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Re: [Sip] draft-ietf-sip-sctp-03.txt: comment on unordered delivery
Hi,
By reading the paragraph you refer to, it is pretty clear that the
unordered flag should not be set in the case you are talking about.
Thanks,
Gonzalo
hbhondwe@hss.hns.com wrote:
>
> Hi,
>
> In section 4.1 Mapping of SIP Transactions into Streams,
> it says
> "..a SIP entity SHOULD send every SIP message
> (request or response) over stream zero with the unordered flag set..."
>
> Are there no SIP extensions which may require ordered delivery from
> SCTP(sip-isup mapping for instance)?
> or is the 'SHOULD' supposed to accommodate such exceptions?
>
> Later in the same section, it is said "..Some applications introduce an
> extra layer between the transport
> layer and SIP (e.g., compression and/or encryption). This extra layer
> sometimes requires ordered delivery of messages from the transport
> layer (e.g., TLS [6])."
>
> The section then recommends using same stream for maintaining
> sequence...but no mention is made about whether the unordered flag should
> be set or not. To maintain sequence, in addition to choosing the same
> stream, will it not be required that messages be also sent in sequence
> within a stream(by not setting the unordered flag)?
>
> regards
> Harsh Bhondwe
> Hughes Software Systems
>
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--
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_______________________________________________
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This list is for NEW development of the core SIP Protocol
Use sip-implementors@cs.columbia.edu for questions on current sip
Use sipping@ietf.org for new developments on the application of sip