From 20cd34096b4091a5cedbe1e30f9983f7d33d5787 Mon Sep 17 00:00:00 2001
From: Mark Michelson <mmichelson@digium.com>
Date: Fri, 31 Jul 2009 17:57:29 +0000
Subject: [PATCH] Blocked revisions 209673-209674 via svnmerge

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  r209673 | mmichelson | 2009-07-31 12:55:44 -0500 (Fri, 31 Jul 2009) | 18 lines

  Improve chan_sip's ability to determine what methods should and should not be used in a dialog.

  The previous effort here was to store what a peer is capable of receiving by parsing REGISTER
  requests from the peer and keeping that information for as long as the registration was active.
  The problem with this is that there are a great number of SIP devices which give no indication
  of the methods allowed in their REGISTER requests, and it is unreasonable to try to guess what
  the device may or may not support. In addition, some SIP devices have been found to claim support
  for a specific method, but their handling the method is less than ideal, or they are actually
  lying.

  With this patch, we now determine what methods a device supports  by parsing the Allow header we
  receive from them, and we do this with each new dialog. In addition, a configuration option has
  been added so that an administrator can essentially blacklist certain methods from being used
  with certain peers if the admin knows that support for a specific method is dodgy or nonexistent.

  ABE-1822
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  r209674 | mmichelson | 2009-07-31 12:57:00 -0500 (Fri, 31 Jul 2009) | 3 lines

  Add configuration sample code for previous commit.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@209675 65c4cc65-6c06-0410-ace0-fbb531ad65f3