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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/4316/">https://reviewboard.asterisk.org/r/4316/</a>
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<p style="margin-top: 0;">On January 19th, 2015, 10:25 a.m. CST, <b>Joshua Colp</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4316/diff/1/?file=70695#file70695line1394" style="color: black; font-weight: bold; text-decoration: underline;">/branches/13/channels/chan_pjsip.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 transfer_refer(struct ast_sip_session *session, const char *target)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">endpoint</span> <span class="o">=</span> <span class="n">ast_sorcery_retrieve_by_id</span><span class="p">(</span><span class="n">ast_sip_get_sorcery</span><span class="p">(),</span> <span class="s">"endpoint"</span><span class="p">,</span> <span class="n">target</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="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">endpoint</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="tb"> </span><span class="tb"> </span><span class="n">contact</span> <span class="o">=</span> <span class="n">ast_sip_location_retrieve_contact_from_aor_list</span><span class="p">(</span><span class="n">endpoint</span><span class="o">-></span><span class="n">aors</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="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">contact</span> <span class="o">&&</span> <span class="o">!</span><span class="n">ast_strlen_zero</span><span class="p">(</span><span class="n">contact</span><span class="o">-></span><span class="n">uri</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">target</span> <span class="o">=</span> <span class="n">contact</span><span class="o">-></span><span class="n">uri</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="tb"> </span><span class="tb"> </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="tb"> </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;">I think it may be useful to have AOR support here as well.</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;">IRC conversation for posterity:
(01:00:16 PM) mjordan: file: Question! On r4316, when you refer to 'AoR support' - can you point me to a parsing example that does what you would like? I'm thinking that constructing a dial string isn't quite right, since it supports multiple contacts
(01:01:38 PM) file: mjordan, there isn't really one as everything else requires an endpoint
(01:07:25 PM) mjordan: file: Nuts.
(01:08:28 PM) file: mjordan, try to find endpoint, then AOR, then treat as URI?
(01:09:30 PM) mjordan: file: what would you have to specify to do that?
(01:09:35 PM) mjordan: PJSIP/foo/foo?
(01:09:58 PM) file: PJSIP/<endpoint>/<aor> is how a dial string works
(01:10:58 PM) mjordan: Hm.
(01:11:06 PM) mjordan: Except that you then would need a convenience dialplan function
(01:11:18 PM) mjordan: And how would you handle multiple contacts on an AoR in the redirect case?
(01:11:36 PM) file: use the first one, same as you are doing right now
(01:11:45 PM) file: or return all of them as Contacts and see what the endpoint does
(01:11:58 PM) file: HILARITY
(01:12:28 PM) mjordan: heh
(01:12:38 PM) mjordan: I guess I'm trying to see why specifying an AoR would be helpful
(01:13:04 PM) mjordan: What does specifying it buy us in this case, since (almost 99% likely) we only want to place one URI in the Contact header
(01:13:21 PM) mjordan: (And we can specify any arbitrary URI using PJSIP/sip:foo@foo.com)
(01:13:35 PM) file: we allow specifying an explicit AOR elsewhere when dialing so consistency - but if you don't want to I'm not going to fight it
(01:13:51 PM) mjordan: well, it's actually what I wanted initially
(01:14:05 PM) mjordan: I just couldn't see what it was buying me, since I could specify arbitrary URIs (unlike with dialing)
(01:14:11 PM) mjordan: which, unfortunately, makes sense
(01:14:22 PM) mjordan: as with dialing, I need to have codecs, and dialplan contexts, and SRTP, and stuff
(01:14:30 PM) mjordan: but in this case, we're just trying to slap a URI in a header on the way out the door
(01:14:57 PM) file: you could argue with the new PJSIP_AOR and PJSIP_CONTACT dialplan functions you don't need it at all
(01:15:00 PM) mjordan: I suppose if an endpoint had multiple AoRs it would make a difference, but I'm not sure we even look at it
(01:15:03 PM) mjordan: True
(01:15:25 PM) mjordan: shall we punt then?
(01:15:31 PM) file: SURE!</pre>
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<p style="margin-top: 0;">On January 19th, 2015, 10:25 a.m. CST, <b>Joshua Colp</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4316/diff/1/?file=70696#file70696line489" style="color: black; font-weight: bold; text-decoration: underline;">/branches/13/include/asterisk/stasis_app.h</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void stasis_app_control_clear_roles(struct stasis_app_control *control);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="kt">int</span> <span class="nf">stasis_app_control_redirect</span><span class="p">(</span><span class="k">struct</span> <span class="n">stasis_app_control</span> <span class="o">*</span><span class="n">control</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">endpoint</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;">Everything else has doxygen. Why not this?</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;">Bad eyesight?</pre>
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<p>- Matt</p>
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<p>On January 18th, 2015, 9:16 p.m. CST, Matt Jordan wrote:</p>
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<div>Review request for Asterisk Developers and Joshua Colp.</div>
<div>By Matt Jordan.</div>
<p style="color: grey;"><i>Updated Jan. 18, 2015, 9:16 p.m.</i></p>
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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-24015">ASTERISK-24015</a>,
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-24703">ASTERISK-24703</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<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;">This patch adds a new feature to ARI to redirect a channel to another server, and fixes a few bugs in PJSIP's handling of the Transfer dialplan application/ARI redirect capability.
*New Feature*
A new operation has been added to the ARI channels resource, redirect. With this, a channel in a Stasis application can be redirected to another endpoint of the same underlying channel technology.
- Preemptive question: why 'redirect', and not 'transfer'? Mostly because 'transfer' was always kind of a bad name. If the channel isn't answered, we aren't transferring, we're forwarding. If it is answered, the type of transfer being performed is somewhat vague - is it blind? Is it attended? 'redirect' - while also a slightly loaded term - is a bit more generic and yet descriptive of what is happening: we're redirecting the channel to somewhere else. Answered, not answered, it doesn't matter: your channel is no good here!
*Bug fixes*
In the process of writing this new feature, two bugs were fixed in the PJSIP stack:
(1) The existing .transfer channel callback had the limitation that it could only transfer channels to a SIP URI, i.e., you had to pass 'PJSIP/sip:foo@my_provider.com' to the dialplan application. While this is still supported, it is somewhat unintuitive - particularly in a world full of endpoints. As such, we now also support specifying the PJSIP endpoint to transfer to.
(2) res_pjsip_multihomed was, unfortunately, trying to 'help' a 302 redirect by updating its Contact header. Alas, that resulted in the forwarding destination set by the dialplan application/ARI resource/whatever being rewritten with very incorrect information. Hence, we now don't bother updating an outgoing response if it is a 302. Since this took a looong time to find, some additional debug statements have been added to those modules that update the Contact headers.</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;">Tests were written both for the PJSIP stack as well as the new ARI operation. See https://reviewboard.asterisk.org/r/4352.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/13/rest-api/api-docs/channels.json <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/stasis/control.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/res_pjsip_transport_websocket.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/res_pjsip_nat.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/res_pjsip_multihomed.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/res_ari_channels.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/ari/resource_channels.c <span style="color: grey">(430751)</span></li>
<li>/branches/13/res/ari/resource_channels.h <span style="color: grey">(430751)</span></li>
<li>/branches/13/include/asterisk/stasis_app.h <span style="color: grey">(430751)</span></li>
<li>/branches/13/channels/chan_pjsip.c <span style="color: grey">(430751)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/4316/diff/" style="margin-left: 3em;">View Diff</a></p>
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