[SR-Users] append_hf to CANCEL
abalashov at evaristesys.com
Wed Nov 20 15:09:09 CET 2013
On 11/20/2013 09:05 AM, Grant Bagdasarian wrote:
> Does append_hf not work for CANCEL requests?
Correct: CANCEL is a "hop-by-hop" request where the proxy is a distinct
hop, i.e. UAC sends a CANCEL to the proxy, and the proxy sends a
separate CANCEL of its own on the branch that it initiated. This is in
contrast to something like a BYE, and most requests, which are
end-to-end request that the proxy simply relays upstream as received.
Alex Balashov - Principal
Evariste Systems LLC
235 E Ponce de Leon Ave
Decatur, GA 30030
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
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