[sipcore] 4244bis: How does History-Info account for Route?

"Worley, Dale R (Dale)" <dworley@avaya.com> Tue, 05 July 2011 19:13 UTC

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From: "Worley, Dale R (Dale)" <dworley@avaya.com>
To: "sipcore@ietf.org" <sipcore@ietf.org>
Date: Tue, 05 Jul 2011 15:10:49 -0400
Thread-Topic: 4244bis: How does History-Info account for Route?
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Subject: [sipcore] 4244bis: How does History-Info account for Route?
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How does the History-Info reflect the actions due to Route headers?  As written, while the request is being routed due to the Route URIs, the request-URI does not change, and so many History-Info entries show the request-URI (and give no information about where the request was being sent).

Oddly, I ran into this while I was considering a practical use for H-I:  It allows the upstream proxies to determine if a fork reached a particular downstream proxy, and so helps with the "redundant paths" routing issue.

Dale