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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1005/">https://reviewboard.asterisk.org/r/1005/</a>
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<p>Ship it!</p>
<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 understand this is a scary looking patch, but after reviewing all the code paths involved this appears to be a safe solution. This logic is already set in place in other key request processing functions and while it is a poor substitute to a proper transaction layer, it works and is the solution we can implement now. Great work Terry.</pre>
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<p>- David</p>
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<p>On November 9th, 2010, 12:21 p.m., Terry Wilson wrote:</p>
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<div>Review request for Asterisk Developers and David Vossel.</div>
<div>By Terry Wilson.</div>
<p style="color: grey;"><i>Updated 2010-11-09 12:21:48</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;">From the issue:
0018075: Asterisk fails to recognize SUBSCRIBE retransmissions and tries to re-authenticate them, which breaks presence on polycom phones
Description Here's what happens from asterisk point of view:
-> SUBSCRIBE
<- 401 Unauthorized
-> SUBSCRIBE with auth
<- 200 OK (lost)
<- NOTIFY
-> 200 OK for NOTIFY
-> SUBSCRIBE with auth retransmission
<- 401 Unauthorized
At this point polycom phone received 2 "401 Unauthorized" in a row and it completely gives up on resubscribing to this hint until reboot. While polycom behavior is questionable, I believe asterisk should recognize retransmission and resubmit 200OK in this case</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;">I created a sipp scenario mimicking the issue, it now re-sends a 200 OK when an authed retransmission occurs. I also tested a scenario that sent a retransmission without authentication to ensure that we didn't accept un-authed retransmissions.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/view.php?id=18075">18075</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/1.4/channels/chan_sip.c <span style="color: grey">(294120)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1005/diff/" style="margin-left: 3em;">View Diff</a></p>
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