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    <a href="https://reviewboard.asterisk.org/r/1698/diff/1/?file=23675#file23675line15130" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_sip.c</a>
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     (Diff revision 1)

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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static enum check_auth_result register_verify(struct sip_pvt *p, struct ast_sockaddr *addr,</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="k">if</span> <span class="p">(</span><span class="n">ast_test_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">peer</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">))</span> <span class="p">{</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">15131</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                                <span class="n">ast_copy_flags</span><span class="p">(</span><span class="o">&amp;</span><span class="n">peer</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                                <span class="n">ast_copy_flags</span><span class="p">(</span><span class="o">&amp;</span><span class="n">peer</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="p">}</span></pre></td>
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    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">15134</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This relies on the global nat=auto setting. See my next comment for a thorough explanation about why I would like to change this.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1698/diff/1/?file=23675#file23675line16213" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_sip.c</a>
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     (Diff revision 1)

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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void check_via(struct sip_pvt *p, struct sip_request *req)</pre></td>

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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16213</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="k">if</span> <span class="p">(</span><span class="n">ast_test_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="n">ast_sockaddr_cmp</span><span class="p">(</span><span class="o">&amp;</span><span class="n">tmp</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">recv</span><span class="p">))</span> <span class="p">{</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16214</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="kt">char</span> <span class="n">new</span><span class="p">[</span><span class="mi">512</span><span class="p">];</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16215</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">snprintf</span><span class="p">(</span><span class="n">new</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">new</span><span class="p">),</span> <span class="s">&quot;%s:%d&quot;</span><span class="p">,</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16216</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                                 <span class="n">ast_sockaddr_stringify_addr</span><span class="p">(</span><span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">recv</span><span class="p">),</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16217</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                                 <span class="n">ast_sockaddr_port</span><span class="p">(</span><span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">recv</span><span class="p">));</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16218</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_NOTICE</span><span class="p">,</span> <span class="s">&quot;NAT detected for %s</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span> <span class="n">new</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16219</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16220</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
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    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16221</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16222</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">16223</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This block forces nat=auto to be set for [general] for nat=auto to work for a peer. Better would be to remove the check for NAT_AUTO and toset a bitfield on the pvt for a detected nat, so that peers could check that and set the flags appropriately. Also, once something is marked as natted, it can never be unnatted because we don&#39;t clear the flags when the ast_sockaddr_cmp matches again.

Also, the ast_sockaddr_stringify_addr/port and snprintf can be replaced with a single call to ast_sockaddr_stringify.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1698/diff/1/?file=23675#file23675line27642" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_sip.c</a>
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     (Diff revision 1)

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   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int handle_common_options(struct ast_flags *flags, struct ast_flags *mask, struct ast_variable *v)</pre></td>

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    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27616</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">name</span><span class="p">,</span> <span class="s">&quot;nat&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27642</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">name</span><span class="p">,</span> <span class="s">&quot;nat&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
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  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27617</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27643</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>



 
 



 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27644</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>





 
 

 <tbody>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27618</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span> <span class="cm">/* Default to &quot;force_rport&quot; */</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27645</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span> <span class="cm">/* Default to &quot;force_rport&quot; */</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27619</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;no&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27646</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;no&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27620</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27647</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>



 
 



 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27648</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>





 
 

 <tbody>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27621</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;yes&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27649</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;yes&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27622</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="cm">/* We&#39;ve already defaulted to force_rport */</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27650</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="cm">/* We&#39;ve already defaulted to force_rport */</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27623</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27651</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27624</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27652</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>



 
 



 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27653</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>





 
 

 <tbody>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27625</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;comedia&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27654</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;comedia&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27626</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27655</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27627</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27656</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">27628</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
    <th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27657</font></th>
    <td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
  </tr>

 </tbody>



 
 



 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27658</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">);</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27659</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcasecmp</span><span class="p">(</span><span class="n">v</span><span class="o">-&gt;</span><span class="n">value</span><span class="p">,</span> <span class="s">&quot;auto&quot;</span><span class="p">))</span> <span class="p">{</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27660</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">SIP_PAGE3_NAT_AUTO</span><span class="p">);</span></pre></td>
  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2"></font></th>
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    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27661</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_set_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">mask</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27662</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">SIP_NAT_FORCE_RPORT</span><span class="p">);</span></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
    <th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">27663</font></th>
    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">                        <span class="n">ast_clear_flag</span><span class="p">(</span><span class="o">&amp;</span><span class="n">flags</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">SIP_PAGE2_SYMMETRICRTP</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">It shouldn&#39;t be necessary to clear SIP_PAGE3_NAT_AUTO everywhere. There is an existing bug here where we basically don&#39;t set the default &#39;no&#39; values by setting the mask flags for them, so if one sets nat=comedia in general, and nat=no in a peer, the peer still has symmetric RTP set. Setting the flags for the mask should take care for this, then the FORCE_RPORT flag is the only one that would need to be cleared manually since it defaults to yes.</pre>
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    <a href="https://reviewboard.asterisk.org/r/1698/diff/1/?file=23677#file23677line839" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/configs/sip.conf.sample</a>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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    <td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">;                                ; Auto nat detection must be set globally to work, but can be overriden per peer.</pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Since there are no other nat= options that require being set in [general] to work, I&#39;d prefer the change mentioned above.</pre>
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<p>- Terry</p>


<br />
<p>On January 26th, 2012, 8:07 p.m., Terry Wilson wrote:</p>






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<div>Review request for Asterisk Developers.</div>
<div>By Terry Wilson.</div>


<p style="color: grey;"><i>Updated Jan. 26, 2012, 8:07 p.m.</i></p>




<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">First, this patch as originally posted is from JIRA user pedro-garcia. It has been in JIRA for a long while, and has finally come up to be considered. There were some changes that I wanted to made to the original patch, so I tried contacting the author to get them to put the patch on reviewboard, but after a week I got no response. So, I&#39;m putting the original patch up, then will immediately add a review with my changes. Many thanks to pedro-garcia for his contribution.