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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1698/">https://reviewboard.asterisk.org/r/1698/</a>
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<p style="margin-top: 0;">On January 27th, 2012, 7:54 a.m., <b>Simon Perreault</b> wrote:</p>
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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;">Looks good.
It is similar to what Cisco SBC does:
http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/sbcu/sbc_nat.html#wp1000953
Could nat=auto become the new default?</pre>
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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;">It seems like it would be a good default. I figure maybe we leave it in for a while for some testing then switch if it works well. It's definitely a discussion to have on the mailing list at some point, though.</pre>
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<p style="margin-top: 0;">On January 27th, 2012, 7:54 a.m., <b>Simon Perreault</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1698/diff/2/?file=23678#file23678line16228" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_sip.c</a>
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(Diff revision 2)
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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; "> <span class="n">ast_debug</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="s">"Global nat=auto, so force nat=yes so we reply to non-peers like we would peers.</span><span class="se">\n</span><span class="s">"</span><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;">The use of the term "peer" is confusing me. I have no idea what the sentence means.</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;">Yeah, that sentence is confusing. I threw it in to remind me what was going on. Basically, we set the flags on the sip_pvt so that even if we are getting a request (say, a REGISTER) that doesn't match a peer, we can still reply the same way that we would if we matched a peer to avoid leaking information about peers defined on the system. I'll re-word it.</pre>
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<p>- Terry</p>
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<p>On January 26th, 2012, 8:28 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, 8:28 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'm putting the original patch up, then will immediately add a review with my changes. Many thanks to pedro-garcia for his contribution.
>From the JIRA issue:
I have some devices in the following scenario:
Asterisk server with public IP address
Mobile devices (clients):
When in internal network, no NAT between the client and the server
When in "roaming" (i.e. a Hotel with WiFi), the client is behing a NAT
When in 3G, operator transparent sip proxy so it looks as no NAT, but does not support symmetric RTP.
Sometime, the device gets a public IP with no NAT at all.
No NAT setting available in asterisk works for all these scenarios at the same time, and I can not request the user to activate different accounts depending on its location.
I have added a new NAT setting (nat=auto) to the current ones. When set, chan_sip auto detects from the Via header, the recv sockaddr, and the rport setting if the client is behind a NAT.
It also adds to cli interface results (sip show peer/s) info on this (so now you could see "N" for NAT and nothing for no NAT as before, "a" for auto detect no NAT, and "A" for autodetect 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;">Lots of reloads with changing values, and registry natted and un-natted phones. I also set the nat_supertest in testsuite to run with nat=auto to make sure that it responded the same with existing and non-existing peers.</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-17860">ASTERISK-17860</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/channels/chan_sip.c <span style="color: grey">(352610)</span></li>
<li>/trunk/channels/sip/include/sip.h <span style="color: grey">(352610)</span></li>
<li>/trunk/configs/sip.conf.sample <span style="color: grey">(352610)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1698/diff/" style="margin-left: 3em;">View Diff</a></p>
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