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chan_sip: keep same local (from) tag for outgoing register requests

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For outbound register requests the tag on the From line was
updated every 20 seconds prior to a successful registration
and also once for each registration renewal.  That behavior
can possibly cause the registration to be denied because of
the different tag, and is not aligned with the intention of
RFC 3261 8.1.3.5 "... request constitutes a new transaction
and SHOULD have the same value of the Call-ID, To, and From
of the previous request...".  This updates chan_sip to have
a field to keep the local tag in the registration structure
and use that tag for registration requests where the callid
is also unchanged.

(closes issue ASTERISK-12117)
Reported by: Pawel Pierscionek
Review: https://reviewboard.asterisk.org/r/2988/
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Merged revisions 402604 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 402605 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 402606 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@402607 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Scott Griepentrog
2013-11-08 23:07:50 +00:00
parent 7323809607
commit 094db82a73
2 changed files with 12 additions and 1 deletions
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1
channels/sip/include/sip.h
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@@ -1390,6 +1390,7 @@ struct sip_registry {
AST_STRING_FIELD(md5secret); /*!< Password in md5 */
AST_STRING_FIELD(callback); /*!< Contact extension */
AST_STRING_FIELD(peername); /*!< Peer registering to */
AST_STRING_FIELD(localtag); /*!< Local tag generated same time as callid */
);
enum ast_transport transport; /*!< Transport for this registration UDP, TCP or TLS */
int portno; /*!< Optional port override */