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Dear Hideki,

unfortunately the SCTPD version is a program that is
currently not actively being maintained, so we can
just make sure that it compiles with more recent
versions of sctplib.

The bug you mention is a limitation of the sctpd,
however, everyone is welcome to provide patches, as
the concept of using a provoleged sctpd with many
unprivileged user level programs is fairly nice.
However, as UDP is used as underlying transport
protocol (locally), it might happen that messages
are lost at times of exceptional system state, and
I cannot guarantee that all works well in that case.

If we cannot find a new maintainer for that part of
our current distribution, we may have to drop sctpd
from future releases.

Best regards,
Andreas

On Donnerstag, 16. Mai 2002 05:05, Hideki Kishida wrote:
> Hello
>
> It has core-dumped , with UA that used sctpdlib(ua.h).
> In this case, the length of the data that received it from the
> peer node was 4000 octets.
>
> +--------+ +--------+
>
> | UA | | peer |
> |sctpdlib| <- Daemon <- | node |
>
> +--------+ +--------+
> core-dump <----- 4000 octets
>
> The length of the data that received it, in UA that used
> sctpdlib(ua.h) might become short.
> This phenomenon seems to happen in the case that the data of the
> length of 1000 octets over is received from the peer node.
> In this case, the length of data becomes the same length as the
> data that received it before. (?)
>
> +--------+ +--------+
>
> | UA | | peer |
> |sctpdlib| <- Daemon <- | node |
>
> +--------+ +--------+
> 300 octets <----- 300 octets
> length mismatch <----- 1000 octets
> (300 octests)
>
> This problem did not happen, in the case of UA that used
> sctplib(sctp.h).
>
> +--------+ +--------+
>
> | UA | | peer |
> |sctplib | <----------- | node |
>
> +--------+ +--------+
> receive OK <----- 1000 octets
> receive OK <----- 4000 octets
>
> Does special setting become necessary, in the case that SCTP
> daemon is used ?
>
>
> TIA
>
> Hideki
> <kishida AT secnet.co.jp>,
> Japan
>
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion

- --
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Dipl.-Ing. Andreas Jungmaier | _
Computer Networking Technology Group | ASCII ribbon campaign ( )
University of Essen | - against HTML email X
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• [SCTP-Discussion] problem of sctpdlib ?, Hideki Kishida, 05/16/2002
  • Re: [SCTP-Discussion] problem of sctpdlib ?, Andreas Jungmaier, 05/16/2002

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