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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/4346/">https://reviewboard.asterisk.org/r/4346/</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;">Thanks for the quick feedback!</pre>
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<p style="margin-top: 0;">On January 16th, 2015, 8:19 a.m. UTC, <b>wdoekes</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4346/diff/1/?file=70621#file70621line13752" style="color: black; font-weight: bold; text-decoration: underline;">/branches/11/channels/chan_sip.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void extract_uri(struct sip_pvt *p, struct sip_request *req)</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>if (p->socket.type == SIP_TRANSPORT_UDP) {</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>/* All requests to SIPS URIs must have a SIPS Contact URI */</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>ast_string_field_build(p, our_contact, "<sip:%s%s%s>", user,</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>if (!strncmp(REQ_OFFSET_TO_STR(req, rlpart2), "sips:", 5)) {</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="tb"> </span>ast_strlen_zero(user) ? "" : "@", ast_sockaddr_stringify_remote(&p->ourip));</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>use_sips = 1;</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>}</pre></td>
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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;">I'd rather see this code moved/duplicated into uas_sips_contact and uac_sips_contact. Right now it looked like you missed half the criteria when looking at those functions.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I initially did that and then factored the common code out (because of DRY and all). But if it's more clear having the request URI checked in uas_sips_contact and uac_sips_contact, I can make the change.</pre>
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<p style="margin-top: 0;">On January 16th, 2015, 8:19 a.m. UTC, <b>wdoekes</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4346/diff/1/?file=70621#file70621line14378" style="color: black; font-weight: bold; text-decoration: underline;">/branches/11/channels/chan_sip.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int __sip_subscribe_mwi_do(struct sip_subscription_mwi *mwi)</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>ast_sip_ouraddrfor(&mwi->call->sa, &mwi->call->ourip, mwi->call);</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>ast_sip_ouraddrfor(&mwi->call->sa, &mwi->call->ourip, mwi->call);</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>build_contact(mwi->call);</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>build_via(mwi->call);</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>build_via(mwi->call);</pre></td>
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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;">Can this be safely removed?
Does the contact get added somewhere else?
Is there not a reason why it's done right after the ast_sip_ouraddrfor?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">From tracing this by hand, I could not see why this was here. build_contact() is called here in order to build the contact header on the mwi->call sip_pvt. Later, transmit_invite() is called with its init parameter set to 2, meaning that initreqprep will be called. At the end of initreqprep, the contact is rebuilt on the sip_pvt (mwi->call), overwriting what was previously created.
Between this call to build_contact() and the one in initreqprep(), I could find no references to the sip_pvt's contact field being used.
This adds up to this call to build_contact() being a no-op.
My suspicion is that this is the result of "organic" code growth in chan_sip. At one point, this may have been needed but it no longer is.</pre>
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<p>- Mark</p>
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<p>On January 15th, 2015, 8:07 p.m. UTC, Mark Michelson wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Mark Michelson.</div>
<p style="color: grey;"><i>Updated Jan. 15, 2015, 8:07 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-24646">ASTERISK-24646</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;">Please see the description on /r/4345 for a description of the interoperability problem.
This patch is the chan_sip version of the patch. The chan_sip patch is a bit more weird since creation of Contact headers is not divided into dialog vs. non-dialog situations. For this patch, I have expanded the build_contact() function to base the scheme of the Contact header based on the rules of RFC 3261 sections 8.1.1.8 and 12.1.1. To do this, I have added two parameters so that it is clear whether the Contact header is being created due to a response to an incoming request or if the Contact is being added to a created outgoing request.</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;">This patch has been tested by the reporter of ASTERISK-24646 and has been confirmed to solve the interop issue.</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/11/channels/chan_sip.c <span style="color: grey">(428405)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/4346/diff/" style="margin-left: 3em;">View Diff</a></p>
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