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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/3997/">https://reviewboard.asterisk.org/r/3997/</a>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line151" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static enum ast_rtp_glue_result native_rtp_bridge_get(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp_glue **glue0,</pre></td>
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<td bgcolor="#fdfebc" 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">c0</span> <span class="o">==</span> <span class="n">c1</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" 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="o"><span class="hl">!</span></span><span class="n"><span class="hl">bc0</span></span><span class="hl"> </span><span class="o"><span class="hl">||</span></span><span class="hl"> </span><span class="o"><span class="hl">!</span></span><span class="n"><span class="hl">bc1</span></span><span class="hl"> </span><span class="o"><span class="hl">||</span></span><span class="hl"> </span><span class="n"><span class="hl">b</span>c0</span> <span class="o">==</span> <span class="n"><span class="hl">b</span>c1</span><span class="p">)</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;">The same pointer check was to detect that there was only one channel in the bridge and shouldn't be necessary anymore.
The NULL checks are necessary though. :)</pre>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line220" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static enum ast_rtp_glue_result native_rtp_bridge_get(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp_glue **glue0,</pre></td>
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<td bgcolor="#fdfebc" 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">c0</span> <span class="o">==</span> <span class="n"><span class="hl">c1</span></span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" 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="o"><span class="hl">!</span></span><span class="n"><span class="hl">bc0</span></span><span class="hl"> </span><span class="o"><span class="hl">||</span></span><span class="hl"> </span><span class="o"><span class="hl">!</span></span><span class="n"><span class="hl">bc1</span></span><span class="hl"> </span><span class="o"><span class="hl">||</span></span><span class="hl"> </span><span class="n"><span class="hl">b</span>c0</span> <span class="o">==</span> <span class="n"><span class="hl">bc0</span></span><span class="p">)</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;">bc0 == bc0 ?
The same pointer check was to detect that there was only one channel in the bridge and shouldn't be necessary anymore.
The NULL checks are necessary though. :)</pre>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line255" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void native_rtp_bridge_stop(struct ast_bridge *bridge, struct ast_channel *target)</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * receive mediafrom sterisk instead of what it was previously connected to.</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * receive mediafrom sterisk instead of what it was previously connected to.</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;">sterisk?</pre>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line490" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int native_rtp_bridge_join(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel)</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">bridge_channel</span> <span class="o">!=</span> <span class="n">pvt</span><span class="o">-></span><span class="n">bc0</span> <span class="o">&&</span> <span class="n">bridge_channel</span> <span class="o">!=</span> <span class="n">pvt</span><span class="o">-></span><span class="n">bc1</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>
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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">ast_log</span><span class="p">(</span><span class="n">LOG_WARNING</span><span class="p">,</span> <span class="s">"%s is not in native RTP bridge %s!</span><span class="se">\n</span><span class="s">"</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="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_channel_name</span><span class="p">(</span><span class="n">bridge_channel</span><span class="o">-></span><span class="n">chan</span><span class="p">),</span> <span class="n">bridge</span><span class="o">-></span><span class="n">uniqueid</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="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;">Missing return? The channel cannot leave if not part of the bridge tech.</pre>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line498" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int native_rtp_bridge_join(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel)</pre></td>
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<td bgcolor="#ffffff" 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="o">!</span><span class="n">glue</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="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">glue</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">ast_log</span><span class="p">(</span><span class="n">LOG_WARNING</span><span class="p">,</span> <span class="s">"%s had no RTP glue and could not be removed from bridge</span><span class="se">\n</span><span class="s">"</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">ast_channel_name</span><span class="p">(</span><span class="n">bridge_channel</span><span class="o">-></span><span class="n">chan</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="tb"> </span><span class="tb"> </span><span class="k">return</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="tb"> </span><span class="tb"> </span><span class="k">return</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="tb"> </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="tb"> </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;">Shouldn't the pvt->bcx pointer be cleared anyway since we have just confirmed that it is in the pvt struct?</pre>
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<a href="https://reviewboard.asterisk.org/r/3997/diff/1/?file=67399#file67399line548" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/bridges/bridge_native_rtp.c</a>
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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">ast_free</span><span class="p">(</span><span class="n">pvt</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="n">bridge</span><span class="o">-></span><span class="n">tech_pvt</span> <span class="o">=</span> <span class="nb">NULL</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;">For safety (high paranoia level :) ), you might want to swap the order of these lines.</pre>
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<p>- rmudgett</p>
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<p>On October 5th, 2014, 6:08 p.m. CDT, Matt Jordan wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Matt Jordan.</div>
<p style="color: grey;"><i>Updated Oct. 5, 2014, 6:08 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-24237">ASTERISK-24237</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;">When a native RTP bridge that is remotely bridging its participants switches to a softmix bridge, it may not properly re-INVITE the media for one or both participants back to Asterisk. This is due to two factors:
(1) The current bridge_native_rtp code only re-INVITEs if it believes the channel will survive the bridge operation. Currently, that code is failing, as it expects the channels to have a soft hangup flag set on it indicating that a redirect has occurred or that the channel is going to leave the bridge. (The code did not take into account a smart bridge operation).
(2) When the bridge layer performs a smart bridge, it passes a dummy bridge down into the old mixing technology when it is stopped. That breaks the native RTP bridge, as it looks to bridge->channels to know which channels to re-INVITE back. That list has no entries, as the dummy bridge does not populate that value.
This patch modifies bridge_native_rtp such that it keeps track of the channels itself. Given how tricky this code is - both smart bridging and native RTP bridging - this keeps the mixing technology insulated from changes in the core, which is probably a good thing.</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;">The tests that extercised this code the most are the PJSIP blind transfer tests, as they change the bridge mixing technology from native_rtp to simple and back in various tests. Shocking the callee_with_hold/caller_with_hold tests worked right off the bat. The direct media tests still fail, but this is not surprising as the messages from Asterisk arrive interleaved, which is not something SIPp handles well (at all).
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/12/bridges/bridge_native_rtp.c <span style="color: grey">(423232)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/3997/diff/" style="margin-left: 3em;">View Diff</a></p>
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