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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2206/">https://reviewboard.asterisk.org/r/2206/</a>
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<p style="margin-top: 0;">On November 26th, 2012, 3:50 a.m., <b>wdoekes</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2206/diff/1/?file=32226#file32226line17754" style="color: black; font-weight: bold; text-decoration: underline;">branches/11/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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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">17754</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="n">ast_sockaddr_resolve_first</span><span class="p">(</span><span class="o">&</span><span class="n">tmp</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<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="n">ast_sockaddr_resolve_first</span><span class="p">(</span><span class="o">&</span><span class="n">tmp</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" 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_WARNING</span><span class="p">,</span> <span class="s">"Could not resolve socket address for '%s'</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">c</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" 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_WARNING</span><span class="p">,</span> <span class="s">"Could not resolve socket address for '%s'</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">c</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">port</span> <span class="o">=</span> <span class="n">ast_sockaddr_port</span><span class="p">(</span><span class="o">&</span><span class="n">tmp</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_sockaddr_set_port</span><span class="p">(</span><span class="o">&</span><span class="n">p</span><span class="o">-></span><span class="n">sa</span><span class="p">,</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">port</span> <span class="o">!=</span> <span class="mi">0</span> <span class="o">?</span> <span class="n">port</span> <span class="o">:</span> <span class="n">STANDARD_SIP_PORT</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" 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>
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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="o">!</span><span class="p">(</span><span class="n">port</span> <span class="o">=</span> <span class="n">ast_sockaddr_port</span><span class="p">(</span><span class="o">&</span><span class="n">tmp</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; "> <span class="n">port</span> <span class="o">=</span> <span class="n">STANDARD_SIP_PORT</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>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_sockaddr_set_port</span><span class="p">(</span><span class="o">&</span><span class="n">tmp</span><span class="p">,</span> <span class="n">port</span><span class="p">);</span> <span class="cm">/* need to set this for ast_sockaddr_cmp below */</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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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">For the sake of readable code, while you're in the neighourhood, I'd move the last bit into an else:
if (ast_sockaddr_resolve_first(&tmp, c, 0)) {
..WARN..
port = STANDARD_SIP_PORT;
} else if (!(port = ast_sockaddr_port(&tmp))) {
...
}
It already works like that, but this ensures it stays working if someone changes code around somewhere else.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I agree with Walter here. It seems a bit odd to check tmp's port if an address could not be resolved.</pre>
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<p>- Mark</p>
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<p>On November 25th, 2012, 10:37 p.m., elguero wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By elguero.</div>
<p style="color: grey;"><i>Updated Nov. 25, 2012, 10:37 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;">While troubleshooting another issue, came across this message in the debug log:
[2012-11-25 19:07:25] DEBUG[13375][C-00000007]: chan_sip.c:17910 check_via: NAT detected for 216.115.69.144:0 / 216.115.69.144:5060
Sending to 216.115.69.144:5060 (NAT)
Upon looking at the code in check_via, I discovered that if the port is not set on the address in the VIA header, the default SIP port is not being set on struct ast_sockaddr tmp which is used to check if the requesting UA might be behind NAT.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </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;">Local dev machine.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-20724">ASTERISK-20724</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>branches/11/channels/chan_sip.c <span style="color: grey">(376416)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2206/diff/" style="margin-left: 3em;">View Diff</a></p>
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