[asterisk-commits] oej: branch oej/pgtips-srv-and-outbound-stuff-1.8 r385988 - /team/oej/pgtips-...

[SVN commits to the Asterisk project]

Author: oej
Date: Thu Apr 18 02:56:23 2013
New Revision: 385988

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=385988
Log:
Adding README. Are we done now?

Added:
    team/oej/pgtips-srv-and-outbound-stuff-1.8/README.pgtips-srv-records   (with props)
Modified:
    team/oej/pgtips-srv-and-outbound-stuff-1.8/   (props changed)

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Added: team/oej/pgtips-srv-and-outbound-stuff-1.8/README.pgtips-srv-records
URL: http://svnview.digium.com/svn/asterisk/team/oej/pgtips-srv-and-outbound-stuff-1.8/README.pgtips-srv-records?view=auto&rev=385988
==============================================================================
--- team/oej/pgtips-srv-and-outbound-stuff-1.8/README.pgtips-srv-records (added)
+++ team/oej/pgtips-srv-and-outbound-stuff-1.8/README.pgtips-srv-records Thu Apr 18 02:56:23 2013
@@ -1,0 +1,41 @@
+Edvina AB
+Olle E. Johansson
+
+Project start: 2013-04-18
+
+
+
+
+
+
+
+
+SRV Support in the SIP channel of Asterisk
+==========================================
+
+
+The Asterisk SIP channel lacks full support of RFC 3263, Locating SIP services. This project
+aims at fixing that.
+
+For every transaction, a SIP client needs to build a list of SIP servers as discovered
+by DNS lookup. The list needs to be prioritized and handled according to a set of
+rules set by RFC 3263 and the RFCs referred to by that document.
+
+- DNS Load balancing
+  For servers in the same priority, select one based on the weight distribution indicated
+  in the records
+- DNS priority and failover
+  Start with lowest priority and work upwards in the set of records.
+
+In addition, address family needs to be handled properly. An IPv4 server needs to ignore
+hosts with only IPv6 records and move on in the process of selecting a server and 
+vice versa for IPv6 only hosts. 
+
+Happy Earballs
+==============
+Dual stack hosts needs to contact both address families at the same time to minimize timeout effects on caller's
+call setup time.
+This is not in scope for this project. Work is in progress in the SIP Forum IPv6 wg
+to define a process for this situation.
+
+This work is funded by Inteno, Sweden.

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