On 06/21/2010 04:07 AM, Iñaki Baz Castillo wrote:
Also note that CANCEL is hop-by-hop (in stateful mode), this is: a CANCEL is not relayed/forwarded by a proxy, but consumed/accepted by the proxy (so it immediately replies 200) and then the proxy must terminate *its* pending outgoing transactions (which would involve *generating* CANCEL requests for those transactions which already replied a 1xx).
Sure, but from a conceptual point of view this sounds like more like a UAS and less like a proxy, because the proxy is in this case is (a) the logical target of the CANCEL request from the UAC and (b) provides an encapsulating layer of abstraction in which the management of one or more branches is contained.
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