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Re: Fast SCP
Darshan Khedekar <>
31 Jul 2008 10:38AM ETHi,
IMO dissemination of templates to the receivers over a unrealiable channel such as multicast is not a very good idea. Because even if they detect that the new message they receive is not as per the template they are working with the receivers stay blocked.
A reliable stream with some form of acknowledgment should be used to ensure that all the parties actually receive the templates.
The parties are free to use the channel whether FTP or connection stream to get the most recent copy of the template.
The sender should ensure that the messages using changed templates structure are sent only when most of the receivers actually are aware of the change. (version number can be used to identify which template is being used for the sent message)
IMO if the sender starts disseminating the new message without anyone aware about it it breaks the motive of electronic communication.
Regards,
Darshan
> Hanno, this is an interesting problem.
>
> The short answer is no. There is no way for the receiver to detect that
> there is another field in the message. As you mention, you could put a
> placeholder into the template, maybe an optional field at the end of the
> template. This would maybe work in some instances, but you would be
> restricted in choice of operator etc.
>
> We did discuss this some when we were updating the spec from 1.0 to 1.1,
> but nothing came out of that discussion if I recall correctly.
>
> It's worth discussing again, though. Anyone has ideas on this?
>
> /Rolf
>
> > Rolf,
> >
> > I have a related question. Is there a way to send a new message
> > without having sent a new template definition, i.e. if I add a field
> > to my message, is there a way for the receiver to ignore that new
> > field until he receives a new template definition from me, perhaps by
> > appending it to the end of my message and having a placeholder in my
> > initial template definition? Or is it a strict requirement to always
> > send a new template definition prior to sending a message for it.
> >
> > Thanks, Hanno.
Fast SCP Dimitry London / Morgan Stanley 30 Jul 2008 10:16PM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 31 Jul 2008 3:28AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 31 Jul 2008 6:17AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 31 Jul 2008 9:05AM ET Re: Fast SCP Hanno Klein / Deutsche Börse Systems 31 Jul 2008 10:06AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 31 Jul 2008 10:15AM ET Re: Fast SCP
Darshan Khedekar 31 Jul 2008 10:38AM ET Re: Fast SCP Greg Orsini / Cameron Systems 31 Jul 2008 11:44AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 2:06AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 2:39AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 3:13AM ET Re: Fast SCP Hanno Klein / Deutsche Börse Systems 1 Aug 2008 3:33AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 3:57AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 4:10AM ET Re: Fast SCP Rolf Andersson / Pantor Engineering 1 Aug 2008 3:06AM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 1 Aug 2008 6:28AM ET Re: Fast SCP Jacob Northey / The LaSalle Technology Group 1 Aug 2008 8:21AM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 1 Aug 2008 9:33AM ET Re: Fast SCP Greg Orsini / Cameron Systems 1 Aug 2008 10:01AM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 1 Aug 2008 10:16AM ET Re: Fast SCP Greg Orsini / Orc Software w/CameronFIX 1 Aug 2008 10:32AM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 1 Aug 2008 10:58AM ET Re: Fast SCP Jean-Marie Sulmont / RTS 31 Jul 2008 10:19AM ET Re: Fast SCP Jean-Marie Sulmont / RTS 31 Jul 2008 10:41AM ET Re: Fast SCP David Rosenborg / Pantor Engineering AB 31 Jul 2008 11:10AM ET Re: Fast SCP Dimitry London / Morgan Stanley 7 Aug 2008 10:53PM ET
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