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