[SIPForum-discussion] Regarding 200 OK for CANCEL

[Tomasz Zieleniewski]

Hi,

No 200 response doesn't have to contain Route Header.
CANCEL is a "hop-by-hop" request because it is
responded to at each stateful proxy. It MUST include Route Header
so that stateless proxies are able to route it.
Stateful proxies don't need Route header because they have the state of the
transaction. Stateful proxy responds to a CANCEL, rather than simply forwarding
a response it would receive from a downstream element.

Regards
Tomasz Zieleniewski

On Wed, Oct 22, 2008 at 6:29 PM, saraswati sp <saraswatisp at gmail.com> wrote:
> Hi all,
>
> As per RFC 3261 "If the request being cancelled contains a Route header
> field, the CANCEL request MUST include that Route header field's values".
>
> Should 200 OK sent for the Cancel,  also contain such values. If so wat is
> the need of it??
>
> Aren't only mandatory fields enough???
>
> Thanks in Advance.
>
> Regards,
> Saras.
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