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See below..

> Am Mittwoch, 3. Juli 2002 16:38 schrieben Sie:
> > > Am Mittwoch, 3. Juli 2002 15:48 schrieben Sie:
> > > > I'm testing the explicit assoc shutdown feature of the udp style
> > > > socket.
> > > >
> > > > With the function below I send a empty message with only the
> > > > sinfo_flag, set to MSG_EOF, and sinfo_assoc_id set to the target
> > > > assoc ID.
> > >
> > > Use "msg->msg_flags = MSG_EOF". The usage of sinfo->sinfo_flags is
> > > implemented in the next release of the socket API, to be released soon.
> >
> > How will the socket know which association to shut down, if it don't look
> > into the sendreceive structure ? Can I still explicitly shutdown
> > association ?
>
> The assoc ID has to be given in sinfo_assoc_id, but due to a small error,
> the sinfo_flags value is ignored. If you set the flag in msg->msg_flags,
> the shutdown should work with the old version of the socket API.
> In detail, the flag value given to the SCTPSocket or SCTPAssociation object
> in ext_sendmsg_singlebuffer() should be the OR-value
> flags|msg->msg_flags|sinfo->sinfo_flags, but in the old version it is only
> flags|msg->msg_flags.
>
> You can try to fix the problem in sctpsocketwrapper.cc,
> ext_sendmsg_singlebuffer() (or ext_sendmsg() in very old versions):
>
> if((msg != NULL) && (msg->msg_iov != NULL) &&
> (msg->msg_iov->iov_base != NULL)) {

Why does the msg->msg_iov need to be != NULL when there is no data to
transmit, in the case of an explicit assocition shutdown ?

> flags |= msg->msg_flags;
> *** INSERT THIS ***
> if(info != NULL) {
> flags |= info->sinfo_flags;
> }
> *******************
> if(tdSocket->Socket.SCTPSocketDesc.Flags & O_NONBLOCK) {
> flags |= MSG_DONTWAIT;
> }
>
> Please mail me if this solves the problem.

I will give it a try...

/Thanks from Torbjörn

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• [SCTP-Discussion] UDP style, Torbjorn Andersson, 07/03/2002
  • Re: [SCTP-Discussion] UDP style, Thomas Dreibholz, 07/03/2002
    • Re: [SCTP-Discussion] UDP style, Torbjorn Andersson, 07/03/2002
      • Re: [SCTP-Discussion] UDP style, Thomas Dreibholz, 07/03/2002
        • Re: [SCTP-Discussion] UDP style, Torbjorn Andersson, 07/04/2002
    • Re: [SCTP-Discussion] UDP style -- Continued, Torbjorn Andersson, 07/04/2002
      • Re: [SCTP-Discussion] UDP style -- Continued, Thomas Dreibholz, 07/04/2002

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