-</span><span class="n">demo</span><span class="p">.</span><span class="n">sh</span> <span class="n">date</span> <span class="m">2017</span><span class="p">-</span><span class="m">01</span><span class="p">-</span><span class="m">30</span>
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</pre></div>
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