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Re: [SCTP-Discussion] Unordered delivery and blocking-mode in sctpsocket-API


Chronological Thread 
  • From: Andreas Jungmaier <ajung AT exp-math.uni-essen.de>
  • To: Torbjörn Andersson <torbjorn.andersson AT kau.se>, <discussion AT sctp.de>
  • Subject: Re: [SCTP-Discussion] Unordered delivery and blocking-mode in sctpsocket-API
  • Date: Mon Sep 22 12:27:25 2003
  • List-id: SCTP Discussions <discussion.sctp.de>
  • Organization: University Duisburg-Essen

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On Monday 22 September 2003 10:54, Torbjörn Andersson wrote:
> Hello.
>
> I'm using sctplib-1.0.0-rc1.tar.gz and socketapi-1.3.1.tar.gz and have
> problem with sending unordered messages.
>
> Does a "blocking socket" block when unordered messages are sent with
> sendmsg()?
>
> My tests indicate that it don't. Is this the normal behaviour or is it a
> fault in the socket-api?

Hello Torbjörn,

thanks for reporting this bug. I am pretty sure that the socket *should*
block, if either cwnd or rwnd do not allow sending the message at once !

Can you please say a little more about your tests ? In which conditions does
the socket NOT block (i.e. what about oustanding bytes, cwnd, rwnd) ?

Anyway, I will discuss this issue with Thomas, and we report back to
the list. Stay tuned !

Best regards,
Andreas

- --
Dipl.-Ing. Andreas Jungmaier
Computer Networking Technology Group
University of Duisburg-Essen
http://www.exp-math.uni-essen.de/~ajung
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