doc/sphinx/_build/html/_modules/nepi/resources/linux/ns3/fdudptunnel.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
   2   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
   3
   4
   5 <html xmlns="http://www.w3.org/1999/xhtml">
   6   <head>
   7     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   8
   9     <title>nepi.resources.linux.ns3.fdudptunnel &mdash; NEPI 3.0 documentation</title>
  10
  11     <link rel="stylesheet" href="../../../../../_static/sphinxdoc.css" type="text/css" />
  12     <link rel="stylesheet" href="../../../../../_static/pygments.css" type="text/css" />
  13
  14     <script type="text/javascript">
  15       var DOCUMENTATION_OPTIONS = {
  16         URL_ROOT:    '../../../../../',
  17         VERSION:     '3.0',
  18         COLLAPSE_INDEX: false,
  19         FILE_SUFFIX: '.html',
  20         HAS_SOURCE:  true
  21       };
  22     </script>
  23     <script type="text/javascript" src="../../../../../_static/jquery.js"></script>
  24     <script type="text/javascript" src="../../../../../_static/underscore.js"></script>
  25     <script type="text/javascript" src="../../../../../_static/doctools.js"></script>
  26     <link rel="top" title="NEPI 3.0 documentation" href="../../../../../index.html" />
  27     <link rel="up" title="Module code" href="../../../../index.html" />
  28   </head>
  29   <body>
  30     <div class="related">
  31       <h3>Navigation</h3>
  32       <ul>
  33         <li class="right" style="margin-right: 10px">
  34           <a href="../../../../../genindex.html" title="General Index"
  35              accesskey="I">index</a></li>
  36         <li class="right" >
  37           <a href="../../../../../py-modindex.html" title="Python Module Index"
  38              >modules</a> |</li>
  39         <li><a href="../../../../../index.html">NEPI 3.0 documentation</a> &raquo;</li>
  40           <li><a href="../../../../index.html" accesskey="U">Module code</a> &raquo;</li>
  41       </ul>
  42     </div>
  43       <div class="sphinxsidebar">
  44         <div class="sphinxsidebarwrapper">
  45 <div id="searchbox" style="display: none">
  46   <h3>Quick search</h3>
  47     <form class="search" action="../../../../../search.html" method="get">
  48       <input type="text" name="q" />
  49       <input type="submit" value="Go" />
  50       <input type="hidden" name="check_keywords" value="yes" />
  51       <input type="hidden" name="area" value="default" />
  52     </form>
  53     <p class="searchtip" style="font-size: 90%">
  54     Enter search terms or a module, class or function name.
  55     </p>
  56 </div>
  57 <script type="text/javascript">$('#searchbox').show(0);</script>
  58         </div>
  59       </div>
  60
  61     <div class="document">
  62       <div class="documentwrapper">
  63         <div class="bodywrapper">
  64           <div class="body">
  65
  66   <h1>Source code for nepi.resources.linux.ns3.fdudptunnel</h1><div class="highlight"><pre>
  67 <span class="c">#</span>
  68 <span class="c">#    NEPI, a framework to manage network experiments</span>
  69 <span class="c">#    Copyright (C) 2013 INRIA</span>
  70 <span class="c">#</span>
  71 <span class="c">#    This program is free software: you can redistribute it and/or modify</span>
  72 <span class="c">#    it under the terms of the GNU General Public License version 2 as</span>
  73 <span class="c">#    published by the Free Software Foundation;</span>
  74 <span class="c">#</span>
  75 <span class="c">#    This program is distributed in the hope that it will be useful,</span>
  76 <span class="c">#    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
  77 <span class="c">#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
  78 <span class="c">#    GNU General Public License for more details.</span>
  79 <span class="c">#</span>
  80 <span class="c">#    You should have received a copy of the GNU General Public License</span>
  81 <span class="c">#    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
  82 <span class="c">#</span>
  83 <span class="c"># Author: Alina Quereilhac &lt;alina.quereilhac@inria.fr&gt;</span>
  84
  85 <span class="kn">from</span> <span class="nn">nepi.execution.attribute</span> <span class="kn">import</span> <span class="n">Attribute</span><span class="p">,</span> <span class="n">Flags</span><span class="p">,</span> <span class="n">Types</span>
  86 <span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">clsinit_copy</span><span class="p">,</span> <span class="n">ResourceState</span>
  87 <span class="kn">from</span> <span class="nn">nepi.resources.linux.udptunnel</span> <span class="kn">import</span> <span class="n">LinuxUdpTunnel</span>
  88 <span class="kn">from</span> <span class="nn">nepi.util.sshfuncs</span> <span class="kn">import</span> <span class="n">ProcStatus</span>
  89 <span class="kn">from</span> <span class="nn">nepi.util.timefuncs</span> <span class="kn">import</span> <span class="n">tnow</span><span class="p">,</span> <span class="n">tdiffsec</span>
  90
  91 <span class="kn">import</span> <span class="nn">base64</span>
  92 <span class="kn">import</span> <span class="nn">os</span>
  93 <span class="kn">import</span> <span class="nn">socket</span>
  94 <span class="kn">import</span> <span class="nn">time</span>
  95
  96 <span class="nd">@clsinit_copy</span>
  97 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel">[docs]</a><span class="k">class</span> <span class="nc">LinuxNs3FdUdpTunnel</span><span class="p">(</span><span class="n">LinuxUdpTunnel</span><span class="p">):</span>
  98     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::ns3::FdUdpTunnel&quot;</span>
  99     <span class="n">_help</span> <span class="o">=</span> <span class="s">&quot;Constructs a tunnel between two Ns-3 FdNetdevices &quot;</span> \
 100             <span class="s">&quot;located in remote Linux nodes using a UDP connection &quot;</span>
 101     <span class="n">_platform</span> <span class="o">=</span> <span class="s">&quot;linux::ns3&quot;</span>
 102
 103     <span class="nd">@classmethod</span>
 104     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
 105         <span class="n">cipher</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;cipher&quot;</span><span class="p">,</span>
 106                <span class="s">&quot;Cipher to encript communication. &quot;</span>
 107                 <span class="s">&quot;One of PLAIN, AES, Blowfish, DES, DES3. &quot;</span><span class="p">,</span>
 108                 <span class="n">default</span> <span class="o">=</span> <span class="bp">None</span><span class="p">,</span>
 109                 <span class="n">allowed</span> <span class="o">=</span> <span class="p">[</span><span class="s">&quot;PLAIN&quot;</span><span class="p">,</span> <span class="s">&quot;AES&quot;</span><span class="p">,</span> <span class="s">&quot;Blowfish&quot;</span><span class="p">,</span> <span class="s">&quot;DES&quot;</span><span class="p">,</span> <span class="s">&quot;DES3&quot;</span><span class="p">],</span>
 110                 <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Enumerate</span><span class="p">,</span>
 111                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 112
 113         <span class="n">cipher_key</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;cipherKey&quot;</span><span class="p">,</span>
 114                 <span class="s">&quot;Specify a symmetric encryption key with which to protect &quot;</span>
 115                 <span class="s">&quot;packets across the tunnel. python-crypto must be installed &quot;</span>
 116                 <span class="s">&quot;on the system.&quot;</span> <span class="p">,</span>
 117                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 118
 119         <span class="n">txqueuelen</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;txQueueLen&quot;</span><span class="p">,</span>
 120                 <span class="s">&quot;Specifies the interface&#39;s transmission queue length. &quot;</span>
 121                 <span class="s">&quot;Defaults to 1000. &quot;</span><span class="p">,</span>
 122                 <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">,</span>
 123                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 124
 125         <span class="n">bwlimit</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;bwLimit&quot;</span><span class="p">,</span>
 126                 <span class="s">&quot;Specifies the interface&#39;s emulated bandwidth in bytes &quot;</span>
 127                 <span class="s">&quot;per second.&quot;</span><span class="p">,</span>
 128                 <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">,</span>
 129                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 130
 131         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">cipher</span><span class="p">)</span>
 132         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">cipher_key</span><span class="p">)</span>
 133         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">txqueuelen</span><span class="p">)</span>
 134         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">bwlimit</span><span class="p">)</span>
 135
 136     <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
 137         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxUdpTunnel</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">)</span>
 138         <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">&quot;fd-udp-tunnel-</span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span>
 139         <span class="bp">self</span><span class="o">.</span><span class="n">_pids</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span>
 140         <span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span> <span class="o">=</span> <span class="bp">None</span>
 141         <span class="bp">self</span><span class="o">.</span><span class="n">_fd1node</span> <span class="o">=</span> <span class="bp">None</span>
 142         <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span> <span class="o">=</span> <span class="bp">None</span>
 143         <span class="bp">self</span><span class="o">.</span><span class="n">_fd2node</span> <span class="o">=</span> <span class="bp">None</span>
 144         <span class="bp">self</span><span class="o">.</span><span class="n">_pi</span> <span class="o">=</span> <span class="bp">False</span>
 145
 146 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.log_message"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.log_message">[docs]</a>    <span class="k">def</span> <span class="nf">log_message</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">msg</span><span class="p">):</span>
 147         <span class="bp">self</span><span class="o">.</span><span class="n">get_endpoints</span><span class="p">()</span>
 148         <span class="k">return</span> <span class="s">&quot; guid </span><span class="si">%d</span><span class="s"> - </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">,</span>
 149                 <span class="bp">self</span><span class="o">.</span><span class="n">node1</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">),</span>
 150                 <span class="bp">self</span><span class="o">.</span><span class="n">node2</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">),</span>
 151                 <span class="n">msg</span><span class="p">)</span>
 152 </div>
 153 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.get_endpoints"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.get_endpoints">[docs]</a>    <span class="k">def</span> <span class="nf">get_endpoints</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 154         <span class="sd">&quot;&quot;&quot; Returns the list of RM that are endpoints to the tunnel </span>
 155 <span class="sd">        &quot;&quot;&quot;</span>
 156         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span> <span class="ow">or</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span><span class="p">:</span>
 157             <span class="kn">from</span> <span class="nn">nepi.resources.ns3.ns3fdnetdevice</span> <span class="kn">import</span> <span class="n">NS3BaseFdNetDevice</span>
 158             <span class="n">devices</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">NS3BaseFdNetDevice</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 159             <span class="k">if</span> <span class="ow">not</span> <span class="n">devices</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">devices</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">2</span><span class="p">:</span>
 160                 <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;linux::ns3::TunTapFdLink must be connected to exactly one FdNetDevice&quot;</span>
 161                 <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 162                 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 163
 164             <span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span> <span class="o">=</span> <span class="n">devices</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 165             <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span> <span class="o">=</span> <span class="n">devices</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
 166
 167             <span class="n">simu</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span><span class="o">.</span><span class="n">simulation</span>
 168             <span class="kn">from</span> <span class="nn">nepi.resources.linux.node</span> <span class="kn">import</span> <span class="n">LinuxNode</span>
 169             <span class="n">nodes</span> <span class="o">=</span> <span class="n">simu</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 170             <span class="bp">self</span><span class="o">.</span><span class="n">_fd1node</span> <span class="o">=</span> <span class="n">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 171
 172             <span class="n">simu</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span><span class="o">.</span><span class="n">simulation</span>
 173             <span class="kn">from</span> <span class="nn">nepi.resources.linux.node</span> <span class="kn">import</span> <span class="n">LinuxNode</span>
 174             <span class="n">nodes</span> <span class="o">=</span> <span class="n">simu</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 175             <span class="bp">self</span><span class="o">.</span><span class="n">_fd2node</span> <span class="o">=</span> <span class="n">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 176
 177             <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd1node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">)</span> <span class="o">==</span> \
 178                     <span class="bp">self</span><span class="o">.</span><span class="n">_fd2node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">):</span>
 179                 <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;linux::ns3::FdUdpTunnel requires endpoints on different hosts&quot;</span>
 180                 <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
 181                 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 182
 183         <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span><span class="p">]</span>
 184 </div>
 185     <span class="nd">@property</span>
 186 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.pi"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.pi">[docs]</a>    <span class="k">def</span> <span class="nf">pi</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 187         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pi</span>
 188 </div>
 189     <span class="nd">@property</span>
 190 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.endpoint1"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.endpoint1">[docs]</a>    <span class="k">def</span> <span class="nf">endpoint1</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 191         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd1</span>
 192 </div>
 193     <span class="nd">@property</span>
 194 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.endpoint2"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.endpoint2">[docs]</a>    <span class="k">def</span> <span class="nf">endpoint2</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 195         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd2</span>
 196 </div>
 197     <span class="nd">@property</span>
 198 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.node1"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.node1">[docs]</a>    <span class="k">def</span> <span class="nf">node1</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 199         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd1node</span>
 200 </div>
 201     <span class="nd">@property</span>
 202 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.node2"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.node2">[docs]</a>    <span class="k">def</span> <span class="nf">node2</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 203         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd2node</span>
 204 </div>
 205 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.endpoint_node"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.endpoint_node">[docs]</a>    <span class="k">def</span> <span class="nf">endpoint_node</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 206         <span class="n">node</span> <span class="o">=</span> <span class="bp">None</span>
 207         <span class="k">if</span> <span class="n">endpoint</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint1</span><span class="p">:</span>
 208             <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node1</span>
 209         <span class="k">else</span><span class="p">:</span>
 210             <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node2</span>
 211
 212         <span class="k">return</span> <span class="n">node</span>
 213  </div>
 214 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.app_home"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.app_home">[docs]</a>    <span class="k">def</span> <span class="nf">app_home</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 215         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 216         <span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">exp_home</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_home</span><span class="p">)</span>
 217 </div>
 218 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.run_home"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.run_home">[docs]</a>    <span class="k">def</span> <span class="nf">run_home</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 219         <span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">run_id</span><span class="p">)</span>
 220 </div>
 221 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.upload_sources"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.upload_sources">[docs]</a>    <span class="k">def</span> <span class="nf">upload_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 222         <span class="n">scripts</span> <span class="o">=</span> <span class="p">[]</span>
 223
 224         <span class="c"># vif-passfd python script</span>
 225         <span class="n">linux_passfd</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span>
 226                 <span class="s">&quot;..&quot;</span><span class="p">,</span>
 227                 <span class="s">&quot;scripts&quot;</span><span class="p">,</span>
 228                 <span class="s">&quot;fd-udp-connect.py&quot;</span><span class="p">)</span>
 229
 230         <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">linux_passfd</span><span class="p">)</span>
 231
 232         <span class="c"># tunnel creation python script</span>
 233         <span class="n">tunchannel</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span>
 234                 <span class="s">&quot;..&quot;</span><span class="p">,</span>
 235                 <span class="s">&quot;scripts&quot;</span><span class="p">,</span>
 236                 <span class="s">&quot;tunchannel.py&quot;</span><span class="p">)</span>
 237
 238         <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tunchannel</span><span class="p">)</span>
 239
 240         <span class="c"># Upload scripts</span>
 241         <span class="n">scripts</span> <span class="o">=</span> <span class="s">&quot;;&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">scripts</span><span class="p">)</span>
 242
 243         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 244         <span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">scripts</span><span class="p">,</span>
 245                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">),</span>
 246                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 247 </div>
 248 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.endpoint_mkdir"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.endpoint_mkdir">[docs]</a>    <span class="k">def</span> <span class="nf">endpoint_mkdir</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 249         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 250         <span class="n">run_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 251         <span class="n">node</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">run_home</span><span class="p">)</span>
 252 </div>
 253 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.initiate_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.initiate_connection">[docs]</a>    <span class="k">def</span> <span class="nf">initiate_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">):</span>
 254         <span class="n">cipher</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;cipher&quot;</span><span class="p">)</span>
 255         <span class="n">cipher_key</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;cipherKey&quot;</span><span class="p">)</span>
 256         <span class="n">bwlimit</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;bwLimit&quot;</span><span class="p">)</span>
 257         <span class="n">txqueuelen</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;txQueueLen&quot;</span><span class="p">)</span>
 258
 259         <span class="c"># Upload the tunnel creating script</span>
 260         <span class="bp">self</span><span class="o">.</span><span class="n">upload_sources</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 261
 262         <span class="c"># Request an address to send the file descriptor to the ns-3 simulation</span>
 263         <span class="n">address</span> <span class="o">=</span> <span class="n">endpoint</span><span class="o">.</span><span class="n">recv_fd</span><span class="p">()</span>
 264
 265         <span class="c"># execute the tunnel creation script</span>
 266         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">remote_endpoint</span><span class="p">)</span>
 267         <span class="n">port</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">initiate</span><span class="p">(</span><span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">address</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span>
 268                 <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">)</span>
 269
 270         <span class="k">return</span> <span class="n">port</span>
 271 </div>
 272 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.establish_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.establish_connection">[docs]</a>    <span class="k">def</span> <span class="nf">establish_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">port</span><span class="p">):</span>
 273         <span class="bp">self</span><span class="o">.</span><span class="n">establish</span><span class="p">(</span><span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">port</span><span class="p">)</span>
 274 </div>
 275 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.verify_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.verify_connection">[docs]</a>    <span class="k">def</span> <span class="nf">verify_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">):</span>
 276         <span class="bp">self</span><span class="o">.</span><span class="n">verify</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 277 </div>
 278 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.terminate_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.terminate_connection">[docs]</a>    <span class="k">def</span> <span class="nf">terminate_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">):</span>
 279         <span class="c"># Nothing to do</span>
 280         <span class="k">return</span>
 281 </div>
 282 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.check_state_connection"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.check_state_connection">[docs]</a>    <span class="k">def</span> <span class="nf">check_state_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 283         <span class="c"># Make sure the process is still running in background</span>
 284         <span class="c"># No execution errors occurred. Make sure the background</span>
 285         <span class="c"># process with the recorded pid is still running.</span>
 286
 287         <span class="n">node1</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">endpoint1</span><span class="p">)</span>
 288         <span class="n">node2</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">endpoint2</span><span class="p">)</span>
 289         <span class="n">run_home1</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">endpoint1</span><span class="p">)</span>
 290         <span class="n">run_home2</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">endpoint1</span><span class="p">)</span>
 291         <span class="p">(</span><span class="n">pid1</span><span class="p">,</span> <span class="n">ppid1</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pids</span><span class="p">[</span><span class="n">endpoint1</span><span class="p">]</span>
 292         <span class="p">(</span><span class="n">pid2</span><span class="p">,</span> <span class="n">ppid2</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pids</span><span class="p">[</span><span class="n">endpoint2</span><span class="p">]</span>
 293
 294         <span class="n">status1</span> <span class="o">=</span> <span class="n">node1</span><span class="o">.</span><span class="n">status</span><span class="p">(</span><span class="n">pid1</span><span class="p">,</span> <span class="n">ppid1</span><span class="p">)</span>
 295         <span class="n">status2</span> <span class="o">=</span> <span class="n">node2</span><span class="o">.</span><span class="n">status</span><span class="p">(</span><span class="n">pid2</span><span class="p">,</span> <span class="n">ppid2</span><span class="p">)</span>
 296
 297         <span class="k">if</span> <span class="n">status1</span> <span class="o">==</span> <span class="n">ProcStatus</span><span class="o">.</span><span class="n">FINISHED</span> <span class="ow">and</span> \
 298                 <span class="n">status2</span> <span class="o">==</span> <span class="n">ProcStatus</span><span class="o">.</span><span class="n">FINISHED</span><span class="p">:</span>
 299
 300             <span class="c"># check if execution errors occurred</span>
 301             <span class="p">(</span><span class="n">out1</span><span class="p">,</span> <span class="n">err1</span><span class="p">),</span> <span class="n">proc1</span> <span class="o">=</span> <span class="n">node1</span><span class="o">.</span><span class="n">check_errors</span><span class="p">(</span><span class="n">run_home1</span><span class="p">)</span>
 302             <span class="p">(</span><span class="n">out2</span><span class="p">,</span> <span class="n">err2</span><span class="p">),</span> <span class="n">proc2</span> <span class="o">=</span> <span class="n">node2</span><span class="o">.</span><span class="n">check_errors</span><span class="p">(</span><span class="n">run_home2</span><span class="p">)</span>
 303
 304             <span class="k">if</span> <span class="n">err1</span> <span class="ow">or</span> <span class="n">err2</span><span class="p">:</span>
 305                 <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Error occurred in tunnel&quot;</span>
 306                 <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">err1</span><span class="p">,</span> <span class="n">err2</span><span class="p">)</span>
 307                 <span class="bp">self</span><span class="o">.</span><span class="n">fail</span><span class="p">()</span>
 308             <span class="k">else</span><span class="p">:</span>
 309                 <span class="bp">self</span><span class="o">.</span><span class="n">set_stopped</span><span class="p">()</span>
 310 </div>
 311 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.wait_local_port"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.wait_local_port">[docs]</a>    <span class="k">def</span> <span class="nf">wait_local_port</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 312         <span class="sd">&quot;&quot;&quot; Waits until the local_port file for the endpoint is generated, </span>
 313 <span class="sd">        and returns the port number </span>
 314 <span class="sd">        </span>
 315 <span class="sd">        &quot;&quot;&quot;</span>
 316         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wait_file</span><span class="p">(</span><span class="n">endpoint</span><span class="p">,</span> <span class="s">&quot;local_port&quot;</span><span class="p">)</span>
 317 </div>
 318 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.wait_result"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.wait_result">[docs]</a>    <span class="k">def</span> <span class="nf">wait_result</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 319         <span class="sd">&quot;&quot;&quot; Waits until the return code file for the endpoint is generated </span>
 320 <span class="sd">        </span>
 321 <span class="sd">        &quot;&quot;&quot;</span>
 322         <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wait_file</span><span class="p">(</span><span class="n">endpoint</span><span class="p">,</span> <span class="s">&quot;ret_file&quot;</span><span class="p">)</span>
 323  </div>
 324 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.wait_file"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.wait_file">[docs]</a>    <span class="k">def</span> <span class="nf">wait_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">filename</span><span class="p">):</span>
 325         <span class="sd">&quot;&quot;&quot; Waits until file on endpoint is generated &quot;&quot;&quot;</span>
 326         <span class="n">result</span> <span class="o">=</span> <span class="bp">None</span>
 327         <span class="n">delay</span> <span class="o">=</span> <span class="mf">1.0</span>
 328
 329         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 330         <span class="n">run_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 331
 332         <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">xrange</span><span class="p">(</span><span class="mi">20</span><span class="p">):</span>
 333             <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">check_output</span><span class="p">(</span><span class="n">run_home</span><span class="p">,</span> <span class="n">filename</span><span class="p">)</span>
 334
 335             <span class="k">if</span> <span class="n">out</span><span class="p">:</span>
 336                 <span class="n">result</span> <span class="o">=</span> <span class="n">out</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
 337                 <span class="k">break</span>
 338             <span class="k">else</span><span class="p">:</span>
 339                 <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">delay</span><span class="p">)</span>
 340                 <span class="n">delay</span> <span class="o">=</span> <span class="n">delay</span> <span class="o">*</span> <span class="mf">1.5</span>
 341         <span class="k">else</span><span class="p">:</span>
 342             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Couldn&#39;t retrieve </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">filename</span>
 343             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
 344             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 345
 346         <span class="k">return</span> <span class="n">result</span>
 347 </div>
 348 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.initiate"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.initiate">[docs]</a>    <span class="k">def</span> <span class="nf">initiate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">address</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span>
 349             <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">):</span>
 350
 351         <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initiate_command</span><span class="p">(</span><span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span>
 352                 <span class="n">address</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">)</span>
 353
 354         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 355         <span class="n">run_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 356         <span class="n">app_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 357
 358         <span class="c"># upload command to connect.sh script</span>
 359         <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">app_home</span><span class="p">,</span> <span class="s">&quot;fd-udp-connect.sh&quot;</span><span class="p">)</span>
 360         <span class="n">node</span><span class="o">.</span><span class="n">upload_command</span><span class="p">(</span><span class="n">command</span><span class="p">,</span>
 361                 <span class="n">shfile</span> <span class="o">=</span> <span class="n">shfile</span><span class="p">,</span>
 362                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 363
 364         <span class="c"># invoke connect script</span>
 365         <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;bash </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">shfile</span>
 366         <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">run_home</span><span class="p">)</span>
 367
 368         <span class="c"># check if execution errors occurred</span>
 369         <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Failed to connect endpoints &quot;</span>
 370
 371         <span class="k">if</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 372             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
 373             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 374
 375         <span class="c"># Wait for pid file to be generated</span>
 376         <span class="n">pid</span><span class="p">,</span> <span class="n">ppid</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">wait_pid</span><span class="p">(</span><span class="n">run_home</span><span class="p">)</span>
 377
 378         <span class="bp">self</span><span class="o">.</span><span class="n">_pids</span><span class="p">[</span><span class="n">endpoint</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">pid</span><span class="p">,</span> <span class="n">ppid</span><span class="p">)</span>
 379
 380         <span class="c"># Check for error information on the remote machine</span>
 381         <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">check_errors</span><span class="p">(</span><span class="n">run_home</span><span class="p">)</span>
 382         <span class="c"># Out is what was written in the stderr file</span>
 383         <span class="k">if</span> <span class="n">err</span><span class="p">:</span>
 384             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot; Failed to start command &#39;</span><span class="si">%s</span><span class="s">&#39; &quot;</span> <span class="o">%</span> <span class="n">command</span>
 385             <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
 386             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 387
 388         <span class="n">port</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">wait_local_port</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 389
 390         <span class="k">return</span> <span class="n">port</span>
 391 </div>
 392     <span class="k">def</span> <span class="nf">_initiate_command</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">address</span><span class="p">,</span>
 393             <span class="n">cipher</span><span class="p">,</span> <span class="n">cipher_key</span><span class="p">,</span> <span class="n">bwlimit</span><span class="p">,</span> <span class="n">txqueuelen</span><span class="p">):</span>
 394         <span class="n">local_node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 395         <span class="n">local_run_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 396         <span class="n">local_app_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 397         <span class="n">remote_node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">remote_endpoint</span><span class="p">)</span>
 398
 399         <span class="n">local_ip</span> <span class="o">=</span> <span class="n">local_node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;ip&quot;</span><span class="p">)</span>
 400         <span class="n">remote_ip</span> <span class="o">=</span> <span class="n">remote_node</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;ip&quot;</span><span class="p">)</span>
 401
 402         <span class="n">local_port_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">local_run_home</span><span class="p">,</span> <span class="s">&quot;local_port&quot;</span><span class="p">)</span>
 403         <span class="n">remote_port_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">local_run_home</span><span class="p">,</span>  <span class="s">&quot;remote_port&quot;</span><span class="p">)</span>
 404         <span class="n">ret_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">local_run_home</span><span class="p">,</span> <span class="s">&quot;ret_file&quot;</span><span class="p">)</span>
 405
 406         <span class="n">address</span> <span class="o">=</span> <span class="n">base64</span><span class="o">.</span><span class="n">b64encode</span><span class="p">(</span><span class="n">address</span><span class="p">)</span>
 407
 408         <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="s">&quot;&quot;</span><span class="p">]</span>
 409         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;PYTHONPATH=$PYTHONPATH:${SRC}&quot;</span><span class="p">)</span>
 410         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;python ${SRC}/fd-udp-connect.py&quot;</span><span class="p">)</span>
 411         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-a </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">address</span><span class="p">)</span>
 412         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-p </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">local_port_file</span><span class="p">)</span>
 413         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-P </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">remote_port_file</span><span class="p">)</span>
 414         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-o </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">local_ip</span><span class="p">)</span>
 415         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-O </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">remote_ip</span><span class="p">)</span>
 416         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-R </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">ret_file</span><span class="p">)</span>
 417         <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-t </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="s">&quot;IFF_TAP&quot;</span><span class="p">)</span>
 418         <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">pi</span><span class="p">:</span>
 419             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-n&quot;</span><span class="p">)</span>
 420         <span class="k">if</span> <span class="n">cipher</span><span class="p">:</span>
 421             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-c </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">cipher</span><span class="p">)</span>
 422         <span class="k">if</span> <span class="n">cipher_key</span><span class="p">:</span>
 423             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-k </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="n">cipher_key</span><span class="p">)</span>
 424         <span class="k">if</span> <span class="n">txqueuelen</span><span class="p">:</span>
 425             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-q </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="n">txqueuelen</span><span class="p">)</span>
 426         <span class="k">if</span> <span class="n">bwlimit</span><span class="p">:</span>
 427             <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-b </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="n">bwlimit</span><span class="p">)</span>
 428
 429         <span class="n">command</span> <span class="o">=</span> <span class="s">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
 430         <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">local_node</span><span class="p">,</span>
 431                 <span class="n">app_home</span><span class="o">=</span><span class="n">local_app_home</span><span class="p">,</span> <span class="n">run_home</span><span class="o">=</span><span class="n">local_run_home</span><span class="p">)</span>
 432
 433         <span class="k">return</span> <span class="n">command</span>
 434
 435 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.establish"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.establish">[docs]</a>    <span class="k">def</span> <span class="nf">establish</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">,</span> <span class="n">remote_endpoint</span><span class="p">,</span> <span class="n">port</span><span class="p">):</span>
 436         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">endpoint_node</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 437         <span class="n">run_home</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 438
 439         <span class="c"># upload remote port number to file</span>
 440         <span class="n">remote_port</span> <span class="o">=</span> <span class="s">&quot;</span><span class="si">%s</span><span class="se">\n</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">port</span>
 441         <span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">remote_port</span><span class="p">,</span>
 442                 <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">run_home</span><span class="p">,</span> <span class="s">&quot;remote_port&quot;</span><span class="p">),</span>
 443                 <span class="n">text</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span>
 444                 <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
 445 </div>
 446 <div class="viewcode-block" id="LinuxNs3FdUdpTunnel.verify"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.fdudptunnel.LinuxNs3FdUdpTunnel.verify">[docs]</a>    <span class="k">def</span> <span class="nf">verify</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">endpoint</span><span class="p">):</span>
 447         <span class="bp">self</span><span class="o">.</span><span class="n">wait_result</span><span class="p">(</span><span class="n">endpoint</span><span class="p">)</span>
 448 </pre></div></div></div>
 449
 450           </div>
 451         </div>
 452       </div>
 453       <div class="clearer"></div>
 454     </div>
 455     <div class="related">
 456       <h3>Navigation</h3>
 457       <ul>
 458         <li class="right" style="margin-right: 10px">
 459           <a href="../../../../../genindex.html" title="General Index"
 460              >index</a></li>
 461         <li class="right" >
 462           <a href="../../../../../py-modindex.html" title="Python Module Index"
 463              >modules</a> |</li>
 464         <li><a href="../../../../../index.html">NEPI 3.0 documentation</a> &raquo;</li>
 465           <li><a href="../../../../index.html" >Module code</a> &raquo;</li>
 466       </ul>
 467     </div>
 468     <div class="footer">
 469         &copy; Copyright 2014, Alina Quereilhac, Lucia Guevgeozian Odizzio, Julien Tribino.
 470       Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.3.
 471     </div>
 472   </body>
 473 </html>