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This is an automatically generated e-mail. To reply, visit:
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53825#file53825line64" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/include/asterisk/res_hep.h</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="cm">/*! If non-zero, the payload accompanying this capture info will be compressed */</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="kt">int</span> <span class="n">zipped</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;">Two things:
When having a single-bit bitfield, you probably should make this unsigned.
Move this to the end of the structure.</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53825#file53825line75" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/include/asterisk/res_hep.h</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * This returned object with be an ao2 reference counted object.</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;">s/with be/will be/
or
s/with be/is/</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53825#file53825line76" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/include/asterisk/res_hep.h</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * Any parameter that is a pointer to an object should be</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"> * allocated on the heap, and will be free'd when the</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"> * \ref hepv3_capture_info object is reclaimed.</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 don't understand this line. Does this refer to the payload parameter to this function? If so, then reword this to be more explicit. If not, then...I have no idea what this means.</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53826#file53826line92" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_hep.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cp">#define DEFAULT_HEP_SERVER "192.168.1.1:9061"</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 is a very strange default for the HEP server. I suspect the port is common, but the IP address is making an odd assumption.</pre>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*! The IP protocol family */</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 CHUNK_TYPE_IP_PROTOCOL_FAMILY 0x0001</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;">Place all the CHUNK_TYPE_* defines in an enum.</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53826#file53826line174" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_hep.c</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/* HEPv3 Types */</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;">Document that all these hep structures store their content in network byte order.</pre>
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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">hep_chunk_str</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="k">struct</span> <span class="n">hep_chunk</span> <span class="n">chunk</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="kt">char</span> <span class="o">*</span><span class="n">data</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> <span class="n">__attribute__</span><span class="p">((</span><span class="n">packed</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 think there's an issue with this and the hep_chunk_payload structure. If this is expected to be sent over the wire, then you can't send a pointer. You need to have a buffer the size of the chunk's length field and copy the data into that buffer.
EDIT: After looking further at the code, it appears that this and hep_chunk_payload aren't actually being used. The payload is being sent by manually placing a hep_chunk and then the payload onto the socket buffer. To discourage the use of hep_chunk_str and hep_chunk_payload, you should probably just get rid of these structures.</pre>
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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="kt">int</span> <span class="nf">hep_queue_cb</span><span class="p">(</span><span class="kt">void</span> <span class="o">*</span><span class="n">data</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">RAII_VAR</span><span class="p">(</span><span class="k">struct</span> <span class="n">module_config</span> <span class="o">*</span><span class="p">,</span> <span class="n">config</span><span class="p">,</span> <span class="n">ao2_global_obj_ref</span><span class="p">(</span><span class="n">global_config</span><span class="p">),</span> <span class="n">ao2_cleanup</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">RAII_VAR</span><span class="p">(</span><span class="k">struct</span> <span class="n">hepv3_runtime_data</span> <span class="o">*</span><span class="p">,</span> <span class="n">hepv3_data</span><span class="p">,</span> <span class="n">ao2_global_obj_ref</span><span class="p">(</span><span class="n">global_data</span><span class="p">),</span> <span class="n">ao2_cleanup</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="k">struct</span> <span class="n">hepv3_capture_info</span> <span class="o">*</span><span class="n">capture_info</span> <span class="o">=</span> <span class="n">data</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 believe you're leaking capture_info here. Given the multitude of return paths, RAII_VAR is probably a good fit for it here.</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53826#file53826line537" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_hep.c</a>
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(Diff revision 2)
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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_log</span><span class="p">(</span><span class="n">AST_LOG_ERROR</span><span class="p">,</span> <span class="s">"UUID packet length: %d %ld</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">sock_buffer_len</span><span class="p">,</span> <span class="n">strlen</span><span class="p">(</span><span class="n">capture_info</span><span class="o">-></span><span class="n">uuid</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;">Looks like you left in some debugging.</pre>
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<a href="https://reviewboard.asterisk.org/r/3207/diff/2/?file=53828#file53828line62" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/res/res_hep_pjsip.c</a>
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(Diff revision 2)
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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="n">cid_hdr</span> <span class="o">=</span> <span class="n">PJSIP_MSG_CID_HDR</span><span class="p">(</span><span class="n">tdata</span><span class="o">-></span><span class="n">msg</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">uuid</span> <span class="o">=</span> <span class="n">ast_malloc</span><span class="p">(</span><span class="n">pj_strlen</span><span class="p">(</span><span class="o">&</span><span class="n">cid_hdr</span><span class="o">-></span><span class="n">id</span><span class="p">)</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="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">uuid</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">ao2_ref</span><span class="p">(</span><span class="n">capture_info</span><span class="p">,</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="tb"> </span><span class="tb"> </span><span class="k">return</span> <span class="n">PJ_SUCCESS</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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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="n">ast_copy_pj_str</span><span class="p">(</span><span class="n">uuid</span><span class="p">,</span> <span class="o">&</span><span class="n">cid_hdr</span><span class="o">-></span><span class="n">id</span><span class="p">,</span> <span class="n">pj_strlen</span><span class="p">(</span><span class="o">&</span><span class="n">cid_hdr</span><span class="o">-></span><span class="n">id</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;">Is this the intended use of the UUID in capture info? The same Call-ID will be repeated over many packets.
(Same comment applies for the logging_on_rx_msg function)</pre>
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<p>- Mark Michelson</p>
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<p>On February 11th, 2014, 12:21 p.m. UTC, Matt Jordan wrote:</p>
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<div>Review request for Asterisk Developers, Joshua Colp and Olle E Johansson.</div>
<div>By Matt Jordan.</div>
<p style="color: grey;"><i>Updated Feb. 11, 2014, 12:21 p.m.</i></p>
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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;">This patch adds the following:
(1) A new module, res_hep, which implements a generic packet capture agent for the Homer Encapsulation Protocol (HEP) version 3. Note that this code is heavily based on a patch provided by Alexandr Dubovikov; I basically just wrapped it up, added configuration via the configuration framework, and threw in a taskprocessor.
(2) A new module, res_hep_pjsip, which performs packet capturing for the PJSIP SIP stack. This is one of those modules that I think really showcases how nice the new stack is - we're able to add a new module that inserts itself into the stack and forwards the message traffic off to the res_hep module without modifying the core parts of the stack itself. This means a system administrator could load this at will on certain Asterisk systems and - if the capturing isn't needed - unload it and keep the stack 'slim'.
A few notes:
* This code exists in the following branch:
http://svn.asterisk.org/svn/asterisk/team/mjordan/12-hep
* The code in the branch also contains a module for RTCP. While that actually *does* send RTCP information over HEP, it does so as a JSON blob, which is not super useful. It's an open question as to what the formatting should be, i.e., a SNOM-esque encoding, RFC 6035, etc. I'm open to suggestions on this, which is why I deferred that functionality for a later review.
* Much thanks to Alexandr for his Asterisk patch for this code and for a *lot* of patience waiting for me to port it to 12/trunk. Due to some dithering on my part, this has taken the better part of a year to port forward (I still blame CDRs for the delay).</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;">An automated test that emulates a SIP capture server was written and is up for review here: https://reviewboard.asterisk.org/r/3206
This admittedly needs some *real* testing, as I have yet to stand up Kamailio with HEP. I think the code is far enough along to get some eyes on it however.</pre>
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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/res/res_hep_pjsip.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/branches/12/res/res_hep.exports.in <span style="color: grey">(PRE-CREATION)</span></li>
<li>/branches/12/res/res_hep.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/branches/12/include/asterisk/res_hep.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>/branches/12/configs/hep.conf.sample <span style="color: grey">(PRE-CREATION)</span></li>
<li>/branches/12/CHANGES <span style="color: grey">(407945)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/3207/diff/" style="margin-left: 3em;">View Diff</a></p>
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