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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2642/">https://reviewboard.asterisk.org/r/2642/</a>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41198#file41198line109" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_bridgewait.c</a>
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(Diff revision 6)
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">static</span> <span class="k">struct</span> <span class="n">ao2_container</span> <span class="o">*</span><span class="n">holding_bridge_wrapper_container</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;">How about to changing the name to wait_bridges? Or if you prefer wait_wrappers.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41198#file41198line111" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_bridgewait.c</a>
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(Diff revision 6)
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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">holding_bridge_wrapper</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">AST_DECLARE_STRING_FIELDS</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_STRING_FIELD</span><span class="p">(</span><span class="n">name</span><span class="p">);</span> <span class="cm">/*!< Name of the holding bridge wrapper */</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_STRING_FIELD</span><span class="p">(</span><span class="n">bridge_id</span><span class="p">);</span> <span class="cm">/*!< Bridge ID the holding bridge wrapper currently links to */</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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<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;">You might be better served if these strings were immutable. As it is you have reentrency problems when the bridge_id changes. Also you don't want to create a lock relationship between the wrappers-container/wrapper and the bridges-container/bridge.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41198#file41198line377" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_bridgewait.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int process_options(struct ast_channel *chan, struct ast_flags *flags, char **opts, struct ast_bridge_features *features)</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><span class="n">holding_bridge</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="n">ao2_lock</span><span class="p">(</span><span class="n">holding_bridge_wrapper_container</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="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_ERROR</span><span class="p">,</span> <span class="s">"Could not create holding bridge for '%s'.</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">ast_channel_name</span><span class="p">(</span><span class="n">chan</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="n">holding_bridge_wrapper</span> <span class="o">=</span> <span class="n">holding_bridge_wrapper_find_by_name</span><span class="p">(</span><span class="n">bridge_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="tb"> </span><span class="tb"> </span><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="#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><span class="n">holding_bridge_wrapper</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">holding_bridge_wrapper</span> <span class="o">=</span> <span class="n">holding_bridge_wrapper_alloc</span><span class="p">(</span><span class="n">bridge_name</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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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ao2_unlock</span><span class="p">(</span><span class="n">holding_bridge_wrapper_container</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;">Reference inconsistency. The find returns a ref while the alloc does not return a ref.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41198#file41198line406" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_bridgewait.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int process_options(struct ast_channel *chan, struct ast_flags *flags, char **opts, struct ast_bridge_features *features)</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">while</span> <span class="p">(</span><span class="mi">1</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;">Use a for (;;) loop instead of while (1).</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41198#file41198line424" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_bridgewait.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int process_options(struct ast_channel *chan, struct ast_flags *flags, char **opts, struct ast_bridge_features *features)</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">ast_bridge_join</span><span class="p">(</span><span class="n">holding_bridge</span><span class="p">,</span> <span class="n">chan</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="o">&</span><span class="n">chan_features</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">==</span> <span class="n">AST_BRIDGE_CHANNEL_STATE_DISSOLVED_BEFORE_ENTRY</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="cm">/* It's possible for a holding bridge to vanish out from under us since we can't lock it.</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 class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * Loop if the bridge we try to enter is dissolved. */</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="k">continue</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;">RAII_VAR and the continue seem to be incompatible here. I think you will leak a ref to holding_bridge here when you restart the loop.
With the change of ast_bridge_join() to return -1 if could not join bridge, you can then check if the bridge is dissolved (using new ast_bridge_is_dissolved() call) and try again with a new bridge.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41199#file41199line99" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/bridging.h</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ast_bridge_channel_state {</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="cm">/*! The channel was unable to join the bridge because it was dissolving. */</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">AST_BRIDGE_CHANNEL_STATE_DISSOLVED_BEFORE_ENTRY</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;">I really dislike this state. It can be done better another way.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41200#file41200line696" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/bridging.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int bridge_channel_push(struct ast_bridge_channel *bridge_channel)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static <span class="hl">in</span>t bridge_channel_push(struct ast_bridge_channel *bridge_channel)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static <span class="hl">enum bridge_channel_push_resul</span>t bridge_channel_push(struct ast_bridge_channel *bridge_channel)</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;">Revert the changes to this function.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41200#file41200line2996" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/bridging.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void bridge_channel_join(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; ">/*! \brief Join a channel to a bridge and handle anything the bridge may want us to do */</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">/*! \brief Join a channel to a bridge and handle anything the bridge may want us to do */</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void bridge_channel_join(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; ">static void bridge_channel_join(struct ast_bridge_channel *bridge_channel)</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;">Change this to return -1 if it failed to join the bridge for whatever reason.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41200#file41200line3029" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/bridging.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void bridge_channel_join(struct ast_bridge_channel *bridge_channel)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="hl"><span class="tb"> </span>if (</span>bridge_channel_push(bridge_channel)<span class="hl">) {</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="hl"><span class="tb"> </span>push_res = </span>bridge_channel_push(bridge_channel)<span class="hl">;</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>switch (push_res) {</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>case BRIDGE_CHANNEL_PUSH_SUCCESS:</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>case BRIDGE_CHANNEL_PUSH_FAILURE_DISSOLVED:</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>ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_DISSOLVED_BEFORE_ENTRY);</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>case BRIDGE_CHANNEL_PUSH_FAILURE:</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>ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_HANGUP);</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>ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_HANGUP);</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;">Revert this and change it to cause bridge_channel_join() to return -1 because the channel failed to get pushed into the bridge for whatever reason.</pre>
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<a href="https://reviewboard.asterisk.org/r/2642/diff/6/?file=41200#file41200line3742" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/bridging.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ast_bridge_channel_state ast_bridge_join(struct ast_bridge *bridge,</pre></td>
<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_bridge_notify_masquerade(struct ast_channel *chan)</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ast_bridge_channel_state ast_bridge_join(struct ast_bridge *bridge,</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ast_bridge_channel_state ast_bridge_join(struct ast_bridge *bridge,</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;">Since nobody currently cares about or checks this return value, it can be redefined. Change it to return -1 if it could not join the bridge for whatever reason and return 0 if the channel was able to join.</pre>
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<p>- rmudgett</p>
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<p>On July 8th, 2013, 6:12 p.m. UTC, jrose wrote:</p>
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<div>Review request for Asterisk Developers, Matt Jordan and rmudgett.</div>
<div>By jrose.</div>
<p style="color: grey;"><i>Updated July 8, 2013, 6:12 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-21922">ASTERISK-21922</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;">Previously the holding bridge used for bridgewait was a single bridge that once created would stick around until the application was unloaded.
Now things are a little more complicated. Each holding bridge has a name and will be destroyed when it is empty. Since it's theoretically possible to have channels enter a holding bridge without going through the bridge wait application, it isn't always possible to deliberately control when the bridge will be destroyed, so the bridge can effectively be abandoned and set to be destroyed once it empties out.</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 multiple simultaneous holding bridges, multiple channels in the same holding bridge, what would happen if one channel entered as another one was leaving but before the bridge was destroyed, tested bridges emptying out, tested module unload and module load after unload.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/apps/app_bridgewait.c <span style="color: grey">(393824)</span></li>
<li>/trunk/include/asterisk/bridging.h <span style="color: grey">(393824)</span></li>
<li>/trunk/main/bridging.c <span style="color: grey">(393824)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2642/diff/" style="margin-left: 3em;">View Diff</a></p>
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