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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 note">
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<p class="first admonition-title">Note</p>
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<p class="last">Corda is developed on MacOS and works best on UNIX systems. Both demos are easily run on Windows but
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you won’t get the nice coloured output.</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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<p>Open two terminals, and in the first run:</p>
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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">If you are planning to use non-default configuration you will need to run with –role=SetupA and –role=SetupB
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beforehand with the same parameters you plan to supply to the respective nodes.</p>
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</div>
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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>gradlew.bat & .\build\install\r3prototyping\bin\trader-demo --role=BUYER
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</pre></div>
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</div>
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<p><strong>Other</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="n">Other</span><span class="p">:</span> <span class="p">./</span><span class="n">gradlew</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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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>.\build\install\r3prototyping\bin\trader-demo --role=SELLER
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</pre></div>
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</div>
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<p><strong>Other</strong>:</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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<p>Open three terminals. In the first run:</p>
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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>gradlew.bat installDist & .\build\install\r3prototyping\bin\irsdemo.bat --role=NodeA
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</pre></div>
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</div>
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<p><strong>Other</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span><span class="p">./</span><span class="n">gradlew</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">irsdemo</span> <span class="p">--</span><span class="n">role</span><span class="p">=</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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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>.\build\install\r3prototyping\bin\irsdemo.bat --role=NodeB
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</pre></div>
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</div>
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<p><strong>Other</strong>:</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">irsdemo</span> <span class="p">--</span><span class="n">role</span><span class="p">=</span><span class="n">NodeB</span>
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</pre></div>
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</div>
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<p>NodeB also doubles up as the interest rates oracle and you should see some rates data get loaded.</p>
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<p>Now in the third terminal run:</p>
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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>.\build\install\r3prototyping\bin\irsdemo.bat --role=Trade trade1
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</pre></div>
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</div>
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<p><strong>Other</strong>:</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">irsdemo</span> <span class="p">--</span><span class="n">role</span><span class="p">=</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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<p><strong>Windows</strong>:</p>
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<div class="highlight-kotlin"><div class="highlight"><pre><span></span>.\build\install\r3prototyping\bin\irsdemo.bat --role=Date 2017-01-30
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</pre></div>
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</div>
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<p><strong>Other</strong>:</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">irsdemo</span> <span class="p">--</span><span class="n">role</span><span class="p">=</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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