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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1229/">https://reviewboard.asterisk.org/r/1229/</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 changes to pbx.c and pbx.h are duplicating a lot of code. Why is this patch not using the Gosub application to handle the predial execution? You can now use the relatively new ast_app_run_sub() function to execute the predial dialplan.
A concern that was brought up earlier that has not been addressed is that executing dialplan takes an indeterminate amount of time that could be quite lengthy. The main loop that parses the various dialed destinations should be broken up into three loops.
for () {
ast_request()
callee_predial_gosub()
ast_call()
}
becomes
for () {
ast_request()
}
for () {
callee_predial_gosub()
}
for () {
ast_call()
}
Also while the loop handling the predial execution is in progress, the caller channel needs to be put into autoservice.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26174#file26174line608" style="color: black; font-weight: bold; text-decoration: underline;">trunk/apps/app_dial.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; ">enum {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cp">#define OPT_PREDIAL_CALLEE_GOSUB (1LLU << 41)</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cp">#define OPT_PREDIAL_CALLER_GOSUB (1LLU << 42)</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;">This isn't following the naming convention of the other flags. Should be OPT_CALLEE_PREDIAL/OPT_CALLER_PREDIAL the gosub specifier shouldn't be needed because there will not be a macro version.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26174#file26174line629" style="color: black; font-weight: bold; text-decoration: underline;">trunk/apps/app_dial.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">OPT_ARG_PREDIAL_CALLER_GOSUB</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">OPT_ARG_PREDIAL_CALLEE_GOSUB</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;">Same here.
OPT_ARG_CALLER_PREDIAL/OPT_ARG_CALLEE_PREDIAL</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26174#file26174line2191" style="color: black; font-weight: bold; text-decoration: underline;">trunk/apps/app_dial.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">OPT_CANCEL_TIMEOUT</span> <span class="o">|</span> <span class="n">OPT_ANNOUNCE</span> <span class="o">|</span> <span class="n">OPT_CALLEE_MACRO</span> <span class="o">|</span> <span class="n">OPT_CALLEE_GOSUB</span> <span class="o">|</span> <span class="n">OPT_FORCECLID</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="n">OPT_CANCEL_TIMEOUT</span> <span class="o">|</span> <span class="n">OPT_ANNOUNCE</span> <span class="o">|</span> <span class="n">OPT_CALLEE_MACRO</span> <span class="o">|</span> <span class="n">OPT_CALLEE_GOSUB</span> <span class="o">|</span> <span class="n">OPT_FORCECLID</span><span class="hl"> </span><span class="o"><span class="hl">|</span></span><span class="hl"> </span><span class="n"><span class="hl">OPT_PREDIAL_CALLER_GOSUB</span></span><span class="hl"> </span><span class="o"><span class="hl">|</span></span><span class="hl"> </span><span class="n"><span class="hl">OPT_PREDIAL_CALLEE_GOSUB</span></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;">This change is not necessary since the flags are not needed outside of this function.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26174#file26174line2195" style="color: black; font-weight: bold; text-decoration: underline;">trunk/apps/app_dial.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)</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_channel</span> <span class="o">*</span><span class="n">c</span> <span class="o">=</span> <span class="n">chan</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;">Why declare a new variable? Just use chan.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26174#file26174line2439" style="color: black; font-weight: bold; text-decoration: underline;">trunk/apps/app_dial.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast_flags64 *peerflags, int *continue_exec)</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_channel</span> <span class="o">*</span><span class="n">c</span> <span class="o">=</span> <span class="n">tc</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;">Why declare a new variable? Just use tc.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10891" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</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_str_truncate</span><span class="p">(</span><span class="n">exten</span><span class="p">,</span> <span class="mi">0</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;">Mixing tabs/spaces after comma.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10894" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</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">varshead</span> <span class="o">&&</span> <span class="p">((</span><span class="n">start_args</span> <span class="o">=</span> <span class="n">strchr</span><span class="p">(</span><span class="n">start_args</span><span class="p">,</span> <span class="sc">'('</span><span class="p">))</span> <span class="o">!=</span> <span class="nb">NULL</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;">This code is only going to remove arguments from the input string if there is a place to put them. Any arguments should always be removed from the input string so the context,exten,priority can be properly handled.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10901" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</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">end_args</span> <span class="o">=</span> <span class="n">strchr</span><span class="p">(</span><span class="n">start_args</span><span class="p">,</span> <span class="sc">')'</span><span class="p">))</span> <span class="o">!=</span> <span class="nb">NULL</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;">This should be a strrchr in case there are nested parentheses in the argument.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10903" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</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="k">else</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;">format
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10934" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</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> <span class="s">"priority based goto target not found: %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">goto_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="n">ipriority</span> <span class="o">=</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="k">return</span> <span class="o">-</span><span class="mi">1</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;">These lines are mixing tabs/spaces for indention.
Also ipriority is set but not used. Potential compiler warning.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10941" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ipriority</span> <span class="o">=</span> <span class="mi">0</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;">ipriority set but not used.</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line10989" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">enum</span> <span class="n">ast_pbx_result</span> <span class="nf">ast_pbx_exten_run_parseargs</span><span class="p">(</span><span class="k">struct</span> <span class="n">ast_channel</span> <span class="o">*</span><span class="n">chan</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">gosub_args</span><span class="p">,</span> <span class="kt">int</span> <span class="n">restore_dialplan_location</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;">Spaces used instead of tabs for a few lines in this function.
memset()
AST_LIST_TRAVERSE_SAFE_BEGIN
AST_LIST_TRAVERSE_SAVE_END</pre>
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<a href="https://reviewboard.asterisk.org/r/1229/diff/5/?file=26176#file26176line11059" style="color: black; font-weight: bold; text-decoration: underline;">trunk/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_pbx_exten_parse(struct ast_channel *chan, const char *goto_target, struct ast_str *context, struct ast_str *exten, struct ast_str *priority, struct varshead *varshead)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">memset</span><span class="p">(</span><span class="o">&</span><span class="n">run_args</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="k">sizeof</span><span class="p">(</span><span class="n">run_args</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;">Spaces used instead of tabs for this line.</pre>
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<p>- rmudgett</p>
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<p>On March 15th, 2012, 12:49 p.m., kobaz wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By kobaz.</div>
<p style="color: grey;"><i>Updated March 15, 2012, 12:49 p.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;">PreDial
Say SIP/abc is calling SIP/def
You have: Dial(SIP/def)
SIP/def-123234 is created. But how can you tell that from dialplan?
You can use a pickup macro: M or U options to Dial(), but you have to wait till pickup to know.
'PreDial' new option 'b' to Dial(), will let you run dialplan on the newly created channel before it is connected to the end-device.
New way:
Dial(SIP/def,,b(predial,s,1))
Dialplan will run on SIP/def-123234 and allow you to know right away what channel will be used, and you can set specific variables on that channel.
You can also run dialplan on the caller channel (option 'B') right before the dial, which is a great place to do a last microsecond UNLOCK to ensure good channel behavior.
Example: LOCK(foo)
do stuff
UNLOCK(foo)
Dial(SIP/abc)
With this above example, say SIP/123 and SIP/234 are running this dialplan.
SIP/123 locks foo
SIP/123 unlocks foo
due to some cpu load issue, SIP/123 takes its time getting to Dial(SIP/abc) and doesn't do it right away
Meanwhile... SIP/234 zips right by, lock 'foo' is already unlocked, it grabs the lock, does its thing and it gets to Dial(SIP/abc). SIP/123 wakes up and finally gets to the Dial(). Now you have two channels dialing SIP/abc when there was supposed to be one.
If your intention is to ensure that Dial(SIP/abc) is only done one at a time, you may have unexpected behavior lurking.
New way:
LOCK(foo)
do stuff
Dial(SIP/abc,,B(unlock,s,1))
context unlock {
s => {
UNLOCK(foo);
}
}
Now, under no circumstances can this dialplan be run through and execute the Dial unless lock 'foo' is released.
Obviously this doesn't ensure that you're not calling SIP/abc more than once (you would need more dialplan logic for that), but it will allow a dialplan coder to also put the Dial in the locked section to ensure tighter control.</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;">context predial {
s => {
NoOp(I'm Here!);
}
}
Dial(SIP/def,,I(predial,s,1))
run predial on callee channel
Dial(SIP/def&SIP/ghi&SIP/qrx,,I(predial,s,1))
runs predial on all three callee channels
Dial(SIP/def,,B(predial,s,1))
runs predial on caller channel
Dial(SIP/def,,B(predial,s,1)I(predial,s,1))
runs predial on callee channel and caller channel</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_dial.c <span style="color: grey">(359606)</span></li>
<li>trunk/include/asterisk/pbx.h <span style="color: grey">(359606)</span></li>
<li>trunk/main/pbx.c <span style="color: grey">(359606)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1229/diff/" style="margin-left: 3em;">View Diff</a></p>
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