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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1353/">https://reviewboard.asterisk.org/r/1353/</a>
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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 parent pointer approach bothers me because it can become stale easily.
After Party A's call is picked up by Party B, the call has a parent pointer that is no longer needed.
If Party B then attended-transfers the call to Party C and Party D does a call pickup, will the parent pointer be pointing to Party A or Party B of the transfer?
If Party A transfers Party B to Party C what does Party B's parent pointer point to? A nonexistent Party A?
Am I right in thinking that this is a race between the pickup masquerade and ast_hangup? Is the pickup masquerade being setup into the channel after ast_hangup is called by the dial app? The masquerade would then happen to a dead channel.
What happens if Party A hangs up while Party B is attempting to pickup the call? This would be a similar race situation that would be much harder to recognize in the field.</pre>
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<a href="https://reviewboard.asterisk.org/r/1353/diff/5/?file=19224#file19224line6956" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/features.c</a>
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(Diff revision 5)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int manager_park(struct mansession *s, const struct message *m)</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="n">parent</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">ast_channel_lock</span><span class="p">(</span><span class="n">parent</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ast_channel_datastore_find</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="o">&</span><span class="n">pickup_active</span><span class="p">,</span> <span class="nb">NULL</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">ast_channel_unlock</span><span class="p">(</span><span class="n">parent</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="k">return</span> <span class="mi">1</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="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">ast_channel_unlock</span><span class="p">(</span><span class="n">parent</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="k">return</span> <span class="mi">0</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="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;">When getting the locks for two channels, you must do deadlock avoidance. chan and chan->parent in this case
You probably should not use the value put in parent until you have the necessary locks to avoid the possibility that parent has become inconsistent with chan->parent.
I also think that you must get the chan->parent lock first thing in this function because pickup conditions can change on you while doing deadlock avoidance.</pre>
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<a href="https://reviewboard.asterisk.org/r/1353/diff/5/?file=19224#file19224line7041" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/features.c</a>
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(Diff revision 5)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pickup_call(struct ast_channel *chan)</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="n">parent</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="cm">/* Mark the target's parent to block any call pickup race. */</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">parent_ds_pickup</span> <span class="o">=</span> <span class="n">ast_datastore_alloc</span><span class="p">(</span><span class="o">&</span><span class="n">pickup_active</span><span class="p">,</span> <span class="nb">NULL</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">parent_ds_pickup</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">ast_log</span><span class="p">(</span><span class="n">LOG_WARNING</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="s">"Unable to create parent channel datastore on '%s' for call pickup</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">parent</span><span class="o">-></span><span class="n">name</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="k">return</span> <span class="o">-</span><span class="mi">1</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="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">ast_channel_lock</span><span class="p">(</span><span class="n">parent</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>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">7050</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_datastore_add</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">parent_ds_pickup</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_channel_unlock</span><span class="p">(</span><span class="n">parent</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="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="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="cm">/* Mark the target to block any call pickup race. */</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">/* Mark the target to block any call pickup race. */</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">ds_pickup</span> <span class="o">=</span> <span class="n">ast_datastore_alloc</span><span class="p">(</span><span class="o">&</span><span class="n">pickup_active</span><span class="p">,</span> <span class="nb">NULL</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">ds_pickup</span> <span class="o">=</span> <span class="n">ast_datastore_alloc</span><span class="p">(</span><span class="o">&</span><span class="n">pickup_active</span><span class="p">,</span> <span class="nb">NULL</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="o">!</span><span class="n">ds_pickup</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="o">!</span><span class="n">ds_pickup</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></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></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="s">"Unable to create channel datastore on '%s' for call pickup</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">target_name</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="s">"Unable to create<span class="hl"> target</span> channel datastore on '%s' for call pickup</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">target_name</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="k">if</span> <span class="p">(</span><span class="n">parent</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>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">7060</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_lock</span><span class="p">(</span><span class="n">parent</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ast_channel_datastore_remove</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">parent_ds_pickup</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="n">ast_datastore_free</span><span class="p">(</span><span class="n">parent_ds_pickup</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="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">ast_channel_unlock</span><span class="p">(</span><span class="n">parent</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="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">return</span> <span class="o">-</span><span class="mi">1</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">return</span> <span class="o">-</span><span class="mi">1</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="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_channel_datastore_add</span><span class="p">(</span><span class="n">target</span><span class="p">,</span> <span class="n">ds_pickup</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_channel_datastore_add</span><span class="p">(</span><span class="n">target</span><span class="p">,</span> <span class="n">ds_pickup</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;">You must mark the target before you can mark the parent because you must do deadlock avoidance between the target and target->parent. You cannot release the target lock before marking the target or you reintroduce the earlier pickup race.</pre>
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<a href="https://reviewboard.asterisk.org/r/1353/diff/5/?file=19224#file19224line7116" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/features.c</a>
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(Diff revision 5)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_do_pickup(struct ast_channel *chan, 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="n">ast_channel_lock</span><span class="p">(</span><span class="n">target</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_channel_lock</span><span class="p">(</span><span class="n">target</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="o">!</span><span class="n">ast_channel_datastore_remove</span><span class="p">(</span><span class="n">target</span><span class="p">,</span> <span class="n">ds_pickup</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="o">!</span><span class="n">ast_channel_datastore_remove</span><span class="p">(</span><span class="n">target</span><span class="p">,</span> <span class="n">ds_pickup</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_datastore_free</span><span class="p">(</span><span class="n">ds_pickup</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_datastore_free</span><span class="p">(</span><span class="n">ds_pickup</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="#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; "> <span class="k">if</span> <span class="p">(</span><span class="n">parent</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">ast_channel_lock</span><span class="p">(</span><span class="n">parent</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="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ast_channel_datastore_remove</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="n">parent_ds_pickup</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="n">ast_datastore_free</span><span class="p">(</span><span class="n">parent_ds_pickup</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="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_channel_unlock</span><span class="p">(</span><span class="n">parent</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="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;">Remove the parent datastore before re-acquiring the target lock to avoid needing deadlock avoidance.</pre>
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<p>- rmudgett</p>
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<p>On August 26th, 2011, 7:02 a.m., Alec Davis wrote:</p>
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<div>Review request for Asterisk Developers and rmudgett.</div>
<div>By Alec Davis.</div>
<p style="color: grey;"><i>Updated Aug. 26, 2011, 7:02 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;">If ast_can_pickup() can pickup the target channel, it also needs to check that the originating parent channel isn't being picked up from one of the other spawned the calls.
Example dialplan below causes a segfault as ast-hangup removes the same channel as is being picked up.
How to crash it!
dial 801 from 1 phone.
from 2 phones simultaneously dial 800.
result = segfault!
or segfault with 2 dahdi channels:
dial 803 from 1 phone.
from 2 phones simultaneously dial *8
result = segfault!
or NULL objects and orpaned channel
dial 801 or 802 from 1 phone.
from 2 phones simultaneously dial *8
result = an orphaned channel!
exten => 800,1,NoOp(Local pickup: Pickup through Localchan call)
exten => 800,n,Dial(Local/824@en-pickup&Local/823@en-pickup)
exten => 801,1,NoOp(Local pickup debug: Ring Phones)
exten => 801,n,Dial(Local/823@en-phone&Local/824@en-phone)
exten => 802,1,Dial(SIP/gxp-823&SIP/gxp-824)
exten => 803,1,Dial(DAHDI/33&DAHDI/35)
[en-pickup]
exten => _[0-9*#]!, 1, PickupChan(Local/${EXTEN}@en-phone)
[en-phone]
exten => _[0-9*#]!, 1, Dial(SIP/gxp-${EXTEN},20,rwt)</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;">Confirmed no orphaned channels, and no NULL object messages with DAHDI, SIP and LOCALCHAN calls
Example below where parent is updated sucessfully to head caller
-- Executing [801@phones:1] NoOp("SIP/snom8929-0000000b", "Debug Localchan Pickup, Ring Phones") in new stack
-- Executing [801@phones:2] Dial("SIP/snom8929-0000000b", "Local/823@en_phone&Local/824@en_phone") in new stack
[2011-08-26 22:09:26.246139] NOTICE[21577]: channel.c:5712 ast_call: ALEC parent=SIP/snom8929-0000000b
-- Called Local/823@en_phone
-- Executing [823@en_phone:1] Dial("Local/823@en_phone-9edc;2", "SIP/gxp-823,20,rwt") in new stack
== Using UDPTL CoS mark 5
== Using SIP RTP CoS mark 5
[2011-08-26 22:09:26.252722] NOTICE[21577]: channel.c:5712 ast_call: ALEC parent=SIP/snom8929-0000000b
-- Called Local/824@en_phone
-- Executing [824@en_phone:1] Dial("Local/824@en_phone-41b8;2", "SIP/gxp-824,20,rwt") in new stack
== Using UDPTL CoS mark 5
== Extension Changed 823[phones] new state Ringing for Notify User gxp-823
== Extension Changed 823[phones] new state Ringing for Notify User gxp-824
== Extension Changed 823[phones] new state Ringing for Notify User snom8929
== Using SIP RTP CoS mark 5
[2011-08-26 22:09:26.265837] NOTICE[21578]: channel.c:5712 ast_call: ALEC parent=SIP/snom8929-0000000b
-- Called SIP/gxp-823
-- Local/823@en_phone-9edc;1 is ringing
-- Local/823@en_phone-9edc;1 connected line has changed. Saving it until answer for SIP/snom8929-0000000b
-- Local/823@en_phone-9edc;1 connected line has changed. Saving it until answer for SIP/snom8929-0000000b
== Extension Changed 824[phones] new state Ringing for Notify User gxp-823
== Extension Changed 824[phones] new state Ringing for Notify User gxp-824
== Extension Changed 824[phones] new state Ringing for Notify User snom8929
[2011-08-26 22:09:26.277966] NOTICE[21579]: channel.c:5712 ast_call: ALEC parent=SIP/snom8929-0000000b
-- Called SIP/gxp-824
-- Local/824@en_phone-41b8;1 is ringing
-- Local/824@en_phone-41b8;1 connected line has changed. Saving it until answer for SIP/snom8929-0000000b
-- Local/824@en_phone-41b8;1 connected line has changed. Saving it until answer for SIP/snom8929-0000000b
-- SIP/gxp-823-0000000c is ringing
-- Executing [800@phones:1] NoOp("SIP/gxp-824-00000013", "Debug Localchan pickup") in new stack
-- Executing [800@phones:2] Dial("SIP/gxp-824-00000013", "Local/824@en_pickup&Local/823@en_pickup") in new stack
== Using SIP RTP CoS mark 5
[2011-08-26 22:11:19.238111] NOTICE[21592]: channel.c:5712 ast_call: ALEC parent=SIP/gxp-824-00000013
-- Called Local/824@en_pickup
== Extension Changed 823[phones] new state InUse&Ringing for Notify User gxp-823
== Extension Changed 823[phones] new state InUse&Ringing for Notify User gxp-824
== Extension Changed 823[phones] new state InUse&Ringing for Notify User snom8929
-- Executing [824@en_pickup:1] PickupChan("Local/824@en_pickup-c63b;2", "Local/824@en_phone") in new stack
[2011-08-26 22:11:19.248294] NOTICE[21592]: channel.c:5712 ast_call: ALEC parent=SIP/gxp-824-00000013
-- Called Local/823@en_pickup
-- Local/824@en_pickup-c63b;1 connected line has changed. Saving it until answer for SIP/gxp-824-00000013
-- Executing [823@en_pickup:1] PickupChan("Local/823@en_pickup-7a9f;2", "Local/823@en_phone") in new stack
-- Local/824@en_pickup-c63b;1 answered SIP/gxp-824-00000013
[2011-08-26 22:11:19.250604] NOTICE[21595]: app_directed_pickup.c:375 pickupchan_exec: No target channel found for Local/823@en_phone.
-- Executing [800@phones:1] NoOp("SIP/gxp-823-00000014", "Debug Localchan pickup") in new stack
-- Executing [800@phones:2] Dial("SIP/gxp-823-00000014", "Local/824@en_pickup&Local/823@en_pickup") in new stack
-- Auto fallthrough, channel 'Local/823@en_pickup-7a9f;2' status is 'UNKNOWN'
[2011-08-26 22:11:19.267860] NOTICE[21594]: channel.c:5712 ast_call: ALEC parent=SIP/gxp-823-00000014
-- Called Local/824@en_pickup
-- Executing [824@en_pickup:1] PickupChan("Local/824@en_pickup-c8ca;2", "Local/824@en_phone") in new stack
[2011-08-26 22:11:19.272006] NOTICE[21594]: channel.c:5712 ast_call: ALEC parent=SIP/gxp-823-00000014
-- Called Local/823@en_pickup
[2011-08-26 22:11:19.274014] NOTICE[21596]: app_directed_pickup.c:375 pickupchan_exec: No target channel found for Local/824@en_phone.
-- Auto fallthrough, channel 'Local/824@en_pickup-c8ca;2' status is 'UNKNOWN'
-- Executing [823@en_pickup:1] PickupChan("Local/823@en_pickup-dc84;2", "Local/823@en_phone") in new stack
[2011-08-26 22:11:19.276514] NOTICE[21597]: app_directed_pickup.c:375 pickupchan_exec: No target channel found for Local/823@en_phone.
-- Auto fallthrough, channel 'Local/823@en_pickup-dc84;2' status is 'UNKNOWN'
== Everyone is busy/congested at this time (2:0/0/2)
-- Auto fallthrough, channel 'SIP/gxp-823-00000014' status is 'CHANUNAVAIL'
asterix*CLI> core show channels
Channel Location State Application(Data)
SIP/gxp-824-00000013 800@phones:2 Up Dial(Local/824@en_pickup&Local
SIP/snom8929-0000001 (None) Up AppDial((Outgoing Line))
2 active channels
1 active call
</pre>
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<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-18222">ASTERISK-18222</a>,
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-18273">ASTERISK-18273</a>
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>trunk/channels/chan_local.c <span style="color: grey">(333199)</span></li>
<li>trunk/include/asterisk/channel.h <span style="color: grey">(333199)</span></li>
<li>trunk/main/channel.c <span style="color: grey">(333199)</span></li>
<li>trunk/main/features.c <span style="color: grey">(333199)</span></li>
</ul>
<p><a href="https://reviewboard.asterisk.org/r/1353/diff/" style="margin-left: 3em;">View Diff</a></p>
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