[asterisk-bugs] [Asterisk 0014725]: Asterisk doesn't add Route headers in NOTIFY when the SUBSCRIBE came from a proxy

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=14725 
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Reported By:                ibc
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14725
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.23 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-03-23 12:05 CDT
Last Modified:              2009-03-24 21:18 CDT
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Summary:                    Asterisk doesn't add Route headers in NOTIFY when
the SUBSCRIBE came from a proxy
Description: 
Client ---- Proxy ---- Asterisk

The Client sends a SUBSCRIBE (Event: dialog) and the Proxy routes it to
Asterisk adding "Record-Route" header.

The correct behaviour would be:
1) Client sends SUBSCRIBE to Proxy
2) Proxy routes SUBSCRIBE to Asterisk adding Record-Route
3) Asterisk replies 200 and mirrors Record-Route in the reply (correct)
4) Proxy routes teh 200 to the Client
5) Asterisk sends an in-dialog NOTIFY containing a Route header (with the
value of the received Record-Route).
6) The proxy routes the NOTIFY to the client.

But Asterisk fails in step 5 since the NOTIFY generated by Asterisk
doesn't contain a Route header.

Of course, that NOTIFY MUST contain a Route header since it's in fact an
in-dialog request, and the dialog was created using loose_route (the
request forming the dialog, the SUBSCRIBE, had Record-Route inserted by the
proxy).
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 (0102153) dnatural (reporter) - 2009-03-24 21:18
 http://bugs.digium.com/view.php?id=14725#c102153 
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Hi!
This bug has bugged me for a long time, and seeing this report finally
made me do something about it.  
I can't upload a patch because I do not have a license on file (nor will I
ever sign one) but I'm happy to email you what I came up with today.  It's
only two lines.  

chan_sip.c line 15563 

Issue History 
Date Modified    Username       Field                    Change               
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2009-03-24 21:18 dnatural       Note Added: 0102153                          
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