Re: [Lksctp-developers] Unreliable Unordered SCTP possible?

[Michael T. <Mic...@lu...>]

On Nov 28, 2008, at 6:27 AM, Horacio Sanson wrote:

>
> SCTP is a reliable protocol so retransmissions are always present. I  
> would
> like to make SCTP behave a little more like UDP by disabling  
> retransmission
> altogether but there seems to be no way to set the number of  
> retransmissions
> allowed per message.
>
> I think I saw somewhere an example of PR-SCTP profile that allowed  
> to set the
> number of retransmissions in the sinfo_pr_value field of  
> sctp_sndrcvinfo but I
> am unable to find it anywhere. Or maybe was just a proposal for a  
> new PR-SCTP
> profile that is  not implemented yet??
The FreeBSD/Mac OS X implementation supports three policies:
#define SCTP_PR_SCTP_TTL  0x0001/* Time based PR-SCTP */
#define SCTP_PR_SCTP_BUF  0x0002/* Buffer based PR-SCTP */
#define SCTP_PR_SCTP_RTX  0x0003/* Number of retransmissions based PR- 
SCTP */

SCTP_PR_SCTP_RTX is the one you are looking for. But I do not think it
is implemented in LKSCTP yet...

Best regards
Michael

>
>
>
> regards,
> Horacio
>
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