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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2363/">https://reviewboard.asterisk.org/r/2363/</a>
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<p style="margin-top: 0;">On March 8th, 2013, 4:59 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2363/diff/3/?file=33844#file33844line196" style="color: black; font-weight: bold; text-decoration: underline;">/team/group/pimp_my_sip/include/asterisk/res_sip_session.h</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct ast_sip_session_sdp_handler {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \brief Update media stream with external address if applicable</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \param tdata The outgoing message itself</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \param stream The stream on which to operate</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \param transport The transport the SDP is going out on</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">void</span> <span class="p">(</span><span class="o">*</span><span class="n">change_outgoing_sdp_stream</span><span class="p">)(</span><span class="k">struct</span> <span class="n">pjsip_tx_data</span> <span class="o">*</span><span class="n">tdata</span><span class="p">,</span> <span class="k">struct</span> <span class="n">pjmedia_sdp_media</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="k">struct</span> <span class="n">ast_sip_transport</span> <span class="o">*</span><span class="n">transport</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;">This is a good change, but I don't think it's all the way to what it should be.
I think you should go one of two ways with this callback
1) If this callback is solely intended to be used in order to change media addresses within SDPs, then the callback name should reflect that more. In addition, the callback should contain parameters for what addresses should be changed and what they should be changed to. What's interesting about this is that the same callback could potentially be used for changing the media addresses to use a direct media address.
2) If this callback could potentially be used for other SDP amendments, then there should be a parameter that tells the SDP handler why this function is being called. This way, if it gets called with, say, AST_SIP_SDP_CHANGE_NAT, then it knows that it's being called to change the localnet addresses to external addresses. Some other value would mean something else should be changed.</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've changed the callback name to be specific that it is for changing the media stream. What that actually means I've left up to the SDP handler itself. As for using this to change a direct media address... I suppose you could, but you still need to do the codec part as well.</pre>
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<p style="margin-top: 0;">On March 8th, 2013, 4:59 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2363/diff/3/?file=33849#file33849line177" style="color: black; font-weight: bold; text-decoration: underline;">/team/group/pimp_my_sip/res/res_sip_sdp_audio.c</a>
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(Diff revision 3)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void audio_add_ice_to_stream(struct ast_sip_session *session, pj_pool_t *pool, pjmedia_sdp_media *media)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">ast_str</span> <span class="o">*</span><span class="n">attr_candidate</span> <span class="o">=</span> <span class="n">ast_str_create</span><span class="p">(</span><span class="mi">128</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;">You don't have to, but you could use RAII_VAR for this allocation.</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 didn't bother with this. Doesn't really gain you anything.</pre>
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<p>- Joshua</p>
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<p>On March 6th, 2013, 6:04 a.m., Joshua Colp wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Joshua Colp.</div>
<p style="color: grey;"><i>Updated March 6, 2013, 6:04 a.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;">This change adds a new module, res_sip_nat, which performs rewriting of outgoing messages for cases where address information needs to be replaced when Asterisk is behind NAT. It also performs rewriting of incoming messages for cases where the remote party may be behind NAT. This change also adds ICE support.</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;">Tested Asterisk behind NAT with proper configuration, as well as devices behind NAT. Also tested ICE negotiation.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/team/group/pimp_my_sip/include/asterisk/res_sip.h <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/include/asterisk/res_sip_session.h <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/config_transport.c <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_configuration.c <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_distributor.c <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_nat.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_sdp_audio.c <span style="color: grey">(382479)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_session.c <span style="color: grey">(382479)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2363/diff/" style="margin-left: 3em;">View Diff</a></p>
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